Seats - Repair BMW Z4 E89

52 14... Performing function check with adapter cable (for seat repairs)

Note. The function check on a repaired driver's or front passenger seat can be performed outside the vehicle by using adapter cable 61 4 360.

Scheme 3

Use

Adapter cable 61 4 360 is connected to vehicle wiring harness (1) and removed seat (2).

Scheme 4

52 13 021 Removing and installing/replacing flexmat on left or right front seat

Necessary preliminary tasks

1. Remove padding for front seat . See «5213400 Replacing seat cover on left or right front seat (normal/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-400-replacing-seat-cover) or «52 15 400 Replacing seat cover for left or right front seat (sport/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair)

Remove plug housing (1) from flexmat.

Cut all cable ties and disengage wiring harnesses from flexmat.

Installation

Make sure wiring harnesses are laid correctly.

Observe bending radius and do not lay wiring harnesses tensioned.

Scheme 5

Disengage flexmat (1) at front.

Scheme 6

Swing flexmat (1) down and disengage from seat frame.

Scheme 7

52 13... Removing and installing Isofix holder

Necessary preliminary tasks

1. Remove seat fabric See «5213400 Replacing seat cover on left or right front seat (normal/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-400-replacing-seat-cover) or «5215400 Replacing seat cover for left or right front seat (sport/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-400-replacing-seat-cover)

Release screws (1).

Tightening torque 52 10 07AZ .

Remove Isofix holder.

Scheme 8

52 13 000 Removing and installing left or right front seat (normal/manual)

Necessary preliminary tasks

1. Open convertible top
2. Disconnect «BATTERY NEGATIVE LEAD»(/bmw/z4/e89-2009-2013/remont/horns/#general-electrical-system-repair__61-20-900-disconnecting-and-connecting)

Installation

1. Powerlok screws must be replaced and must not be reused
2. Powerlok screws are mechanical screw locks with trilobular threads
3. Screws are fitted with a Torx Plus system and can be released with a standard Torx screwdriver

Move seat to upper back position.

Release and dispose of screws (1).

Scheme 9

Move seat forwards and position flush with seat runners.

Unclip release tab (2) for belt anchor fitting trim (1) with plastic wedge.

Scheme 10

Release screw (1).

Tightening torque 72 11 2AZ .

Remove anchor fitting (2).

Installation

Make sure anchor fitting (2) is correctly seated on seat mechanism pin.

Scheme 11

Release and dispose of screws (1).

Scheme 12

Disconnect plug connection (1).

Lift out front seat.

Scheme 13

Installation

1. Carpet must not get between seat rails and floor pan in area of fastening points (grating noises)
2. Replace microencapsulated screws
3. Insert all screws loose to avoid twisting
4. Tighten down all screws to specified torque Tightening torque «52 10 1AZ»(/bmw/z4/e89-2009-2013/remont/seats/#seats-tightening-torques) .

52 13 390 Removing and installing or replacing front left or right head restraint

Reach on left and right under head restraint and unclip in jerks in upward direction.

Scheme 14

52 13 198 Removing and installing or replacing rear panel on left or right front seat backrest

Release clips (1) with diagonal cutting pliers.

Remove rear panel (2) downwards with a turning action.

Note. Remove remnants of clips.

Scheme 15

Installation

Retaining hooks (1) and bore holes (2) on rear panel (3) must not be damaged.

Replace faulty clips.

Scheme 16

52 13 030 Removing and installing/replacing backrest frame on left or right front seat

Necessary preliminary tasks

1. Remove «FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-000-removing-and-installing)
2. Remove «REAR PANEL»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-198-removing-and-installing) on front seat backrest

Release airbag wiring harness (2) from cable holders on flexmat.

Disconnect cable tie from clips.

Raise release clip (3) and pull plug (4) out of plug housing (1).

Scheme 17

Installation

Always feed in cable tie (1) at narrow end of plug housing in direction of arrow.

Cables must be secured with insulation under cable tie.

Firmly tighten cable tie (1) to relieve strain. It must not be possible to move the cable.

Make sure plug (2) is correctly locked in plug housing (3).

Scheme 18

Unfasten plug connection (1) and disconnect.

Unclip cable.

Release wiring harness (3) from cable holders on seat mechanism.

Unfasten plug connection (2) and disconnect.

Scheme 19

Unhook backrest cover (1) on left and right.

Release screws (2) on left and right.

Tightening torque 52 10 02AZ .

Remove backrest frame (3) completely towards top.

Scheme 20

Replacement

1. Remove backrest cover with padding.
2. Remove «SIDE AIRBAG»(/bmw/z4/e89-2009-2013/remont/airbag/#restraints-repair__72-12-050-remove-and-install) .
3. Remove lumbar support See «5215059 Removing and installing/replacing lumbar support pump with valve housing for lumbar support/backrest width adjustment»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-059-removing-and-installingreplacing) ; «5213059 Removing and installing/replacing lumbar support pump with valve housing for lumbar support»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-059-removing-and-installingreplacing) ; «5213055 Removing and installing/replacing lumbar support on front seat»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-055-removing-and-installingreplacing) or «5215061 Replacing both air cushions for backrest width adjustment on left or right front seat»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-061-replacing-both-air) .

52 13 025 Removing and installing/replacing left or right seat mechanism (normal/manual)

This job is described under

1. Remove «BACKREST FRAME»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-030-removing-and-installingreplacing) on front seat

Replacement only

1. Remove seat cover . See «5213400 Replacing seat cover on left or right front seat (normal/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-400-replacing-seat-cover) or «5215400 Replacing seat cover for left or right front seat (sport/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-400-replacing-seat-cover) for front seat
2. Remove «SEAT BELT TENSIONER»(/bmw/z4/e89-2009-2013/remont/airbag/#restraints-repair__72-11-041-removing-and-installing)
3. Remove control unit for seat heating . See «6135080 Removing and installing/replacing control unit/module for left or right seat adjustment»(/bmw/z4/e89-2009-2013/remont/horns/#general-electrical-system-repair__61-35-080-removing-and-installingreplacing) or «6135095 Removing and installing/replacing control unit/module for seat heating»(/bmw/z4/e89-2009-2013/remont/horns/#general-electrical-system-repair__61-35-095-removing-and-installingreplacing)

Seat mechanism is supplied complete with corresponding drive units.

Unlock plug housing (3) and remove from holder.

Disengage wiring harnesses from flexmat.

Installation

Make sure wiring harnesses are laid correctly.

Observe bending radius and do not lay wiring harnesses tensioned.

Release screws (1).

Tightening torque 52 10 05AZ .

Remove holder (2) for control unit.

Scheme 21

Release screw (1).

Tightening torque 52 10 03AZ .

Remove belt buckle deflector trim (2).

Scheme 22

Sport seat only

Release screws (1).

Remove connection for thigh support.

Scheme 23

52 13 055 Removing and installing/replacing lumbar support on front seat

Necessary preliminary tasks

1. Remove «REAR PANEL ON FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-198-removing-and-installing)

Detach backrest cover (1) from backrest frame.

Scheme 24

Note. Do not pop valve housing (1) out of backrest frame for this operation.

Carefully pull valve housing (1) forwards out of backrest frame.

Unlock quick connectors and detach air hoses from valve housing (1).

Note. Connections are coded against incorrect assembly.

Scheme 25

Detach lumbar cushion (1) from spring wire.

Installation

Attach lumbar cushion (1) to second and fourth wires from below.

Press backrest support forwards a little.

Pull out lumbar cushion (1) downwards.

Feed air hoses out of backrest frame and spring wire.

Scheme 26

Installation

Check lumbar cushion at top (1) and bottom (2) for damage.

Air hoses (3) must not be kinked.

Scheme 27

Installation

Carry out function check .

52 13 059 Removing and installing/replacing lumbar support pump with valve housing for lumbar support

Necessary preliminary tasks

1. Remove «REAR PANEL ON FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-198-removing-and-installing)

Detach backrest cover (1) from backrest frame.

Scheme 28

Release cable tie (1).

Installation

Replace defective cable tie.

Open zip fastener (2).

Scheme 29

Detach cable tie.

Installation

Replace defective cable ties.

Remove lumbar support pump (1) from backrest frame.

Unfasten plug connection (2) and disconnect.

Unclip air hose from holder (3).

Scheme 30

Note. Picture shows removal without backrest cover for purposes of clarity.

Pop valve housing (2) for lumbar support in direction of arrow out of backrest frame.

Disengage wiring harness from cable tie (3).

Installation

Feed rubber plug (1) through backrest frame.

Pull rubber plug (1) and pop valve housing into backrest frame.

Check rubber sleeve of valve housing for correct seating in backrest frame.

Scheme 31

Unfasten plug connection (1) and disconnect.

Unlock quick connector and detach air hoses (2) and (3 and 4) from valve housing.

Valve unit for lumbar support

1. (2) Hose (clear), lumbar drive
2. (3) Hose (blue), top lumbar cushion
3. (4) Hose (red), bottom lumbar cushion

Note. Connections are coded against incorrect assembly.

Scheme 32

Note. Carry out function check .

52 13 040 Removing and installing/replacing outer cover on left or right front seat backrest (normal/manual)

Necessary preliminary tasks

1. Remove «FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-000-removing-and-installing)

Note. Picture shows installed seat by way of example.

Raise lock (3) and lever out handle

1. for backrest angle adjustment and
2. for seat height adjustment with special tool 00 9 317.

Scheme 33

Release screw (1).

Tightening torque 52 10 10AZ .

Note. Trim (2) is engaged in marked area.

Press lock (3) and pull trim (2) off seat mechanism.

If necessary, lever out carefully with special tool 00 9 317 .

Scheme 34

If necessary, unlock plug connection (1) for backrest width adjustment and disconnect.

If necessary, unlock plug connection (2) for lumbar support and disconnect.

Scheme 35

Replacement

If necessary, remove backrest width adjustment switch and lumbar support switch.

Installation

Make sure backrest width adjustment and lumbar support switches are correctly engaged.

52 13 405 Replacing backrest cover for left or right front seat

Necessary preliminary tasks

1. Clamp off «BATTERY NEGATIVE LEAD»(/bmw/z4/e89-2009-2013/remont/horns/#general-electrical-system-repair__61-20-900-disconnecting-and-connecting)
2. Remove «REAR PANEL»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-198-removing-and-installing)
3. Remove «HEAD RESTRAINT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-390-removing-and-installing)

Version with seat heating only

Unfasten plug connection (1) and disconnect.

Detach cable tie.

Release wiring harness (2) from cable holders on seat mechanism.

Installation

Lay wiring harness without kinks and tension.

Scheme 36

Unclip cable tie (1) from seat mechanism.

Scheme 37

Release cable tie (1).

Installation

Replace defective cable tie.

Open zip fastener (2).

Detach backrest cover (1) from backrest frame.

Scheme 38

Unscrew nuts (1).

Installation

Replace nuts.

Tightening torque 72 12 03AZ .

Scheme 39

Detach mounting strip (4) from flexmat.

Carefully pull airbag module (3) with threaded pins out of backrest frame and feed out between padding (1) and inner bag (2).

Set down airbag module (3) to one side.

Scheme 40

Installation

Pull inner bag (1) fully over airbag module and threaded pins.

Feed in mounting strip (2) of inner bag (1) through backrest frame.

Insert threaded pins into backrest frame and secure with new nuts.

No inner bag material is permitted to project through the hole in the inner frame.

Install nuts and tighten down.

Tightening torques 72 12 03AZ .

Scheme 41

Installation

Inner bag must be between airbag module and backrest frame!

Engage mounting strip (1) of inner bag in flexmat.

Position inner bag (2) smoothly over backrest frame.

Engage backrest cover (3) in backrest frame.

Scheme 42

Reposition backrest cover (1) at side and bottom and pull off with padding towards top from backrest frame.

Scheme 43

Release all retainers in marked area.

Remove backrest cover from padding.

Note. Remove all remnants of retainers from backrest cover and padding.

Scheme 44

Installation

Bend new retainer (2) with special tool 52 0 050 .

1. Padding
2. Retainer
3. Trim wire in padding
4. Trim wire in backrest cover
5. Backrest cover

Scheme 45

Replacement of backrest cover

Pull trim wires out of backrest cover.

Cut new backrest cover to size and insert trim wires.

Scheme 46

52 13 455 Replacing heating elements for left or right front seat (basic)

Necessary preliminary tasks

1. Remove seat and backrest covers See «5213400 Replacing seat cover on left or right front seat (normal/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-400-replacing-seat-cover) or «5213405 Replacing backrest cover for left or right front seat»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-405-replacing-backrest-cover)

Note. Heating element is bonded to the foam section and cannot be separated from each other without incurring damaging. Foam section and heating mat must be replaced.

Check new foam section

1. No obvious damage or material defects
2. All trim wires present in foam
3. No bubbles in foam section
4. No dirt/contamination on foam or residual foam
5. Pay attention to foam section on left and right

Check new heating mat

1. No obvious damage or material defects
2. All tear-off film pieces presents
3. Note variant by examining label on cable

Guide cable for backrest heating through foam hole.

Stick on main section (1)

1. Pull adhesive film pieces off main section (1) and stick to upper edge of main section foam until flush

Stick on bead section (2)

1. Pull adhesive film pieces off bead section (2) and stick on heating mat along bead section edges.
2. Press down evenly in outwards direction

Scheme 47

Guide cable for seat heating through foam hole.

Stick on main section (1)

1. Pull adhesive film pieces off main section (1) and stick to upper edge of main section foam until flush

Stick on bead section (2)

1. Pull adhesive film pieces off bead section (2) and stick on heating mat along bead section edges.
2. Press down evenly in outwards direction

Scheme 48

Check laying of heating mats

1. Heating mats laid without folds
2. Heating mats correctly positioned
3. All bonding surfaces stuck on

Note. Carry out function check .

52 13 415 Replacing left or right support for front seat (normal/manual)

Operation is described in

1. Replacing «SEAT COVER ON LEFT OR RIGHT FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-400-replacing-seat-cover) .

Scheme 49

Enabling seat occupancy detector (CIS mat)

1. Connect BMW programming system
2. Code airbag control unit
3. Clear fault memory if necessary

52 13 420 Replacing left or right support for front seat backrest (normal/manual)

Operation is described in

Replacing BACKREST COVER FOR LEFT OR RIGHT FRONT SEAT .

52 13 400 Replacing seat cover on left or right front seat (normal/manual)

Necessary preliminary tasks

1. Remove «FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-000-removing-and-installing)
2. Remove outer cover . See «5213040 Removing and installing/replacing outer cover on left or right front seat backrest (normal/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-040-removing-and-installingreplacing) or «5215400 Replacing seat cover for left or right front seat (sport/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-400-replacing-seat-cover) on front seat

Version with seat occupancy detector (CIS mat) only

1. Data line CIS
2. Earth cable, seat pan
3. Earth cable, backrest frame

Unlock all plug connections and disconnect.

Note. From build date 09/2009 onward, earth cable (3) not included on backrest frame.

Scheme 50

Version with seat heating only

Unlock plug connection (1) for seat heating and disconnect.

Unfasten cable strap.

Disengage wiring harness from cable clips (flexmat).

Scheme 51

Version with seat occupancy detector without seat heating (CIS mat) only

Seat heating is integrated in the CIS mat and is stuck to the padding over the full surface.

Lay cable for seat heating as shown to flexmat and secure with cable strap.

Secure plug with cable strap to cable.

Scheme 52

Vehicle exterior

Lever clip (1) out of seat cover.

Installation

If necessary, replace faulty clip.

Scheme 53

Tunnel side

Disengage cover fastener (1) from belt deflector trim.

Scheme 54

Detach seat cover (1) from seat frame.

Scheme 55

Pull out cover welt (1) completely from seat frame (2).

Scheme 56

Remove seat cover (1) with padding towards front/top.

Installation

Slide foam completely through backrest gap and seat structure. Make sure foam and bracing cloth are correctly fitted.

Scheme 57

Version with seat heater and/or with seat occupancy detector (CIS mat)

Pull seat cover (1) with padding forward a little and feed wiring harnesses (2) out.

Remove seat cover (1) with padding towards front/top.

Carefully detach all retainers in side area from OKE strips (1).

Carefully turn seat cover over and release retainers from OKE strips (2).

Remove seat cover from padding.

Scheme 58

Installation

Bend new retainers (2) with special tool 52 0 050 .

1. Padding
2. Retainer
3. Trim wire in padding
4. OKE strip in cover
5. Seat cover

Scheme 59

65 77 604 Replacing sensor mat (CIS mat) for front passenger seat occupancy detection detector

Procedure for replacing the CIS mat together with the upholstery is described under

1. Remove padding for front seat . See «5213400 Replacing seat cover on left or right front seat (normal/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-400-replacing-seat-cover) or «5215400 Replacing seat cover for left or right front seat (sport/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-400-replacing-seat-cover)

The work scope with CIS mat is different in the following work steps

Release the bolting point (1) of the ground cable on the seat pan.

Scheme 60

Cut open cable strap (1).

Lift the locking tab and pull the connector out of the side of the connector housing.

Installation note

Replace cable tie (1).

Connector is encoded against incorrect assembly.

Scheme 61

Installation note

Enabling seat occupancy detection (CIS mat)

1. Connect BMW programming system
2. Encode airbag control unit
3. Delete fault memory if necessary

52 14... Additional work in event of faulty drive/gearing for longitudinal adjustment

Release screws (1) of rockers for seat height adjustment.

Installation

Carefully bend side section back and feed rocker out of top rail.

Tilt front seat back.

Scheme 62

Unfasten plug connection (1) and disconnect.

Unclip central connector (2) from seat mechanism.

Unclip control units (1) See 6135080 Removing and installing/replacing control unit/module for left or right seat adjustment or 6135095 Removing and installing/replacing control unit/module for seat heating .

Scheme 63

Unfasten plug connection (1) and disconnect.

Scheme 64

Bend metal tab (1) open.

Scheme 65

Lift drive (1) and flex shaft (2) out of guide (4) in direction of arrow.

Detach drive (1) from rubber mounts (3).

Detach flex shaft (3) from drive (1).

Scheme 66

Release screws (1) at front.

Installation

Install new drive for longitudinal seat adjustment.

Move front seat forwards.

Release screws (1) at rear.

Lift out front seat and assemble.

Installation

1. Make sure flex shaft is correctly fitted on drive
2. Carpet must not get between seat rails and floor pan in area of fastening points (grating noises)
3. Powerlok screws must be replaced and must not be reused
4. Powerlok screws are mechanical screw locks with trilobular threads
5. Insert all screws loose to avoid twisting
6. Tighten down all screws to specified torque Tightening torque «52 10 1AZ»(/bmw/z4/e89-2009-2013/remont/seats/#seats-tightening-torques) .

Note. The function check on a repaired driver's or front passenger seat can be performed outside the vehicle by using adapter cable 61 4 360.

Scheme 67

Use

Adapter cable 61 4 360 is connected to vehicle wiring harness (1) and removed seat (2).

Necessary preliminary tasks

1. Remove padding for front seat See «5213400 Replacing seat cover on left or right front seat (normal/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-400-replacing-seat-cover) or «5215400 Replacing seat cover for left or right front seat (sport/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-400-replacing-seat-cover)

Remove plug housing (1) from flexmat.

Cut all cable ties and disengage wiring harnesses from flexmat.

Installation

Make sure wiring harnesses are laid correctly.

Observe bending radius and do not lay wiring harnesses tensioned.

Disengage flexmat (1) at front.

Swing flexmat (1) down and disengage from seat frame.

Necessary preliminary tasks

1. Remove seat fabric See «5213400 Replacing seat cover on left or right front seat (normal/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-400-replacing-seat-cover) or «5215400 Replacing seat cover for left or right front seat (sport/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-400-replacing-seat-cover)

Release screws (1).

Tightening torque 52 10 07AZ .

Remove Isofix holder.

52 14... Removing and installing carrier for outer cover on left or right front seat (electric)

Necessary preliminary tasks

1. Remove «OUTER COVER»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-14-040-removing-and-installingreplacing)

Cut open cable tie (1).

Unlock and disconnect plug connections (2) on servodrive.

Release screw (3).

Tightening torque 52 10 06AZ .

Unclip carrier in marked area and remove.

Installation

Replace cable ties.

Make sure carrier is correctly seated on seat mechanism.

Scheme 68

Necessary preliminary tasks

1. Open convertible top
2. Disconnect «BATTERY NEGATIVE LEAD»(/bmw/z4/e89-2009-2013/remont/horns/#general-electrical-system-repair__61-20-900-disconnecting-and-connecting)

Installation

1. Powerlok screws must be replaced and must not be reused
2. Powerlok screws are mechanical screw locks with trilobular threads
3. Screws are fitted with a Torx Plus system and can be released with a standard Torx screwdriver

Move seat to upper back position.

Release and dispose of screws (1).

Move seat forwards and position flush with seat runners.

Unclip release tab (2) for belt anchor fitting trim (1) with plastic wedge.

Release screw (1).

Tightening torque 72 11 2AZ .

Remove anchor fitting (2).

Installation

Make sure anchor fitting (2) is correctly seated on seat mechanism pin.

Release and dispose of screws (1).

Disconnect plug connection (1).

Lift out front seat.

Installation

1. Carpet must not get between seat rails and floor pan in area of fastening points (grating noises)
2. Replace microencapsulated screws
3. Insert all screws loose to avoid twisting
4. Tighten down all screws to specified torque

Tightening torque 52 10 1AZ .

Reach on left and right under head restraint and unclip in jerks in upward direction.

Release clips (1) with diagonal cutting pliers.

Remove rear panel (2) downwards with a turning action.

Note. Remove remnants of clips.

Installation

Retaining hooks (1) and bore holes (2) on rear panel (3) must not be damaged.

Replace faulty clips.

Necessary preliminary tasks

1. Remove «FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-000-removing-and-installing)
2. Remove «REAR PANEL»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-198-removing-and-installing) on front seat backrest

Release airbag wiring harness (2) from cable holders on flexmat.

Disconnect cable tie from clips.

Raise release clip (3) and pull plug (4) out of plug housing (1).

Installation

Always feed in cable tie (1) at narrow end of plug housing in direction of arrow.

Cables must be secured with insulation under cable tie.

Firmly tighten cable tie (1) to relieve strain. It must not be possible to move the cable.

Make sure plug (2) is correctly locked in plug housing (3).

Unfasten plug connection (1) and disconnect.

Unclip cable.

Release wiring harness (3) from cable holders on seat mechanism.

Unfasten plug connection (2) and disconnect.

Unhook backrest cover (1) on left and right.

Release screws (2) on left and right.

Tightening torque 52 10 02AZ .

Remove backrest frame (3) completely towards top.

Replacement

1. Remove backrest cover with padding.
2. Remove «SIDE AIRBAG»(/bmw/z4/e89-2009-2013/remont/airbag/#restraints-repair__72-12-050-remove-and-install) .
3. Remove lumbar support See «5215059 Removing and installing/replacing lumbar support pump with valve housing for lumbar support/backrest width adjustment»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-059-removing-and-installingreplacing) ; «5213059 Removing and installing/replacing lumbar support pump with valve housing for lumbar support»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-059-removing-and-installingreplacing) ; «5213055 Removing and installing/replacing lumbar support on front seat»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-055-removing-and-installingreplacing) or «5215061 Replacing both air cushions for backrest width adjustment on left or right front seat»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-061-replacing-both-air) .

This job is described under

1. Remove «BACKREST FRAME»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-030-removing-and-installingreplacing) on front seat

Replacement only

1. Remove seat cover See «5213400 Replacing seat cover on left or right front seat (normal/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-400-replacing-seat-cover) or «5215400 Replacing seat cover for left or right front seat (sport/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-400-replacing-seat-cover) for front seat
2. Remove «SEAT BELT TENSIONER»(/bmw/z4/e89-2009-2013/remont/airbag/#restraints-repair__72-11-041-removing-and-installing)
3. Remove control unit for seat heating See «6135080 Removing and installing/replacing control unit/module for left or right seat adjustment»(/bmw/z4/e89-2009-2013/remont/horns/#general-electrical-system-repair__61-35-080-removing-and-installingreplacing) or «6135095 Removing and installing/replacing control unit/module for seat heating»(/bmw/z4/e89-2009-2013/remont/horns/#general-electrical-system-repair__61-35-095-removing-and-installingreplacing)

Seat mechanism is supplied complete with corresponding drive units.

Unlock plug housing (3) and remove from holder.

Disengage wiring harnesses from flexmat.

Installation

Make sure wiring harnesses are laid correctly.

Observe bending radius and do not lay wiring harnesses tensioned.

Release screws (1).

Tightening torque 52 10 05AZ .

Remove holder (2) for control unit.

Release screw (1).

Tightening torque 52 10 03AZ .

Remove belt buckle deflector trim (2).

Sport seat only

Release screws (1).

Remove connection for thigh support.

Necessary preliminary tasks

1. Remove «REAR PANEL ON FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-198-removing-and-installing)

Detach backrest cover (1) from backrest frame.

Note. Do not pop valve housing (1) out of backrest frame for this operation.

Carefully pull valve housing (1) forwards out of backrest frame.

Unlock quick connectors and detach air hoses from valve housing (1).

Note. Connections are coded against incorrect assembly.

Detach lumbar cushion (1) from spring wire.

Installation

Attach lumbar cushion (1) to second and fourth wires from below.

Press backrest support forwards a little.

Pull out lumbar cushion (1) downwards.

Feed air hoses out of backrest frame and spring wire.

Installation

Check lumbar cushion at top (1) and bottom (2) for damage.

Air hoses (3) must not be kinked.

Installation

Carry out function check .

Necessary preliminary tasks

1. Remove «REAR PANEL ON FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-198-removing-and-installing)

Detach backrest cover (1) from backrest frame.

Release cable tie (1).

Installation

Replace defective cable tie.

Open zip fastener (2).

Detach cable tie.

Installation

Replace defective cable ties.

Remove lumbar support pump (1) from backrest frame.

Unfasten plug connection (2) and disconnect.

Unclip air hose from holder (3).

Note. Picture shows removal without backrest cover for purposes of clarity.

Pop valve housing (2) for lumbar support in direction of arrow out of backrest frame.

Disengage wiring harness from cable tie (3).

Installation

Feed rubber plug (1) through backrest frame.

Pull rubber plug (1) and pop valve housing into backrest frame.

Check rubber sleeve of valve housing for correct seating in backrest frame.

Unfasten plug connection (1) and disconnect.

Unlock quick connector and detach air hoses (2) and (3 and 4) from valve housing.

Valve unit for lumbar support

1. (2) Hose (clear), lumbar drive
2. (3) Hose (blue), top lumbar cushion
3. (4) Hose (red), bottom lumbar cushion

Note. Connections are coded against incorrect assembly.

Note. Carry out function check .

52 14 040 Removing and installing/replacing outer cover on front left or right seat (normal/electric)

Necessary preliminary tasks

1. Remove «FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-000-removing-and-installing)

Note. Picture shows installed seat by way of example.

Move backrest to full rearward position.

Unclip release tab (2) for belt anchor fitting trim (1) with plastic wedge.

Release screw or catch (3).

Lever lugs (1) out of holders (2).

Scheme 69

Carefully pull cover (1) with carrier section (2) in front area off seat mechanism.

Press unlocking lug (3) with screwdriver and detach cover from carrier section.

Scheme 70

Raise lug (1) and unlock.

Reach between seat padding and cover (2) and pull cover off carrier section.

Scheme 71

Unlock and disconnect plug connections

1. Switch combination
2. Lumbar support
3. Backrest width adjustment

Scheme 72

Installation

Retaining clips and lugs of cover must not be damaged.

Scheme 73

Replacement only

Unlock catches of switch housing and remove switch from cover.

Scheme 74

Necessary preliminary tasks

1. Clamp off «BATTERY NEGATIVE LEAD»(/bmw/z4/e89-2009-2013/remont/horns/#general-electrical-system-repair__61-20-900-disconnecting-and-connecting)
2. Remove «REAR PANEL»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-198-removing-and-installing)
3. Remove «HEAD RESTRAINT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-390-removing-and-installing)

Version with seat heating only

Unfasten plug connection (1) and disconnect.

Detach cable tie.

Release wiring harness (2) from cable holders on seat mechanism.

Installation

Lay wiring harness without kinks and tension.

Unclip cable tie (1) from seat mechanism.

Release cable tie (1).

Installation

Replace defective cable tie.

Open zip fastener (2).

Detach backrest cover (1) from backrest frame.

Unscrew nuts (1).

Installation

Replace nuts.

Tightening torque 72 12 03AZ .

Detach mounting strip (4) from flexmat.

Carefully pull airbag module (3) with threaded pins out of backrest frame and feed out between padding (1) and inner bag (2).

Set down airbag module (3) to one side.

Installation

Pull inner bag (1) fully over airbag module and threaded pins.

Feed in mounting strip (2) of inner bag (1) through backrest frame.

Insert threaded pins into backrest frame and secure with new nuts.

No inner bag material is permitted to project through the hole in the inner frame.

Install nuts and tighten down.

Tightening torques 72 12 03AZ .

Installation

Inner bag must be between airbag module and backrest frame!

Engage mounting strip (1) of inner bag in flexmat.

Position inner bag (2) smoothly over backrest frame.

Engage backrest cover (3) in backrest frame.

Reposition backrest cover (1) at side and bottom and pull off with padding towards top from backrest frame.

Release all retainers in marked area.

Remove backrest cover from padding.

Note. Remove all remnants of retainers from backrest cover and padding.

Installation

Bend new retainer (2) with special tool 52 0 050 .

1. Padding
2. Retainer
3. Trim wire in padding
4. Trim wire in backrest cover
5. Backrest cover

Replacement of backrest cover

Pull trim wires out of backrest cover.

Cut new backrest cover to size and insert trim wires.

Necessary preliminary tasks

1. Remove seat and backrest covers See «5213400 Replacing seat cover on left or right front seat (normal/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-400-replacing-seat-cover) or «5213405 Replacing backrest cover for left or right front seat»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-405-replacing-backrest-cover)

Note. Heating element is bonded to the foam section and cannot be separated from each other without incurring damaging. Foam section and heating mat must be replaced.

Check new foam section

1. No obvious damage or material defects
2. All trim wires present in foam
3. No bubbles in foam section
4. No dirt/contamination on foam or residual foam
5. Pay attention to foam section on left and right

Check new heating mat

1. No obvious damage or material defects
2. All tear-off film pieces presents
3. Note variant by examining label on cable

Guide cable for backrest heating through foam hole.

Stick on main section (1)

1. Pull adhesive film pieces off main section (1) and stick to upper edge of main section foam until flush

Stick on bead section (2)

1. Pull adhesive film pieces off bead section (2) and stick on heating mat along bead section edges.
2. Press down evenly in outwards direction

Guide cable for seat heating through foam hole.

Stick on main section (1)

1. Pull adhesive film pieces off main section (1) and stick to upper edge of main section foam until flush

Stick on bead section (2)

1. Pull adhesive film pieces off bead section (2) and stick on heating mat along bead section edges.
2. Press down evenly in outwards direction

Check laying of heating mats

1. Heating mats laid without folds
2. Heating mats correctly positioned
3. All bonding surfaces stuck on

Note. Carry out function check .

Operation is described in

1. Replacing «SEAT COVER ON LEFT OR RIGHT FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-400-replacing-seat-cover) .

Enabling seat occupancy detector (CIS mat)

1. Connect BMW programming system
2. Code airbag control unit
3. Clear fault memory if necessary

Operation is described in

Replacing BACKREST COVER FOR LEFT OR RIGHT FRONT SEAT .

Necessary preliminary tasks

1. Remove «FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-000-removing-and-installing)
2. Remove «OUTER COVER»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-040-removing-and-installingreplacing) on front seat

Version with seat occupancy detector (CIS mat) only

1. Data line CIS
2. Earth cable, seat pan
3. Earth cable, backrest frame

Unlock all plug connections and disconnect.

Note. From build date 09/2009 onward, earth cable (3) not included on backrest frame.

Scheme 75

Version with seat heating only

Unlock plug connection (1) for seat heating and disconnect.

Unfasten cable strap.

Disengage wiring harness from cable clips (flexmat).

Version with seat occupancy detector without seat heating (CIS mat) only

Seat heating is integrated in the CIS mat and is stuck to the padding over the full surface.

Lay cable for seat heating as shown to flexmat and secure with cable strap.

Secure plug with cable strap to cable.

Vehicle exterior

Lever clip (1) out of seat cover.

Installation

If necessary, replace faulty clip.

Tunnel side

Disengage cover fastener (1) from belt deflector trim.

Detach seat cover (1) from seat frame.

Pull out cover welt (1) completely from seat frame (2).

Remove seat cover (1) with padding towards front/top.

Installation

Slide foam completely through backrest gap and seat structure. Make sure foam and bracing cloth are correctly fitted.

Version with seat heater and/or with seat occupancy detector (CIS mat)

Pull seat cover (1) with padding forward a little and feed wiring harnesses (2) out.

Remove seat cover (1) with padding towards front/top.

Carefully detach all retainers in side area from OKE strips (1).

Carefully turn seat cover over and release retainers from OKE strips (2).

Remove seat cover from padding.

Installation

Bend new retainers (2) with special tool 52 0 050 .

1. Padding
2. Retainer
3. Trim wire in padding
4. OKE strip in cover
5. Seat cover

Procedure for replacing the CIS mat together with the upholstery is described under

1. Remove padding for front seat See «5213400 Replacing seat cover on left or right front seat (normal/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-400-replacing-seat-cover) or «5215400 Replacing seat cover for left or right front seat (sport/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-400-replacing-seat-cover)

The work scope with CIS mat is different in the following work steps

Release the bolting point (1) of the ground cable on the seat pan.

Cut open cable strap (1).

Lift the locking tab and pull the connector out of the side of the connector housing.

Installation note

Replace cable tie (1).

Connector is encoded against incorrect assembly.

Installation note

Enabling seat occupancy detection (CIS mat)

1. Connect BMW programming system
2. Encode airbag control unit
3. Delete fault memory if necessary

Note. The function check on a repaired driver's or front passenger seat can be performed outside the vehicle by using adapter cable 61 4 360.

Use

Adapter cable 61 4 360 is connected to vehicle wiring harness (1) and removed seat (2).

Note. The function check on a repaired driver's or front passenger seat can be performed outside the vehicle by using adapter cable 61 4 360.

Use

Adapter cable 61 4 360 is connected to vehicle wiring harness (1) and removed seat (2).

Necessary preliminary tasks

1. Remove padding for front seat See «5213400 Replacing seat cover on left or right front seat (normal/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-400-replacing-seat-cover) or «5215400 Replacing seat cover for left or right front seat (sport/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-400-replacing-seat-cover)

Remove plug housing (1) from flexmat.

Cut all cable ties and disengage wiring harnesses from flexmat.

Installation

Make sure wiring harnesses are laid correctly.

Observe bending radius and do not lay wiring harnesses tensioned.

Disengage flexmat (1) at front.

Swing flexmat (1) down and disengage from seat frame.

Necessary preliminary tasks

1. Remove seat fabric See «5213400 Replacing seat cover on left or right front seat (normal/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-400-replacing-seat-cover) or «5215400 Replacing seat cover for left or right front seat (sport/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-400-replacing-seat-cover)

Release screws (1).

Tightening torque 52 10 07AZ .

Remove Isofix holder.

Necessary preliminary tasks

1. Open convertible top
2. Disconnect «BATTERY NEGATIVE LEAD»(/bmw/z4/e89-2009-2013/remont/horns/#general-electrical-system-repair__61-20-900-disconnecting-and-connecting)

Installation

1. Powerlok screws must be replaced and must not be reused
2. Powerlok screws are mechanical screw locks with trilobular threads
3. Screws are fitted with a Torx Plus system and can be released with a standard Torx screwdriver

Move seat to upper back position.

Release and dispose of screws (1).

Move seat forwards and position flush with seat runners.

Unclip release tab (2) for belt anchor fitting trim (1) with plastic wedge.

Release screw (1).

Tightening torque 72 11 2AZ .

Remove anchor fitting (2).

Installation

Make sure anchor fitting (2) is correctly seated on seat mechanism pin.

Release and dispose of screws (1).

Disconnect plug connection (1).

Lift out front seat.

Installation

1. Carpet must not get between seat rails and floor pan in area of fastening points (grating noises)
2. Replace microencapsulated screws
3. Insert all screws loose to avoid twisting
4. Tighten down all screws to specified torque

Tightening torque 52 10 1AZ .

Reach on left and right under head restraint and unclip in jerks in upward direction.

Release clips (1) with diagonal cutting pliers.

Remove rear panel (2) downwards with a turning action.

Note. Remove remnants of clips.

Installation

Retaining hooks (1) and bore holes (2) on rear panel (3) must not be damaged.

Replace faulty clips.

Necessary preliminary tasks

1. Remove «FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-000-removing-and-installing)
2. Remove «REAR PANEL»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-198-removing-and-installing) on front seat backrest

Release airbag wiring harness (2) from cable holders on flexmat.

Disconnect cable tie from clips.

Raise release clip (3) and pull plug (4) out of plug housing (1).

Installation

Always feed in cable tie (1) at narrow end of plug housing in direction of arrow.

Cables must be secured with insulation under cable tie.

Firmly tighten cable tie (1) to relieve strain. It must not be possible to move the cable.

Make sure plug (2) is correctly locked in plug housing (3).

Unfasten plug connection (1) and disconnect. Unclip cable.

Release wiring harness (3) from cable holders on seat mechanism.

Unfasten plug connection (2) and disconnect.

Scheme 76

Unhook backrest cover (1) on left and right.

Release screws (2) on left and right.

Tightening torque 52 10 02AZ .

Remove backrest frame (3) completely towards top.

Replacement

1. Remove backrest cover with padding.
2. Remove «SIDE AIRBAG»(/bmw/z4/e89-2009-2013/remont/airbag/#restraints-repair__72-12-050-remove-and-install) .
3. Remove lumbar support See «5215059 Removing and installing/replacing lumbar support pump with valve housing for lumbar support/backrest width adjustment»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-059-removing-and-installingreplacing) ; «5213059 Removing and installing/replacing lumbar support pump with valve housing for lumbar support»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-059-removing-and-installingreplacing) ; «5213055 Removing and installing/replacing lumbar support on front seat»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-055-removing-and-installingreplacing) or «5215061 Replacing both air cushions for backrest width adjustment on left or right front seat»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-061-replacing-both-air) .

This job is described under

1. Remove «BACKREST FRAME»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-030-removing-and-installingreplacing) on front seat

Replacement only

1. Remove seat cover See «5213400 Replacing seat cover on left or right front seat (normal/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-400-replacing-seat-cover) or «5215400 Replacing seat cover for left or right front seat (sport/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-400-replacing-seat-cover) for front seat
2. Remove «SEAT BELT TENSIONER»(/bmw/z4/e89-2009-2013/remont/airbag/#restraints-repair__72-11-041-removing-and-installing)
3. Remove control unit for seat heating See «6135080 Removing and installing/replacing control unit/module for left or right seat adjustment»(/bmw/z4/e89-2009-2013/remont/horns/#general-electrical-system-repair__61-35-080-removing-and-installingreplacing) or «6135095 Removing and installing/replacing control unit/module for seat heating»(/bmw/z4/e89-2009-2013/remont/horns/#general-electrical-system-repair__61-35-095-removing-and-installingreplacing)

Seat mechanism is supplied complete with corresponding drive units.

Unlock plug housing (3) and remove from holder.

Disengage wiring harnesses from flexmat.

Installation

Make sure wiring harnesses are laid correctly.

Observe bending radius and do not lay wiring harnesses tensioned.

Release screws (1).

Tightening torque 52 10 05AZ .

Remove holder (2) for control unit.

Release screw (1).

Tightening torque 52 10 03AZ .

Remove belt buckle deflector trim (2).

Sport seat only

Release screws (1).

Remove connection for thigh support.

Necessary preliminary tasks

1. Remove «REAR PANEL ON FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-198-removing-and-installing)

Detach backrest cover (1) from backrest frame.

Note. Do not pop valve housing (1) out of backrest frame for this operation. Carefully pull valve housing (1) forwards out of backrest frame.

Unlock quick connectors and detach air hoses from valve housing (1).

Note. Connections are coded against incorrect assembly.

Detach lumbar cushion (1) from spring wire.

Installation

Attach lumbar cushion (1) to second and fourth wires from below.

Press backrest support forwards a little.

Pull out lumbar cushion (1) downwards.

Feed air hoses out of backrest frame and spring wire.

Installation

Check lumbar cushion at top (1) and bottom (2) for damage.

Air hoses (3) must not be kinked.

Installation

Carry out function check .

52 15 059 Removing and installing/replacing lumbar support pump with valve housing for lumbar support/backrest width adjustment

Necessary preliminary tasks

1. Remove «REAR PANEL ON FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-198-removing-and-installing)

Detach backrest cover (1) from backrest frame.

Release cable tie (1).

Installation

Replace defective cable tie.

Open zip fastener (2).

Detach cable tie.

Installation

Replace defective cable ties.

Remove lumbar support pump (1) from backrest frame.

Unfasten plug connection (2) and disconnect.

Unclip air hose from holder (3).

Pop valve housing (2) for lumbar support in direction of arrow out of backrest frame.

Disengage wiring harness from cable tie (3).

Installation

Feed rubber plug (1) through backrest frame.

Pull rubber plug (1) and pop valve housing into backrest frame.

Check rubber sleeve of valve housing for correct seating in backrest frame.

Scheme 77

Unfasten plug connection (1) and disconnect.

Unlock quick connector and detach air hoses (2, 3 and 4) from valve housing.

Valve unit for backrest width adjustment

1. (2) Hose (clear), lumbar drive
2. (3) Hose (clear), right lumbar cushion
3. (4) Hose (clear), left lumbar cushion

Note. Connections are coded against incorrect assembly.

Scheme 78

Note. Carry out function check .

Necessary preliminary tasks

1. Remove «FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-000-removing-and-installing)

Note. Picture shows installed seat by way of example.

Raise lock (3) and lever out handle

1. for backrest angle adjustment and
2. for seat height adjustment

with special tool 00 9 317.

Release screw (1).

Tightening torque 52 10 10AZ .

Note. Trim (2) is engaged in marked area.

Press lock (3) and pull trim (2) off seat mechanism.

If necessary, lever out carefully with special tool 00 9 317.

If necessary, unlock plug connection (1) for backrest width adjustment and disconnect.

If necessary, unlock plug connection (2) for lumbar support and disconnect.

Replacement

If necessary, remove backrest width adjustment switch and lumbar support switch.

Installation

Make sure backrest width adjustment and lumbar support switches are correctly engaged.

52 15 403 Removing and installing/replacing thigh support cover on front seat (sport/manual)

Release thigh support (1) and move forward.

Lever welt of seat cover (2) out of thigh support.

Scheme 79

Lever out cover welt in marked area (1).

Disengage trim thread in marked area (2) from thigh support.

Remove cover with padding.

Scheme 80

Pull cover (1) off padding (2).

Scheme 81

52 15 050 Removing and installing/replacing thigh support on left or right front seat (sport/manual)

Release thigh support (1) and move forward.

Lever welt (3) of seat cover (2) out of thigh support (1).

Scheme 82

Do not extend thigh support to its full extent.

Keep actuator (1) pressed in order to unlock centering element (2).

Carefully raise end stop (3) for thigh support with a screwdriver and at same time pull thigh support forwards out of guide rails.

View of thigh support mechanism

Scheme 83

1. End stop for thigh support
2. Locking mechanism for thigh support View of seat frame mechanism
3. Guide rail on seat with depth arrester
4. Guide rail on seat with end stop

Scheme 84

Unfasten plug connection (1) and disconnect.

Note. Check guide rails (2) and adjustment mechanism (3) for damage.

Scheme 85

Necessary preliminary tasks

1. Clamp off «BATTERY NEGATIVE LEAD»(/bmw/z4/e89-2009-2013/remont/horns/#general-electrical-system-repair__61-20-900-disconnecting-and-connecting)
2. Remove «REAR PANEL»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-198-removing-and-installing)
3. Remove «HEAD RESTRAINT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-390-removing-and-installing)

Version with seat heating only

Unfasten plug connection (1) and disconnect.

Detach cable tie.

Release wiring harness (2) from cable holders on seat mechanism.

Installation

Lay wiring harness without kinks and tension.

Unclip cable tie (1) from seat mechanism.

Release cable tie (1).

Installation

Replace defective cable tie.

Open zip fastener (2).

Detach backrest cover (1) from backrest frame.

Unscrew nuts (1).

Installation

Replace nuts.

Tightening torque 72 12 03AZ .

Detach mounting strip (4) from flexmat.

Carefully pull airbag module (3) with threaded pins out of backrest frame and feed out between padding (1) and inner bag (2).

Set down airbag module (3) to one side.

Installation

Pull inner bag (1) fully over airbag module and threaded pins.

Feed in mounting strip (2) of inner bag (1) through backrest frame.

Insert threaded pins into backrest frame and secure with new nuts.

No inner bag material is permitted to project through the hole in the inner frame.

Install nuts and tighten down.

Tightening torques 72 12 03AZ .

Installation

Inner bag must be between airbag module and backrest frame!

Engage mounting strip (1) of inner bag in flexmat.

Position inner bag (2) smoothly over backrest frame.

Engage backrest cover (3) in backrest frame.

Reposition backrest cover (1) at side and bottom and pull off with padding towards top from backrest frame.

Release all retainers in marked area.

Remove backrest cover from padding.

Note. Remove all remnants of retainers from backrest cover and padding.

Installation

Bend new retainer (2) with special tool 52 0 050 .

1. Padding
2. Retainer
3. Trim wire in padding
4. Trim wire in backrest cover
5. Backrest cover

Replacement of backrest cover

Pull trim wires out of backrest cover.

Cut new backrest cover to size and insert trim wires.

52 15 451 Replacing backrest heating element for left or right sports seat

Operation is described in

1. Replacing «HEATING ELEMENTS FOR LEFT OR RIGHT FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-455-replacing-heating-elements)

52 15 061 Replacing both air cushions for backrest width adjustment on left or right front seat

Necessary preliminary tasks

1. Partially remove «BACKREST COVER»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-198-removing-and-installing)

Note. Do not pop valve housing (1) out of backrest frame for this operation.

Carefully pull valve housing (1) forwards out of backrest frame.

Unlock quick connectors and detach air hoses from valve housing (1).

Note. Connections are coded against incorrect assembly.

Scheme 86

Note. Removal of the cushion on the left side is depicted; proceed in the same way for the right side.

Air cushion must be completely drained.

Unclip carrier for backrest width adjustment from backrest frame.

Feed carrier with air hose out of backrest frame.

Installation

Make sure the carrier for backrest width adjustment is fitted correctly on the backrest frame.

Install air hoses without kinks.

Check air cushion for damage.

Scheme 87

Note. Carry out function check

52 15 450 Replacing cushion heating element for left or right front seat

Operation is described in

1. Replacing «HEATING ELEMENTS FOR LEFT OR RIGHT FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-455-replacing-heating-elements)

52 15 452 Replacing heating element for left or right front seat (thigh support)

Operation is described in

1. Replacing «HEATING ELEMENTS FOR LEFT OR RIGHT FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-455-replacing-heating-elements)

52 15 455 Replacing heating elements for left or right front seat (Sport)

Necessary preliminary tasks

1. Remove «SEAT FABRIC»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-400-replacing-seat-cover)
2. Remove «BACKREST COVER»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-405-replacing-backrest-cover)
3. Remove «THIGH SUPPORT COVER»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-403-removing-and-installingreplacing)

Note. Heating elements are bonded with a foam section and cannot be separated from each other without causing damage. Foam section and heating elements must be replaced.

Check new foam section

1. No obvious damage or material defects
2. All trim wires present in foam
3. No bubbles in foam section
4. No dirt/contamination on foam or residual foam
5. Pay attention to foam section on left and right

Check new heating mat

1. No obvious damage or material defects
2. All tear-off film pieces presents
3. Note variant by examining label on cable

Guide cable for backrest heating through foam hole.

Stick on main section (1)

1. Pull adhesive film pieces off main section (1) and stick to upper edge of main section foam until flush

Stick on bead section (2)

1. Pull adhesive film pieces off bead section (2) and stick on heating mat along bead section edges.
2. Press down evenly in outwards direction

Scheme 88

Guide cable for seat heating through foam hole.

Stick on STV heating mat (1)

1. Pull off adhesive film and stick to rear foam edge until flush

Stick on bead section (2)

1. Pull adhesive film pieces off bead section (2) and stick on heating mat along bead section edges.
2. Press down evenly in outwards direction

Stick on main section (3)

1. Pull adhesive film pieces off main section (3) and stick to upper edge of main section foam until flush

Scheme 89

Check laying of heating mats

1. Heating mats laid without folds
2. Heating mats correctly positioned
3. All bonding surfaces stuck on

Note. Carry out function check

52 15 415 Replacing padding for left or right front seat (sport/manual)

Operation is described in

Replacing SEAT COVER ON LEFT OR RIGHT FRONT SEAT .

52 15 420 Replacing padding for left or right front seat backrest (sport/manual)

Operation is described in

Replacing BACKREST COVER FOR LEFT OR RIGHT FRONT SEAT .

52 15 417 Replacing padding for left or right thigh support (sport/manual)

This operation is described in section on

Replacing THIGH SUPPORT COVER ON LEFT OR RIGHT FRONT SEAT .

52 15 400 Replacing seat cover for left or right front seat (sport/manual)

Necessary preliminary tasks

1. Remove «FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-000-removing-and-installing)
2. Remove «THIGH SUPPORT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-050-removing-and-installingreplacing)
3. Manual version: Remove «OUTER COVER»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-040-removing-and-installingreplacing)
4. Electric version

Remove CARRIER FOR COVER

Enabling seat occupancy detector (CIS mat)

1. Connect BMW programming system
2. Encode airbag control unit
3. Clear fault memory if necessary

Guide all cables carefully through seat and backrest mechanism.

Make sure cable is routed without kinks and tension.

Make sure plug connections are correctly locked.

Make sure plugs are correctly seated in catches.

Version with seat occupancy detector (CIS mat) only

1. Data line CIS
2. Earth cable, seat pan
3. Earth cable, backrest frame

Unlock all plug connections and disconnect.

Note. From build date 09/2009 onward, earth cable (3) not included on backrest frame.

Version with seat heating only

Unlock plug connection (1) for seat heating and disconnect.

Unfasten cable strap.

Disengage wiring harness from cable clips (flexmat).

Version with seat occupancy detector (CIS mat) without seat heating only

Cable for seat heating, seat padding

Seat heating is integrated in the CIS mat and is stuck to the padding over the full surface.

Lay cable for seat heating as shown to flexmat and secure with cable strap.

Secure plug with cable strap to cable.

Cable for seat heating, thigh support

Cramp cable (1) to welt strip with retainers (2).

Installation

Bend retainers (2) with special tool 52 0 050 .

Scheme 90

Clamp plug (1) behind welt strip (2).

Scheme 91

Unlock retaining lugs (1).

Remove seat trim (2) downwards.

Installation

Seat trim (2) must not be damaged.

Scheme 92

Lever clip (1) out of seat cover on left and right.

Installation

If necessary, replace faulty clip.

Tunnel side

Disengage cover fastener (1) from belt deflector trim.

Detach seat cover (1) from seat frame.

Pull out cover welt (1) completely from seat frame (2).

Scheme 93

Remove seat cover (1) with padding towards front/top.

Installation

Slide foam completely through backrest gap and seat structure. Make sure foam and bracing cloth are correctly fitted.

Scheme 94

Version with seat heating and/or seat occupancy detector (CIS mat)

Release the corresponding plug connections depending on the version and disconnect.

Pull seat cover (1) with padding forward a little and feed wiring harness (2) out.

Remove seat cover (1) with padding towards front/top.

Release all retainers in marked area.

Scheme 95

Detach all retainers in side area from OKE strips.

Carefully fold back seat cover and release retainers from OKE strips.

Remove seat cover from padding.

Scheme 96

Installation

Bend new retainers (2) with special tool 52 0 050 .

1. Padding
2. Retainer
3. Trim wire in padding
4. OKE strip in cover
5. Seat cover

Scheme 97

Release screws (1) of rockers for seat height adjustment.

Installation

Carefully bend side section back and feed rocker out of top rail.

Tilt front seat back.

Unfasten plug connection (1) and disconnect.

Unclip central connector (2) from seat mechanism.

Unclip control units (1) See 6135080 Removing and installing/replacing control unit/module for left or right seat adjustment or 6135095 Removing and installing/replacing control unit/module for seat heating .

Unfasten plug connection (1) and disconnect.

Bend metal tab (1) open.

Lift drive (1) and flex shaft (2) out of guide (4) in direction of arrow.

Detach drive (1) from rubber mounts (3).

Detach flex shaft (3) from drive (1).

Release screws (1) at front.

Installation

Install new drive for longitudinal seat adjustment.

Move front seat forwards.

Release screws (1) at rear.

Lift out front seat and assemble.

Installation

1. Make sure flex shaft is correctly fitted on drive
2. Carpet must not get between seat rails and floor pan in area of fastening points (grating noises)
3. Powerlok screws must be replaced and must not be reused
4. Powerlok screws are mechanical screw locks with trilobular threads
5. Insert all screws loose to avoid twisting
6. Tighten down all screws to specified torque

Tightening torque 52 10 1AZ .

Note. The function check on a repaired driver's or front passenger seat can be performed outside the vehicle by using adapter cable 61 4 360.

Use

Adapter cable 61 4 360 is connected to vehicle wiring harness (1) and removed seat (2).

Note. The function check on a repaired driver's or front passenger seat can be performed outside the vehicle by using adapter cable 61 4 360.

Use

Adapter cable 61 4 360 is connected to vehicle wiring harness (1) and removed seat (2).

Necessary preliminary tasks

1. Remove padding for front seat See «5213400 Replacing seat cover on left or right front seat (normal/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-400-replacing-seat-cover) or «5215400 Replacing seat cover for left or right front seat (sport/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-400-replacing-seat-cover)

Remove plug housing (1) from flexmat.

Cut all cable ties and disengage wiring harnesses from flexmat.

Installation

Make sure wiring harnesses are laid correctly.

Observe bending radius and do not lay wiring harnesses tensioned.

Disengage flexmat (1) at front.

Swing flexmat (1) down and disengage from seat frame.

Necessary preliminary tasks

1. Remove seat fabric See «5213400 Replacing seat cover on left or right front seat (normal/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-400-replacing-seat-cover) or «5215400 Replacing seat cover for left or right front seat (sport/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-400-replacing-seat-cover)

Release screws (1).

Tightening torque 52 10 07AZ .

Remove Isofix holder.

Necessary preliminary tasks

1. Remove «OUTER COVER»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-14-040-removing-and-installingreplacing)

Cut open cable tie (1).

Unlock and disconnect plug connections (2) on servodrive.

Release screw (3).

Tightening torque 52 10 06AZ .

Unclip carrier in marked area and remove.

Installation

Replace cable ties.

Make sure carrier is correctly seated on seat mechanism.

Necessary preliminary tasks

1. Open convertible top
2. Disconnect «BATTERY NEGATIVE LEAD»(/bmw/z4/e89-2009-2013/remont/horns/#general-electrical-system-repair__61-20-900-disconnecting-and-connecting)

Installation

1. Powerlok screws must be replaced and must not be reused
2. Powerlok screws are mechanical screw locks with trilobular threads
3. Screws are fitted with a Torx Plus system and can be released with a standard Torx screwdriver

Move seat to upper back position.

Release and dispose of screws (1).

Move seat forwards and position flush with seat runners.

Unclip release tab (2) for belt anchor fitting trim (1) with plastic wedge.

Release screw (1).

Tightening torque 72 11 2AZ .

Remove anchor fitting (2).

Installation

Make sure anchor fitting (2) is correctly seated on seat mechanism pin.

Release and dispose of screws (1).

Disconnect plug connection (1).

Lift out front seat.

Installation

1. Carpet must not get between seat rails and floor pan in area of fastening points (grating noises)
2. Replace microencapsulated screws
3. Insert all screws loose to avoid twisting
4. Tighten down all screws to specified torque

Tightening torque 52 10 1AZ .

Reach on left and right under head restraint and unclip in jerks in upward direction.

Release clips (1) with diagonal cutting pliers.

Remove rear panel (2) downwards with a turning action.

Note. Remove remnants of clips.

Installation

Retaining hooks (1) and bore holes (2) on rear panel (3) must not be damaged.

Replace faulty clips.

Necessary preliminary tasks

1. Remove «FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-000-removing-and-installing)
2. Remove «REAR PANEL»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-198-removing-and-installing) on front seat backrest

Release airbag wiring harness (2) from cable holders on flexmat.

Disconnect cable tie from clips.

Raise release clip (3) and pull plug (4) out of plug housing (1).

Installation

Always feed in cable tie (1) at narrow end of plug housing in direction of arrow.

Cables must be secured with insulation under cable tie.

Firmly tighten cable tie (1) to relieve strain. It must not be possible to move the cable.

Make sure plug (2) is correctly locked in plug housing (3).

Unfasten plug connection (1) and disconnect.

Unclip cable.

Release wiring harness (3) from cable holders on seat mechanism.

Unfasten plug connection (2) and disconnect.

Unhook backrest cover (1) on left and right.

Release screws (2) on left and right.

Tightening torque 52 10 02AZ .

Remove backrest frame (3) completely towards top.

Replacement

1. Remove backrest cover with padding.
2. Remove «SIDE AIRBAG»(/bmw/z4/e89-2009-2013/remont/airbag/#restraints-repair__72-12-050-remove-and-install) .
3. Remove lumbar support See «5215059 Removing and installing/replacing lumbar support pump with valve housing for lumbar support/backrest width adjustment»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-059-removing-and-installingreplacing) ; «5213059 Removing and installing/replacing lumbar support pump with valve housing for lumbar support»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-059-removing-and-installingreplacing) ; «5213055 Removing and installing/replacing lumbar support on front seat»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-055-removing-and-installingreplacing) or «5215061 Replacing both air cushions for backrest width adjustment on left or right front seat»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-061-replacing-both-air) .

This job is described under

1. Remove «BACKREST FRAME»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-030-removing-and-installingreplacing) on front seat

Replacement only

1. Remove seat cover See «5213400 Replacing seat cover on left or right front seat (normal/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-400-replacing-seat-cover) or «5215400 Replacing seat cover for left or right front seat (sport/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-400-replacing-seat-cover) for front seat
2. Remove «SEAT BELT TENSIONER»(/bmw/z4/e89-2009-2013/remont/airbag/#restraints-repair__72-11-041-removing-and-installing)
3. Remove control unit for seat heating

Seat mechanism is supplied complete with corresponding drive units.

Unlock plug housing (3) and remove from holder.

Disengage wiring harnesses from flexmat.

Installation

Make sure wiring harnesses are laid correctly.

Observe bending radius and do not lay wiring harnesses tensioned.

Release screws (1).

Tightening torque 52 10 05AZ .

Remove holder (2) for control unit.

Release screw (1).

Tightening torque 52 10 03AZ .

Remove belt buckle deflector trim (2).

Sport seat only

Release screws (1).

Remove connection for thigh support.

Necessary preliminary tasks

1. Remove «REAR PANEL ON FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-198-removing-and-installing)

Detach backrest cover (1) from backrest frame.

Release cable tie (1).

Installation

Replace defective cable tie.

Open zip fastener (2).

Detach cable tie.

Installation

Replace defective cable ties.

Remove lumbar support pump (1) from backrest frame.

Unfasten plug connection (2) and disconnect.

Unclip air hose from holder (3).

Pop valve housing (2) for lumbar support in direction of arrow out of backrest frame.

Disengage wiring harness from cable tie (3).

Installation

Feed rubber plug (1) through backrest frame.

Pull rubber plug (1) and pop valve housing into backrest frame.

Check rubber sleeve of valve housing for correct seating in backrest frame.

Unfasten plug connection (1) and disconnect.

Unlock quick connector and detach air hoses (2, 3 and 4) from valve housing.

Valve unit for backrest width adjustment

1. (2) Hose (clear), lumbar drive
2. (3) Hose (clear), right lumbar cushion
3. (4) Hose (clear), left lumbar cushion

Note. Connections are coded against incorrect assembly.

Note. Carry out function check .

Necessary preliminary tasks

1. Remove «FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-000-removing-and-installing)

Note. Picture shows installed seat by way of example.

Move backrest to full rearward position.

Unclip release tab (2) for belt anchor fitting trim (1) with plastic wedge.

Release screw or catch (3).

Lever lugs (1) out of holders (2).

Carefully pull cover (1) with carrier section (2) in front area off seat mechanism.

Press unlocking lug (3) with screwdriver and detach cover from carrier section.

Raise lug (1) and unlock.

Reach between seat padding and cover (2) and pull cover off carrier section.

Unlock and disconnect plug connections

1. Switch combination
2. Lumbar support
3. Backrest width adjustment

Installation

Retaining clips and lugs of cover must not be damaged.

Replacement only

Unlock catches of switch housing and remove switch from cover.

Release thigh support (1) and move forward.

Lever welt of seat cover (2) out of thigh support.

Lever out cover welt in marked area (1).

Disengage trim thread in marked area (2) from thigh support.

Remove cover with padding.

Pull cover (1) off padding (2).

Necessary preliminary tasks

1. Clamp off «BATTERY NEGATIVE LEAD»(/bmw/z4/e89-2009-2013/remont/horns/#general-electrical-system-repair__61-20-900-disconnecting-and-connecting)
2. Remove «REAR PANEL»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-198-removing-and-installing)
3. Remove «HEAD RESTRAINT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-390-removing-and-installing)

Version with seat heating only

Unfasten plug connection (1) and disconnect.

Detach cable tie.

Release wiring harness (2) from cable holders on seat mechanism.

Installation

Lay wiring harness without kinks and tension.

Unclip cable tie (1) from seat mechanism.

Release cable tie (1).

Installation

Replace defective cable tie.

Open zip fastener (2).

Detach backrest cover (1) from backrest frame.

Unscrew nuts (1).

Installation

Replace nuts.

Tightening torque 72 12 03AZ .

Detach mounting strip (4) from flexmat.

Carefully pull airbag module (3) with threaded pins out of backrest frame and feed out between padding (1) and inner bag (2).

Set down airbag module (3) to one side.

Installation

Pull inner bag (1) fully over airbag module and threaded pins.

Feed in mounting strip (2) of inner bag (1) through backrest frame.

Insert threaded pins into backrest frame and secure with new nuts.

No inner bag material is permitted to project through the hole in the inner frame.

Install nuts and tighten down.

Tightening torques 72 12 03AZ .

Installation

Inner bag must be between airbag module and backrest frame!

Engage mounting strip (1) of inner bag in flexmat.

Position inner bag (2) smoothly over backrest frame.

Engage backrest cover (3) in backrest frame.

Reposition backrest cover (1) at side and bottom and pull off with padding towards top from backrest frame.

Release all retainers in marked area.

Remove backrest cover from padding.

Note. Remove all remnants of retainers from backrest cover and padding.

Installation

Bend new retainer (2) with special tool 52 0 050 .

1. Padding
2. Retainer
3. Trim wire in padding
4. Trim wire in backrest cover
5. Backrest cover

Replacement of backrest cover

Pull trim wires out of backrest cover.

Cut new backrest cover to size and insert trim wires.

Operation is described in

1. Replacing «HEATING ELEMENTS FOR LEFT OR RIGHT FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-455-replacing-heating-elements)

52 16 056 Replacing both air cushions for backrest width adjustment on left or right front seat (Sport/electric)

Operation is identical to

Replacing BOTH AIR CUSHIONS FOR BACKREST WIDTH ADJUSTMENT on left or right front seat (Sport/mechanical).

Operation is described in

1. Replacing «HEATING ELEMENTS FOR LEFT OR RIGHT FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-455-replacing-heating-elements)

Operation is described in

1. Replacing «HEATING ELEMENTS FOR LEFT OR RIGHT FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-455-replacing-heating-elements)

Necessary preliminary tasks

1. Remove «SEAT FABRIC»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-400-replacing-seat-cover)
2. Remove «BACKREST COVER»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-405-replacing-backrest-cover)
3. Remove «THIGH SUPPORT COVER»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-403-removing-and-installingreplacing)

Note. Heating elements are bonded with a foam section and cannot be separated from each other without causing damage. Foam section and heating elements must be replaced.

Check new foam section

1. No obvious damage or material defects
2. All trim wires present in foam
3. No bubbles in foam section
4. No dirt/contamination on foam or residual foam
5. Pay attention to foam section on left and right

Check new heating mat

1. No obvious damage or material defects
2. All tear-off film pieces presents
3. Note variant by examining label on cable

Guide cable for backrest heating through foam hole.

Stick on main section (1)

1. Pull adhesive film pieces off main section (1) and stick to upper edge of main section foam until flush

Stick on bead section (2)

1. Pull adhesive film pieces off bead section (2) and stick on heating mat along bead section edges.
2. Press down evenly in outwards direction

Guide cable for seat heating through foam hole.

Stick on STV heating mat (1)

1. Pull off adhesive film and stick to rear foam edge until flush

Stick on bead section (2)

1. Pull adhesive film pieces off bead section (2) and stick on heating mat along bead section edges.
2. Press down evenly in outwards direction

Stick on main section (3)

1. Pull adhesive film pieces off main section (3) and stick to upper edge of main section foam until flush

Check laying of heating mats

1. Heating mats laid without folds
2. Heating mats correctly positioned
3. All bonding surfaces stuck on

Note. Carry out function check

52 16 050 Replacing lumbar cushion on left or right front seat

Removal is identical to

Removing and installing/replacing LUMBAR SUPPORT ON FRONT SEAT

Operation is described in

Replacing SEAT COVER ON LEFT OR RIGHT FRONT SEAT .

Operation is described in

Replacing BACKREST COVER FOR LEFT OR RIGHT FRONT SEAT .

This operation is described in section on

Replacing THIGH SUPPORT COVER ON LEFT OR RIGHT FRONT SEAT .

Necessary preliminary tasks

1. Remove «FRONT SEAT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-000-removing-and-installing)
2. Remove «THIGH SUPPORT»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-050-removing-and-installingreplacing)
3. Manual version: Remove «OUTER COVER»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-040-removing-and-installingreplacing)
4. Electric version

Remove CARRIER FOR COVER

Enabling seat occupancy detector (CIS mat)

1. Connect BMW programming system
2. Encode airbag control unit
3. Clear fault memory if necessary

Guide all cables carefully through seat and backrest mechanism.

Make sure cable is routed without kinks and tension.

Make sure plug connections are correctly locked.

Make sure plugs are correctly seated in catches.

Version with seat occupancy detector (CIS mat) only

1. Data line CIS
2. Earth cable, seat pan
3. Earth cable, backrest frame

Unlock all plug connections and disconnect.

Note. From build date 09/2009 onward, earth cable (3) not included on backrest frame.

Version with seat heating only

Unlock plug connection (1) for seat heating and disconnect.

Unfasten cable strap.

Disengage wiring harness from cable clips (flexmat).

Version with seat occupancy detector (CIS mat) without seat heating only

Cable for seat heating, seat padding

Seat heating is integrated in the CIS mat and is stuck to the padding over the full surface.

Lay cable for seat heating as shown to flexmat and secure with cable strap.

Secure plug with cable strap to cable.

Cable for seat heating, thigh support

Cramp cable (1) to welt strip with retainers (2).

Installation

Bend retainers (2) with special tool 52 0 050 .

Clamp plug (1) behind welt strip (2).

Unlock retaining lugs (1).

Remove seat trim (2) downwards.

Installation

Seat trim (2) must not be damaged.

Lever clip (1) out of seat cover on left and right.

Installation

If necessary, replace faulty clip.

Tunnel side

Disengage cover fastener (1) from belt deflector trim.

Detach seat cover (1) from seat frame.

Pull out cover welt (1) completely from seat frame (2).

Remove seat cover (1) with padding towards front/top.

Installation

Slide foam completely through backrest gap and seat structure. Make sure foam and bracing cloth are correctly fitted.

Version with seat heating and/or seat occupancy detector (CIS mat)

Release the corresponding plug connections depending on the version and disconnect.

Pull seat cover (1) with padding forward a little and feed wiring harness (2) out.

Remove seat cover (1) with padding towards front/top.

Release all retainers in marked area.

Detach all retainers in side area from OKE strips.

Carefully fold back seat cover and release retainers from OKE strips.

Remove seat cover from padding.

Installation

Bend new retainers (2) with special tool 52 0 050 .

1. Padding
2. Retainer
3. Trim wire in padding
4. OKE strip in cover
5. Seat cover

Procedure for replacing the CIS mat together with the upholstery is described under

1. Remove padding for front seat See «5213400 Replacing seat cover on left or right front seat (normal/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-400-replacing-seat-cover) or «5215400 Replacing seat cover for left or right front seat (sport/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-400-replacing-seat-cover)

The work scope with CIS mat is different in the following work steps

Release the bolting point (1) of the ground cable on the seat pan.

Cut open cable strap (1).

Lift the locking tab and pull the connector out of the side of the connector housing.

Installation note

Replace cable tie (1).

Connector is encoded against incorrect assembly.

Installation note

Enabling seat occupancy detection (CIS mat)

1. Connect BMW programming system
2. Encode airbag control unit
3. Delete fault memory if necessary

Procedure for replacing the CIS mat together with the upholstery is described under

1. Remove padding for front seat See «5213400 Replacing seat cover on left or right front seat (normal/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-13-400-replacing-seat-cover) or «5215400 Replacing seat cover for left or right front seat (sport/manual)»(/bmw/z4/e89-2009-2013/remont/seats/#seats-repair__52-15-400-replacing-seat-cover)

The work scope with CIS mat is different in the following work steps

Release the bolting point (1) of the ground cable on the seat pan.

Cut open cable strap (1).

Lift the locking tab and pull the connector out of the side of the connector housing.

Installation note

Replace cable tie (1).

Connector is encoded against incorrect assembly.

Installation note

Enabling seat occupancy detection (CIS mat)

1. Connect BMW programming system
2. Encode airbag control unit
3. Delete fault memory if necessary

See also:
• 52 10 07AZ
• BATTERY NEGATIVE LEAD
• 72 11 2AZ
• SAFETY REGULATIONS
• SIDE AIRBAG
• SEAT BELT TENSIONER
• 6135080 Removing and installing/replacing control unit/module for left or right seat adjustment
• 6135095 Removing and installing/replacing control unit/module for seat heating
• 52 0 050
• 5213400 Replacing seat cover on left or right front seat (normal/manual)
• 52 15 400 Replacing seat cover for left or right front seat (sport/manual)
• 5215400 Replacing seat cover for left or right front seat (sport/manual)
• FRONT SEAT
• REAR PANEL
• 5215059 Removing and installing/replacing lumbar support pump with valve housing for lumbar support/backrest width adjustment
• 5213059 Removing and installing/replacing lumbar support pump with valve housing for lumbar support
• 5213055 Removing and installing/replacing lumbar support on front seat
• 5215061 Replacing both air cushions for backrest width adjustment on left or right front seat
• BACKREST FRAME
• function check
• HEAD RESTRAINT
• 5213405 Replacing backrest cover for left or right front seat
• 5213040 Removing and installing/replacing outer cover on left or right front seat backrest (normal/manual)
• OUTER COVER
• HEATING ELEMENTS FOR LEFT OR RIGHT FRONT SEAT
• THIGH SUPPORT COVER
• THIGH SUPPORT
• CARRIER FOR COVER