Contents Wiring diagrams Section: Seats All sections

Seats, Frames: Other Porsche Boxster 987

Seats 136 illustrations ~8750 words

Removing seat rail cover

Installation Location

Scheme 35

Scheme 35: Removing seat rail cover

Note. Caution! Locking lugs can break.

Scheme 36

Scheme 36

1. Insert a screwdriver -1- under the lugs and press upwards slightly -Arrow A-. (Scheme 36)

2. Pull seat rail covers -2- on right and left seat rails off in forward direction. (Scheme 36)

Undoing seat screws at front

Installation Location

1. Move seat -1- to its rear limit position and undo the front fastening screws -2- from the right and left seat rails -3-. see scheme 4

Undoing seat screws at rear

Installation Location

Scheme 37

Scheme 37

1. Move seat to its front limit position and undo the fastening screws -1- from the right and left seat rails -2-. see scheme 6

Releasing electrical line

Installation Location

1. Disconnect battery. Refer to 27 06 IN External power connection, jump lead starting - as of MY 2005 (All Models) .

Scheme 38

Scheme 38

2. Tilt seat backwards.

3. Unclip wiring harness -1-. see scheme 8

Disconnecting central plug

Installation Location

Scheme 39

Scheme 39

1. Release plug connector locking device -1- on the side -Arrow A- and separate the plug connection -2- -Arrow B-. see scheme 10

Disconnecting electrical plug connection (power seat)

Installation Location

Note. Only for vehicles with electrically adjustable seat

Scheme 40

Scheme 40

1. Release electrical plug connection -1- by activating the locking tab -arrow A- and remove from seat memory control unit -arrow B-. see scheme 12

2. Remove front seat.

Fastening electric line

Installation Location

WARNINGIf the wiring at the telephone holder is not routed correctly, the wires can catch at the seat. Danger of destroying/damaging wire harness for the telephone control unit

> The wire harness at the telephone holder must not be routed over the edge.

Scheme 41

Scheme 41

Note. The routing of the wire harness for the control unit must be checked before installing the seat.

The wire harness must not be routed over the cover, but should be laid along side the cover -A-. (Scheme 42)

Scheme 42

Scheme 42

Note. Before installing and securing the front seat, make sure the electric lines are not pinched or damaged.

1. Place front seat in vehicle and tilt backwards.

2. Check tie-wrap -1-; replace tie-wrap -1- if necessary. see scheme 15

3. Clip wire harness -2- into place. see scheme 15

Connecting electrical plug connection (power seat)

Installation Location

Note. Only for vehicles with electrically adjustable seat

Scheme 43

Scheme 43

1. Push in electrical plug connection -1- -arrow A- until the locking tab audibly engages -arrow B-. see scheme 17

Locking central plug

Installation Location

Scheme 44

Scheme 44

1. Join the plug connection -1- -Arrow A-, press in plug connector locking device -2- on the side -Arrow B-. see scheme 19

Fit seat rail cover

Installation Location

Scheme 45

Scheme 45

1. Push seat rail cover -1- into front end of the left and right seat rails -Arrow A- until the locking tab audibly engages -Arrow B-. see scheme 25

Installation Location

Note. Caution! Locking lugs can break.

1. Insert a screwdriver -1- under the lugs and press upwards slightly -Arrow A-. see scheme 27

2. Pull seat rail covers -2- on right and left seat rails off in forward direction. see scheme 27

Installation Location

1. Move seat -1- to its rear limit position and undo the front fastening screws -2- from the right and left seat rails -3-. see scheme 29

Installation Location

1. Move seat to its front limit position and undo the fastening screws -1- from the right and left seat rails -2-. see scheme 31

Installation Location

1. Disconnect battery. Refer to 27 06 IN External power connection, jump lead starting - as of MY 2005 (All Models) .

2. Tilt seat backwards.

3. Unclip wiring harness -1-. see scheme 33

Installation Location

1. Release plug connector locking device -1- on the side -Arrow A- and separate the plug connection -2- -Arrow B-. see scheme 35

Installation Location

Note. Only for vehicles with electrically adjustable seat

1. Release electrical plug connection -1- by activating the locking tab -arrow A- and remove from seat memory control unit -arrow B-. (Scheme 47)

2. Remove front seat.

Disconnecting the electrical plug connection of the AWS control module

Installation Location

Scheme 46

Scheme 46: Disconnecting the electrical plug connection of the AWS control module

Note. Only for USA/Canada version vehicles.

Note. Passenger's seat only.

Scheme 47

Scheme 47

1. Release electric connector -1- by pressing the lug -arrow a- and pull off from control module. see scheme 39

Installation Location

WARNINGIf the wiring at the telephone holder is not routed correctly, the wires can catch at the seat. Danger of destroying/damaging wire harness for the telephone control unit

> The wire harness at the telephone holder must not be routed over the edge.

Note. The routing of the wire harness for the control unit must be checked before installing the seat.

The wire harness must not be routed over the cover, but should be laid along side the cover -A-. see scheme 41

Note. Before installing and securing the front seat, make sure the electric lines are not pinched or damaged.

1. Place front seat in vehicle and tilt backwards.

2. Check tie-wrap -1-; replace tie-wrap -1- if necessary. (Scheme 48)

3. Clip wire harness -2- into place. (Scheme 48)

Locking the electrical plug connection of the AWS control module

Installation Location

Note. Only for USA/Canada version vehicles.

Note. Passenger's seat only.

Scheme 48

Scheme 48

1. Push electric connector -1- onto AWS control module until it is felt to engage. see scheme 44

Installation Location

Note. Only for vehicles with electrically adjustable seat

1. Push in electrical plug connection -1- -arrow A- until the locking tab audibly engages -arrow B-. see scheme 46

Installation Location

1. Join the plug connection -1- -Arrow A-, press in plug connector locking device -2- on the side -Arrow B-. see scheme 48

Installation Location

1. Push seat rail cover -1- into front end of the left and right seat rails -Arrow A- until the locking tab audibly engages -Arrow B-. see scheme 54

Subsequent work

WARNINGIncorrect information for AWS control module. Passenger's airbag is triggered differently.

> If the passenger's seat was removed and re-installed, the AWS control module must be calibrated.

> If the seat bracket was replaced, the AWS control module must be calibrated.

> If the AWS control module was replaced, the AWS control module must be calibrated.

Note. Only for USA/Canada version vehicles.

1. Calibrate the AWS control module. Refer to 69 68 K2 Calibrating AWS control unit - as of MY 2005 (All Models) .

Preliminary work

Remove control module trim panel (electric). > 721619 Removing and installing control module trim panel - section on "Removing"

Removing switch for air cushion

Installation Location

Scheme 49

Scheme 49: Removing switch for air cushion

Scheme 50

Scheme 50

1. Remove the two tie-wraps -2- on wire harness of switch for air cushion -1-. (Scheme 52)

2. Pull plug connection -3- out of holder -4- ( -arrow B- ). (Scheme 52)

3. Release plug connection -3- ( -arrow a- ) and disconnect it -arrows C-. (Scheme 52)

Scheme 51

Scheme 51: Installing switch for air cushion

1. Push plug connection -3- together -arrows A- until it engages securely. (Scheme 53)

2. Push plug connection -3- into holder -4- ( -arrow B- ). (Scheme 53)

3. Lay wire harness of switch for air cushion -1- and secure with two new tie-wraps -2-. (Scheme 53)

Scheme 52

Scheme 52: Installing control unit for memory seat adjustment with support

1. Attach the three connectors on the control unit for memory seat adjustment until they are felt to engage.

Scheme 53

Scheme 53

2. Position control unit for memory seat adjustment with support -2- on seat frame and secure with both fastening screws -1-. (Scheme 55)

Install control module trim panel (electric). > 721619 Removing and installing control module trim panel - section on "Installing"

1. Remove padding for front seat. Refer to 74 10 19 Removing and installing padding for front seat - as of MY 2005 (All Models) .

2. Remove belt lock. Refer to 69 24 19 Removing and installing front belt lock - as of MY 2005 (All Models) .

Note. Only for vehicles with adaptive sports seats.

3. Remove air cushion motor. > 723919 Removing and installing air cushion motor - section on "Removing"

Note. Only for vehicles with adaptive sports seats.

4. Remove air cushion control valve. > 723819 Removing and installing air cushion control valve - section on "Removing"

Note. Only for vehicles with adaptive sports seats.

5. Remove switch for air cushion. > 720619 Removing and installing air cushion switch - section on "Removing"

6. Remove wire harness for electrically adjustable seats. Refer to 97 57 19 Removing and installing wire harness for electrically adjustable seat - as of MY 2005 (All Models) .

Note. Only for USA/Canada version vehicles.

Note. Passenger's seat only.

7. Remove AWS control unit. Refer to 69 68 19 Removing and installing AWS control unit - as of MY 2005 (All Models) .

Note. Only for vehicles with adaptive sports seats.

8. Remove air cushion for seat. > 721419 Removing and installing air cushion for seat - section on "Removing"

Scheme 54

Scheme 54: Removing frame for seat surface

1. Press out retaining pins -1- at the left and right with a screwdriver. (Scheme 56)

2. Unscrew fastening screws -2-, pull frame for seat surface -3- downwards -arrow A- and remove outwards -arrow B- from the seat frame -4-. (Scheme 56)

Scheme 55

Scheme 55: Removing backrest frame

Note. Two persons are needed to remove and install the backrest frame.

1. Secure backrest frame -2- in upright position. (Scheme 57)

2. Unscrew fastening screws -1- on left and right and remove backrest frame -2- up out of the seat frame. (Scheme 57)

Installing backrest frame

WARNINGLoosen the safety-related threaded joint. Danger of injury if front seat is not screwed down correctly.

> Always replace fastening screws for the front seat after customer service and reworking.

> It is not permissible to make alterations to the micro-encapsulated screws (e. g., use lubricant, loosen bolts, and screw them down again).

Note. Two persons are needed to remove and install the backrest frame.

1. Fit backrest frame -2- into the seat frame, position it correctly and secure with the fastening screws -1-. Tightening torque --> Tightening torque: 34 (25 ftlb.) Nm +/-4 (3 ftlb.) Nm. see scheme 65

Scheme 56

Scheme 56: Installing frame for seat surface

1. Position frame for seat surface -3- on the seat frame -4- ( -arrow A- ), press it upwards -arrow B- and screw down the fastening screws -2-. see scheme 66

2. Press in new retaining pins -1- at the left and right. see scheme 66

Note. Only for vehicles with adaptive sports seats.

1. Install air cushion for seat. > 721419 Removing and installing air cushion for seat - section on "Installing"

2. Install wire harness for electrically adjustable seats. Refer to 97 57 19 Removing and installing wire harness for electrically adjustable seat - as of MY 2005 (All Models) .

Note. Only for USA/Canada version vehicles.

Note. Passenger's seat only.

3. Install AWS control unit. Refer to 69 68 K2 Calibrating AWS control unit - as of MY 2005 (All Models) .

Note. Only for vehicles with adaptive sports seats.

4. Install switch for air cushion. > 720619 Removing and installing air cushion switch - section on "Installing"

Note. Only for vehicles with adaptive sports seats.

5. Install air cushion control valve. > 723819 Removing and installing air cushion control valve - section on "Installing"

Note. Only for vehicles with adaptive sports seats.

6. Install air cushion motor. > 723819 Removing and installing air cushion motor - section on "Installing"

7. Install belt lock. Refer to 69 24 19 Removing and installing front belt lock - as of MY 2005 (All Models) .

8. Install padding for front seat. Refer to 74 10 19 Removing and installing padding for front seat - as of MY 2005 (All Models) .

1. Remove padding for front seat. Refer to 74 10 19 Removing and installing padding for front seat - as of MY 2005 (All Models) .

2. Remove belt lock. Refer to 69 24 19 Removing and installing front belt lock - as of MY 2005 (All Models) .

Note. Only for vehicles with adaptive sports seats.

3. Remove air cushion motor. > 723919 Removing and installing air cushion motor - section on "Removing"

Note. Only for vehicles with adaptive sports seats.

4. Remove air cushion control valve. > 723819 Removing and installing air cushion control valve - section on "Removing"

Note. Only for vehicles with adaptive sports seats.

5. Remove switch for air cushion. > 720619 Removing and installing air cushion switch - section on "Removing"

6. Remove wire harness for electrically adjustable seats. Refer to 97 57 19 Removing and installing wire harness for electrically adjustable seat - as of MY 2005 (All Models) .

Note. Only for USA/Canada version vehicles.

Note. Passenger's seat only.

7. Remove AWS control unit. Refer to 69 68 19 Removing and installing AWS control unit - as of MY 2005 (All Models) .

Note. Only for vehicles with adaptive sports seats.

8. Remove air cushion for seat. > 721419 Removing and installing air cushion for seat - section on "Removing"

Removing cover for AWS sensor on left and right

Note. Only for USA/Canada version vehicles.

Note. Passenger's seat only.

Scheme 57

Scheme 57: Removing cover for AWS sensor on left and right

1. Unscrew fastening screws -1- and remove cover for AWS sensor -2- in direction of arrow. see scheme 67

Removing frame for seat surface

1. Press out retaining pins -1- at the left and right with a screwdriver. (Scheme 58)

2. Unscrew fastening screws -2-, pull frame for seat surface -3- downwards -arrow A- and remove outwards -arrow B- from the seat frame -4-. (Scheme 58)

Removing backrest frame

Note. Two persons are needed to remove and install the backrest frame.

1. Secure backrest frame -2- in upright position. (Scheme 59)

2. Unscrew fastening screws -1- on left and right and remove backrest frame -2- up out of the seat frame. (Scheme 59)

WARNINGLoosen the safety-related threaded joint. Danger of injury if front seat is not screwed down correctly.

> Always replace fastening screws for the front seat after customer service and reworking.

> It is not permissible to make alterations to the micro-encapsulated screws (e. g., use lubricant, loosen bolts, and screw them down again).

Note. Two persons are needed to remove and install the backrest frame.

1. Fit backrest frame -2- into the seat frame, position it correctly and secure with the fastening screws -1-. Tightening torque --> Tightening torque: 34 (25 ftlb.) Nm +/-4 (3 ftlb.) Nm. (Scheme 60)

Installing frame for seat surface

1. Position frame for seat surface -3- on the seat frame -4- ( -arrow A- ), press it upwards -arrow B- and screw down the fastening screws -2-. (Scheme 61)

2. Press in new retaining pins -1- at the left and right. (Scheme 61)

Installing cover for AWS sensor on left and right

Note. Only for USA/Canada version vehicles.

Note. Passenger's seat only.

Scheme 58

Scheme 58: Installing cover for AWS sensor on left and right

1. Fit cover for AWS sensor -2- in direction of arrow and tighten hand-tight using the fastening screws -1-. (Scheme 62)

Note. Only for vehicles with adaptive sports seats.

1. Install air cushion for seat. > 721419 Removing and installing air cushion for seat - section on "Installing"

2. Install wire harness for electrically adjustable seats. Refer to 97 57 19 Removing and installing wire harness for electrically adjustable seat - as of MY 2005 (All Models) .

Note. Only for USA/Canada version vehicles.

Note. Passenger's seat only.

3. Install AWS control unit. Refer to 69 68 K2 Calibrating AWS control unit - as of MY 2005 (All Models) .

Note. Only for vehicles with adaptive sports seats.

4. Install switch for air cushion. > 720619 Removing and installing air cushion switch - section on "Installing"

Note. Only for vehicles with adaptive sports seats.

5. Install air cushion control valve. > 723819 Removing and installing air cushion control valve - section on "Installing"

Note. Only for vehicles with adaptive sports seats.

6. Install air cushion motor. > 723819 Removing and installing air cushion motor - section on "Installing"

7. Install belt lock. Refer to 69 24 19 Removing and installing front belt lock - as of MY 2005 (All Models) .

8. Install padding for front seat. Refer to 74 10 19 Removing and installing padding for front seat - as of MY 2005 (All Models) .

1. Remove padding for front seat. Refer to 74 10 19 Removing and installing padding for front seat - as of MY 2005 (All Models) .

Removing air cushion for seat

Installation Location

Scheme 59

Scheme 59: Removing air cushion for seat

Scheme 60

Scheme 60

1. Unscrew the two fastening screws -1- on the support -2-. (Scheme 64)

2. Set support -2- with connected motor and air cushion control valve aside. (Scheme 64)

Scheme 61

Scheme 61

3. Pull the white hose -1- off the air cushion control valve. (Scheme 65)

Scheme 62

Scheme 62

4. Fold the air cushion for the seat -1- aside -Arrow A- and unscrew the two fastening screws -2- on the air cushion support plate -3-. (Scheme 66)

5. Take air cushion support plate -3- off -Arrow B-. (Scheme 66)

Scheme 63

Scheme 63

6. Push the pins -2- of the two expanding clips -1- back ( -Arrow A- ) and remove the expanding clips -1- -Arrows B-. (Scheme 67)

7. Remove air cushion for seat ( -3- ). (Scheme 67)

Scheme 64

Scheme 64: Installing air cushion for seat

1. Position air cushion for seat -3- on the air cushion support plate -Arrow A-. (Scheme 68)

Note. The air cushion for the seat is fastened only with the rear air cushion on the air cushion support plate.

2. Secure the air cushion for the seat -3-. Use the two expanding clips -1- to fasten -Arrows B- it. To do this, the pins -2- must be forced into the expanding clips -1- by pressing (Scheme 68) -Arrow C-. (Scheme 68)

Scheme 65

Scheme 65

3. The air cushion support plate -3- must be fitted into the seat frame -4- by inserting -Arrow A- the guides into the seat frame. (Scheme 69)

4. Fasten the air cushion support plate -3- with the two fastening screws -2-. (Scheme 69)

5. The air cushion for the seat -1- must be folded over -Arrow B- and aligned with the air cushion support plate -3-. (Scheme 69)

Scheme 66

Scheme 66

6. Push the white hose -1- onto the air cushion control valve. (Scheme 70)

Scheme 67

Scheme 67

7. Position support -2- with connected motor and air cushion control valve and screw down with the two fastening screws -1-. (Scheme 71)

1. Install padding for front seat. Refer to 74 10 19 Removing and installing padding for front seat - as of MY 2005 (All Models) .

1. Remove front seat. > 720119 Removing and installing front seat - chapter on "Removing" [987120 987310 987320] > 720119 Removing and installing front seat - chapter on "Removing" [987121 987311 987321]

Removing control part trim panel

Installation Location

Scheme 68

Scheme 68: Removing control part trim panel

1. Unscrew front fastening screws 1 from the control part trim panel 2 .

Scheme 69

Scheme 69

2. Unscrew rear fastening screws 1 from the control part trim panel 2 .

Scheme 70

Scheme 70

3. Pull out control part trim panel 2 from the cushion in direction of arrow.

Scheme 71

Scheme 71

4. Disconnect electric plug connection 3 and 4 , unscrew fastening screws 5 from the tip switch 6 and take off the tip switch from the control part trim panel 2 .

Scheme 72

Scheme 72: Removing control part trim panel (with mechanical lever)

1. Press out trim panel 7 using a plastic spatula.

Scheme 73

Scheme 73

2. Unscrew fastening screw 8 from the lever 9 and remove lever.

3. Removing control part trim panel, work step 1, 2, 3

Scheme 74

Scheme 74

4. Disconnect electric plug connection 10 by pressing together the lugs arrow .

Scheme 75

Scheme 75: Installing control part trim panel

1. Position tip switch 6 on the control part trim panel 2 and screw down with the fastening screws 5 . Plug in electrical plug connection 3 and 4 .

Scheme 76

Scheme 76

2. Insert control part trim panel 2 into the cushion in direction of arrow.

Scheme 77

Scheme 77

3. Screw down rear control part trim panel 2 with the fastening screws 1 . --> Tightening torque: 2 ftlb.

Scheme 78

Scheme 78

4. Screw down front control part trim panel 2 with the fastening screws 1 . --> Tightening torque: 2 ftlb.

Scheme 79

Scheme 79: Installing control part trim panel (mechanical)

1. Connect electrical plug connection 10 .

2. Procedure: Installing control part trim panel, work step 2, 3, 4

Scheme 80

Scheme 80

3. Position lever 9 on seat, screw down fastening screw 8 . --> Tightening torque: 4.5 ftlb.

Scheme 81

Scheme 81

4. Press in trim panel.

1. Install front seat. > 720119 Removing and installing front seat - chapter on "Installing" [987120 987310 987320] > 720119 Removing and installing front seat - chapter on "Installing" [987121 987311 987321]

Tools

Designation Type Number Explanation test cable special tool P 9745 test cable special tool P 9745/1

Scheme 82

Scheme 82: Tools

1. Remove padding for front backrest. Refer to 74 17 19 Removing and installing padding for front backrest - as of MY 2005 (All Models) .

Note. Only necessary if you are removing the hose for the air cushion control valve!

2. Remove cover for left backrest. > 722619 Removing and installing cover for backrest - section on "Removing"

Removing air cushion for backrest

Installation Location

Scheme 83

Scheme 83: Removing air cushion for backrest

Scheme 84

Scheme 84

1. Remove the two tie-wraps -1-. (Scheme 88)

2. Pull off the two hoses for the air cushion for backrest -2- at the branch piece -3-. (Scheme 88)

Scheme 85

Scheme 85

3. Push out the pins -2- on the two expanding clips -1- ( -arrow A- ) and remove the expanding clips -1-. (Scheme 89)

4. Remove air cushion for backrest -3- ( -arrow C- ). (Scheme 89)

Scheme 86

Scheme 86

5. Pull air cushion for backrest -1- together with the hose out of the backrest frame. (Scheme 90)

Scheme 87

Scheme 87: Removing hose for air cushion control valve

1. Remove tie-wraps -2- and push hose -1- for air cushion control valve through in a downward direction -arrow A-. (Scheme 91)

2. Unclip the hose -1- at the holder -3- ( -arrow B- ). (Scheme 91)

Scheme 88

Scheme 88

3. Pull hose -1- off the air cushion control valve. (Scheme 92)

Scheme 89

Scheme 89: Installing hose for air cushion control valve

1. Push hose -1- onto the air cushion control valve. (Scheme 93)

Scheme 90

Scheme 90

2. Lay the hose -1- and clip it into the holder -3- ( -arrow A- ). (Scheme 94)

3. Pull the hose -1- through in an upward direction -arrow B- and secure with a new tie-wrap -2-. (Scheme 94)

Scheme 91

Scheme 91: Installing air cushion for backrest

1. Slide hose for the air cushion for backrest -1- into the backrest frame. (Scheme 95)

Scheme 92

Scheme 92

2. Position air cushion for backrest -3- ( -arrow A- ). (Scheme 96)

3. Secure the air cushion for backrest -3- with the two expanding clips -1- ( -arrows B- ). To do this, press the pins -2- into the expanding clips -1- ( (Scheme 96) -arrow C- ). (Scheme 96)

Scheme 93

Scheme 93

4. Slide the two hoses for the air cushion for backrest -2- onto the branch piece -3- and secure with two new tie-wraps -1-. (Scheme 97)

1. Install cover for left backrest. > 722619 Removing and installing cover for backrest - section on "Installing"

2. Install padding for front backrest. Refer to 74 17 19 Removing and installing padding for front backrest - as of MY 2005 (All Models) .

1. Remove cushion carrier for front backrest. > 722419 Removing and installing cushion carrier for front backrest - section on "Removing"

Note. Only for vehicles with lumbar support.

2. Remove control valve for lumbar support adjustment. > 723319 Removing and installing control valve for lumbar support adjustment - section on "Removing"

Note. Only for vehicles with lumbar support.

3. Remove lumbar support. > 723419 Removing and installing lumbar support - section on "Removing"

Note. Only for vehicles with lumbar support.

4. Remove motor for lumbar support. > 723619 Removing and installing motor for lumbar support - section on "Removing"

Note. Only for vehicles with adaptive sports seats.

5. Remove air cushion for backrest. > 721719 Removing and installing air cushion for backrest - section on "Removing"

Scheme 94

Scheme 94: Removing foam part

1. Remove foam part -1- at the headrest. (Scheme 98)

Scheme 95

Scheme 95: Removing supports for backrest side parts

1. Unscrew fastening screws -1- and remove support for right backrest side part -2-. (Scheme 99)

Scheme 96

Scheme 96

2. Unscrew fastening screws -1- and remove support for left backrest side part -2-. (Scheme 100)

Scheme 97

Scheme 97: Removing inner spring on backrest frame

1. Disengage tension springs -1- at left and right on inner spring -2- ( -arrows A- ). (Scheme 101)

2. Unclip inner spring -2- on backrest frame at the drive shaft -arrow B- and remove inner spring. (Scheme 101)

3. Disengage tension springs -1- on the backrest frame. (Scheme 101)

Scheme 98

Scheme 98: Disconnecting wire harnesses on backrest frame

Note. Only for vehicles with lumbar support. Make sure not to trap or damage the wire harness when pulling it through.

1. Pull wire harness for backrest -1- down out of the backrest frame -2-. (Scheme 102)

Scheme 99

Scheme 99

2. Turn plug connection -1- approx. 90° anti-clockwise -arrow A- and pull it off the backrest frame -arrow B-. see scheme 113

3. Release plug connection -arrows C- and disconnect it -arrows D-. see scheme 113

Note. Make sure not to trap or damage the wire harness when pulling it through.

4. Press locking tabs on fixing clip -2- together and unclip it -arrow E-. Pull wire harness for backrest -3- down and out -arrow F-. see scheme 113

5. Press locking tabs on fixing clip -2- together and unclip wire harness for side airbag -4- from the backrest frame -arrow G-. see scheme 113

Scheme 100

Scheme 100: Removing frame for side airbag

1. Unscrew fastening screws -1- and unclip frame for side airbag -2- from the backrest frame -3-. see scheme 114

Scheme 101

Scheme 101: Disassembling backrest frame

1. Remove fastening nuts -1- from the backrest frame -2-, check them and replace if necessary. see scheme 115

Scheme 102

Scheme 102

2. Unclip fixing clips -1- from the backrest frame -2-, check them and replace if necessary. see scheme 116

Note. Two persons are needed to remove and install the backrest frame.

1. Secure backrest frame -2- in upright position. (Scheme 103)

2. Unscrew fastening screws -1- on left and right and remove backrest frame -2- up out of the seat frame. (Scheme 103)

WARNINGLoosen the safety-related threaded joint. Danger of injury if front seat is not screwed down correctly.

> Always replace fastening screws for the front seat after customer service and reworking.

> It is not permissible to make alterations to the micro-encapsulated screws (e. g., use lubricant, loosen bolts, and screw them down again).

Note. Two persons are needed to remove and install the backrest frame.

1. Fit backrest frame -2- into the seat frame, position it correctly and secure with the fastening screws -1-. Tightening torque --> Tightening torque: 34 (25 ftlb.) Nm +/-4 (3 ftlb.) Nm. (Scheme 104)

Installing frame for side airbag

1. Clip frame for side airbag -2- to backrest frame -3- and secure with the fastening screws -1-. (Scheme 107)

Scheme 103

Scheme 103: Securing wire harnesses on backrest frame

Note. Only for vehicles with lumbar support. Make sure not to trap or damage the wire harness when pulling it through.

1. Pull wire harness for backrest -1- up into the backrest frame -2-. (Scheme 108)

Scheme 104

Scheme 104

2. Press fixing clip -2- on wire harness for side airbag onto the backrest frame -arrow A-. (Scheme 109)

Note. Make sure not to trap or damage the wire harness when pulling it through.

3. Pull wire harness for backrest -3- through -arrow B- and press in fixing clip -2- ( -arrow C- ). (Scheme 109)

4. Push plug connection -1- together -arrows D- until it engages securely. (Scheme 109)

5. Insert plug connection -1- into the backrest frame -arrow E- and turn it clockwise by approx. 90° -arrow F-. (Scheme 109)

Scheme 105

Scheme 105: Installing inner spring on backrest frame

1. Engage tension springs -1- in the backrest frame. (Scheme 110)

2. Clip in inner spring -2- on lower part of backrest frame at the drive shaft -arrow A-. (Scheme 110)

3. Engage tension springs -1- in the inner spring -2- on the backrest frame -arrow B-. (Scheme 110)

Scheme 106

Scheme 106: Installing supports for backrest side parts

Note. Observe hose routing! In vehicles with lumbar support, make sure the hoses are routed correctly in the area of the backrest side support.

1. Insert support for left backrest side part -2- and secure with the fastening screws -1-. (Scheme 111)

Scheme 107

Scheme 107

2. Route wire harness for side airbag -1- as shown behind the backrest side part support -2-. (Scheme 112)

Scheme 108

Scheme 108

Note. Observe hose routing! In vehicles with lumbar support, make sure the hoses are routed correctly in the area of the backrest side support.

3. Insert support for right backrest side part -2- and secure with the fastening screws -1-. (Scheme 113)

Scheme 109

Scheme 109: Fitting foam part

1. Fit foam part -1- to the headrest. (Scheme 114)

Note. Only for vehicles with adaptive sports seats.

1. Install air cushion for backrest. > 721719 Removing and installing air cushion for backrest - section on "Installing"

Note. Only for vehicles with lumbar support.

2. Install motor for lumbar support. > 723619 Removing and installing motor for lumbar support - section on "Installing"

Note. Only for vehicles with lumbar support.

3. Install lumbar support. > 723419 Removing and installing lumbar support - section on "Installing"

Note. Only for vehicles with lumbar support.

4. Install control valve for lumbar support adjustment. > 723319 Removing and installing control valve for lumbar adjustment - section on "Installing"

5. Install cushion carrier for front backrest. > 722419 Removing and installing cushion carrier for front backrest - section on "Installing"

Remove padding for backrest. Refer to 74 17 19 Removing and installing padding for front backrest - as of MY 2005 (All Models) .

1. Remove padding for front backrest. Refer to 74 17 19 Removing and installing padding for front backrest - as of MY 2005 (All Models) .

2. Remove side airbag. Refer to 69 63 19 Removing and installing side airbag - as of MY 2005 (All Models) .

3. Remove control button for backrest release. > 723119 Removing and installing control button for backrest adjustment - section on "Removing"

Scheme 110

Scheme 110: Removing cushion carrier for front backrest

1. Undo fastening screws -1, 2-. (Scheme 115)

Scheme 111

Scheme 111

2. Pull out frame for side airbag -2- slightly and unclip locking tabs from cushion carrier -1- using a screwdriver. (Scheme 116)

Scheme 112

Scheme 112

3. Release upper locking tabs in direction of arrow -Inset A-. (Scheme 117)

4. Press lower locking tabs together and unclip cushion carrier -1- ( -Inset B- ). (Scheme 117)

5. Press cushion carrier -1- outward slightly in area of backrest release and remove it. (Scheme 117)

Removing cushion carrier for front backrest

Installation Location

Scheme 113

Scheme 113: Removing cushion carrier for front backrest

Scheme 114

Scheme 114

1. Remove foam part of headrest -1-. (Scheme 119)

Scheme 115

Scheme 115

2. Insert a plastic wedge between the cushion carrier -1- and the collar -2- and unclip collar. see scheme 134

Scheme 116

Scheme 116

3. Undo fastening screws -1-. see scheme 135

Scheme 117

Scheme 117

4. Release upper locking tabs in direction of arrow -Inset A-. (Scheme 120)

5. Press lower locking tabs together and unclip cushion carrier -1- ( -Inset B- ). (Scheme 120)

6. Press cushion carrier -1- outward slightly close to the backrest release and remove it. (Scheme 120)

Scheme 118

Scheme 118: Installing cushion carrier for front backrest

1. Press cushion carrier -1- outward slightly in area of backrest release and position it on the backrest frame -2- until the locking tabs engage at the top -Inset A- and bottom -Inset B-. see scheme 137

Scheme 119

Scheme 119

2. Press cushion carrier -1- at the sides into the frame for the side airbag -2- until the locking tabs engage. (Scheme 121)

3. Tighten fastening screws -1, 2-. (Scheme 122)

Installing cushion carrier for front backrest

Installation Location

Scheme 120

Scheme 120

1. Press cushion carrier -1- outward slightly close to the backrest release and position it on the backrest frame -2- until the locking tabs engage at the top -Inset A- and bottom -Inset B-. (Scheme 124)

2. Tighten fastening screws -1-. (Scheme 125)

Scheme 121

Scheme 121

3. Position collar -2- on the cushion carrier -1- and press in until it clicks into place. (Scheme 126)

Scheme 122

Scheme 122

4. Fit foam part of headrest -1-. (Scheme 127)

Install padding for backrest. Refer to 74 17 19 Removing and installing padding for front backrest - as of MY 2005 (All Models) .

1. Install control button for backrest release. > 723119 Removing and installing control button for backrest adjustment - section on "Installing"

2. Install side airbag. Refer to 69 63 19 Removing and installing side airbag - as of MY 2005 (All Models) .

3. Install padding for front backrest. Refer to 74 17 19 Removing and installing padding for front backrest - as of MY 2005 (All Models) .

1. Remove cushion carrier for front backrest. > 722419 Removing and installing cushion carrier for front backrest - section on "Removing"

Removing bowden cable for backrest release

1. Release backrest and tilt forwards.

Scheme 123

Scheme 123: Removing bowden cable for backrest release

2. Swivel pin -2- of bowden cable -1- up by 90° -arrow A- and disengage it -arrow B-. (Scheme 128)

3. Press locking tab on fixing clip -3- outwards slightly and press fixing clip -3- down and out with a plastic hammer -arrow C-. (Scheme 128)

Scheme 124

Scheme 124

4. Swivel eye -2- of bowden cable -1- by 90° -arrow A- and pull it out of the locking lever. (Scheme 129)

5. Unclip fixing clip -3- from the backrest frame -1- ( -arrow B- ). (Scheme 129)

6. Pull bowden cable -1- up out of the backrest frame -arrows C-. (Scheme 129)

Scheme 125

Scheme 125: Removing backrest frame release

1. Disengage tension spring -1-. (Scheme 130)

2. Press retaining pins -2- out with a screwdriver and remove backrest frame release -3-. (Scheme 130)

3. Press out rubber stop -4-. (Scheme 130)

Scheme 126

Scheme 126: Installing backrest frame release

1. Press in rubber stop -4-. (Scheme 131)

2. Position backrest frame release -3- and secure with new retaining pins -2-. (Scheme 131)

3. Engage tension spring -1-. (Scheme 131)

Scheme 127

Scheme 127: Installing bowden cable for backrest release

1. Insert bowden cable -1- downwards into the backrest frame from above -Arrows A-. (Scheme 132)

2. Insert eye -2- of bowden cable -1- into the locking lever and swivel by 90° -Arrow B-. (Scheme 132)

3. Press fixing clip -3- with bowden cable into the backrest frame -Arrow C-. (Scheme 132)

Scheme 128

Scheme 128

4. Position fixing clip -3- on backrest frame and tap it upwards into place with a plastic hammer -Arrow A-. (Scheme 133)

5. Engage pin -2- of bowden cable -1- ( -Arrow B- ) and swivel downwards by 90° -Arrow C-. (Scheme 133)

1. Install cushion carrier for front backrest. > 722419 Removing and installing cushion carrier for front backrest - section on "Installing"

1. Remove front seat. > 720119 Removing and installing front seat - chapter on "Removing" [987120 987310 987320] > 720119 Removing and installing front seat - chapter on "Removing" [987121 987311 987321]

2. Remove control module trim panel. > 721619 Removing and installing control module trim panel - chapter on "Removing"

Removing cover for outer backrest

Installation Location

Scheme 129

Scheme 129: Removing cover for outer backrest

Scheme 130

Scheme 130

1. Unscrew fastening screw -1- laterally out of the cover -2-. (Scheme 135)

Scheme 131

Scheme 131

2. Unscrew lower fastening screw -1- out of the cover -2-. see scheme 153

Scheme 132

Scheme 132

3. Unclip cover -1- at the front -inset A- and remove by pulling backwards in direction of arrow -inset B-. see scheme 154

Scheme 133

Scheme 133: Installing cover for outer backrest

1. Insert cover -1- at the back in direction of arrow -inset A- and press into position at the front -inset B-. see scheme 155

Scheme 134

Scheme 134

2. Screw down the cover -2- from below with the fastening screw -1-. --> Tightening torque: 2.7 (1.8 ftlb.) Nm. see scheme 156

Scheme 135

Scheme 135

3. Screw down the cover -2- laterally with the fastening screw -1-. --> Tightening torque: 2.7 (1.8 ftlb.) Nm. see scheme 157

1. Install control module trim panel. > 721619 Removing and installing control module trim panel - chapter on "Installing"

2. Install front seat. > 720119 Removing and installing front seat - chapter on "Installing" [987120 987310 987320] > 720119 Removing and installing front seat - chapter on "Installing" [987121 987311 987321]

Designation Type Number Explanation test cable special tool P 9745 test cable special tool P 9745/1

1. Remove cushion carrier for front backrest. > 722419 Removing and installing cushion carrier for front backrest - section on "Removing"

Taking off foam part

Installation Location

Scheme 136

Scheme 136: Taking off foam part

1. Remove foam part -1- at the headrest. see scheme 167

Scheme 137

Scheme 137: Removing control valve for lumbar support adjustment

1. Release connector -1- on control valve for lumbar support adjustment -3- ( -arrow a- ) and pull it off -arrow B-. (Scheme 139)

2. Pull off the three hoses -2- on the control valve for lumbar support adjustment -3- ( -arrows C- ). (Scheme 139)

3. Unscrew fastening screw -4- and pull control valve for lumbar support adjustment -3- (with the clip -5- ) off the backrest frame -arrow D-. (Scheme 139)

Scheme 138

Scheme 138: Installing control valve for lumbar support adjustment

1. Push control valve for lumbar support adjustment -3- (with the clip -5- ) onto the backrest frame -arrow A- and screw down with the fastening screw -4-. --> Tightening torque: 4 (3 ftlb.) Nm. (Scheme 140)

Note. Observe the installation position of the hoses! Push on the blue hose onto the connection marked B and push on the red hose onto the connection marked R .

2. Push on the three hoses -2- onto the control valve for lumbar support adjustment -3- ( -arrows B- ). (Scheme 140)

3. Push connector -1- onto the control valve for lumbar support adjustment -3- ( -arrow C- ) until it engages securely. (Scheme 140)

Fitting foam part

Note. Observe the installation position of the hoses! Make sure that the hoses are not pinched. Insert hoses exactly into the cut-outs on the foam part.

1. Fit foam part -1- at the headrest. (Scheme 141)

Reworking

1. Install cushion carrier for front backrest. > 722419 Removing and installing cushion carrier for front backrest - section on "Installing"

Designation Type Number Explanation test cable special tool P 9745 test cable special tool P 9745/1

1. Remove cushion carrier for front backrest. > 722419 Removing and installing cushion carrier for front backrest - section on "Removing"

Installation Location

1. Remove foam part -1- at the headrest. (Scheme 143)

Removing lumbar support

Installation Location

Scheme 139

Scheme 139: Removing lumbar support

Scheme 140

Scheme 140

1. Pull off the red and blue hose -1- on the lumbar support control valve -2-. (Scheme 145)

Scheme 141

Scheme 141

2. Pull the red and blue hose -1- out of the backrest frame -2-. (Scheme 146)

Note. Only for seats with a memory function

Scheme 142

Scheme 142

3. Pull connectors off the lumbar support sensors.

3.1. Swivel lumbar support -1- upward -arrow A-. (Scheme 147)

3.2. Pull the two sensors -2- forward behind the backrest panel -arrows B-. (Scheme 147)

3.3. Release both connectors -3- at the sensors -2- ( -arrow a- ) and unplug them -arrow C-. (Scheme 147)

Scheme 143

Scheme 143

4. Remove the two tie-wraps -2- on the lumbar support -1-. see scheme 177

5. Remove lumbar support -1- together with the red and blue hose -3-. see scheme 177

Scheme 144

Scheme 144: Installing lumbar support

1. Install the lumbar support -1- together with the red and blue hose -3-. see scheme 178

2. Secure the lumbar support -1- to the grille using two new tie-wraps -2-. see scheme 178

Note. Only for seats with a memory function

Scheme 145

Scheme 145

3. Attach connectors to the lumbar support sensors.

Note. Observe installation position of connectors! Push red-lilac-brown connector onto the sensor at the top air cushion. Push red-white-brown connector onto the sensor at the bottom air cushion.

3.1. Connect the two connectors -3- to the sensors -2- ( -arrow A- ) until they engage securely. (Scheme 148)

3.2. Push the two sensors -2- behind the backrest panel -arrows B- and fold down the lumbar support -1- ( -arrow C- ). (Scheme 148)

Scheme 146

Scheme 146

4. Lay the red hose and the blue hose -1- on the backrest frame -2-. see scheme 180

Scheme 147

Scheme 147

Note. Observe the installation position of the hoses! Push on the blue hose onto the connection marked B and push on the red hose onto the connection marked R .

5. Slide the red and blue hose -1- onto the lumbar support control valve -2-. see scheme 181

6. Check the function of the lumbar support using the test cable.

Note. Observe the installation position of the hoses! Make sure that the hoses are not pinched. Insert hoses exactly into the cut-outs on the foam part.

1. Fit foam part -1- at the headrest. see scheme 182

1. Install cushion carrier for front backrest. > 722419 Removing and installing cushion carrier for front backrest - section on "Installing"

Designation Type Number Explanation test cable special tool P 9745 test cable special tool P 9745/1

1. Remove cushion carrier for front backrest. > 722419 Removing and installing cushion carrier for front backrest - section on "Removing"

Note. Only for vehicles with adaptive sports seats.

2. Remove left air cushion for backrest. > 721719 Removing and installing air cushion for backrest - section on "Removing"

Removing support for left backrest side part

Installation Location

Scheme 148

Scheme 148: Removing support for left backrest side part

1. Unscrew the four fastening screws -1- and remove support for backrest side part -2-. (Scheme 150)

Installation Location

1. Remove foam part -1- at the headrest. (Scheme 152)

Scheme 149

Scheme 149: Removing motor for lumbar support

1. Pull the white hose -1- off the control valve for lumbar support -2-. (Scheme 153)

Scheme 150

Scheme 150

2. Pull the white hose -1- out of the backrest frame -2-. (Scheme 154), (Scheme 153).

Scheme 151

Scheme 151

3. Release plug connection -1- ( -arrow a- ) and disconnect it -arrows B-. see scheme 189

4. Take motor for lumbar support -2- out of the backrest frame ( -arrow C- ) and pull the hose -3- along with the motor out of the backrest frame -arrow D-. see scheme 189

Scheme 152

Scheme 152: Installing motor for lumbar support

1. Push hose -3- into the backrest frame -arrow A- and insert motor for lumbar support -2- into the backrest frame -arrow B-. see scheme 190

2. Push plug connection -1- together -arrows C- until it engages securely. see scheme 190

Scheme 153

Scheme 153

3. Lay the white hose -1- on the backrest frame -2-. see scheme 191, (Scheme 155).

Scheme 154

Scheme 154

4. Push the white hose -1- onto the control valve for lumbar support -2-. (Scheme 155)

Note. Observe the installation position of the hoses! Make sure that the hoses are not pinched. Insert hoses exactly into the cut-outs on the foam part.

1. Fit foam part -1- at the headrest. see scheme 193

Installing support for left backrest side part

Note. Observe hose routing! In vehicles with lumbar support, make sure the hoses are routed correctly in the area of the backrest side support.

1. Insert support for backrest side part -2- and secure with the four fastening screws -1-. (Scheme 156)

2. Route wire harness for airbag -1- as shown behind the backrest side part support -2-. (Scheme 157)

1. Install right air cushion for backrest. > 721719 Removing and installing air cushion for backrest - section on "Installing"

2. Install cushion carrier for front backrest. > 722419 Removing and installing cushion carrier for front backrest - section on "Installing"

Remove front seat. > 720119 Removing and installing front seat - section on "Removing" [987120 987310 987320] > 720119 Removing and installing front seat - section on "Removing" [987121 987311 987321]

Removing air cushion control valve

Installation Location

Scheme 155

Scheme 155: Removing air cushion control valve

1. Unscrew the two fastening screws -1- on the support -2-. (Scheme 159)

2. Set support -2- with connected motor and air cushion control valve aside. (Scheme 159)

Scheme 156

Scheme 156

3. Release connector -1- on air cushion control valve -arrow a- and pull it off. see scheme 198

4. Pull off the three hoses -2- from the air cushion control valve. see scheme 198

Scheme 157

Scheme 157

5. Unscrew fastening screw -1- and remove air cushion control valve -2-. (Scheme 160)

Scheme 158

Scheme 158: Installing air cushion control valve

1. Position air cushion control valve -2- and tighten with the fastening screw -1-. see scheme 200

Scheme 159

Scheme 159

Note. Observe the installation position of the hoses! Push on the blue hose onto the connection marked B and push on the red hose onto the connection marked R .

2. Push on the three hoses -2- onto the air cushion control valve. (Scheme 161)

3. Push on connector -1- onto air cushion control valve until this engages audibly. (Scheme 161)

4. Position support -2- with connected motor and air cushion control valve and screw down with the two fastening screws -1-. (Scheme 162)

Install front seat. > 720119 Removing and installing front seat - section on "Installing" [987120 987310 987320] > 720119 Removing and installing front seat - section on "Installing" [987121 987311 987321]

Remove front seat. > 720119 Removing and installing front seat - section on "Removing" [987120 987310 987320] > 720119 Removing and installing front seat - section on "Removing" [987121 987311 987321]

Removing air cushion motor

Installation Location

Scheme 160

Scheme 160: Removing air cushion motor

1. Unscrew the two fastening screws -1- on the support -2-. see scheme 204

2. Set support -2- with connected motor and air cushion control valve aside. see scheme 204

Scheme 161

Scheme 161

3. Remove the two tie-wraps -1- on the air cushion motor -2-. see scheme 205

4. Release plug connection -3- -arrow a- and disconnect -arrows B-. see scheme 205

5. Pull off the white hose -4- from the air cushion control valve -arrow C- and remove the air cushion motor -2-. see scheme 205

Scheme 162

Scheme 162: Installing air cushion motor

1. Position air cushion motor -2- and push on the white hose -4- onto the air cushion control valve -arrow A-. see scheme 206

2. Push the plug connection -3- together -arrows B- until it is felt to engage. see scheme 206

Note. Observe hose routing! Ensure that no hoses are disconnected by the tie-wraps.

3. Secure air cushion motor -2- onto support using two new tie-wraps -1-. see scheme 206

4. Position support -2- with connected motor and air cushion control valve and screw down with the two fastening screws -1-. see scheme 207

Install front seat. > 720119 Removing and installing front seat - section on "Installing" [987120 987310 987320] > 720119 Removing and installing front seat - section on "Installing" [987121 987311 987321]

Remove control module trim panel (electric). > 721619 Removing and installing control module trim panel - section on "Removing"

Install control module trim panel (electric). > 721619 Removing and installing control module trim panel - section on "Installing"

Remove front seat. > 720119 Removing and installing front seat - section on "Removing" [987120 987310 987320] > 720119 Removing and installing front seat - section on "Removing" [987121 987311 987321]

Install front seat. > 720119 Removing and installing front seat - section on "Installing" [987120 987310 987320] > 720119 Removing and installing front seat - section on "Installing" [987121 987311 987321]

Remove front seat. > 720119 Removing and installing front seat - section on "Removing" [987120 987310 987320] > 720119 Removing and installing front seat - section on "Removing" [987121 987311 987321]

Install front seat. > 720119 Removing and installing front seat - section on "Installing" [987120 987310 987320] > 720119 Removing and installing front seat - section on "Installing" [987121 987311 987321]

Designation Type Number Explanation test cable special tool P 9745 test cable special tool P 9745/1

1. Remove cushion carrier for front backrest. > 722419 Removing and installing cushion carrier for front backrest - section on "Removing"

Note. Only for vehicles with adaptive sports seats.

2. Remove right air cushion for backrest. > 721719 Removing and installing air cushion for backrest - section on "Removing"

Removing backrest side support

Installation Location

Scheme 163

Scheme 163: Removing backrest side support

1. Unscrew the four fastening screws -1- and remove backrest side support -2-. (Scheme 168)

Scheme 164

Scheme 164: Removing motor for backrest adjustment

1. Unclip inner spring for backrest frame -1- at the drive shaft -2- ( -arrows B- ) and swivel it upwards ( -arrow C- ). (Scheme 169)

2. Turn plug connection -3- approx. 90° anti-clockwise -arrow D- and remove it from the backrest frame -arrow E-. (Scheme 169)

3. Release plug connection -3- ( -arrows a- ) and disconnect it -arrows F-. (Scheme 169)

Scheme 165

Scheme 165

4. Unscrew the two fastening screws -1- and remove motor for backrest adjustment -2-. see scheme 235

Scheme 166

Scheme 166

5. Pull drive shaft -1- out of the gear mount -2- and check for damage. see scheme 236

Scheme 167

Scheme 167: Installing motor for backrest adjustment

1. Insert the drive shaft -1- into the gear mount -2- by twisting slightly. see scheme 237

Scheme 168

Scheme 168

2. Push motor for backrest adjustment -2- onto the drive shaft by twisting slightly and secure with the two fastening screws -1-. see scheme 238

Scheme 169

Scheme 169

3. Push plug connection -3- together -arrows A- until it engages securely. see scheme 239

4. Insert plug connection -3- into the backrest frame -arrow B- and turn approx. 90° clockwise -arrow C-. see scheme 239

5. Swivel inner spring for backrest frame -1- downwards -arrow D- and clip in at the drive shaft -2- ( -arrows E- ). see scheme 239

Installing backrest side support

Note. Observe hose routing! In vehicles with lumbar support, make sure the hoses are routed correctly in the area of the backrest side support.

1. Fit backrest side support -2- and screw down with the four fastening screws -1-. (Scheme 170)

1. Install right air cushion for backrest. > 721719 Removing and installing air cushion for backrest - section on "Installing"

2. Install cushion carrier for front backrest. > 722419 Removing and installing cushion carrier for front backrest - section on "Installing"

Remove front seat. > 720119 Removing and installing front seat - section on "Removing" [987120 987310 987320] > 720119 Removing and installing front seat - section on "Removing" [987121 987311 987321]

Install front seat. > 720119 Removing and installing front seat - section on "Installing" [987120 987310 987320] > 720119 Removing and installing front seat - section on "Installing" [987121 987311 987321]

Designation Type Number Explanation PIWIS Tester special tool P 9718

Scheme 170

Scheme 170: Tools

Reading out and printing out values

WARNINGSudden voltage interruption of the power supply to the control module. Destruction of the control module.

> During programming, it is essential to guarantee the power supply for the Porsche System tester. It is essential to connect a battery charger with a current rating of at least 40 A to the vehicle battery.

> Prior to disconnecting the control module, switch off the ignition and remove the ignition key.

Note. Follow the instructions on the Tester. Later versions of the software may display slightly different text or require a slightly different procedure. The instructions you receive from the tester itself take precedence over this description.

1. Connect the Porsche System Tester to the vehicle and start the System Tester. Switch on the ignition. >> Continue.

2. Select the vehicle type .

3. Move from vehicle type to the list of control units and press >>.

4. Select the relevant control unit using the cursor keys and press >>.

5. Select Control unit replacement with the cursor keys and press the >> key.

6. Select Read out values (codings) with the cursor keys and press the >> key.

7. The message Codes successfully read out appears on the screen of the Porsche System Tester. Press >>.

8. Switch off ignition and replace control unit.

9. Switch on ignition. Select the vehicle type, choose the Special functions menu, start Vehicle handover and follow the instructions on the Tester.

10. Erase All fault memories .

11. Using the >> key, move from the vehicle type to the list of control units. Perform the automatic control unit search.

12. After replacing the control unit, the data that was previously read out (see Item 6) is reloaded under the Write in data menu. Press >>.

13. The System Tester displays the message Coding write-in complete . Press >>.

14. Go to the Coding menu by pressing >>, compare the coding with the vehicle equipment and code it if necessary.

15. Check the operation of the memory switch, read out the fault memory and erase it if necessary.

Programming control unit

WARNINGSudden voltage interruption of the power supply to the control module. Destruction of the control module.

> During programming, it is essential to guarantee the power supply for the Porsche System tester. It is essential to connect a battery charger with a current rating of at least 40 A to the vehicle battery.

> Prior to disconnecting the control module, switch off the ignition and remove the ignition key.

Note. Follow the instructions on the Tester. Later versions of the software may display slightly different text or require a slightly different procedure. The instructions you receive from the tester itself take precedence over this description.

1. Connect the Porsche System Tester to the vehicle and start the System Tester. Switch on the ignition. >> Continue.

Note. If the control unit values cannot be read out, proceed according to the instructions given here.

2. Select the vehicle type, choose the Special functions menu, start Vehicle handover and follow the instructions on the Tester.

3. Erase All fault memories .

4. Using the >> key, move from the vehicle type to the list of control modules. Perform the automatic control module search.

5. Use the cursor keys to select the Memory seat adjustment control unit and press >>.

6. Select Coding using the cursor keys and press >>.

7. Select the coding required for the vehicle and follow the instructions on the Tester.

8. Check the operation of the memory switch, read out the fault memory and erase it if necessary.