Restraints - Repair - e90 BMW M3 E90

64 00 000 Information on using cleaning agent/paints (personal protection equipment)

First Aid

1. If product comes in contact with eyes, immediately flush with running water for about 10 - 15 minutes. Seek the advice of eye specialist.
2. In the event of skin contact and where applicable an allergic skin reaction, clean the affected areas immediately with soap and water and then apply silicone-free skin cream. Seek advice of physician.
3. If an adhesive product is swallowed, rinse mouth/parts of mouth thoroughly with running water. Drink 1-2 glasses of water. Do not induce vomiting. Consult a doctor.
4. After inhaling vapors ensure ample supply of fresh air. Keep calm, keep respiratory tracks clear and call doctor.

Recycling

Dispose of cleaning agents/paints in a professional manner!

Observe national/country-specific disposal regulations.

Scheme 64

Safety precautions and general information

Overview of sensors for airbag system

72 12... Procedure after airbag triggering as result of an accident

Check and/or replace following components after airbag triggering

Satellites (control unit + sensor)

1. Components Satellite, A-/B-pillar, left/right Satellite, front door Satellite, rear seat Satellite, driver's/front passenger seat Satellite, vehicle center
2. Procedure Inspect visually for mechanical damage Read fault memory Disconnect battery and observe waiting period Rectify faults Connect battery and observe waiting period (at least 10 seconds) Delete fault memory Turn off ignition and wait at least 2 minutes (no consumers may be switched on during this period such as e.g. inside lights, radio, etc.) Switch on ignition (wait at least 10 seconds) Clear fault memory and if necessary rectify faults

Cables and plugs

1. Components and procedure Check cables and plugs for damage, replace if necessary. (e. g. corrosion, correct engagement, bent pin)

Belt system

1. Components Retractor mechanism Belt buckle tensioner Seatbelt height adjustment Anchor fitting tensioner
2. Procedure Check components, replace if necessary

Seats

1. Components Seat Airbag module Active head restraint
2. Procedure Check seats (function check of seat mechanism), replace if necessary Check seat screw/bolt connections Replace gas generator, active head restraint system If the severity of the impact has not caused any other damage to the seat, only the triggered gas generator needs to be replaced. External feature: The triggered head restraint is folded forwards and engaged. The repair work can be carried out in the car with the rear panel removed. The entire system can be pushed back into its original position and the new gas generator installed. The gas generator can be replaced up to 5 times. Replace airbag module and, if necessary, seat cover with padding

Driver's airbag

1. Components Airbag module Steering Wheel Steering column (if damaged)
2. Procedure Replace faulty components Replace steering wheel

Front-passenger airbag

1. Components Airbag module Trim, instrument panel Supporting tube (if damaged)
2. Procedure Check components; replace if necessary

Side airbag, front/rear

1. Components Airbag module Door panel Door in white Seat
2. Procedure Check components; replace if necessary

Head airbag

1. Components Airbag module Trim, A-pillar Roofliner Trim, B-pillar (if damaged) Trim, C-pillar (if damaged) Connection/mounting (on side frame)
2. Procedure Check components; replace if necessary

Knee airbag

1. Components Panel (driver's side) Lower section of glovebox Active knee protector (driver's and passenger sides)
2. Procedure Replace faulty components

Passive knee protector

1. Components Trim panels (driver's side) Glovebox incl. knee protector (passenger side)
2. Procedure Replace faulty components Check fastening elements

72 Safety precautions and general information

Notes on safety

1. «SAFETY REGULATIONS»(/bmw/m3/e90-2007-2013/remont/airbag/#restraints-repair-e90__72-00-safety-regulations-for-handling) for handling airbag modules, airbag components and pyrotechnical seat belt tensioners
2. «NOTES ON SCRAPPING»(/bmw/m3/e90-2007-2013/remont/airbag/#restraints-repair-e90__72-12-notes-on-scrapping-vehicles) vehicles with gas generators
3. «DEACTIVATION/ACTIVATION PYROTECHNICAL COMPONENTS»(/bmw/m3/e90-2007-2013/remont/airbag/#restraints-repair-e90__72-12-deactivating-front-passenger-airbags)

Handling electrical and electronic equipment

1. «UNLOCKING/LOCKING AIRBAG PLUG CONNECTIONS»(/bmw/m3/e90-2007-2013/remont/airbag/#restraints-repair-e90__72-12-unlockinglocking-airbag-plug-connections)
2. «REPAIRING AIRBAG LINES»(/bmw/m3/e90-2007-2013/remont/airbag/#restraints-repair-e90__61-00-repairing-airbag-cables)
3. «HANDLING OPTICAL FIBRES»(/bmw/m3/e90-2007-2013/remont/door-locks-anti-theft-systems/#general-electrical-system-repair-e90__61-00-notes-on-handling-optical)

Check

1. «CHECK SEAT BELT»(/bmw/m3/e90-2007-2013/remont/airbag/#restraints-repair-e90__72-11-checking-automatic-safety-belt)
2. «CHECK LIST FOR SEAT BELT»(/bmw/m3/e90-2007-2013/remont/airbag/#restraints-repair-e90__72-11-inspection-list-for-automatic)

Airbag system

1. Functional description and checking, refer to Diagnosis system
2. «DEACTIVATING AIRBAGS»(/bmw/m3/e90-2007-2013/remont/airbag/#restraints-repair-e90__72-12-deactivating-front-passenger-airbags)
3. «PROCEDURE AFTER AIRBAG DEPLOYMENT»(/bmw/m3/e90-2007-2013/remont/manual-power-steering/#steering-and-wheel-alignment-repair-e90__72-12-procedure-after-airbag-triggering) .

72 00... Safety regulations for handling components with gas generators

It is essential to comply with the regulations as specified in the law relating to the use of explosives when working on airbag units and seat belt tensioners.

Airbags, seat belt tensioners etc. are pyrotechnical objects. Pyrotechnical objects are assigned to different danger classes on the basis of the quantity of propellant that they contain. The assignment can be ascertained from the identification marking on the product

This applies in particular to the following components

1. Airbag modules (driver's/front passenger airbags, side airbags)
2. Buckle/belt tensioner
3. Head airbag
4. Active knee protection
5. Active head restraint
6. Safety battery terminal

1. Regulations

The regulations quoted in the following refer to the Federal Republic of Germany.

In all other countries, the relevant legislation and regulations must be observed in each case. Country-specific legal regulations that go beyond this information or court decisions based thereon must be followed in each case or given precedence over these regulations.

The following components used by BMW

1. Pyrotechnical restraint systems are subject to danger class PT1
2. Gas generators are pyrotechnical objects belonging to danger class T1.

Handling, transporting and storing non-fired gas generators are subject to the "Explosive Materials Act" (law relating to the use of explosives dated 13/09/1976).

The relevant trade supervisory authority must be notified at least 2 weeks before pyrotechnical objects are handled for the first time. Here the relevant authority must be notified in writing of the person responsible (e.g. dealership owner, holder of general power of attorney or if necessary workshop supervisor). A certificate of qualification, i.e. specific training, is not required for the person responsible.

2. Disassembly and assembly

1. Inspection, testing and installation work may only be carried out by expert trained personnel in BMW Service.
2. Work on components of the airbag system should only ever be carried out with the battery disconnected, the negative terminal post covered and the plug connection of the cable leading to the gas generator disconnected. If only the battery is disconnected, the following prescribed waiting period must be observed without fail: 30 minutes for vehicles up to 9/93; 1 minute for vehicles from 9/93
3. In the event of breaks in work, a component with a gas generator that has been removed must be secured against access by other persons.
4. Individual components must never be repaired. Instead, always replace them.
5. Do not treat airbag system components with cleaning agents or grease.
6. Components of the airbag system must not be exposed to temperatures in excess of 75°C.
7. Airbag system components, including electronic diagnostic components, which have been dropped from heights in excess of 0.5 m must not be reinstalled in the vehicles.
8. Before installing, subject components such as housing, connector pins etc. (including electronic diagnostic components) to a visual inspection for damage and replace if necessary.
9. Airbag system components may only be electrically tested while they are installed and only with the BMW ISTA.
10. Danger of injury: The airbag module may only be set down with the airbag itself facing upwards . Otherwise the generator will be thrown upwards if it is fired.
11. Do not point the firing pellet of a gas generator at other persons.
12. Components with gas generators must not be fired while they are removed. They must be disposed of by special disposal companies or returned to BMW in the packaging of the new components.
13. When carrying out straightening and welding work with an electric welder: Disconnect battery Cover negative terminal (post)
14. Avoid all contact with the skin when removing a fired airbag module - wear gloves. Wash with water after contact with the skin.

3. Transport

1. Components with gas generators must be sent off in the packaging of the new components.

4. Storage

1. Observe the regulations of the relevant trade supervisory authority and the applicable national regulations.

72 11... Checking automatic safety belt

General considerations when checking seat belts

The seat belts must be checked after an accident.

For the check, you should start by trying to get information on which seats in the car involved in the accident were occupied. If this is not possible, check all the seat belts in the car and replace them if necessary.

In the event of deformations on the car, you must subject the components of the restraint system affected in this area such as e.g.

1. Seat Belts
2. Anchor fitting tensioner
3. Seatbelt height adjustment
4. Belt buckle tensioner
5. Triggering sensors
6. etc.

to a function check and a visual inspection.

If you are in any doubt as to the unimpaired functional capability of restraint system components, these components must be replaced in the interests of safety!

If a seat belt has to be replaced following an accident (e.g. in the event of a frontal and/or side impact with permanently deformed impact dampers/deformation elements or cross-members), the complete seat belt must be replaced! The complete seat belt comprises

1. Top belt
2. Lower strap
3. Anchor fitting tensioner
4. Seat belt buckle (buckle tensioner)
5. Seatbelt height adjustment
6. Retaining screws of all components

The following must also be checked and if necessary replaced

1. Seatbelt mountings on the car body
2. Seatbelt mountings on the seat
3. Seat runners
4. Seat structure (frame, etc.)

Alignment tests on the seat and the seat runners are not permitted!

The following explanations and the CHECKLIST for the automatic safety belt can provide help.

An unusable seat belt or a seat belt worn in a serious accident should be destroyed immediately after removal to guarantee that it can not be used again.

Checking automatic reel and seat belt strap

The automatic reel has two independent activation systems for seat-belt locking.

The first activation system locks the automatic reel when driving quickly around curves, driving in tight curves, on extreme inclinations (vehicle rolls over) and during sharp braking or impact.

To check, the seat backrest must be placed in the upright position and both hands held in a supporting position close to the steering wheel. The brakes are then applied fully while driving on a dry surface and at a road speed equal to twice that of walking speed.

The seat belt must lock.

The second activation system provides additional safety and is controlled by inertia mass.

If the reel locks when the strap is pulled out suddenly, this system is also OK.

In addition, the automatic electric reel (EMA) must eliminate belt slack.

Check whether an attempt was made to eliminate belt slack

1. Enter, close doors and latch seat belt buckle contact
2. EMA eliminates belt slack

If belt slack was not eliminated, the procedure described below must be followed

1. Allow vehicle to assume complete sleep mode and repeat the function test.
2. All doors must be closed!
3. EMA, left, must be installed and connected correctly.
4. Work through all fault memory entries before the function test is carried out again.

Replace defective or actuated automatic electric reels.

Automatic reel does not require servicing and must not be opened.

Precondition for complete, problem-free retraction of straps

1. the straps must not be twisted!
2. the straps must not be damaged!

When placed to one side, the straps of the front seats must retract fully.

With the straps in the rear seat bench, a small remaining loop is acceptable due to increased friction between the strap and the rear seat bench cover if

1. this remaining loop is fully retracted when the strap is reguided.

Belt straps should only be cleaned with a lukewarm soap solution or a commercial laundry detergent.

Belt straps must never be cleaned chemically or dyed.

The automatic reel and strap must be replaced in the event of

1. creases
2. unraveling
3. pinches
4. cracks and tears
5. traces of melting
6. traces of wear on casing of seat belt tongue or on reversing clip.

Checking lower strap (belt buckle tensioner)

To fasten a seat belt, the tongue should insert easily and with a loud click in the lock.

When the "Red button" is pressed, the tongue must be ejected from the lock under spring pressure.

If the lock cover is missing or damaged, the lower strap must be replaced.

Replace the triggered belt buckle tensioner including the complete seat belt with seatbelt height adjustment and retaining screws and check the

1. Seatbelt mountings on the car body
2. Seatbelt mountings on the seat
3. Seat runners
4. Seat structure

Criteria for a triggered mechanical belt buckle tensioner

1. very low position of seatbelt buckle (comparisons with new part).

Criteria for a triggered pyrotechnical belt buckle tensioner

1. very low position of seatbelt buckle (comparisons with new part).
2. Airbag warning lamp permanently lit: read out airbag system fault memory.

The belt buckle tensioners can be triggered under certain circumstances even when the seat is not occupied. If it is definite that the belt system was not used (seat was not occupied), there is no need to replace the after a check.

1. upper strap
2. attachment parts (belt height adjustment, screws)
3. seatbelt mountings on the car body
4. Seatbelt mountings on the seat
5. Seat runners

Checking anchor fitting tensioner

Replace the triggered anchor fitting tensioner including the complete seat belt with seatbelt height adjustment, lower strap and retaining screws and check the

1. Seatbelt mountings on the car body
2. Seatbelt mountings on the seat
3. Seat runners
4. Seat structure

Criteria for a triggered anchor fitting tensioner

1. A triggered anchor fitting tensioner can be recognized from the wrapped belt strap around the shaft.
2. Airbag warning lamp permanently lit: read out airbag system fault memory.

72 11... Inspection list for automatic seat belt

Scheme 65

Safety precautions and general information

Overview of sensors for airbag system

72 11 041 Removing and installing or replacing front left or right lower belt fitting (seat belt pretensioner)

Necessary preliminary tasks

1. Remove «FRONT SEAT»(/bmw/m3/e90-2007-2013/remont/seats/#seats-repair-e90__52-13-000-removing-and-installing)

Switch off ignition!

Installation

1. Microencapsulated screws (Loctite) must be replaced and may not be reused
2. Screw connection must be completed within 20 minutes (start of curing)
3. Microencapsulated screws must not be retightened
4. Clean thread of nut beforehand in event of repeated use

Unfasten plug connection (1) and disconnect.

Unlock plug connection (3) and pull all plugs out of plug housing (2).

Disconnect all cable ties.

Removing wiring harness.

Installation

1. Replace cable tie.
2. Wires must not be under tension
3. Plugs are coded and must be reinstalled in the correct sequence in the plug housing

Scheme 66

Only in event of replacement for E87 with build date before 09/2004

New seat belt tensioners are supplied with seat belt buckle contacts which are not required before this build date.

1. Disconnect contacts at pin 14 and pin 15
2. Tie both contacts to rear

Note. Clear all fault memories and code car again.

Scheme 67

Release screw (1).

Tightening torque: 72 11 6AZ .

Remove belt pretensioner (3).

Installation

Replace screw (1).

Belt tensioner (3) is secured through recess (2) to retaining bracket.

Scheme 68

72 11 098 Removing and installing/replacing all rear lower belt fittings

Necessary preliminary tasks

1. Remove rear seat . See «5226005 REMOVING AND INSTALLING/REPLACING REAR SEAT (THROUGH-LOADING)»(/bmw/m3/e90-2007-2013/remont/seats/#seats-repair-e90__52-26-005-removing-and-installingreplacing) or «5224005 REMOVING AND INSTALLING OR REPLACING REAR SEAT»(/bmw/m3/e90-2007-2013/remont/seats/#seats-repair-e90__52-24-005-removing-and-installing)

Illustration show removal of the left lower belt fitting; proceed in the same way for the right fitting.

Release screw (1).

Tightening torque 72 11 23AZ .

Remove lower belt fitting (2).

Installation

Pin (3) determines the installation position and prevents the lower belt fitting (2) from turning.

Note. Middle lower belt fitting (4) can only be removed in conjunction with right lower belt fitting.

Scheme 69

Lower belt fitting with belt tensioner

Illustration show removal of the left lower belt fitting; proceed in the same way for the right fitting.

Unfasten PLUG CONNECTION (2) and disconnect.

Release screw (1).

Tightening torque 72 11 23AZ .

Remove lower belt fitting (3).

Installation

Pin (4) determines the installation position and prevents the lower belt fitting (3) from turning.

Note. Middle lower belt fitting (5) can only be removed in conjunction with right lower belt fitting.

Scheme 70

72 11 033 Removing and installing/replacing front left or right seat belt

Necessary preliminary work

1. Remove panel for door post See «5143150 REMOVING AND INSTALLING OR REPLACING TRIM FOR LEFT OR RIGHT DOOR PILLAR (BOTTOM)»(/bmw/m3/e90-2007-2013/remont/door-locks-anti-theft-systems/#body-equipment-repair-e90__51-43-150-removing-and-installing) ; «5143148 REMOVING AND INSTALLING OR REPLACING TRIM ON LEFT OR RIGHT DOOR PILLAR (TOP)»(/bmw/m3/e90-2007-2013/remont/door-locks-anti-theft-systems/#body-equipment-repair-e90__51-43-148-removing-and-installing) or «5143148 REMOVING AND INSTALLING OR REPLACING TRIM ON LEFT OR RIGHT DOOR PILLAR (TOP)»(/bmw/m3/e90-2007-2013/remont/door-locks-anti-theft-systems/#body-equipment-repair-e90__51-43-148-removing-and-installing) .

Move backrest to full rearward position.

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

Scheme 71

Release screw (1).

Tightening torque: 72 11 2AZ .

Remove anchor fitting (2).

Installation note

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

Scheme 72

Release screws (1).

Tightening torque: 72 11 4AZ .

Remove deflector bar (2).

Release screw (3).

Tightening torque: 72 11 3AZ .

Set down belt deflector with belt (4).

Scheme 73

Release screw (1).

Tightening torque: 72 11 1AZ .

Remove automatic reel (3).

Installation note

Coding (2) of automatic reel must be seated in body opening.

Scheme 74

Installation note

Free spaces of (A) and (B) from the seat belt strap to the guide funnel must be of the same size.

Scheme 75

72 11 101 Removing and installing/replacing rear center seat belt

Necessary preliminary tasks

1. Remove «REAR SEAT»(/bmw/m3/e90-2007-2013/remont/seats/#seats-repair-e90__52-24-005-removing-and-installing)
2. Remove «REAR WINDOW SHELF»(/bmw/m3/e90-2007-2013/remont/door-locks-anti-theft-systems/#body-equipment-repair-e90__51-46-001-removing-and-installing)

Unscrew nut (1).

Tightening torque 72 11 20AZ .

Remove inertia reel unit (2).

Installation

Pay attention to coding.

Scheme 76

Release screw (2) on middle seat belt anchor fitting.

Tightening torque 72 11 22AZ .

Installation

Pin (3) determines the installation position and prevents the anchor fitting (1) from turning.

Scheme 77

72 11 092 Removing and installing/replacing rear left or right seat belts

Necessary preliminary tasks

1. Remove «REAR WINDOW SHELF»(/bmw/m3/e90-2007-2013/remont/door-locks-anti-theft-systems/#body-equipment-repair-e90__51-46-001-removing-and-installing)
2. Remove «REAR SEAT»(/bmw/m3/e90-2007-2013/remont/seats/#seats-repair-e90__52-24-005-removing-and-installing)

Removing left or right inertia reel unit

Release screw (1) on inertia reel unit (2).

Tightening torque 72 11 20AZ .

Remove inertia reel unit (2).

Scheme 78

Installation

Pay attention to coding.

Push inertia reel unit (1) onto body lug (2).

Scheme 79

Release screw (2).

Tightening torques 72 11 22AZ .

Remove seat belt (1).

Installation

Pin (3) determines the installation position and prevents the anchor fitting from turning.

Scheme 80

Notes on safety

1. «SAFETY REGULATIONS»(/bmw/m3/e90-2007-2013/remont/airbag/#restraints-repair-e90) for handling airbag modules, airbag components and pyrotechnical seat belt tensioners
2. «NOTES ON SCRAPPING»(/bmw/m3/e90-2007-2013/remont/airbag/#restraints-repair-e90__72-12-notes-on-scrapping-vehicles) vehicles with gas generators
3. «DEACTIVATION/ACTIVATION PYROTECHNICAL COMPONENTS»(/bmw/m3/e90-2007-2013/remont/airbag/#restraints-repair-e90__72-12-deactivating-front-passenger-airbags)

Handling electrical and electronic equipment

1. «UNLOCKING/LOCKING AIRBAG PLUG CONNECTIONS»(/bmw/m3/e90-2007-2013/remont/airbag/#restraints-repair-e90__72-12-unlockinglocking-airbag-plug-connections)
2. «REPAIRING AIRBAG LINES»(/bmw/m3/e90-2007-2013/remont/door-locks-anti-theft-systems/#general-electrical-system-repair-e90__61-00-repairing-airbag-cables)
3. «HANDLING OPTICAL FIBRES»(/bmw/m3/e90-2007-2013/remont/door-locks-anti-theft-systems/#general-electrical-system-repair-e90__61-00-notes-on-handling-optical)

Check

1. «CHECK SEAT BELT»(/bmw/m3/e90-2007-2013/remont/airbag/#restraints-repair-e90__72-11-checking-automatic-safety-belt)
2. «CHECK LIST FOR SEAT BELT»(/bmw/m3/e90-2007-2013/remont/airbag/#restraints-repair-e90__72-11-inspection-list-for-automatic)

Airbag system

1. Functional description and checking, refer to Diagnosis system
2. «DEACTIVATING AIRBAGS»(/bmw/m3/e90-2007-2013/remont/airbag/#restraints-repair-e90__72-12-deactivating-front-passenger-airbags)
3. «PROCEDURE AFTER AIRBAG DEPLOYMENT»(/bmw/m3/e90-2007-2013/remont/manual-power-steering/#steering-and-wheel-alignment-repair-e90__72-12-procedure-after-airbag-triggering) .

72 12... Deactivating front passenger airbags with key-operated switch

The passenger airbag can only be deactivated in accordance with the following instructions if the vehicle is equipped with a suitable key-operated switch!

The key-operated switch can be retrofitted if it is missing and has been ordered as an optional extra.

Key-operated switch

1. Optional extra SA 5DA for MINI
2. Optional extra SA 470 for BMW

E83 up to 09/2004 only

see Deactivation of airbags

E83 from 09/2004 only

Deactivation via key-operated switch, see following work steps

R50/R53 up to 04/2004 only

see Deactivation of airbags

R50/R53 from 04/2004 only

Deactivation via key-operated switch, see following work steps

The following airbags are deactivated simultaneously with the key-operated switch (1)

1. Passenger airbag
2. Side airbag (passenger side)
3. If necessary, knee airbag in US models (passenger side)

The airbags can only be deactivated/reactivated while the vehicle is stationary and with the door open.

Scheme 81

Deactivation

1. Turn key-operated switch with ignition key to "OFF" position.

Deactivated airbags on passenger side out of operation.

Head airbag on passenger side remains active.

All airbags on driver side remain active.

Activation

2 Turn key-operated switch with ignition key to "ON" position.

All the airbags in the vehicle are activated and are triggered in appropriate situations.

Scheme 82

Warning lamp

When the ignition key is turned in the ignition lock, the function of the airbag system is checked and the warning lamp in the center console lights up for several seconds.

1. The warning lamp is permanently lit when the passenger airbags are deactivated
2. The warning lamp goes out after a few seconds when the passenger airbags are activated

Scheme 83

72 12... Notes on scrapping vehicles with gas generators (airbag system)

The gas generator is a pyrotechnical component and is for the most part permanently mounted on the following components

1. Airbag module Driver's/passenger airbag Side airbag Head airbag Knee airbag
2. Automatic electric reel
3. Belt end fitting tensioner
4. Belt buckle tensioner
5. Safety battery terminal
6. Active head restraint

In accordance with accident prevention regulations and specific national regulations, gas generators must be rendered unusable before they are scrapped. This is necessary because pyrotechnical objects can cause injury if improperly activated (e.g. scrapping with flame cutters).

With vehicles which are scheduled for scrapping, it is always essential prior to draining and further stripping work to ensure that all the gas generators in the vehicle are fired. The fired gas generators can then be scrapped together with the vehicle.

Gas generators that have not fired constitute a hazard (also to the environment)!

The components of an airbag system must always be disposed of. Such components must not be sold on as used parts

Scheme 84

Safety precautions and general information

Overview of sensors for airbag system

Check and/or replace following components after airbag triggering

Satellites (control unit + sensor)

1. Components Satellite, A-/B-pillar, left/right Satellite, front door Satellite, rear seat Satellite, driver's/front passenger seat Satellite, vehicle center
2. Procedure Inspect visually for mechanical damage Read fault memory Disconnect battery and observe waiting period Rectify faults Connect battery and observe waiting period (at least 10 seconds) Delete fault memory Turn off ignition and wait at least 2 minutes (no consumers may be switched on during this period such as e.g. inside lights, radio, etc.) Switch on ignition (wait at least 10 seconds) Clear fault memory and if necessary rectify faults

Cables and plugs

1. Components and procedure Check cables and plugs for damage, replace if necessary. (e. g. corrosion, correct engagement, bent pin)

Belt system

1. Components Retractor mechanism Belt buckle tensioner Seatbelt height adjustment Anchor fitting tensioner
2. Procedure Check components, replace if necessary

Seats

1. Components Seat Airbag module Active head restraint
2. Procedure

1. Check seats (function check of seat mechanism), replace if necessary
2. Check seat screw/bolt connections
3. Replace gas generator, active head restraint system If the severity of the impact has not caused any other damage to the seat, only the triggered gas generator needs to be replaced. External feature: The triggered head restraint is folded forwards and engaged. The repair work can be carried out in the car with the rear panel removed. The entire system can be pushed back into its original position and the new gas generator installed. The gas generator can be replaced up to 5 times.

1. Replace airbag module and, if necessary, seat cover with padding

Driver's airbag

1. Components Airbag module Steering Wheel Steering column (if damaged)
2. Procedure Replace faulty components Replace steering wheel

Front-passenger airbag

1. Components Airbag module Trim, instrument panel Supporting tube (if damaged)
2. Procedure Check components; replace if necessary

Side airbag, front/rear

1. Components Airbag module Door panel Door in white Seat
2. Procedure Check components; replace if necessary

Head airbag

1. Components Airbag module Trim, A-pillar Roofliner Trim, B-pillar (if damaged) Trim, C-pillar (if damaged) Connection/mounting (on side frame)
2. Procedure Check components; replace if necessary

Knee airbag

1. Components Panel (driver's side) Lower section of glovebox Active knee protector (driver's and passenger sides)
2. Procedure Replace faulty components

Passive knee protector

1. Components Trim panels (driver's side) Glovebox incl. knee protector (passenger side)
2. Procedure Replace faulty components Check fastening elements

72 12 055 Removing and installing side airbag (sport seat)

Necessary preliminary work

1. Disconnect «BATTERY EARTH LEAD»(/bmw/m3/e90-2007-2013/remont/door-locks-anti-theft-systems/#general-electrical-system-repair-e90__61-20-900-disconnecting-and-connecting)
2. Remove «REAR PANEL ON FRONT SEAT»(/bmw/m3/e90-2007-2013/remont/seats/#seats-repair-e90__52-13-198-removing-and-installing)
3. Remove «FRONT SEAT»(/bmw/m3/e90-2007-2013/remont/seats/#seats-repair-e90__52-13-000-removing-and-installing)

Cut cable straps.

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

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

Note. If necessary, release yellow plug housing (1) from holder on seat mechanism.

Scheme 85

Unclip cable holder (1) from seat mechanism (2).

Scheme 86

Unscrew nuts (1).

Installation note

Replace nuts.

Tightening torques 72 12 02AZ .

Scheme 87

Installation note

Make sure wiring harness is correctly laid.

72 12 000 Removing and installing/replacing airbag module on passenger side

Necessary preliminary tasks

1. Disconnect «BATTERY NEGATIVE LEAD»(/bmw/m3/e90-2007-2013/remont/door-locks-anti-theft-systems/#general-electrical-system-repair-e90__61-20-900-disconnecting-and-connecting)
2. Remove «GLOVEBOX»(/bmw/m3/e90-2007-2013/remont/door-locks-anti-theft-systems/#body-equipment-repair-e90__51-16-366-removing-and-installing)

Car and airbag module up to 03/2006

Unlock PLUG CONNECTION (1) and disconnect.

Note. Secure airbag module on passenger side (3) against falling out.

Unscrew nuts (2).

Tightening torque 72 12 01AZ .

Remove airbag module on passenger side (3) towards bottom.

Scheme 88

Car + airbag module from 03/2006

Unlock PLUG CONNECTIONS (1) and disconnect.

Note. Secure airbag module against falling out.

Unscrew nuts (2).

Tightening torque 72 12 01AZ .

Remove airbag module in downwards direction.

Scheme 89

Replacement in car up to 03/2006 only, with airbag module from 03/2006

Note. Before installing the airbag module on the passenger side (2), it is necessary to fit the accompanying firing cable (4) and secure it with the accompanying foam sticker pads (5).

Insert plug connections (1) and (3) (pay attention to color coding).

Attach accompanying foam sticker pads (5) as follows

Scheme 90

1. One foam sticker pad (5) each to both outer edges (A) and (B) of airbag module on passenger side (2)
2. One foam sticker pad (5) in the middle so as to leave a free length L = 190 ± 10 mm up to cable entry into the firing cable plug (4)

Clip firing cable plug (4) into installation position in car.

Note. Subsequent installation is the same as for the car and airbag module from 03/2006 version.

72 12 004 Removing and installing/replacing knee airbag module for driver protection

Necessary preliminary tasks

1. Disconnect «BATTERY NEGATIVE LEAD»(/bmw/m3/e90-2007-2013/remont/door-locks-anti-theft-systems/#general-electrical-system-repair-e90__61-20-900-disconnecting-and-connecting) .
2. Remove «LIGHT CONTROL UNIT»(/bmw/m3/e90-2007-2013/remont/door-locks-anti-theft-systems/#general-electrical-system-repair-e90__61-31-037-removing-and-installingreplacing) .

Release screws (1).

Feed out trim panel for pedal mechanism (2) from marked area (3) and set down towards bottom.

Installation note

Make sure trim panel is correctly fitted (marked area).

Scheme 91

Release screws (1).

Scheme 92

Release screw (1).

Scheme 93

Release screw (1).

Scheme 94

72 12 006 Removing and installing/replacing knee airbag module for front passenger protection

Operation is identical to

1. Removing «GLOVE BOX»(/bmw/m3/e90-2007-2013/remont/door-locks-anti-theft-systems/#body-equipment-repair-e90__51-16-360-removing-and-installing) .

72 12 060 Removing and installing/replacing left or right head airbag

Necessary preliminary tasks

1. Disconnect «BATTERY NEGATIVE LEAD»(/bmw/m3/e90-2007-2013/remont/door-locks-anti-theft-systems/#general-electrical-system-repair-e90__61-20-900-disconnecting-and-connecting)
2. Follow «INSTRUCTIONS»(/bmw/m3/e90-2007-2013/remont/airbag/#restraints-repair-e90__72-12-unlockinglocking-airbag-plug-connections) for unlocking and locking airbag plug connections
3. Remove «ROOFLINER»(/bmw/m3/e90-2007-2013/remont/door-locks-anti-theft-systems/#body-equipment-repair-e90__51-44-011-removing-and-installing)

Head airbag installation summary

Scheme 95

Release screw (1) on end fitting.

Tightening torque 72 12 05AZ .

Release screw (2) on folding pack holder.

Tightening torques 72 12 04AZ .

Folding pack holder (3) is screwed to trim for roof pillar at front.

Installation

If screws (1...3) slip, coat them with Loctite.

If necessary, lever out clip-mounted holder.

Scheme 96

If necessary, slide wiring harness (2) to one side to release screw (1) on folding pack holder.

Tightening torque 72 12 04AZ .

Release screw (3) from folding pack holders.

Tightening torques 72 12 04AZ .

Installation

If screws (1) and (3) slip, coat them with Loctite.

If necessary, lever out clip-mounted holder.

Scheme 97

Unlock PLUG CONNECTION (4) and disconnect.

Release screws (1) on B-pillar ramp.

Tightening torque 72 1206AZ .

Unscrew bolt (3).

Tightening torque 72 12 03AZ .

Remove gas generator (5) with head airbag.

Scheme 98

61 00... Repairing airbag cables

Safety regulations

Safety regulations for HANDLING COMPONENTS OF AIRBAG SYSTEM .

INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .

Procedure for cable repair

52 14 385 Replacing gas cartridge (firing unit) for crash-active headrest on front seat

Switch off the ignition!

Necessary preliminary work

1. Disconnect «BATTERY EARTH LEAD»(/bmw/m3/e90-2007-2013/remont/door-locks-anti-theft-systems/#general-electrical-system-repair-e90__61-20-900-disconnecting-and-connecting)

Labels are available as spare parts.

Starting situation

Head restraint is in the crash position after being triggered.

Note. Firing unit can only be removed in the triggered state. The complete crash-active head restraint must be replaced if the event of a head restraint fault signal and an untriggered firer.

Lever out cover welt in marked area.

Remove cover with padding from head restraint.

Scheme 99

Unclip service flap.

Move firing unit (1) forwards and remove towards front.

Scheme 100

Unfasten plug connection (1) and disconnect.

Replace firing unit.

Installation note

Plug connection (1) must audibly snap into place.

Check firm engagement of plug connection (1) by gently pulling on connector.

Lay cable in side guide.

Scheme 101

Press locking spring (1) on left and right through opening and secure with cylindrical pins (or similar).

Head restraint is unlocked.

Scheme 102

Pull head restraint (1) at an angle downwards until it is completely in lowest position and rests on linkage.

Hold head restraint (1) in this position for the following tasks.

Scheme 103

Clip firing unit (1) onto linkage (2).

Installation note

Check that firing unit (1) is firmly seated on linkage.

Press firing unit (1) forwards and clip into place.

Scheme 104

Installation note

Visually check that firing unit is correctly seated.

Attach label for identification after replacement.

Clip service flap into place.

Scheme 105

Notes on safety

1. «SAFETY REGULATIONS»(/bmw/m3/e90-2007-2013/remont/manual-power-steering/#steering-and-wheel-alignment-repair-e90__72-00-safety-regulations-for-handling) for handling airbag modules, airbag components and pyrotechnical seat belt tensioners
2. «NOTES ON SCRAPPING»(/bmw/m3/e90-2007-2013/remont/airbag/#restraints-repair-e90__72-12-notes-on-scrapping-vehicles) vehicles with gas generators
3. «DEACTIVATION/ACTIVATION PYROTECHNICAL COMPONENTS»(/bmw/m3/e90-2007-2013/remont/airbag/#restraints-repair-e90__72-12-deactivating-front-passenger-airbags)

Handling electrical and electronic equipment

1. «UNLOCKING/LOCKING AIRBAG PLUG CONNECTIONS»(/bmw/m3/e90-2007-2013/remont/airbag/#restraints-repair-e90__72-12-unlockinglocking-airbag-plug-connections)
2. «REPAIRING AIRBAG LINES»(/bmw/m3/e90-2007-2013/remont/door-locks-anti-theft-systems/#general-electrical-system-repair-e90__61-00-repairing-airbag-cables)
3. «HANDLING OPTICAL FIBRES»(/bmw/m3/e90-2007-2013/remont/door-locks-anti-theft-systems/#general-electrical-system-repair-e90__61-00-notes-on-handling-optical)

Check

1. «CHECK SEAT BELT»(/bmw/m3/e90-2007-2013/remont/airbag/#restraints-repair-e90__72-11-checking-automatic-safety-belt)
2. «CHECK LIST FOR SEAT BELT»(/bmw/m3/e90-2007-2013/remont/airbag/#restraints-repair-e90__72-11-inspection-list-for-automatic)

Airbag system

1. Functional description and checking, refer to Diagnosis system
2. «DEACTIVATING AIRBAGS»(/bmw/m3/e90-2007-2013/remont/airbag/#restraints-repair-e90__72-12-deactivating-front-passenger-airbags)
3. «PROCEDURE AFTER AIRBAG DEPLOYMENT»(/bmw/m3/e90-2007-2013/remont/manual-power-steering/#steering-and-wheel-alignment-repair-e90__72-12-procedure-after-airbag-triggering) .

It is essential to comply with the regulations as specified in the law relating to the use of explosives when working on airbag units and seat belt tensioners.

Airbags, seat belt tensioners etc. are pyrotechnical objects. Pyrotechnical objects are assigned to different danger classes on the basis of the quantity of propellant that they contain. The assignment can be ascertained from the identification marking on the product

This applies in particular to the following components

1. Airbag modules (driver's/front passenger airbags, side airbags)
2. Buckle/belt tensioner
3. Head airbag
4. Active knee protection
5. Active head restraint
6. Safety battery terminal

1. Regulations

The regulations quoted in the following refer to the Federal Republic of Germany.

In all other countries, the relevant legislation and regulations must be observed in each case. Country-specific legal regulations that go beyond this information or court decisions based thereon must be followed in each case or given precedence over these regulations.

The following components used by BMW

1. Pyrotechnical restraint systems are subject to danger class PT1
2. Gas generators are pyrotechnical objects belonging to danger class T1.

Handling, transporting and storing non-fired gas generators are subject to the "Explosive Materials Act" (law relating to the use of explosives dated 13/09/1976).

The relevant trade supervisory authority must be notified at least 2 weeks before pyrotechnical objects are handled for the first time. Here the relevant authority must be notified in writing of the person responsible (e.g. dealership owner, holder of general power of attorney or if necessary workshop supervisor). A certificate of qualification, i.e. specific training, is not required for the person responsible.

2. Disassembly and assembly

1. Inspection, testing and installation work may only be carried out by expert trained personnel in BMW Service.
2. Work on components of the airbag system should only ever be carried out with the battery disconnected, the negative terminal post covered and the plug connection of the cable leading to the gas generator disconnected. If only the battery is disconnected, the following prescribed waiting period must be observed without fail: 30 minutes for vehicles up to 9/93; 1 minute for vehicles from 9/93
3. In the event of breaks in work, a component with a gas generator that has been removed must be secured against access by other persons.
4. Individual components must never be repaired. Instead, always replace them.
5. Do not treat airbag system components with cleaning agents or grease.
6. Components of the airbag system must not be exposed to temperatures in excess of 75°C.
7. Airbag system components, including electronic diagnostic components, which have been dropped from heights in excess of 0.5 m must not be reinstalled in the vehicles.
8. Before installing, subject components such as housing, connector pins etc. (including electronic diagnostic components) to a visual inspection for damage and replace if necessary.
9. Airbag system components may only be electrically tested while they are installed and only with the BMW ISTA.
10. Danger of injury: The airbag module may only be set down with the airbag itself facing upwards . Otherwise the generator will be thrown upwards if it is fired.
11. Do not point the firing pellet of a gas generator at other persons.
12. Components with gas generators must not be fired while they are removed. They must be disposed of by special disposal companies or returned to BMW in the packaging of the new components.
13. When carrying out straightening and welding work with an electric welder: Disconnect battery Cover negative terminal (post)
14. Avoid all contact with the skin when removing a fired airbag module - wear gloves. Wash with water after contact with the skin.

3. Transport

1. Components with gas generators must be sent off in the packaging of the new components.

4. Storage

1. Observe the regulations of the relevant trade supervisory authority and the applicable national regulations.

72 12... Unlocking/locking airbag plug connections

Following versions of plug connections on airbag module/gas generator are possible

1. Airbag plug connection on gas generator/airbag module is offset by 90°
2. Airbag plug connection on gas generator/airbag module is straight (3 versions)

Airbag plug connection on gas generator/airbag module offset by 90°

There are two ways of unlocking this airbag plug connection on the gas generator/airbag module

Method 1

Simultaneously pull cover (1) upwards at lugs on left and right (2).

Scheme 106

Method 2

Insert a narrow screwdriver into recess (1) in housing (2).

Carefully rise cover (3) off (4).

Scheme 107

Cover (1) is not positioned higher than housing (2).

The airbag plug connection is unlocked and can now be detached from the gas generator/airbag module.

Scheme 108

Installation

After attaching airbag plug connection to gas generator/airbag module, press cover (1) downwards until it rests flat on housing.

Check that it catches properly.

Scheme 109

Airbag plug connection on gas generator/airbag module is straight (2 versions)

Version 1

Press locking/unlocking plate (1) at edge (4).

Locking/unlocking plate (1) snaps upwards at opposite edge (3) and releases detent lug (2).

Scheme 110

The airbag plug connection is unlocked and can now be detached from the gas generator/airbag module.

Scheme 111

Installation

After attaching airbag plug connection to gas generator/airbag module, check whether detent lug (2) is visible in opening of locking/unlocking plate (1).

Only if the detent lug (2) is visible will the airbag plug connection gas generator/airbag module be correctly engaged.

Scheme 112

Version 2

Press locking/unlocking plate (1) on edge (3) and pull plug (2) out of plug housing (4).

Installation

Only if the detent lug is visible in opening (5) will the gas generator/airbag module plug connection be correctly engaged.

Scheme 113

Version 3

Press lock button (1) and pull out plug (2) up to initial engagement position.

Detach plug (2) from firing pellet.

Installation

Insert plug connection in initial engagement position in gas generator/airbag module and engage in final engagement position.

Scheme 114

Illustration of version 3 with gas generator

1. Initial engagement position
2. Final engagement position

1. Lock button
2. Gas generator

Scheme 115

Version 4 - Crash-active head restraint

Press locking clip at edge and disconnect plug (1).

Installation

Check for correct engagement.

Scheme 116

72 14... Removing and installing/replacing Top Tether eyelets for child seat

Note. Two or three Top Tether eyelets are installed, depending on the model.

Lever out covers (1) and release screws underneath.

Remove Top Tether eyelets (2).

Tightening torque 52 24 03AZ .

Scheme 117

Scheme 118

See also:
• HANDLING OPTICAL FIBRES
• PROCEDURE AFTER AIRBAG DEPLOYMENT
• FRONT SEAT
• 72 11 6AZ
• 5226005 REMOVING AND INSTALLING/REPLACING REAR SEAT (THROUGH-LOADING)
• 5224005 REMOVING AND INSTALLING OR REPLACING REAR SEAT
• 5143150 REMOVING AND INSTALLING OR REPLACING TRIM FOR LEFT OR RIGHT DOOR PILLAR (BOTTOM)
• 5143148 REMOVING AND INSTALLING OR REPLACING TRIM ON LEFT OR RIGHT DOOR PILLAR (TOP)
• REAR WINDOW SHELF
• REPAIRING AIRBAG LINES
• BATTERY EARTH LEAD
• REAR PANEL ON FRONT SEAT
• 7200... SAFETY REGULATIONS FOR HANDLING COMPONENTS WITH GAS GENERATORS
• GLOVEBOX
• LIGHT CONTROL UNIT
• GLOVE BOX
• ROOFLINER
• INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY
• 52 24 03AZ
• SAFETY REGULATIONS
• NOTES ON SCRAPPING
• DEACTIVATION/ACTIVATION PYROTECHNICAL COMPONENTS
• UNLOCKING/LOCKING AIRBAG PLUG CONNECTIONS
• REPAIRING AIRBAG LINES
• CHECK SEAT BELT
• CHECK LIST FOR SEAT BELT
• SAFETY REGULATIONS
• SAFETY REGULATIONS