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

Replace all components that were affected by the accident and check all others! 

Check and/or replace following components after airbag deployment:

• Components
  • Sensor B-pillar (left/right)
  • Sensor front door (left/right)
  • Sensor seat, Driver-/passenger's side
  • Sensor, pedestrian protection
  • Front sensor (engine compartment)
  • Airbag control unit, vehicle interior

• Procedure
  • Inspect visually for mechanical damage (housing, plug connections). Replace damaged components.
  • Connect BMW diagnosis system
  • Read fault memory
  • Disconnect the vehicle battery and adhere to the waiting period (at least 30 seconds)
  • Rectify faults
  • Reconnect the vehicle battery and adhere to the waiting period (at least 10 seconds)
  • Delete fault memory
  • Switch off ignition and wait at least 2 minutes (no consumers may be switched on during this period such as interior light, radio, etc.)
  • Switch the ignition on (wait for at least 10 seconds)
  • Delete fault memory
  • If you cannot delete the fault memory: Replace the component that is causing the fault

Replace the airbag control unit in the following cases only: 

• In the case of visible external damage
• In the case of a corresponding fault memory entry (airbag indicator light is illuminated)

Cables and connectors 

• Components and procedure
  • Check cables and connectors for damage, replace if necessary.

    (e.g. corrosion, correct engagement, bent pin)

    Seat belt system 

• Components
  • Automatic reel
  • Seat belt tensioner
  • Seat belt height adjustment
  • Anchor fitting tensioner
  • Seat belt buckle

• Procedure
  • Check components, replace if necessary
  • Additional door lock: Check for foreign body, remove it if necessary.

Seats 

• Components
  • Seat
  • Airbag module
  • Active head restraint
• Procedure
  • Check seats (functional check of seat mechanism), replace if necessary
  • Check seat connection
  • Replace gas generator of active head restraint

    If the severity of the crash 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 vehicle 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 upholstery

Driver's airbag 

• Components
  • Airbag module
  • Steering Wheel
  • Steering column (if damaged)
• Procedure

• Replace faulty components
• Replace steering wheel

Front-passenger airbag 

• Components
  • Airbag module
  • Dashboard trim panel (must be replaced with vehicles without replaceable airbag cover!)
  • Supporting tube (if damaged)
• Procedure

• Check components; replace if necessary

Side airbag, front/rear 

• Components
• Airbag module
• Door trim panel
• Door in white
• Seat

• Procedure

• Check components; replace if necessary

Head airbag 

• Components
  • Airbag module
  • A-pillar trim panel
  • Roofliner
  • Cover, B-pillar (if damaged)
  • C-pillar trim panel (if damaged)
  • Connection/mount (on side frame)
• Procedure

• Check components; replace if necessary

Knee airbag 

• Components
  • Trim panel (driver's side)
  • Lower section of glove box
  • Knee protection (Driver- and passenger's side)
• Procedure
  • Replace faulty components

Passive knee protection 

• Components
  • Trim panels (driver's side)
  • Glove box incl. knee protection (passenger's side)
• Procedure

• Replace faulty components
• Check retaining elements