BMW X5: Overview Of Airbag Modules, Airbag Control Unit, Belt Tensioners
![Airbag Generator-airbag](images/books/1905/index279(2).png)
Fig. 17: Identifying Airbag Modules, Airbag Control Unit, Belt Tensioners
Components Location
- Safety battery terminal (*)
- Side airbag, front seat, left/right (*)
- Belt tensioner, front left/right (*)
- Airbag unit, passenger side (*)
- Airbag module, driver's side (*)
- Head airbag, left/right (*)
(*) Components contain pyrotechnical devices
PROCEDURE AFTER AIRBAG TRIGGERING AS RESULT OF AN ACCIDENT
Check and/or replace following components after airbag triggering:
Satellites (control unit + sensor)
- Components
- Satellite, A-/B-pillar, left/right
- Satellite, front door
- Satellite, rear seat
- Satellite, driver's/front passenger seat
- Satellite, vehicle center
- Procedure
- Read out fault memory
- Disconnect battery and observe waiting period
- Rectify faults
- Reconnect battery and observe waiting period
- Clear 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 ignition on.
- Clear fault memory and if necessary rectify faults
Cables and plugs
- Components and procedure
- Check cables and plugs for damage, replace if necessary.
Belt system
- Components
- Automatic safety belt tensioner
- Belt buckle tensioner
- Seatbelt height adjustment
- Procedure
- Check components, replace if necessary
Seats
- Components
- Seat
- Airbag module
- Active head restraint
- Procedure
- Check seats (function check of seat mechanism), replace if necessary
- Check seat screw/bolt connections
- Replace gas generator of 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 seat cover with padding
Driver's airbag
- Components
- Airbag module
- Steering wheel
- Steering column (if damaged)
- Procedure
- Check components, replace if necessary
- Replace steering wheel
Passenger airbag
- Components
- Airbag module
- Instrument panel trim
- 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 (AHPS)
- Components
- Airbag module
- Trim, A-pillar
- Roofliner
- Trim, B-pillar (if damaged)
- Trim, C-pillar (if damaged)
- Bodyshell
- Procedure
- Check components, replace if necessary
Knee airbag
- Components
- Panel (driver's side)
- Lower section of glovebox
- Active knee protector (driver's and passenger sides)
- Procedure
- Check components, replace if necessary
Passive knee protector
- Components
- Panel (driver's side)
- Glovebox incl. knee protector (passenger side)
- Procedure
- Check components for damage, replace if necessary
- Check fastening elements
READ NEXT:
WARNING: Read and comply with safety regulations for handling airbag
modules and
pyrotechnical belt tensioners.
IMPORTANT: An airbag plug connection must be replaced if it is damaged.
Sourcing refer
WARNING: Read and comply with safety regulations for handling airbag
modules and
pyrotechnical belt tensioners.
Incorrect handling can activate airbag and cause injury.
Necessary preliminary tasks:
WARNING: Read and comply with safety regulations for handling airbag
modules and
pyrotechnical belt tensioners.
Incorrect handling can activate airbag and cause injury.
A damaged head airbag must b
SEE MORE:
NOTES ON FUEL PRESSURE CHECK (REFERENCE PRESSURE: ENVIRONMENT)
Feature of this version with ambient pressure:
The connection for the vacuum hose of the fuel pressure regulator is located
between the throttle and the air
cleaner or on the air cleaner.
Test precondition:
The correct fuel pressure reg
REMOVING AND INSTALLING (REPLACING) CONTROL UNIT (PARK DISTANCE
CONTROL)
IMPORTANT: Read and comply with notes on protection against
electrostatic damage (ESD
protection).
Necessary preliminary tasks:
Remove flap in luggage compartment panel on right.
Fold insulating mat (1) to one side.
Fig. 1