Restraint System Pyrotechnic, Electric And Mechanical Components, Replacing After A Collision

Special tools and workshop equipment required

Vehicle Diagnostic Tester

The airbag control module must be replaced:

If the display Control module faulty appears after checking the DTC memory
with driver and passenger airbag deployment "but not with airbag generation 9.*, 10.* and 8. R "
after three side/ driver/ front passenger airbag or belt tensioner deployments
if housing is damaged
if there is deformation on tunnel in 200 mm circumference around control module

Always replace the following:

All deployed airbag units

Also with Front Passenger Airbag Deployment:

Instrument Panel
Deformed supports of the front passenger airbag unit (cannot be reformed).
All front airbag sensors on the front end
Remaining transverse acceleration sensors if the mounting points are deformed in the sensor area

Also with Driver Airbag Deployment:

Return Spring with Slip Ring
All front airbag sensors on the front end
Remaining transverse acceleration sensors if the mounting points are deformed in the sensor area

Also with Thorax Airbag Deployment:

Pressure sensors on the deployed side
Transverse acceleration sensors on the deployed side
Cover
Cushion
With a folding rear seat backrest: side cushion (if equipped)
Remaining transverse acceleration sensors if the mounting points are deformed in the sensor area

Also with Passenger Occupant Detection System:

Each time the front passenger airbag and/or belt tensioner on the front passenger side is deployed, the Passenger Occupant Detection System Control Module -J706- basic setting must be performed using the Vehicle Diagnostic Tester. .
If the seat rail and/or the seat pan are replaced due to deformations, then a basic setting must be performed on the Passenger Occupant Detection System Control Module -J706- using the Vehicle Diagnostic Tester. .

Also:

All automatic belt retractors with deployed seat belt tensioners
All automatic belt retractors with deployed seat belt force limiters (depending on vehicle equipment)
Seat belt latches for all automatic belt retractors with deployed seat belt tensioners with the belt on
Seat belt height adjuster (manual and power) for all automatic belt retractors with deployed seat belt tensioners with the belt on

-- Connect the Vehicle Diagnostic Tester if there is a chance the belt tensioner and/or seat belt force limiter deployed.

-- In Guided Fault Finding under 15 - Airbag , check whether there is a crash entry in the airbag control module.

-- Check if the Resistance too large fault is stored at the same time for the seat belt tensioner and/or seat belt force limiter. Deployed belt tensioners and/or belt force limiters must fulfill both conditions. "Requirement: the airbag control module was not replaced yet".

TIP:

The "Resistance too high" error may also be stored if there is an open circuit. Then there is normally no crash entry.
Depending on the crash, the belt tensioner may have deployed while the belt force limiter did >>NOT<<. Then please follow the guidelines for pyrotechnic component disposal. Refer to AIRBAG, BELT TENSIONER AND BATTERY CUT-OUT UNITS, STORING, TRANSPORTING AND DISPOSING (PYROTECHNIC COMPONENTS) .
Also check the seat belts. Refer to SEAT BELTS, CHECKING .

-- If parts of the seat belt system are removed due to an accident, replace the belt system bolts.

-- If needed (visual inspection), the following must also be replaced: all faulty components.

-- After replacing the airbag units or the control module, affix stickers (only tear-off strips) to the registration card and return the registration card to the relevant distribution center or to the Importer for registration.

Deployed seat belt force limiters can be recognized by the following characteristics:

Fig 1: Identifying For Deployed Belt Force Limiters

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

The pin -1- and tab -3- are protruding out of the belt force limiter housing on the automatic belt retractor.
The tab -2- is no longer vertical but is diagonal toward the outside.

-- If parts of the seat belt system are removed due to an accident, replace the belt system bolts.

-- If needed (visual inspection), the following must also be replaced: all faulty components.