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

WARNING: This page is about a different car, the 2023 Audi SQ8, 2023 Audi RS Q8, and 2023 Audi Q8. However, it is still accessible from the selected car via links, so may be relevant.

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
if housing is damaged
if there is deformation on tunnel in 200 mm circumference around control module

The Following Must Always Be Replaced:

All deployed airbag units
The Battery Interrupt Igniter -N253-

Also with Front Passenger Airbag Deployment:

Instrument Panel
Deformed front passenger module supports (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:

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 fault 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<<. Follow the disposal information for pyrotechnic components. 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.