– Check whether the fault „Resistance too high“ has been en‐
tered simultaneously for the belt tensioner and/or belt force
limiter. Triggered belt tensioners and/or belt force limiters must
satisfy both conditions. „Prerequisite: Airbag control unit not
yet replaced“.
Note
♦
The fault „Resistance too high“ may also have been entered
in the case of an open circuit in the wiring. There is then not
normally any crash entry.
♦
Depending on the crash situation, the belt tensioner may have
been triggered but »NOT« the belt force limiter. The disposal
procedure for pyrotechnic components is then to be heeded
⇒ page 96 .
♦
Also heed: Section on checking of seat belts ⇒ page 102 .
♦
Triggered belt force limiters can be identified from the follow‐
ing:
♦
Pin -1- and lug -3- ejected from housing of belt force limiter at
automatic belt retractor.
♦
Tab -2- no longer vertical but facing outwards at an angle.
– If parts of the belt system are removed on account of an acci‐
dent, the belt system bolts are to be replaced.
– The following must also be replaced if necessary (visual in‐
spection): All damaged components
– After replacing airbag units or the control unit, affix labels (tear-
off portion only) to the registration card and forward the regis‐
tration card to the appropriate Regional Sales Centre or
importer for recording purposes.
1.9 Checking airbag fastening elements fol‐
lowing an accident
Always replace all damaged fastening elements. Bending back
into shape or »forcing« is not permitted.
The following components must be checked after triggering of the
corresponding airbag.
If the front passenger's airbag has been triggered:
♦ Dash panel central tube; stress-free fitting of the front pas‐
senger's airbag supports and the front passenger's airbag unit
must be possible. Otherwise the central tube is also to be re‐
placed.
♦ Check the glove compartment for damage. If damaged, the
glove compartment must be replaced.
If the driver's airbag has been triggered:
♦ Steering wheel: Remove the steering wheel and set it down
on the rim on a flat surface. The full area of the rim must lie
flat. Otherwise the steering wheel is to be replaced.
♦ Check the steering wheel for smoke marks. Replace the steer‐
ing wheel if such marks are found.
1.10 Accident not involving airbag triggering
♦ Pyrotechnic component replacement is not necessary if the
airbag warning lamp -K75- does not indicate a fault. Seat belts
are to be checked separately.
Audi A8 2003 ➤
General body repairs, interior - Edition 07.2011
1. Safety regulations and test methods for pyrotechnic, electrical and mechanical components of the restraint system 101
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