1999 AUDI A4 airbag

69-45

Also
All seatbelts with activated belt tensioners.
On Board Diagnostic will recognize if belt
tensioners have been activated for airbag V, 7
and 8.

A - if airbag control module has been
triggered:
Front seat belt tensioners: Read Measuring Value Block 1
1
2
3
4

Repair Manual, Body On Board Diagnostic (OBD), Repair Group 01

Rear seat belt tensioners: - Read Measuring Value Block display group 1:
Activated belt tensioners can be identified by "0111" or "too large"
indicated on display.
Read Measuring Value Block 2
1
2
3
4

Repair Manual, Body On Board Diagnostic (OBD), Repair Group 01
- Read Measuring Value Block display group 2:
Activated belt tensioners can be identified by "0111" or "too large"
indicated on display.
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69-46

B - If airbag control module is replaced:

- Check DTC memory:

Repair Manual, Body On Board Diagnostic
(OBD), Repair Group 01


Activated belt tensioners can be identified by the
DTC: "Ignitor for belt tensioner - resistance is too
high"

- If necessary (visual check) also replace: all
damaged components.

Accident without airbag deployment
If airbag Malfunction Indicator Lamp (MIL) -K75-
does not indicate a DTC, then airbag
components do not need to be replaced. Check
seat belts separately.
After replacing airbag units or the control module,
attach label (only tear-off strip) to registration
card and send in registration card.
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69-47

Airbag system side airbags, safety
precautions


WARNING!

Checking, removing, installing and servicing
may ONLY be performed by qualified
personnel.
Following the same safety precautions as for
driver and passenger-side airbags.
Only use original equipment seat covers and
backrest covers that are approved for use
with side airbags (identified by a label on the
fabric).
Do not use extra seat covers over the seat as
they interfere with proper side airbag
operation.
Do not use seat cushion supports, mats or
similar since they impare seat occupant
sensor and airbags

Note:
The driver's seat does not have a seat occupant
sensor.
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WARNING!

For vehicles without heated seats, a dummy
seat heating element is installed (heating
element without heating wire).
The seat backrest foam must not be cut out
in the area of the side airbag.
When installing, seam near side airbag must
be straight.
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69-48

WARNING!

All upholstery clips must be replaced (metal
and plastic clips).
Only use genuine Audi replacement
upholstery clips.
When installing, all upholstery clips must be
installed at the same location from which
they were removed.
If the seat cover is damaged (rips, burn holes
etc) near the side airbag, always replace the
seat cover to ensure proper side airbag
inflation.
Seat cover may not be repaired in the area
near the side airbag (special thread and an
exact seam are used).
Always replace seat cover if side airbag has
deployed.
All damaged components must be replaced
after an accident. If no damage to the airbag
unit is found, the airbag unit can be reused.

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Side airbag units have an expiration date
(see sticker on B-pillar). If side airbag units
are replaced, pull sticker with expiration date
off new side airbag unit and place it over old
sticker on B-pillar. Replace side airbag unit
and sticker after 14 years.
If there is no sticker on the B-pillar, airbag
change must be indicated in service plan.
If side airbag unit is replaced, pull airbag
number sticker off side airbag unit and stick
it to the seat pan.
Do not use a needle or other sharp objects to
poke around area near airbag and sensor
mat.
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69-49

Additional safety precautions for side
curtain protection airbag


WARNING!

All safety precautions for the driver and
passenger-side airbags apply, as well as the
following:

Visually check the vehicle's trim panels for
damage before every installation.
Do not attempt any repair work on the
vehicle trim panels (top trim panels for A-
pillar, B-pillar, C-pillar and D-pillar).
Make sure the trim panel is securely fitted
during installation.
Side curtain airbags must only be folded at
its intended location (transition of roof to A-
pillar).
To carry out repairs behind the side curtain
airbag, always remove the entire unit first.
After removal, always carry the side curtain
airbag in the folded position.
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69-50

WARNING!

After removal, place the side curtain airbag
into the transport container in the folded
position or lay on a clean, even surface (on a
blanket or in the luggage compartment).
After servicing the body of vehicle in vicinity
of airbag, check the body for welding beads,
deformations and chafe marks (compare to
opposite side of the vehicle).
Always hold the side curtain airbag
securely.
After removal, always fold the side curtain
airbag and grasp by the igniter (thumbs
toward E-connection).
Always keep one hand on the igniter.
Never twist, wind, bend, throw, spin, pull,
hang, squeeze, press, pinch or clamp the
side curtain airbag.
If any contamination penetrates into the
fabric (i.e. oil, grease, lacquer, paint or
solvent), the unit must always be replaced.
Pa
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