Audi A4: Additional Safety Precautions for Airbag Control Module
WARNING
- After every removal and installation of the Airbag
Control Module -J234-, the "inertial sensor basic
setting" must be performed.
- If the Airbag Control Module -J234- is replaced with a
new part, the basic setting is performed when
implementing the "15 - Replace airbag control module"
program.
- If the Airbag Control Module -J234- is removed and then
the same one is reinstalled, perform the "inertial
sensor basic setting" as follows:
- Connect the Vehicle Diagnostic Tester.
- Switch the ignition on.
- Select and start the Diagnostic
operating mode.
- Select the Test plan tab.
- Select the Select individual test
button and select the following tree structure consecutively:
- Body
- Body Assembly
- 01 - OBD-capable systems
- 15 - Airbag - Airbag Control Module -J234-
- 15 - Airbag, Functions
- 15 - Basic Setting
- 15 - Inertial Sensor Basic Setting
- Start the selected program and follow the instructions on the
Vehicle Diagnostic Tester display.
Additional Thorax Airbag Safety Precautions
- We recommend using original equipment seat covers.
- Seat covers or protective covers that are not specifically
approved for use on Audi seats with thorax airbags must not be
used.
- Do not cut out the backrest material in the thorax airbag area.
- The seam in thorax airbag area must run straight when
installing.
- All upholstery clips must be replaced (metal and plastic clips).
- Using original equipment upholstery clips is recommended.
- During installation, all upholstery clips must be placed in the
same place they were when they were removed.
- If the cover is damaged (with rips, burned holes, etc.) in the
thorax airbag area, it must be replaced for safety reasons so
that airbag deploys correctly.
- Do not repair the backrest cover in the thorax airbag area
(because of special materials and strictly defined seams).
- Always replace the backrest cushion if the thorax airbag
deploys.
- All damaged parts must be replaced after a collision. If no
airbag unit damage is detected, the airbag unit can still be
used.
- If thorax airbag units are replaced, the new thorax airbag
number sticker should be removed and placed over the old sticker
on the seat pan.
- Do not poke the cover with an upholstery needle or other sharp
objects near the airbag, the Front Passenger Seat Occupant
Sensor -G128- or the passenger occupant detection system mat in
the cover.
Additional Head Curtain Airbag Safety Precautions
- Visually inspect the trim panels for damage before every
installation.
- Do not make any repairs to the trim panels (upper A-pillar trim
panel, B-pillar-, C-pillar-, and D-pillar trim panels).
- Make sure the trim panels are secure when installing.
- Always replace the entire module when making repairs behind the
head curtain airbag.
- Handle head curtain airbag modules with great care when removing
and installing them to prevent causing any damage.
- Place any removed head curtain airbag modules back in their
shipping packaging or on a clean and even surface with a cloth
underneath.
- After servicing the body near the head curtain airbag, check the
body for welding beads, deformation and chafe marks (compare
with opposite side of vehicle).
- As long as the gas generator is NOT attached, hold it securely
when transporting, removing and installing, etc.
- Never rotate, coil, knot, throw, slide, push, hang, squeeze,
press, pinch or clamp the head curtain airbag module.
- They may be folded as long as this does not damage them,
especially the protective cover.
Front Thorax Airbag Crash Sensors (Pressure Sensors) Safety Precautions
The thorax airbag crash sensors react to changes in pressure and
therefore must be handled very carefully. Note the following
points:
- Always pay attention to the correct installation position and
only install at the specified component location in the doors.
- Protect the crash sensor from bumps and impacts. Do not use a
crash sensor if it has fallen on the floor. When doing body work
on the door, the crash sensor should be removed.
- The crash sensor is calibrated to the volume of air inside the
door. If the door is deformed resulting in a reduced air space
inside the door, the function of the crash sensor will be
impaired.
- Avoid contamination of the crash sensor. Do not use compressed
air in the area surrounding the crash sensor. Protect crash
sensor from filings or shavings (For example, when installing
door speakers later). Do not use cavity sealant or spray
lubricant near the crash sensor.
- Protect against heat and cold. Avoid heating, For example when
painting or doing other body work. Crash sensors should not be
subjected to temperatures below -40 ºC (-40 ºF) (For example, in
non-climate-controlled airplane cargo holds).
- Protect the crash sensor from moisture when storing or
installing it.
For proper crash sensor function, it must be ensured that the
door is sealed properly after assembly. Note the following
points:
- All components (For example, cover, speaker, door trim panel)
must be installed correctly.
- The door trim panel clips seal the system. If necessary, replace
the clips.
Additional Safety Precautions - Passenger Occupant Detection System
Deactivation, Market-Specific
- After each repair to the front passenger seat where the seat
and/or backrest cover was "disengaged",
a basic setting for the passenger occupant detection system
control module must be performed using the Vehicle Diagnostic
Tester.
- Do not bend the passenger occupant detection system mat.
- A leaking mat must be replaced (service kit).
- Do not bend the passenger occupant detection system pressure
hose.
- Make sure the components in the passenger occupant detection
system (service kit) do not fall onto hard surfaces, do not come
into contact with grease and are not at risk of being damaged by
sharp objects.
- The mat, the fleece and all covers must be fitted without any
folds.
- Make sure the seat cushion and cover are positioned correctly
when installing.
- Replace all upholstery clips or clips and make sure they are
positioned correctly on the seat.
- The system basic setting can only be performed at temperatures
between 0 ºC and 40 ºC (32 ºF and 104 ºF) for 8.R and 9.*
airbags. The temperature must be between 5 ºC and 35 ºC (41 ºF
and 95 ºF) for 10.* airbags.
- Make sure that no objects are placed on the seat when performing
the basic setting.
- The use of additional seat cushions such as pillows impairs the
function of the passenger occupant detection system and the
operation of the airbag system.
Passenger Occupant Detection System Deactivation After a Collision,
Market-Specific
- Each time an airbag or passenger belt tensioner deploys, a basic
setting must be performed on the passenger occupant detection
system control module using the Vehicle Diagnostic Tester.
- If the seat rails and/or seat pan is replaced due to
deformations resulting from a collision, the passenger occupant
detection system must be replaced using the "passenger occupant
detection system service kit". Then perform a "basic setting" on
the passenger occupant detection system control module using the
Vehicle Diagnostic Tester.
READ NEXT:
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
A
WARNING
The seat belt system must be inspected systematically
after every accident. If damage is determined at any
inspection point, the customer must be informed that it
is necessary to r
Seat Belt Latch, Checking
- Insert the belt tongue into the seat belt latch until it clicks
into place. Check whether the locking mechanism is properly
engaged by giving the seat belt webbing a
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machines in or on their person canno
Special tools and workshop equipment required
Omega Clip Tool -T40280-
Removing
- Remove the rear luggage compartment floor.
- Free up the lock carrier trim panel near the rear lid seal
-1-.
- Grip the trim panel -2- by hand and
carefully pull vertically upward -arrows-.
Installi