audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

ABOUT US
Removing and installing crash sensor for side airbag (front) > < Overview of crash sensors for airbags

A4 Mk3

Removing and installing crash sensor for front airbag
Removing and installing crash sensor for front airbag
  Note
Removal and installation are identical on the left and right.
Removing
  WARNING
Observe safety regulations for pyrotechnic components → Chapter.
Risk of injury due to automatic engine start on vehicles with start/stop system.
t  On vehicles with activated start/stop system (indicated by a message in the instrument cluster), the engine may start automatically on demand.
t  Therefore it is important to ensure that the start/stop system is deactivated when performing repairs (switch the ignition off, and if required switch the ignition on again).
–  Switch on ignition.
–  With ignition switched on, disconnect battery earth wire → Electrical system; Rep. gr.27.
   
–  Remove wheel housing liner (front) → Rep. gr.66.
  WARNING
Before handling pyrotechnic components (e.g. unplugging the electrical connector) the mechanic must discharge static electricity by briefly touching the door striker plate, or similar.
–  Release catch -4--arrow- and unplug electrical connector -1-.
–  Unscrew bolts -3- and detach crash sensor for airbag (front) -2-.
Installing
  WARNING
t  Observe safety regulations for pyrotechnic components → Chapter.
t  Before handling pyrotechnic components (e.g. plugging in the electrical connector) the mechanic must discharge static electricity by briefly touching the door striker plate, or similar.
Installation is carried out in the reverse order; note the following:
  Note
t  Make sure electrical connectors are fitted correctly (as far as stop) and engage audibly.
t  Make sure that wiring is not trapped.
  WARNING
The battery must be connected with the ignition switched on. If pyrotechnic components (e.g. airbag or belt tensioner) are inexpertly repaired, this may result in unwanted triggering after connecting the battery. There must not be anyone in the vehicle while you are connecting the battery.
–  With ignition switched on, connect battery earth wire → Electrical system; Rep. gr.27.
  Note
If the airbag warning lamp -K75- indicates a fault following installation, you must interrogate, erase and then re-interrogate the event memory → Vehicle diagnostic tester.
Tightening torque → Chapter
  A69-10294

Removing and installing crash sensor for side airbag (front) > < Overview of crash sensors for airbags