Head Curtain Airbag With Igniter, Removing And Installing, Sedan
Special tools and workshop equipment required
- Release Tool Set - Extraction Tool 17: VAS1978/17 from the Release Tool Set: VAS1978/35
Removing
- Follow all safety precautions when working on pyrotechnic components. Refer to SAFETY PRECAUTIONS WHEN WORKING WITH PYROTECHNIC COMPONENTS .
- Follow all regulations when disposing of pyrotechnic components. Refer to AIRBAG, BELT TENSIONER AND BATTERY CUT-OUT UNITS, STORING, TRANSPORTING AND DISPOSING (PYROTECHNIC COMPONENTS) .
-- Disconnect the battery ground cable with the ignition turned on. Refer to BATTERY, DISCONNECTING AND CONNECTING .
-- Remove the headliner. Refer to HEADLINER, REMOVING AND INSTALLING .
-- Remove the bolt -2- for the head curtain airbag strap from the A-pillar.
-- Unclip the clips -1- from the A-pillar.
-- Disengage the clips -1, 2, and 3- head curtain airbag retaining tab clips from the body.
-- To do so, forcefully push the : VAS1978/17 with the >>spoon<< -arrow- all the way into the opening -A-, as shown in the illustration.
-- At the same time pull the left side of the clip out from the body.
-- Pull the : VAS1978/17 back out and pay attention that the clips on the loosed side do not re-engage.
-- Turn the : VAS1978/17 180° and repeat the procedure in the opening -B-.
Before handling pyrotechnic components (for example, disconnecting the connector), the person handling it must "discharge static electricity". For example, this can be done by briefly touching the door striker.
-- Pull out the connector lock -2- -arrow- and disconnect the connector -1-.
-- Remove the bolt -3- from the head curtain airbag.
-- Disengage the head curtain airbag -1- from the mount on the body -arrow B- and push rearward.
-- Disengage the rear head curtain airbag from the mount on the body -arrow A- and remove.
Installing
- Follow all safety precautions when working on pyrotechnic components. Refer to SAFETY PRECAUTIONS WHEN WORKING WITH PYROTECHNIC COMPONENTS .
- Always follow the head curtain airbag installation procedure.
- Before handling pyrotechnic components (for example, connecting a connector), the person handling it must "discharge static electricity". For example, this can be done by briefly touching the door striker.
-- Engage the head curtain airbag -1- at the rear in the mount on the body -arrow A- and push forward.
-- Engage the front head curtain airbag in the mount on the body -arrow B-.
-- Tighten the bolt -3-.
-- Connect the connector -1- on the head curtain airbag igniter.
-- Install the connector lock -2- in direction of -arrow-. While doing this, the connector is pushed into the head curtain airbag igniter and locks into place.
-- Install the clips for the head curtain airbag in the following sequence: -1, 2, and 3-. They must audibly clip into the body.
-- Make sure the "black line" -4- is visible over the entire length. This will ensure that the head curtain airbag is NOT twisted.
-- Fasten the bolt -2- for the head curtain airbag limiting strap to the A-pillar.
-- Clip the clips -1- onto the body.
If it was removed because of an accident, replace the clips.
Further installation is performed in reverse order of removal, while noting the following:
Make sure the connectors are installed all the way and engage audibly.
Make sure the wires do not get caught.
The ignition must be on when connecting the battery. If pyrotechnic components (for example, airbag, belt tensioner) are not repaired correctly, they may deploy unintentionally after connecting battery. There must not be anyone in the vehicle interior when connecting the battery.
-- Connect the battery ground cable with the ignition switched on. Refer to BATTERY, DISCONNECTING AND CONNECTING .
Repairing pyrotechnic components (for example the airbag and seat belt tensioner) incorrectly increases the risk of injuries due to unintentional deployments when the ignition is switched on.
- If the ignition is not switched on after the battery is reconnected - >>indicator lamps in the instrument cluster do not light up<< - the ignition (key/button) may only be switched on when the driver seat is positioned all the way back.
If the Airbag Indicator Lamp -K75- indicates a fault, check the DTC memory, erase it and check it again using the Vehicle Diagnostic Tester.