69511900 Removing and installing airbag sensor
WM 695119 Removing and installing airbag sensor
Tools
Technical values
Preliminary work
Preliminary work for front airbag sensor
1. Disconnect battery. => Work instructions after disconnecting the battery
2. Remove front apron. -> 631519 Removing and installing front apron - section on "Removing" 631519 Removing and installing front spoiler
Preliminary work for centre airbag sensor
1. Disconnect battery. => Work instructions after disconnecting the battery
2. Remove front seat. => Removing and installing front seat
3. Remove the rear side-panel lining.
4. Remove sill. -> 680519 Removing and installing inner sill
5. Undo screw fastening seat belt to the body. -> 691119 Removing and installing front three-point belt - removing 691119 Removing and installing front three-point belt
General warning notes
Safety instructions for airbag sensor
CAUTION
Incorrect triggering of airbag modules.
- Danger of injury and material damage if airbag sensors are not handled correctly!
-> Remove ignition key. Disconnect battery. Route or isolate ground strap so that all contact with a ground carrier (e.g. body, seat frame) is avoided.
-> Always wait one minute after disconnecting the battery before disconnecting the connector from the sensor.
-> The airbag sensor must not be removed with the plug plugged in!
-> The airbag sensors cannot be interchanged. Install the sensor listed in the Spare Parts Catalogue (PET).
-> Always replace fastening nuts and bolts of sensors after customer service and reworking.
-> Never make alterations to the micro-encapsulated nuts and bolts which have a negative effect on the bond (e.g. using lubricant, loosening bolts and screwing them down again).
Tools and materials
Tools
Removal tool, universal NR.21
Removing airbag sensor
Removing sensor for front airbag
Installation locations, illustrated on 997
1. Release electric connector -1- -A- and remove from sensor.
Disconnecting plug connection
2. Unscrew the two fastening nuts -2- and remove the sensor.
Mounting for removal of sensor
Removing sensor for centre airbag
1. Disengage floor covering at the support and lay it in the vehicle interior.
2. Unlock locating peg -1- using the removal tool
Unlocking locating peg using the removal tool
3. Unscrew fastening screws -2- and nuts -3- and carefully pull the support up and out of the retaining points.
Removing support
Incorrect triggering of airbag modules.
4. Unscrew the two fastening nuts -2-.
Removing airbag sensor
5. Unlock electrical connector -A- and remove sensor.
Removing connector for airbag sensor
Installing airbag sensor
Installing sensor for front airbag
Information
If a new component (e.g. sensor, airbag control unit, airbag unit) of the airbag system has to be installed, the new component will be supplied with a barcode sticker (tear-off label).
Sample tear-off label shown >> airbag sensor
- Tear off the tear-off label -2- on the new component -1- and stick it under the heading Proof of airbag system check/component replacement in the Guarantee and Maintenance booklet.
Tear-off label
- The replacement date and mileage must be documented and the booklet must be stamped with the dealer's stamp.
1. Position sensor on retaining bracket and screw it down with the fastening nuts -2-. => M6: 8 Nm (6 ftlb.)+/-1 Nm (+/-0.5 ftlb.)
Mounting for installation of sensor
2. Push on the electric connector -1- and lock it.
Installing sensor plug connection
Installing sensor for centre airbag
Incorrect triggering of airbag modules.
Information
If a new component (e.g. sensor, airbag control unit, airbag unit) of the airbag system has to be installed, the new component will be supplied with a barcode sticker (tear-off label).
Sample tear-off label shown >> airbag sensor
- Tear off the tear-off label -2- on the new component -1- and stick it under the heading Proof of airbag system check/component replacement in the Guarantee and Maintenance booklet.
Tear-off label
- The replacement date and mileage must be documented and the booklet must be stamped with the dealer's stamp.
1. Position sensor on the body and screw it down with the fastening nuts -2-. => M6: 8 Nm (6 ftlb.)+/-1 Nm (+/-0.5 ftlb.)
Mounting for installation of sensor
2. Push on the electric connector until it clicks into place.
Installing sensor plug connection
3. Position the support and engage in lower side member.
Engaging support
4. Clip in locating peg -1- and check it is seated correctly.
Installing support
5. Tighten the plastic fastening nuts -3-.
6. Screw in fastening screws -2-. => Final tightening: 7.2 Nm (5.5 ftlb.)
7. Lay the carpet over the support and engage it.
Subsequent work
Work in wake of front airbag sensor
1. Install front apron. -> 631519 Removing and installing front apron - section on "Installing" 631519 Removing and installing front spoiler
2. Connect the battery. => Work instructions after disconnecting the battery
3. Using the PIWIS Tester 97180, read out the fault memory and erase if required. If further faults exist, proceed in accordance with airbag diagnosis fault code.
Work in wake of centre airbag sensor
1. Screw in screw fastening seat belt to the body. -> 691119 Removing and installing front three-point belt - installing 691119 Removing and installing front three-point belt
2. Insert sill. -> 680519 Removing and installing inner sill
3. Install the rear side-panel lining.
4. Installing front seat. => Removing and installing front seat
5. Connect the battery. => Work instructions after disconnecting the battery
6. Using the PIWIS Tester 97180, read out the fault memory and erase if required. If further faults exist, proceed in accordance with airbag diagnosis fault code.