Impact Sensor: Service and Repair

Removing And Installing Airbag Sensor

Technical values

General warning notes

General warning notes for airbag

- Refer to Safety regulations for vehicles with airbag and belt tensioner.

Preliminary work

Preliminary work for lock support sensor

Removing front apron. Refer to Removing and installing front apron.

Preliminary work for centre sensor

Remove front seat. Refer to Removing and installing front seat.

Preliminary work for wheel arch sensor

Remove rear side trim panel. Refer to Removing and installing side trim panel for rear luggage compartment.

Removing airbag sensor

Removing sensor on lock support

INFORMATION:
- 6 sensors are used for the airbags in the Cayenne.
- The front two sensors are located on the lock support.
- The middle two sensors are located on the floorpan behind the front seats.
- The rear two sensors are located on the rear wheel housings.

CAUTION: Danger of injury and damage to property as a result of incorrect handling of airbag sensors.
- Risk of confusing the front, middle and rear sensors, since they do not differ in appearance.
- Always observe the safety regulations for handling airbag units. Refer to Safety regulations for vehicles with airbag and belt tensioner.
- 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.
- Before the connector is disconnected from the sensor, always wait for 1 minute before disconnecting the battery.

1. Push in lock -2- on plug for sensor -1-, until this perceptibly engages -arrow A-.

2. Release locking mechanism on the latch -2- -arrow B- and pull off plug from sensor -1- -arrow C-.

3. Unscrew the two fastening nuts -3- and remove the sensor.

Removing middle sensor

INFORMATION: Accessibility is limited. If the carpet is pulled back too far, it will tear at the edges.

1. Lift up the carpet towards the rear.

CAUTION: Danger of injury and damage to property as a result of incorrect handling of airbag sensors.
- Risk of confusing the front, middle and rear sensors, since they do not differ in appearance.
- Always observe the safety regulations for handling airbag units. Refer to Safety regulations for vehicles with airbag and belt tensioner.
- 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.
- Before the connector is disconnected from the sensor, always wait for 1 minute before disconnecting the battery.

2. Push in lock -2- on plug for sensor -1-, until this perceptibly engages -arrow A-.

3. Release locking mechanism on the latch -2- -arrow B- and pull off plug from sensor -1- -arrow C-.

4. Unscrew the two fastening screws -4- and remove the sensor.

Removing sensor on wheel housing

CAUTION: Danger of injury and damage to property as a result of incorrect handling of airbag sensors.
- Risk of confusing the front, middle and rear sensors, since they do not differ in appearance.
- Always observe the safety regulations for handling airbag units. Refer to Safety regulations for vehicles with airbag and belt tensioner.
- 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.
- Before the connector is disconnected from the sensor, always wait for 1 minute before disconnecting the battery.

1. Push in lock -2- on plug for sensor -1-, until this perceptibly engages -arrow A-.

2. Release locking mechanism on the latch -2- -arrow B- and pull off plug from sensor -1- -arrow C-.

3. Unscrew the two fastening screws -4- and remove the sensor.

Installing airbag sensor

Installing sensor on lock support

WARNING: Danger of injury caused by loose, safety-related bolts.
- Always replace fastening screws of the sensors after customer service and reworking.
- Never make alterations to the micro-encapsulated screws, which have a negative effect on the bond (e.g. using lubricant, loosening bolts and screwing them down again).

INFORMATION:
- 6 sensors are used for the airbags in the Cayenne.
- The front two sensors are located on the lock support.
- The middle two sensors are located on the floorpan behind the front seats.
- The rear two sensors are located on the rear wheel housings.

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).

- 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.

- The replacement date and mileage must be documented and the booklet must be stamped with the dealer's stamp.

INFORMATION: Make sure that the sensor is properly positioned.

1. Slide sensor onto the bolts on the lock support.

2. Screw on the fastening nuts -3- and tighten them. Tightening torque: 9 Nm (6.5 ftlb.).

3. Slide the connector onto the sensor until it clicks into place.

Installing middle sensor

WARNING: Danger of injury caused by loose, safety-related bolts.
- Always replace fastening screws of the sensors after customer service and reworking.
- Never make alterations to the micro-encapsulated screws, which have a negative effect on the bond (e.g. using lubricant, loosening bolts and screwing them down again).

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).

- 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.

2. Slide the connector onto the sensor until it clicks into place.

3. Fold carpet forwards.

Installing sensor on wheel housing

WARNING: Danger of injury caused by loose, safety-related bolts.
- Always replace fastening screws of the sensors after customer service and reworking.
- Never make alterations to the micro-encapsulated screws, which have a negative effect on the bond (e.g. using lubricant, loosening bolts and screwing them down again).

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).

- 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.

2. Slide the connector onto the sensor until it clicks into place.

Subsequent work

Subsequent work for lock support sensor

1. Install front apron. Refer to Removing and installing front apron.
2. Carry out work instruction after disconnecting the battery.
3. Read out the airbag fault memory with the Porsche System Tester.

Subsequent work on centre sensor

1. Install front seat. Refer to Removing and installing front seat.
2. Carry out work instruction after disconnecting the battery.
3. Read out the airbag fault memory with the Porsche System Tester.

Subsequent work for wheel arch sensor

1. Install rear side trim panel. Refer to Removing and installing side trim panel for rear luggage compartment.
2. Carry out work instruction after disconnecting the battery.
3. Read out the airbag fault memory with the Porsche System Tester.