Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSPORSCHE2005CAYENNE TURBO (9PA) V8-4.5L TURBOREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINTRANSFER CASECONTROL MODULESERVICE AND REPAIRREMOVING AND INSTALLING TRANSFER BOX CONTROL MODULE
2005 Porsche Cayenne Turbo (9PA) V8-4.5L Turbo
Removing and Installing Transfer Box Control Module
2005 Porsche Cayenne Turbo (9PA) V8-4.5L TurboSECTION Removing and Installing Transfer Box Control Module
391319 Removing and installing transfer box control module
Removing transfer box control module

Note:
^ The control unit is located under the right front seat.
1. The ignition key must be removed before removing the connector from the control unit.
2. Move right front seat all the way back and up.
3. For vehicles with a telephone, remove the telephone control unit.
4. Unclip right front seat trim and remove drawer.

5. Unscrew the fastening screw for the support.

Note:
^ Only for vehicles with telephone
6. Unscrew the three fastening nuts and remove support for telephone control unit.
7. Move seat all the way forward and remove ignition key.

8. Release the two connectors -A- and pull them off -B-.
9. Remove the support with the two control units -C-.

10. Press the two locking mechanisms outwards -A- and remove the control unit -B-.
Installing transfer box control module


1. Insert the control unit -A- until the locking tabs -B- are felt to engage.

2. Insert the two connectors -A- and press in the locking mechanism -B- until it is felt to engage.
3. Place the support with the two control units in the installation position -C-.

4. Move seat all the way back and tighten the support with the fastening screw.

Note:
^ Only for vehicles with telephone
5. Position the support for the telephone control unit and screw down using the three fastening nuts.
6. For vehicles with a telephone, install the telephone control unit.
7. Clip in right front seat trim and install drawer.
Removing transfer box control module
Note: The Control Unit Is Located Unit The Right Front Seat.:
Note:
^ The control unit is located under the right front seat.
1. The ignition key must be removed before removing the connector from the control unit.
2. Move right front seat all the way back and up.
3. For vehicles with a telephone, remove the telephone control unit.
4. Unclip right front seat trim and remove drawer.
5. Unscrew the fastening screw for the support.
Note:
^ Only for vehicles with telephone
6. Unscrew the three fastening nuts and remove support for telephone control unit.
7. Move seat all the way forward and remove ignition key.
8. Release the two connectors -A- and pull them off -B-.
9. Remove the support with the two control units -C-.
10. Press the two locking mechanisms outwards -A- and remove the control unit -B-.
Installing transfer box control module
1. Insert the control unit -A- until the locking tabs -B- are felt to engage.
2. Insert the two connectors -A- and press in the locking mechanism -B- until it is felt to engage.
3. Place the support with the two control units in the installation position -C-.
4. Move seat all the way back and tighten the support with the fastening screw.
Note:
^ Only for vehicles with telephone
5. Position the support for the telephone control unit and screw down using the three fastening nuts.
6. For vehicles with a telephone, install the telephone control unit.
7. Clip in right front seat trim and install drawer.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.