Power Seat Control Module: Service and Repair

Removing And Installing Control Unit For Memory Seat Adjustment

Technical values







Removing control unit for memory seat adjustment







1. Release covers -Arrows A- and remove front seat rail cover caps -Arrows B-.







2. Release covers -Arrows C- and remove rear seat rail cover caps -Arrows D-.







3. Move front left seat back and up as far as possible. Move backrest fully forward.
4. Detach the front seat trim forwards -Arrow A-.







5. Fold the carpet sections forward and remove the two fastening screws -Arrows 1-.







6. Fold the seat back as far as possible. With the seat in its folded position, move the seat forward again using the fore-and-aft adjustment.
7. Release the connector -Arrow A- and pull it off -Arrow B-.







8. Release the holder -Arrows A- and remove the control unit -Arrow B-.







9. Release the connectors -Arrows A- and pull them off -Arrows B-.







Installing control unit for memory seat adjustment

1. Push in the connectors -Arrows A- until the locking tabs -B- are felt to engage.







2. Push control unit into rear locking tabs -Arrows A- ( -Arrow B- ).







3. Press control unit into holder -Arrow C- until the locking tabs -Arrows D- are felt to engage.







4. Push in the connector -Arrow A- until the locking tabs -Connector B- are felt to engage.







5. Move seat in folded position backwards and fold forward.







CAUTION: Risk of material damage to screw connections for seat and seat frame.
- The fastening screws for seat and seat frame are coated and must be replaced after being unscrewed.
- Before screwing in the new fastening screws, clean the thread holes with an M10 x 1.5 tap.

6. Screw in fastening screws -Arrows 1- and tighten to the specified tightening torque. Tightening torque: 45 Nm (33 ftlb.)

7. Fold back the carpet sections.
8. Clip in front seat trim -Arrow C-.







9. Push rear cover caps onto seat rails -Arrows A- and press down the covers -Arrows B- until these engage audibly.







INFORMATION: In vehicles with an electrically adjustable steering column, the control unit for memory seat adjustment must be re-initialised and locked. Refer to Removing and installing control unit for memory seat adjustment.

10. Push front cover caps onto seat rails -Arrows C- and press down the covers -Arrows D- until these engage audibly.







Initialising and locking control unit for memory seat adjustment

Initialising control unit for memory seat adjustment

1. Switch on ignition.
2. Use seat adjustment switch to tilt backrest completely forwards (as far as the stop).
3. Keep switch pressed in this position (approx. 5 seconds) until you hear a signal tone on the instrument cluster. The control unit is now initialised.

Locking control unit for memory seat adjustment

The Cayenne comes with either a large or small memory package, depending on the vehicle equipment. The corresponding memory package must therefore be locked in the control unit following initialisation.

CAUTION: Risk of material damage if control unit is not locked correctly.
- The control unit can be locked only once. Given this, the memory package that corresponds to the vehicle equipment must be selected before locking the control unit.
- If the small memory package is inadvertently locked on a vehicle with a large memory package, only the scope of the small memory package can be monitored (no electrical steering column or belt height adjustment monitoring.). This does not impair steering column or belt height adjustment.

INFORMATION:
- The control units for the driver's and front passenger's seat are identical.
- The control unit for the passenger's side is automatically coded correctly and does not need to be locked.
- The control units cannot be switched, e.g. a passenger control unit that has already been locked cannot be installed on the driver's side.
- It is not possible to switch driver's sides in vehicles with different memory packages.







1. Connect the Porsche System Tester and switch on the ignition.
2. Select Cayenne as the vehicle type and confirm with the >> key.
3. Use the Up and Down Arrow keys to select Driver's seat memory or Passenger's seat memory and confirm your selection by pressing >>.
4. Use the Up and Down Arrow keys to select Large memory package or Small memory package and confirm by pressing >>.
5. Select Lock in the function selection and confirm with the F8 key.
6. To complete the locking process, switch the ignition off and on and then erase the fault memory.