Accessories and Optional Equipment: Service and Repair

Removing and installing display and operator control unit (PCM)

NOTE:
- As of model year '01, the tolerance of the speed display has been restricted. This was achieved by changing the software ("K-number") on the instrument cluster and PCM control module. The "K-number" varies depending on vehicle type and country equipment
- The reason is as follows: different displays of the total mileage and the fuel consumption/average consumption in the instrument cluster and the PCM control module.
- Therefore, in the case of repairs, the K-number in the PCM control module must be corrected with the Porsche System Tester 2 (PST2) after the installation of a new PCM control module or a new instrument cluster in vehicles as of model year '01. > If this correction is not carried out, conflicting values for the total mileage and fuel consumption/average consumption will be displayed on the instrument cluster and the PCM control module when in driving mode.

PROCEDURE for changing the "K-number" on PCM control module (as of PST2 Software 13.0):

1. Connect the PST2 to the diagnostic socket; switch on the PST2 and the ignition.
2. When the PST2 is ready, select vehicle type and start the automatic control module search with the key [>>].
3. In the menu "Control units", select "Instrument cluster"
4. In the function selection, select "Synchronise K-number".
5. Start the function using the key [>>].
6. After the function has been successfully performed in the instrument cluster, the message "K-number synchronised" or the message "K-number updated" appears in the Tester display. Subsequently, it is automatically connected to the PCM. The message "Connecting to PCM" appears.
7. After the function has been successfully performed in the PCM, the message "K-number synchronised" or the message "K- number updated" appears in the Tester display. Subsequently, it is automatically reconnected to the instrument cluster. The message "Connecting to instrument cluster" appears.
8. Then the message "Function successfully completed" appears.
9. Return to the Start menu with the button [ESC], switch off the PST2 and disconnect from the diagnostic socket.

Removing display and operator control unit (PCM)







1. Unclip the -switch covers- from below and let them dangle from the electric leads.







2. Press together both spring clamps on the display and operator control unit and carefully pull out.
3. Disconnect electrical plug connections from the display and operator control unit.

Installing display and operator control unit (PCM)

NOTE: After installation of a new display and operator control unit, the system must be activated with the Porsche System Tester 2!

1. Engage the electrical plug connections and carefully lay the electrical leads (do not pinch).
2. Connect and switch on the Porsche System Tester 2.

Connecting and switching on the Porsche System Tester 2

1. Switch ignition on.
2. Switch on PCM by pressing the volume control (display remains dark).
3. Establish communication with the Porsche System Tester 2 and select PCM.
4. Select Modify coding.
5. Select PCM active.
6. Confirm PCM active with the F8 key.

Device code input

The display and operator control unit is protected against theft by a device code. Furthermore, a code also protects the navigation unit against unauthorised users.

NOTE:
- Both codes must be input when the system is commissioned!
- Input the device code for the display and operator control unit first!
- Only the navigation code has to be input again if the navigation unit is exchanged!