Accessory Control Display: Service and Repair

Removing And Installing Display And Operator Control Unit (PCM)







Removing Operator Control Unit (PCM)
Switch ignition off and remove ignition key.







1. Use a plastic spatula to carefully unclip the covering frame, starting from the bottom left and right.







2. "A" Unscrew the four fastening screws.







3. "B" Carefully pull out the PCM.

NOTE: The number of plugs can vary, depending on the vehicle equipment.

4. Press lock "arrow" of antenna plugs "a, b, c" and pull off antenna line.
5. Disconnect plugs "1, 2, 3, 4" in sequence "A" and "B".

Installing Operator Control Unit (PCM)







1. Insert plugs "4, 3, 2, 1" in this order until they are felt to engage.

NOTE: Plug "4" must be connected first.

2. Insert antenna plugs "a, b ,c" until they are felt to engage.







3. "B" Carefully slide the PCM into the housing in the dashboard as far as the stop. Make sure that the leads are not pinched.
4. "A" Fasten the PCM to the dashboard with the four fastening screws.







5. Fit the covering frame and press into place until it is felt to engage.

- Code the PCM.

Coding The Operator Control Unit (PCM)

NOTE:
- You can get the codes for the PCM from IPAS or from your importer by specifying the Vehicle Identification Number (VIN).
- During coding, it is essential to guarantee the power supply for the Porsche System Tester. In case of doubt, connect a charging unit to the vehicle battery.
- Instructions for the Porsche System Tester have a higher priority than the points listed here and are to be followed where descriptions deviate. Deviations may occur with later software versions.
- The procedure given here has been structured in general terms; different texts or additions may be displayed in the Porsche System Tester.

1. Connect and start the Porsche System Tester and switch on the ignition
2. Select "Cayenne" in the Vehicle type menu and confirm with the [->|] key.
3. Select PCM2/CDR23 in the Control unit selection an confirm with the [>>] key.
4. Select PCM2 in the PCM2/CDR23 function selection and confirm with the [>>] key.
5. Select Coding in the PCM2 function selection and confirm with the [>>] key.
6. Select PCM2 code in the PCM2 coding and confirm with the [>>] key.
7. Take the PCM2 code from IPAS and enter it in the form. Code with the [F8] key.

PCM2 control unit replacement
The PCM2 is provided in active production mode in new vehicles and as a spare part. Each time the vehicle is started, the stored VIN is compared with that in the instrument cluster. If no match is found, the device switches off after 30 seconds and the PROTECTED message appears in the display. The device is not operational.

If a match is found, the device is operational. No further checks are made while the device is connected to the vehicle electrical system.