Coding the Operator Control Unit (PCM)

Coding Car Radio

NOTE:
- You can get the codes for the car radio 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 and confirm with the [>>] key.
4. Select CDR23 in the PCM2/CDR23 function selection and confirm with the [>>] key.
5. Select Coding in the CDR23 function selection and confirm with the [>>] key.
6. Select CDR23 code in the CDR23 coding and confirm with the [>>] key.
7. Take the CDR23 code from IPAS and enter it in the form. Code with the [F8] key.

CDR23 replacement
The CDR23 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.