Reading And Writing Values

→ Prior to disconnecting the control unit, switch off ignition and remove ignition key.

→ Ensure that the power supply is not interrupted during programming.

→ Connect a battery charger with a current rating of at least → Nominal value: 40 A  to the vehicle battery.

Information 

• If a new PCM/CDR is to be installed in a vehicle, the enabling code specified in the PIWIS information system must be used  .
• You can get the codes from the PIWIS Infosystem or from your importer by specifying the vehicle identification number  .
• During coding, it is essential to guarantee the power supply for the PIWIS Tester II 9818  . A battery charger with a current rating of at least 40 A must be connected to the vehicle battery  .
• The PIWIS Tester II 9818 instructions take precedence and in the event of a discrepancy, these are the instructions that must be followed. Deviations may occur with later software versions  .
• The procedure described here has been structured in general terms; different text may appear in the PIWIS Tester II 9818 or additional information/steps may be displayed or required  .

Information 

If the PCM unit is to be replaced with a new unit, the navigation data must be installed using a Software Update navigation CD/DVD  .

• To enable you to actually install the Software Update navigation data , you must read out the enabling code from the PIWIS information system. Additional enabling codes, e.g. customer has navigation system for Europe and Russia, or customer has already obtained navigation updates, must be queried by customer service personnel at the customer site  .
• The PCM maps software version can be read from the PIWIS information system (electrics/electronics information) 
• The required Software Update navigation CD/DVD must be ordered via PET  .
• The Software Update navigation CD/DVD must not be handed over to the customer. This CD/DVD can only be used with PIWIS Tester II 9818  .
• The Software Update navigation CD/DVD that corresponds to the relevant vehicle model year must always be used for the required PCM system, e.g. if the vehicle model year is 2010, the CD/DVD for 2010 must be used. This applies even if CDs/DVDs for 2011 are available  .
• The model year-based Software Update navigation CD/DVD must always be archived in the Porsche Centre  .
• Further changes/supplements to the Software Update navigation CD/DVD can also be obtained. These will have to be used later for older vehicles. For example, CDs/DVDs for 2011 are already available, but an error was found on the 2010 version, so the old CD/DVD for 2010 will have to be replaced with an updated CD/DVD for 2010. This process will be announced in a TI  .
• Current compatibility with Bluetooth telephones can be checked at http://www.porsche.com/germany/accessoriesandservices/porscheservice/vehicleinformation/docume 

Information 

If the PCM system is replaced, the trim panel on the "old"  PCM system must be unclipped and then clipped onto the "new"  PCM system.

Fig 1: Identifying PCM Trim Panel

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1. Connect the Porsche System Tester to the vehicle and start the System Tester.
2. Switch on ignition.
3. Select the required vehicle type.
4. Select the required control unit PCM 3.1  in the overview  .
5. Maintenance/repairs  must then be selected.
6. Control unit replacement  must now be selected. Then press [F12] to continue.
7. Read data  must be selected. Then press [F12] to continue.
8. Press [F8] to start reading out data.
9. Check the chassis number and press [F12] to continue.
10. Switch off ignition and replace control unit. → 911019 REMOVING AND INSTALLING PCM DISPLAY AND OPERATOR CONTROL UNIT .
11. Switch on ignition and switch to the menu (as described above).
12. Select Write data  and press [F12] to continue.
13. Press [F8] to start. The data that was read out is installed.
14. The System Tester displays the message Data has been written  . Press [F12] to continue.
15. Read out the fault memory  and erase it if necessary.
16. Select the Function enable  function in the Maintenance/repairs  menu and press [F12] to confirm your selection.
    1. 16.1. The PIWIS Tester displays all possible enabling codes.
    2. 16.2. Using the vehicle-specific codes from the PIWIS information system, click on the menus, enter the relevant enabling code  and press [F8] to start coding.
17. Exit the PCM 3.1  control unit. PCM 3.1 goes out of Service  mode.
18. Insert Navigation software update CD/DVD  into PCM 3.1 (see operating instructions).
19. Confirm the messages on the PCM unit, start the update  according to instructions and leave it running.
20. PCM then displays the message Update to version completed successfully  . Confirm this info on the touchscreen.
21. Check the audio, telephone, TV and navigation functions, depending on vehicle equipment.

    For equipment variant XM radio 

22. Drive the vehicle to a free area outside. Leave the engine switched on.
23. Adjust the radio to Station preview.
24. Contact SiriusXM OEM Call Centre at 1-800-852-9696.
25. Press button 2 for "Other enquiries" in the selection menu.
26. Provide the customer advisor with the radio ID/ESN of the "old" and "new" PCM system.
27. Once you have successfully registered the system, check that the PCM functions are working.

    All vehicles 

28. Read out the fault memory on the PCM 3.1  system.