Reading And Writing Values

Information 

All remote controls (keys) are required for teaching a DME, front-end electronics (front BCM), rear-end electronics (rear BCM), electronic steering lock (ELV) control unit or remote controls (keys) for example.

Remote controls (keys) that are not taught during this teaching procedure will no longer be recognized by the vehicle.

→ 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 

The PIWIS Tester II 9818  instructions take precedence since the description may be different with later Tester releases.

The procedure described here has been structured in general terms. Different text or additional information may appear in PIWIS Tester II 9818  .

1. Connect the Porsche System Tester to the vehicle and start the System Tester. Switch on ignition.
2. Select vehicle type.
3. Select the Rear-end electronics  control unit in the overview  .
4. Select Rear-end electronics  control unit.
5. Select Maintenance/repairs  .
6. Select Control unit replacement  and press [F12].
7. Select Read data  and press [F12].
8. Press [F8] to start reading out data.
9. Check the chassis number and press [F12].
10. Switch off ignition and replace control unit. → 578919 REMOVING AND INSTALLING CONTROL UNIT FOR REAR-END ELECTRONICS 
11. Go back to the Start page on the Tester.
12. To activate the control units, switch on the hazard warning lights.
13. Select the Online teaching function  menu on the Start page.
14. Select Vehicle  and press [>>]. Vehicle data will be read out.
15. The vehicle identification number (VIN) is displayed. Adapt the vehicle identification number if necessary.
16. Enter the repair order number and press [>>].
17. Enter the PPN user name and password and press [>>].
18. Login is performed.
19. The Tester displays the message Login successful  . Press [>>].
20. Follow the instructions on the Tester to select the required menu.
21. Once the teaching process is completed successfully, the Tester shows the following status, for example:

    2 keys taught

    Front BCM: taught

    ELV: taught

    Rear BCM: taught

    DME: taught

    Overall vehicle status: taught

22. [>>].
23. Press [EXIT] to exit the Online teaching function  and select the vehicle type  on the Start page.
24. Press [F7] Read all fault memories and erase if required  and delete all faults.
25. Select Rear-end electronics  using the cursor keys and press [>>].
26. Select Control unit replacement  with the cursor keys and press the [>>] key.

    Re-install the data that was read out by selecting Write values  .

27. Press [F7] Read all fault memories and erase if required  and delete all faults.
28. Function test: Lock, open and start the vehicle using all remote controls.
29. Read out fault memory.