Replacing Control Unit For Parking Brake

→ 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 and press [F12] to continue.
2. Select the vehicle type and start the PIDT.
3. Select the required control unit, e.g. Parking brake  in the overview  .
4. Select Maintenance/repairs  .
5. Select Control unit replacement  and press [F12].
6. Read data  and press [F12].
7. Press [F8] to start reading out data.
8. Check the chassis number and press [F12].
9. Switch off ignition.
10. Replace the control unit. →  466219 REMOVING AND INSTALLING CONTROL UNIT FOR PARKING BRAKE  
11. Switch on ignition. Select the Write data  menu (procedure described above), press [F12] and then press [F8] to start installing the data that was read out.
12. The System Tester displays the message Data has been written  . Press [F12] to continue.
13. Read out the fault memory  and erase it if necessary.
14. In the Coding/adaptation  menu, select Automatic coding  and press [F12].
15. Read out the fault memory  and erase it if necessary.
16. Select Calibration  in the Maintenance/repairs  menu and press [F12].
17. Follow the instructions on the Tester to select the required menu.
18. Carry out a function test on the parking brake.