Coding And Calibrating Control Unit

→ 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. Switch off ignition and replace control unit. → 466219 REMOVING AND INSTALLING CONTROL UNIT FOR ELECTRIC PARKING BRAKE .
2. Connect the Porsche System Tester to the vehicle and start the System Tester. Switch on ignition.
3. Select the vehicle type and start the diagnostic application.
4. Select Parking brake  in the control unit overview  .
5. Codings/adaptations  must now be selected.
6. Automatic coding  must then be selected. Press [F12] to start coding.
7. The Tester displays the message Coding has been completed successfully  . Press [F12] to continue.
8. Drive links/checks  must be selected.
9. Move to installation position  and press [F12] to continue.
10. Press [F8] to start the function and follow the instructions on the Tester.
11. Select Check parking brake basic setting  in the Maintenance/repairs  menu and press [F12] to continue.
12. Follow the instructions on the Tester and press [F12] to continue.
13. Complete the following steps on vehicles with steel brakes. Do not perform the Bedding in  function on vehicles with PCCB.
    1. 13.1. Select the Bedding in  function, then press [F12].
    2. 13.2. Follow the instructions on the Tester and press [F8] to start the function.
    3. 13.3. Follow the instructions on the Tester.
14. Select Calibrate parking brake distance sensor  function and press [F12] to continue.
    1. 14.1. Follow the instructions on the Tester and press [F12] to continue.
    2. 14.2. Start the calibration process  by pressing [F8].
    3. 14.3. Follow the instructions on the Tester.
15. Read out the fault memory  and erase it if necessary. Return to the overview  of all control units.
16. Check electric parking brake operation by pressing the parking brake operating button. The LED in the button may flash after the first function test.
    1. 16.1. If the LED in the button starts flashing after the first function test:
       1. 16.1.1. Perform a further function test. Check electric parking brake operation by actuating the lever.
17. Perform a test drive, check the function of the electric parking brake by actuating the lever and read out the fault memory.