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Home >> Porsche >> 2017 >> Macan GTS >> Repair and Diagnosis >> External Pages >> Different car >> Section 107 (46 - Brakes - Brake Mechanics -- PANAMERA (970)) >> WM 466255 Replacing Control Unit For Electric Parking Brake (Except PANAMERA Executive, PANAMERA GTS, PANAMERA Turbo S, PANAMERA 4 Executive, PANAMERA Platinum Ed., PANAMERA 4 Platinum Ed.) >> Reading And Writing Values

Reading And Writing Values

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2016 Porsche Panamera, 2015 Porsche Panamera, 2014 Porsche Panamera, 2013 Porsche Panamera, and 2012 Porsche Panamera. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Voltage drop
  • Risk of irreparable damage to control unit
  • Risk of damage to control unit
  • Fault entries in the control unit
  • Coding in the control unit is aborted
  • Malfunctions in control unit, even during programming

→ 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 PIWIS Tester to the vehicle and start it. Switch on ignition and press [F12] to continue.
  2. Select the vehicle type and start the diagnostic application.
  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 and replace control unit. → 466219 REMOVING AND INSTALLING CONTROL UNIT FOR ELECTRIC PARKING BRAKE .
  10. 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.
  11. The Tester displays the message Data has been written  . Press [F12] to continue.
  12. Switch to the Actual values, input signals  menu.
  13. Select All  and press [F12].
  14. Select values for Actuator position status right and left  and press [F12].
  15. The status must be released  for both actuators.

    If the released  status is not displayed, then proceed as follows:

    1. 15.1. Select Drive links/Tests  and Move to installation position  in the menu and press [F12].
    2. 15.2. Press [F8] to start the function and follow the instructions on the Tester.
  16. Select Check basic setting of parking-brake  in the Maintenance/repairs  menu and press [F12].
  17. Follow the instructions on the Tester and press [F12].
  18. Complete the following steps on vehicles with steel brakes. Do not perform the Bedding in  function on vehicles with PCCB.
    1. 18.1. Select Bedding in  and press [F12].
    2. 18.2. Follow the instructions on the Tester and press [F8] to start the function.
    3. 18.3. Follow the instructions on the Tester.
  19. Select Calibration  and press [F12].
    1. 19.1. Follow the instructions on the Tester and press [F12] to continue.
    2. 19.2. Start the calibration process  by pressing [F8].
    3. 19.3. Follow the instructions on the Tester.
  20. Read out the fault memory  and erase it if necessary. Return to the overview  of all control units.
  21. Check the function of the electric parking brake by actuating the lever. The LED in the button may start flashing after the first function test.
    1. 21.1. If the LED in the button starts flashing after the first function test:
      1. 21.1.1. Perform another function test and check the function of the electric parking brake by actuating the lever.
  22. Perform a test drive, check the function of the electric parking brake by actuating the lever and read out the fault memory.
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