Calibration Procedure

→ 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.

1. Fit measured-value pickup Quick clamping device WE 1621  on the relevant wheel.
2. PIWIS Tester II 9818  must be connected to the vehicle before starting the Tester. Switch on ignition using original remote control (hand-held transmitter).
3. Apply electric parking brake.
4. Close the doors and tailgate.
5. Erase the fault memory  .

   To do this, connect the Porsche System Tester. Select >>Levelling system/PASM<< >>Fault memory<< >>Erase fault memory<< in the control unit overview.

   Follow the instructions on the Porsche System Tester.

6. Perform Height sensor system component test  .

   Select >>Maintenance/repairs<< >>Height sensor system component test<< in the menu.

   Follow the instructions on the Porsche System Tester.

7. Perform height sensor calibration  .

   Select >>Maintenance/repairs<< >>Height sensor calibration<< in the menu.

   Follow the instructions on the Porsche System Tester.

   1. 7.1. Determine the actual value for the height of the vehicle body at the measuring points.
      1. 7.1.1. When determining the height of the vehicle body, the height is measured from the lower edge of the wing to the upper edge of the measured-value pickup, dimension X  .
      2. 7.1.2. Then add the radius  of the measured-value pickup 32.5 mm  to this measured dimension X.

         Sample calculation: 

         Measured dimension X = 375 mm; measured-value pickup radius = 32.5 mm

         X  + measured-value pickup radius  = height of vehicle body 

         375 mm + 32.5 mm = 407.5 mm

   2. 7.2. Enter the determined values in the Porsche System Tester.

      If an implausible value is entered (actual value is not accepted by Porsche System Tester), please refer to the information under: "PROCEDURE: MEASURED ACTUAL VALUE IS NOT ACCEPTED ".

8. Complete the diagnostic session (only for steel springs) 

   Select >>Drive links/checks<< >>Completion of height sensor calibration<< in the menu.

   Follow the instructions on the Porsche System Tester.

   When calibration is completed successfully, >>Result  << >>Function completed  << is displayed!

9. Erase the fault memory  .

   Select >>Fault memory<< >>Erase fault memory<< in the menu.

   Follow the instructions on the Porsche System Tester.

   Levelling system calibration is complete!