Calibration Procedure
- 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 90 A to the vehicle battery.
- Fit measured-value pickup > VAS 6918 - Quick-Clamping Unit on the relevant wheel.
- > 9818 - PIWIS Tester II must be connected to the vehicle before starting the Tester. Switch on ignition using original remote control (hand-held transmitter).
- Apply electric parking brake.
- Close the doors and tailgate.
- 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.
- 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.
- Perform height sensor calibration.
Select >> Maintenance/repairs << >> Height sensor calibration << in the menu.
Follow the instructions on the Porsche System Tester.
- 7.1 Determine the actual value for the height of the vehicle body at the measuring points.
- 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 .
- 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 = vehicle body height
375 mm + 32.5 mm = 407.5 mm
- 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".
- 7.1 Determine the actual value for the height of the vehicle body at the measuring points.
- 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!
- 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!