Programming and Relearning
WM 430115 Calibrating the levelling system
Checking
Calibration must be performed if one or more of the following situations apply:
- Control unit was replaced.
- Level sensors were replaced.
- Vehicle lies to one side after being raised. Lifting platform mode may still be activated. If this is the case, a test drive must be carried out with the vehicle (this deactivates lifting platform mode). And the vehicle automatically adjusts to the correct level. Only calibrate the levelling system if this does not work.
The level sensors are calibrated by determining a correction value (corresponding to the actual height of the vehicle) and storing it permanently in the control unit.
Notes on calibration
The nominal values for the nominal heights of the level sensors are stored in the control unit (F1 - Help). The actual values of the respective axle heights, front left, front right, rear left, rear right, have to be measured manually and then entered using the Porsche System Tester. The actual values must be measured on the front and rear axle, both on the left and right. -> 430115 Calibration - section on "Information" - Height measurement point on rear axle; - Height measurement point on front axle
See also: -> 430115 Calibration - section on "Information"- Conditions for carrying out calibration
Height measurement point on rear axle
The distance (middle of wheel) between the lower edge of the wing to the middle of the axle -X- is measured.
Dimension X = middle of wheel to lower edge of wing
Height measurement point on front axle
The distance (middle of wheel) between the lower edge of the wing to the middle of the axle -X- is measured.
Dimension X = middle of wheel to lower edge of wing (rear axle shown)
Conditions for carrying out calibration
Information
- Calibration can only be carried out while the vehicle is stationary.
- The vehicle must stand "floating" on the measuring platform to avoid straining the axles.
- Calibration is also required for the variants with "steel springs - PASM". The headlight beam adjustment (HBA) sensors are also calibrated.
- Prior to calibration, the vehicle must be set to Normal Level!
- Ensure that tyre pressures have been adjusted to the respective tyre specifications. (>>4405IN Wheels and tyres)
- The vehicle is raised and lowered during the height sensor system component test and then adjusts to the correct level!
- The measured values for the vehicle height must correspond approximately to the values specified under Adjustment values for suspension alignment. An implausible value will not be accepted. For the current comparative values for the vehicle height, please refer to the adjustment values for suspension alignment -> 4495TW Adjustment values for suspension alignment 4495TW Adjustment values for suspension alignment
- Do not interrupt calibration! If calibration is interrupted, the fault code 000286 "Customer service mode not complete" remains stored and is active! A warning appears in the instrument cluster. Select [[]]Completion of height sensor calibration[[ in the Drive links/Tests menu. Erase the fault memory and perform calibration again!
Calibration procedure
Adhere strictly to the information provided under "Conditions for carrying out calibration"!
Always carry out the "Calibration procedure" step-by-step until calibration is complete!
1. Adjust the vehicle to Normal Level.
2. Apply the electric parking brake.
3. Close the doors and tailgate.
4. 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.
5. 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.
6. Perform height sensor calibration.
Select ]]Maintenance/repairs[[]]Height sensor calibration[[ in the menu.
Follow the instructions on the Porsche System Tester.
6.1. Determine the actual axle height values.
Determine the actual values of the axle heights at the measuring points and enter these values in the Porsche System Tester.
Press "Enter" to confirm!
Save the actual values! Do not go into the fault memory afterwards.
6.2. If an implausible value is entered (actual value is not accepted), measure the height again and enter the value.
Follow the instructions on the Porsche System Tester.
Do not go into the fault memory - continue with Step 7!
Otherwise, calibration will be aborted (see section on "Conditions for carrying out calibration", last condition!).
7. Completion of height sensor calibration must now be selected.
Select ]]Drive links/Tests[[]]Completion of height sensor calibration[[.
Follow the instructions on the Porsche System Tester.
When ]]Completion of height sensor calibration[[ is completed successfully, ]]Result[[ ]]Function completed[[ is displayed!
8. Erase the fault memory.
Select ]]Fault memory[[ ]]Erase fault memory[[.
Follow the instructions on the Porsche System Tester.
Levelling system calibration is complete!
When calibration is complete, the vehicle does not adjust automatically to Normal Level. The height values can only be checked after test-driving the vehicle.