Programming and Relearning
WM 430115 Calibrating the levelling system
Checking
Testing
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.
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. Select ]]Levelling system/PASM[[]]Maintenance/repairs[[ Height sensor system calibration in the Porsche System Tester control unit overview.
Notes
Information
- Prior to calibration, the Normal Level must be adjusted! -> 43 Calibration - requirements for performing calibration -> 4X00IN Lifting the vehicle - section on "Information" Service and Repair
- Check that the tyre pressure has been set according to the respective tyre specifications. -> 43 Calibration - wheels and tyres
- The fault memory must be cleared before starting calibration.
- The vehicle is raised and lowered during the height sensor system component test.
- Do not interrupt calibration! If calibration is interrupted, the fault code 000286 "Customer service mode not complete" is entered. A warning appears in the instrument cluster. If this happens, perform calibration again.
- Select ]]Height sensor system component test[[ before starting calibration. Select ]]Levelling system/PASM[[]]Maintenance/repairs[[ Height sensor system component test in the control unit overview using the Porsche System Tester.
- Switch on the air extraction system while the engine is running.
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 two axle supports on the front and rear axle, both on the right and left. Also follow the instructions under - Conditions for carrying out calibration -> 430115 Calibration - section on "Information"
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 - centre of wheel to lower edge of wing (example shown)
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 - centre of wheel to lower edge of wing (example shown)
Information
Conditions
Calibration can only be carried out while vehicle is stationary.
The vehicle must stand "floating" on the measuring platform to avoid straining the axles.
The electric parking brake must be applied.
Close the doors and tailgate.
Select ]]Height sensor system component test[[ before starting calibration.
The vehicle rises first and then moves to normal level during the height sensor system component test.
1. Connect the Porsche System Tester. Select ]]Levelling system/PASM[[]]Maintenance/repairs[[ Height sensor system component test in the control unit overview.
2. After Normal Level has been reached, determine the actual value of the axle heights at the measuring points. 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.
The measured values for the vehicle height must correspond to the values specified under Adjustment values for suspension alignment.
If an implausible value is entered (actual value is not accepted), check the height sensors for mechanical damage (bent linkage, bent holders).
Then measure the height again and enter the value. Follow the instructions on the Tester.