Note:
Calibration of the level sensor should be performed when:
Any of the level sensors have been changed.
Work has been performed on the level sensor.
The control unit has been changed.
Test prerequisites:
The parking brake must be released.
The primary tank pressure must exceed 8bar.
The wheels must be blocked.
Ensure that there is no-one under the vehicle.
Procedure:
Adjust any fault codes.
Lower the trailing wheel axle.
Calibration shall be performed with the control box operating button in the position M1.
Block the wheels and release the parking brake.
Connect external air supply or start the engine and perform the calibration with the engine running.
Start the calibration procedure.
Bring the vehicle to the driving position. Press the confirm button.
Bring the vehicle to the upper position. Press the confirm button.
Bring the vehicle to the lower position. Press the confirm button.
Save the calibrated levels. Press the confirm button.
Exit the calibration procedure and turn ignition off for 10 seconds to store the calibration permanently.