This function is used to zero-compensate the values from the steering angle sensor.
Note:
Before the steering wheel angle sensor is disconnected/replaced, a de-calibration must be performed. Even if only a calibration is performed a de-calibration must first be performed. During calibration the ignition must not be switched off. The calibration must be performed in three consecutive steps.
Calibration must be done if:
The ABS control unit has been replaced.
The steering angle sensor has been replaced.
The steering column has been replaced.
Bodywork that affects the wheel alignment has been done.
The steering angle sensor has been disconnected.
An error code that requires zero compensation is stored in the ABS control unit.
Decalibration has been performed.
Test prerequisites:
The battery voltage should be above 12V.
Ignition on, engine off.
Procedure:
De-calibration:
Choose the function: Steering angle decalibration.
A dialog box presents: Operation succeeded/ failed.
Press OK.
Calibration:
Check that the steering wheel is in the correct position when the front wheels are straight ahead.
Drive the car straight ahead on a flat surface to check that the car does not pull to one side when the steering wheel is held in the straight ahead position.
Stop the car and make sure that the front wheels and the steering wheel are aligned.
Choose the function: Calibration of steering angle sensor.
A dialog box presents: Operation succeeded/ failed.
Press OK.
Erase the stored fault code.
Test drive and check that the value for the steering angle in the data list is within ±5°.