Combination Switch: Service and Repair

Steering Column Switches, Removing And Installing

CAUTION:
Before beginning repairs on the electrical system:
- Obtain the anti-theft radio security code.
- Switch off all electrical consumers.
- Switch ignition off and remove ignition key.
- Disconnect negative ( - ) battery terminal.
- When reconnecting battery terminals, observe all applicable Notes and torque specifications, as well as instructions on performing OBD program and electrical system function checks as specified.

WARNING: Special safety precautions apply to vehicles equipped with airbags. Refer to Body-Interior, Airbag: CAUTIONS and WARNINGS.

Removing
- Pull out steering column as far as possible and tilt downward.
- Center steering wheel in straight ahead position.
- Remove steering wheel with airbag unit.
- Remove driver's storage compartment.







- Remove screws -1- and remove handle for steering column adjustment -5-.
- Remove screws -2...4-.
- Detach upper and lower steering column trim sections.







- Disconnect electrical connections -1- and -2-.







- Confirm straight ahead position of steering column and front wheels.
- Yellow dot must be visible in hole -arrow 1- and two marks -arrows- must be aligned as illustrated.







- Secure spiral spring with slip ring in center position with adhesive strip -arrow-.







- Carefully release upper fasteners -arrows-.
- Carefully release lower fasteners and detach housing of spiral spring with slip ring and steering angle sensor from steering column switch.







- Loosen clamp bolt -arrow- until steering column switch can be removed.
- Disconnect electrical connections at steering column switch.

Installing
Install in reverse order of removal, noting the following:
- Slide housing of spiral spring with slip ring and steering angle sender onto steering column switch until all fasteners are heard to engage.
- Remove adhesive fastening strip or remove transportation seal in case new component is installed.







- Confirm steering angle sensor centered:
- Yellow dot must be visible in hole -arrow 1- and two marks -arrows- must be aligned.
- Install steering wheel and airbag unit.
- On vehicles with ABS/ESP Mark 20, perform OBD function 04 - Basic setting for steering angle sensor -G85-.
- On vehicles with ABS/ESP Mark 60, perform OBD function 04 - Basic setting for steering angle sensor -G85- and perform ESP test drive (basic setting 093)
See VAS 5051/5052 in operating mode "Guided Fault Finding".