Steering Column: Service Precautions

Steering Column Switch Module (SCSM)

CAUTION:
Before beginning repairs on the electrical system:
- Obtain the anti-theft radio security code.
- Switch the ignition off.
- Disconnect the battery Ground (GND) strap.
- On vehicles equipped with Audi Telematics by OnStar, switch-off the emergency (backup) battery for the Telematic/Telephone Control Module prior to disconnecting vehicle battery.
- After reconnecting vehicle battery, re-code and check operation of anti-theft radio. Also check operation of clock and power windows.
- After reconnecting vehicle battery on vehicles equipped with Audi Telematics by OnStar, switch-on the emergency (backup) battery for the Telematic/Telephone Control Module.

- Switch ignition off and disconnect battery Ground (GND) strap.

General description
Steering column switch module (SCSM) is composed of return ring with slip ring, Steering Angle Sensor -G85-, steering column switch (signal switch, wiper switch, cruise control switch) and Steering Column Electronic Systems Control Module -J527-.

Use VAS5051 tester to check Steering Column Electronic Systems Control Module -J527-.