The return ring with the contact ring in the installed state must not be twisted. Remove the steering column switch module.

Installation
Installation in reverse order. Install the Airbag module and steering wheel. Calibrate the steering wheel angle sensor "G85". Use the diagnostic complex "VAS 5051B" or "VAS 5052" for this.
Select on the display: Chassis - Brake system (rep. group 01; 45) - 01. Systems with self-diagnosis - 03. Electronics of the brake system with ABS/ESP.
Select the desired function on the display: "L 04" ABS ASR ESP control unit, functions; "G85" steering wheel angle sensor calibration.
Conduct a test of the chassis and the entire ESP system.
The article is a reprint of material from AUDImanual
