The purpose of this repair manual is to provide service
advisors and technicians with the basic knowledge needed to
ensure professional and competent procedures.
Note
Only the careful study of this documentation, practical
implementation of the information contained, training on A/C
syst
The button is integrated in the steering wheel for easier
operation of infotainment, telephone and the navigation system.
On Tiptronic, rocker switches are also installed on the left and
right.
The Multifunction Steering Wheel Control Module -J453- (in
the right button) reads out the information