The expansion valve atomizes the streaming refrigerant and
controls the flow quantity so that the vapor is gaseous only at
the evaporator outlet, depending on the heat transmission.
Note
Be sure to use the correct part number when replacing the
expansion valve. Refer to the Parts Catalo
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