Infrared reflective windshield
The infrared reflecting glass prevents the vehicle interior from becoming too hot. It also blocks radio waves up into the gigahertz range.

In order to operate radio-controlled equipment, e.g. toll recording systems, areas 1 on the windshield are permeable to radio waves. In these areas, you can install radio-controlled systems.
These areas can best be seen from outside the vehicle by observing the light reflected off the windshield.
See also:
Problems with the rear window
defroster
The rear window defroster has deactivated
itself prematurely or cannot be activated.
- Switch off any consumers that are not
required, e.g. reading lamps or interior
lighting.
When the battery ...
Making adjustments in 5 mph (Canada: 10 km/h) increments
Briefly press the cruise control lever beyond the pressure point, up 1 for a
higher speed or down 2 for a lower speed. The last speed stored is increased or
reduced. ...
KEYLESS-GO
General information
Vehicles with KEYLESS-GO are equipped with
a SmartKey featuring an integrated KEYLESS-GO
function and a detachable Start/Stop
button.
The Start/Stop button must be inserted ...
