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:
Important safety notes
WARNING
Do not turn off the engine before the vehicle
has come to a complete stop. With the engine
not running, there is no power assistance for
the brake and steering systems. In this case, ...
General notes
The roller sunblinds shield the vehicle interior from sunlight. The two roller
sunblinds can only be opened and closed together when the panorama roof with power
tilt/sliding panel is closed.
...
Overhead control panel
1 Switches the lefthand
reading lamp on/off
2 Switches the rear
interior lighting on/off
3 Switches the
automatic interior lighting
control on/off
4 Switches the front
interior lighti ...
