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:
Parking
WARNING
PARKTRONIC and Active Parking Assist are
merely parking aids and may not detect all
obstacles. They do not relieve you of the
responsibility of paying attention.
You are always respon ...
On-board diagnostics interface
WARNING
If you connect equipment to the on-board
diagnostics interface, it can affect the
operation of the vehicle systems. This can
impair the operating safety of your vehicle
while drivin ...
Deactivating/activating PARKTRONIC
1 Indicator lamp
2 To deactivate/activate PARKTRONIC
If indicator lamp 1 lights up, PARKTRONIC is
deactivated. Active Park Assist is then also
deactivated.
PARKTRONIC is automatically ac ...
