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:
SmartKey
Display messages
Possible causes/consequences and •► Solutions
Key Does Not
Belong to Vehicle
You have put the wrong SmartKey in the ignition lock.
•► Use the correct ...
Power washers
WARNING
Do not use power washers with circular-jet nozzles (dirt grinders) to clean your
vehicle, in particular the tires. You could otherwise damage the tires and cause
an accident.
Alw ...
Instrument cluster
Selecting the unit of measurement for
distance
The Display Unit Speed-/Odometer:
function allows you to choose whether
certain displays appear in kilometers or miles.
The selected unit of measu ...
