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.
To enable operation of radio-controlled equipment, e.g. toll recording systems, areas on the windshield are permeable to radio waves 1. 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:
Headlamps fogged up on the inside
The headlamps may fog up on the inside if
there is high atmospheric humidity.
■ Switch on the lights and drive off.
The level of moisture diminishes,
depending on the length of the journey ...
Engine
...
Declarations of conformity
Vehicle components which receive
and/or transmit radio waves
USA: "The wireless devices of this vehicle
comply with Part 15 of the FCC Rules.
Operation is subject to the following two
cond ...