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:
Reporting malfunctions relevant to safety
For the USA only:
The following text is reproduced as required
of all manufacturers according to Title 49,
Code of U.S. Federal Regulations, Part 575
pursuant to the National Traffic and Moto ...
Smaller tank, same range
Because the new Mercedes CLS models consume significantly less fuel, it has
been possible to reduce the filling volume of the fuel tank in the four and
six-cylinder models to 59 litres. The 80-lit ...
Preparing the vehicle
Your vehicle may be equipped with a
"Minispare" emergency spare wheel or
MOExtended tires (tires with run-flat
properties).
Vehicle preparation is not necessary on
vehicles with MO ...
