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:
Closing the DEF filler cap and fuel filler
flap
– Place DEF filler cap 2 on the filler neck and
turn it clockwise.
– To close the fuel filler flap, press it in the
direction of arrow 1.
– Drive at a speed above 10 mph (16 km/h).
The Check ...
A unique combination of driver-assistance systems
The 2011 CL-Class further enforces its position as an automotive masterwork
and a technology platform with the most advanced assistance and protection
systems. These highly perceptive assistants c ...
Drive sensibly – save fuel
Observe the following tips to save fuel:
The tires should always be inflated
to the recommended tire pressure.
Remove unnecessary loads.
Remove roof racks when they are not
needed.
Warm up ...
