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:
Snow chains
For safety reasons, Mercedes-Benz
recommends that you only use snow chains
which have been specially approved for your
vehicle by Mercedes-Benz, or are of a
corresponding standard of quality.
...
Adjusting the four-way lumbar support
You can adjust the contour of the front seat
backrests individually to provide optimum
support for your back.
Adjusting the four-way lumbar support
1 To raise the backrest contour
2 To soften ...
Nuts & Bolts
Overall reliability for the current C-Class has been average. In crash tests
by the Insurance Institute for Highway Safety, the car earned the top score of
Good in front, side, rear and roof-crush ...