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
You have put the wrong SmartKey in the ignition lock.
Use the correct SmartKey.
The SmartKey is in the ignition lock.
Remove the SmartKey.
The SmartKey nee ...
Problems with PARKTRONIC
Problem
Possible causes/consequences and
Solutions
Only the red segments in the PARKTRONIC warning displays
are lit.
You also hear a warning tone for approximately two ...
Limited Warranty
Follow the instructions in this
manual
about the proper operation of your vehicle
as well as about possible vehicle damage.
Damage to your vehicle that arises from
culpable contraventions ag ...
