Mercedes-Benz E-Class convertible Operator's Manual page 213

In audio mode, the station name or track is tem‐
porarily shown when the active audio source is
being operated.
System limitations
The visibility is influenced by the following condi‐
tions:
Seat position
R
The positioning of the display image
R
Light conditions
R
Wet roads
R
Objects on the display cover
R
Polarization in sunglasses
R
% In extreme sunlight, sections of the display
may appear washed out. You can correct this
by switching the Head-up Display off and on
again.
Switching the Head-up Display on/off
Press button 1.
#
Instrument Display and on-board computer 211