Mercedes-Benz C-Class Coupe 2019 Operator's Manual page 227

When you receive a call, the 6
message will appear on the Head-up Display.
In audio mode, the station name or track will be
shown temporarily when the audio source is
being actively 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.
Incoming Call Switching the Head-up Display on/off
Press button 1.
#
Instrument Display and on-board computer 225