The fuel supply is interrupted to protect the
engine when the red band is reached.
Outside temperature display
You should pay special attention to road condi-
tions when temperatures are around freezing
point.
Bear in mind that the outside temperature dis-
play indicates the measured air temperature
and not the road surface temperature.
The outside temperature display is in the multi-
function display (
Y
page 283).
A change in the outside temperature is shown in
the multifunction display after a delay.
Coolant temperature gauge
G
WARNING
If you open the bonnet while the engine is
overheating or while there is a fire in the
engine compartment, you could come into
contact with hot gases or other leaking ser-
vice products. There is a danger of injury.
Allow an overheating engine to cool down
before opening the bonnet. If there is a fire in
the engine compartment, leave the bonnet
closed and notify the fire brigade.
All vehicles except PLUG-IN HYBRID vehicles:
the coolant temperature gauge is in the instru-
ment cluster on the right-hand side (
Y
page 32).
PLUG-IN HYBRID vehicles: the multifunction dis-
play shows the coolant temperature in the
Coolant
Coolant
(
Y
page 292) submenu.
Under normal operating conditions and with the
specified coolant level, the coolant temperature
may rise to 120 †.
At high outside temperatures and when driving
uphill, the coolant temperature may rise to the
end of the scale.
Operating the on-board computer
Overview
:
Multifunction display
;
Right control panel
=
Left control panel
X
To activate the on-board computer: turn
the key to position 1 in the ignition lock.
You can control the multifunction display and
the settings in the on-board computer using the
buttons on the multifunction steering wheel.
In vehicles with the multimedia system
COMAND Online, you can find further informa-
tion on LINGUATRONIC in the separate operat-
ing instructions.
In vehicles with the multimedia system
Audio 20, you can find further information on
voice-controlled navigation in the separate man-
ufacturer's operating instructions.
282
Displays and operation
On-board
computer
and
display
s
