If the coolant temperature is over
248 ‡(120 †), do not continue driving. The
engine will otherwise be damaged.
The coolant temperature gauge is in the
instrument cluster on the right-hand side
(Y page 33).
Under normal operating conditions and with
the specified coolant level, the coolant
temperature may rise to 248 ‡ (120 †).
Tachometer
!
Do not drive in the overrevving range, as
this could damage the engine.
The red band in the tachometer indicates the
engine's overrevving range.
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
conditions when temperatures are around
freezing point.
The outside temperature display is in the
multifunction display (Y page 265).
Changes in the outside temperature are
displayed after a short delay.
Speedometer with segments
The segments in the speedometer indicate
which speed range is available.
R
Cruise control activated (Y page 191):
The segments lightup from the stored
speed to the maximum speed.
R
DISTRONIC PLUS activated (Y page 194):
One or two segments in the set speed
range light up.
R
DISTRONIC PLUS detects avehicle in front:
The segments between the speed of the
vehicle in frontand the stored speed light
up.
Operating the on-board computer
Overview
:
Multifunctiondisplay
;
Switches on the Voice Control System;
see the separate operating instructions
=
Right control panel
?
Left control panel
A
Back button
X
To activatethe on-board computer: turn
the SmartKey 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.
264
Displays and operation
On-board computer and displays
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