Operating The On-Board Computer - Mercedes-Benz 2013 GL X166 Operator's Manual

Displays and operation
266
vehicle and do not stand near the vehicle until
the engine has cooled down.
! A display message is shown if the coolant
temperature is too high.
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
G
WARNING
The outside temperature indicator is not
designed to serve as an ice-warning device
and is therefore unsuitable for that purpose.
Indicated temperatures just above the
freezing point do not guarantee that the road
surface is free of ice. The road may still be icy,
especially in wooded areas or on bridges.
The outside temperature display is in the
multifunction display (
Changes in the outside temperature are
displayed after a short delay.
Y page 268).
Speedometer with segments
The segments in the speedometer indicate
which speed range is available.
Cruise control activated (
R
The segments light up from the stored
speed to the maximum speed.
DISTRONIC PLUS activated (
R
One or two segments in the set speed
range light up.
DISTRONIC PLUS detects a vehicle in front:
R
The segments between the speed of the
vehicle in front and the stored speed light
up.

Operating the on-board computer

Overview
Multifunction display
:
Switches on the Voice Control System;
;
see the separate operating instructions
Right control panel
=
Left control panel
?
Back button
A
X
To activate the on-board computer: turn
the SmartKey to position 1 in the ignition
lock.
Y
page 190):
Y page 193):