Mercedes-Benz GLS Operator's Manual page 236

Displays and operation
234
There is a short delay before a change in outside
temperature appears in the multifunction dis-
play.
Coolant temperature gauge
G
WARNING
Opening the hood when the engine is over-
heated or when there is a fire in the engine
compartment could expose you to hot gases
or other service products. There is a risk of
injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
!
If the coolant temperature is too high, a dis-
play message is shown.
If the coolant temperature display is in the
area marked in red, do not continue driving.
Otherwise, the engine will be damaged.
The coolant temperature gauge is in the instru-
ment cluster on the right-hand side (
Under normal operating conditions and with the
specified coolant level, the coolant temperature
gauge may rise to the red marking.
Operating the on-board computer
Overview
Multifunction display
:
Right control panel
;
= Left control panel
To activate the on-board computer: turn
X
page 37).
the SmartKey to position 1 in the ignition
Y
lock.
You can control the multifunction display and
the settings in the on-board computer using the
buttons on the multifunction steering wheel.
Vehicles with the COMAND multimedia system:
you can find further information on the Voice
Control System in the separate operating
instructions.
Vehicles with the Audio 20 multimedia system:
you can find further information on voice-oper-
ated control for navigation in the manufactur-
er's operating instructions.