Operation Manual

Note
■
The auxiliary heating only switches the blower on, if it has achieved a coolant
temperature of approx. 50 °C.
■
At low outside temperatures, this can result in a formation of water vapour in
the area of the engine compartment. This is quite normal and is not an operat-
ing problem.
■
So that warm air can flow into the vehicle interior after switching on the aux.
heating, you must maintain the comfort temperature normally selected by you,
leave the fan switched on and leave the air outlet vents in open. It is recom-
mended to put the air flow in the position

or

.
Switching on/off
Fig. 140 Button for direct power on / off of the auxiliary heating (heating
and ventilation) on the front panel of the Climatronic / manual air condi-
tioning
Read and observe and on page 117 first.
The auxiliary heating (heating and ventilation) (hereinafter referred to as a
heater) can be switched on and off as follows.
Switching on
▶
Manually with the symbol key

on the front panel of the Climatronic or the
manual air conditioning » Fig. 140.
▶
Manually with the symbol key

on the radio remote control.
▶
Via an automatically programmed and activated pre-set time in the Infotain-
ment.
▶
Automatically according to the ambient conditions » .

Switching off
▶
Manually with the symbol key  on the front panel of the Climatronic or the
manual air conditioning » Fig. 140.
▶
Manually with the symbol key

on the radio remote control.
▶
Via an automatically programmed and activated pre-set time in the Infotain-
ment.
▶
Automatically when the warning light

in the instrument cluster illumi-
nates.
▶
Automatically according to the ambient conditions » .
After switching the system off, the auxiliary heating will continue running a lit-
tle while longer in order to burn the remaining fuel in the auxiliary heater.
After switching off, coolant pump still runs for a short period.
Programming the auxiliary heating in the Infotainment
For vehicles with Climatronic: on the front panel of the Climatronic, press but-
ton

→

.
For vehicles with manual air conditioning: on the Infotainment, press button

→

.
When automatic switching on is activated, the indicator light in the symbol key

lights up » Fig. 140 for about 10 seconds after the ignition is turned off.
CAUTION
The automatic switching on and off the heating for rapid heating of the vehicle
interior can be disabled in the Infotainment » Owner´s Manual Infotainment,
chapter Setting the heating and the cooling system.
118
Using the system