WARNING■The auxiliary heating (auxiliary heating and ventilation) (following as aux.
heating) must never be operated in closed rooms (e.g. garages) – risk of
poisoning!■
The auxiliary heating must not be allowed to run during refuelling – risk
of fire.
■
The exhaust pipe of the auxiliary heating is located on the underside of
the vehicle. If you want to use the heater, do not switch off the car in pla-
ces where the exhaust fumes can come into contact with flammable mate-
rials such as dry grass, undergrowth, leaves, spilled fuel etc. -. risk of fire.
CAUTION
■ The exhaust pipe of the auxiliary heating, which is located on the underside
of the vehicle, must not be clogged and the exhaust flow must not be blocked.■
If the auxiliary heating is running, the vehicle battery discharges.
■
The air inlet in front of the windscreen must be free (e.g. of ice, snow or
leaves) to ensure that the auxiliary heating operates properly.
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/offFig. 159
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 124 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. 159.
▶ 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. 159.
▶ 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 heating.
After switching off, coolant pump still runs for a short period.
124Using the system
No.Consumer42Boot lid, headlight washers, windscreen washer system43Visor for gas discharge bulbs, interior lighting44Towing hitch - contact in the socket45Operating the seat adjustment46230-Volt power socket47Rear window wiper48Blind spot detection49Coil on starter relay, clutch pedal switch50Opening the boot lid51Heating of the rear seats52Cooling of the front seats53Relay for rear window heater
Fuses in the engine compartment
Fig. 269
Fuse box cover: remove cover / plastic clip for fuses
Fig. 270
Fuses
Read and observe and on page 239 first.
Replacing fuses
›
Press together the interlocks of the cover simultaneously in the direction of
the arrow
1
» Fig. 269 .
›
Take out the cover in the direction of the arrow
2
.
›
Replace the appropriate fuse.
›
Place the cover on top of the fuse box.
›
Push in the interlocks on the cover and lock.
CAUTION
The cover for the fuse box in the engine compartment must always be applied
correctly. Water may get into the fuse box if the cover is not replaced properly
- there is a risk of damage to the vehicle!
Assignment of fuses in the engine compartment
Read and observe
and on page 239 first.
No.Consumer1ESC, parking brake2ESC3Engine control unit4Radiator fan, control valve for fuel pressure, relay for electric auxili-
ary heater5Coil of the ignition relay6Brake sensor7Radiator blind8Lambda probe9Coolant pump, ignition coil, preheating unit, air flow meter10Fuel pump11Electrical auxiliary heating system12Electrical auxiliary heating system13Automatic gearbox14Relay for windscreen heater15Horn16Ignition17ESC, engine control unit, main relay coil 241Fuses and light bulbs
