If a considerable increase in concentration of pollutants is recognised by the air
quality sensor, recirculated air mode will temporarily be switched off.
If the concentration of pollutants decreases to the normal level, the air distribu-
tion control is automatically switched off so that fresh air can be guided into the
vehicle interior.
In recirculated air mode air is sucked out of the interior of the vehicle and then
fed back into the interior. When the automatic air distribution control is switched on, an air quality sensor measures the concentration of pollutants in the drawn inair.
If the air quality sensor does not switch on automatic recirculated air mode when there is an unpleasant smell, you can switch in on manually.
Switching on/off›
Press the button and the warning light underneath the button illuminates.
›
Press the button again, the warning light underneath the button goes out,
where necessary press the button AUTO.
You can also switch the system on/off in he Infotainment » Bedienungsanleitung
Infotainment, chapter Setting vehicle systems (CAR button) .
WARNINGDo not leave recirculated air mode on over a longer period of time, as “stale”
air can cause fatigue of the driver and passengers, reduce attention levels and
also cause the windows to mist up. The risk of having an accident increases.
Switch off recirculated air mode as soon as the windows start to mist up.
Note
■ If the windscreen mists up, press the button . Press the button AUTO when
the windscreen is demisted.■
The automatic air distribution control operates only if the outside temperature
is higher than approx. 2 °C.
Controlling blower
The blower stage can be manually adapted to suit your particular needs.
›
Turn the control dial
B
» Fig. 86 on page 86 to the left or right to increase or
decrease the blower speed.
If the blower speed is reduced to a minimum, Climatronic is switched off.
The set blower speed is displayed in the control dial B when the respective num-
ber of warning lights come on.WARNING■ “Stale air” may result in fatigue in the driver and occupants, reduce attention
levels and also cause the windows to mist up. The risk of having an accident
increases.■
Do not switch off the Climatronic system for longer than necessary.
■
Switch on the Climatronic system as soon as the windows mist up.
Defrosting windscreen
Switching on/off
›
Press the button
» Fig. 86 on page 86.
›
Press the button or the button
AUTO again.
More air flows out of the air outlet vents 1 » Fig. 82 on page 82. The temperature
control is controlled automatically.
Auxiliary heating (auxiliary heating and ventilation)
Introduction
This chapter contains information on the following subjects:
Switching on/off
89
setting
90
Remote control
90
Replacing the battery in the remote control
91
Function prerequisites when switching on:
› Comfort temperature has been set;
› The blower is switched on;
› the air outlet vents are opened;
› The air outlet is set to position
or
.
Auxiliary heating (parking heating) › It can be used when stationary, when the engine is switched off to preheat the
vehicle and while driving (e.g. during the heating phase of the engine);
› It works in tandem with the hearer, air-conditioning system or Climatronic;
88Using the system
›The engine is also preheated when the vehicle is stationary and the engine is
not running;
› It warms up the coolant by burning fuel from the vehicle tank. The coolant
warms up the air, which (if the blower speed is not set to zero) flows into the passenger compartment.
Auxiliary ventilation
The auxiliary ventilation enables fresh air to flow into the vehicle interior by
switching off the engine, whereby the interior temperature is effectively de-
creased (e.g. with the vehicle parked in the sun).WARNING■ The auxiliary heating must never be operated in closed rooms - risk of poi-
soning!■
The auxiliary heating must not be running during refuelling - risk of fire.
■
The exhaust pipe of the auxiliary heating is located on the underside of the
vehicle. Therefore, if you wish to operate the auxiliary heating, do not park the vehicle in such a way that the exhaust gases can come into contact with high-
ly flammable materials (e.g. dry grass) or easily inflammable substances (e.g.
spilt fuel).
CAUTION
■ The running auxiliary heater consumes fuel from the vehicle tank and automati-
cally controls the filling level. If only a low quantity of fuel is present in the fuel
tank, the function of the auxiliary heating is blocked.■
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 and ventilation is running, the vehicle battery discharges.
If the auxiliary heating and ventilation has been operated several times over a
longer period, the vehicle must be driven a few kilometres in order to recharge
the vehicle battery.
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 operating problem.
■
The air inlet in front of the windscreen must be free of e.g. ice, snow or leaves
to ensure that the auxiliary heating and cooling system operates properly.
Switching on/offFig. 87
Button for switching on/off the system directly on the operating
part of the air conditioning/Climatronic
First read and observe the introductory information and safety warn-ings
on page 88.
Switching on
Manually using the button on the operating part of
the air conditioning/Climatronic. The warning light in the button lights up.» Fig. 87Manually using the radio remote control.» page 90 Automatically through the configured and activated
departure time.» page 90
Switching off
Manually using the button on the operating part of
the air conditioning/Climatronic. The warning light in the button goes out.» Fig. 87Manually using the radio remote control.» page 90 Automatically when the pre-set departure time is
reached or when the pre-set run time has elapsed.» page 90 Automatically when the indicator light lights up .» page 10 Automatically when the charge state of the vehicle
battery dropped too far.» page 176
After switching the system off, the auxiliary heating will continue running a little
while longer in order to burn the remaining fuel in the auxiliary heater. Exhaust
fumes from the system will thus be directed outside.
89Heating and air conditioning system
After switching off the auxiliary heating, the coolant pump runs for a short period.
The auxiliary heater does not switch on: › when the following appears in the instrument cluster display, or the the follow-
ing was displayed before the ignition was turned off: Please refuel. Range: ...
km or PLEASE REFUEL ;
› when the charge state of the vehicle battery is too low;
› when no pre-set time is activated.
setting
First read and observe the introductory information and safety warn-
ings
on page 88.
Information on the setting » Bedienungsanleitung Infotainment, chapter Setting
vehicle systems (CAR button) .
Before the setting is started, check the correct time and date settings.
Checking the settings
When the departure time is activated, the indicator light in the button
lights up
for around 10 seconds after the ignition is turned off.
Remote control
Fig. 88
Auxiliary heater: Radio remote control
First read and observe the introductory information and safety warn-
ings
on page 88.
Explanation of graphicAAerialBBattery coverCWarning lightSwitch on the auxiliary heatingSwitch off the auxiliary heating
The transmitter and the battery are housed in the housing of the remote control.
The receiver is located in the interior of the vehicle.
When the battery is fully charged, the range of the remote control is a few hun-
dred metres. Obstacles between the radio remote control and the vehicle, bad
weather conditions and a weaker battery can clearly reduce the range.
To switch the auxiliary heating on or off, hold the remote control vertical, with the
aerial pointing upwards. The antenna must not be covered with the fingers or the palm of the hand during this process.
The auxiliary heating can only be switched on/off safely using the radio remote control, if the distance between the radio remote control and the vehicle is at
least 2 m.
After pressing the button, the warning light in the remote control gives the
user different kinds of feedback:
Display warning light C » Fig. 88DescriptionLights up green for around 2 seconds.The auxiliary heating was switched on.Lights up red for around 2 seconds.The auxiliary heating was switched off.Slowly flashes green for around 2 sec-
onds.The ignition signal was not received.Quickly flashes green for around 2 sec-
onds.The auxiliary heating is blocked, e. g
because the tank is nearly empty or
there is a fault in the auxiliary heating.Flashes red for around 2 seconds.The switch off signal was not received.Lights up orange for around 2 seconds,
then green or red.The battery is weak, however the
switching on or off signal was received.Lights up orange for around 2 seconds,
then flashes green or red.The battery is weak, however the
switching on or off signal was not re-
ceived.Flashes orange for around 5 seconds.The battery is discharged, however the
switching on or off signal was not re-
ceived. 90Using the system
Index
A
ABS Function
113
Warning light17
Accessories165
Active driver-steering recommendation (DSR)112
Adjusting Exterior mirror
58
Interior mirror57
Adjusting seats139
Adjustment Seat
60
Aerial160
see Radio reception162
Airbag146
Deployment146
Front airbag147
Head airbag150
Knee airbag148
Side airbag149
Airbag system146
Air conditioning system Air outlets
82
Climatronic86
Manual air conditioning system84
Air outlets82
Alarm35
Anti-theft alarm system35
Antilock brake system113
Armrest Front
76
rear64
Ashtray70
Assist systems ABS
17, 113
Cruise control systems (CCS)119
EDL114
ESC17, 112
Headlight assist47
Lane Assist126
Park Assist116
Parking aid114
ProActive passenger protection125
Select driving mode124
START/STOP121
TCS16, 113
Auto Check Control12
Automatic driving lamp control45
Automatic gearbox Dynamic shift programme
132
Emergency programme132
Kickdown132
Selector lever-emergency unlocking133
Selector lever lock131
Selector lever positions130
Starting-off and driving130
Tiptronic131
Automatic load deactivation180
Automatic transmission129
Auxiliary heating and cooling system Switching on/off
89
Auxiliary heating (auxiliary heating and ventila- tion)
88
setting90
B
Ball rod Check attachment
108
installing107
Ready position107
removing108
Battery Replacing the battery in the remote control(aux-
iliary heating)
91
Before setting off138
Belt tensioners145
Bonnet Closing171
Opening171
Boot Cover
67
Fastening elements65
Fixing of the floor covering66
Light65
see Boot lid37
Boot lid37
Automatic locking38
Brake booster97
Brake fluid Checking
175
Brake pads Indicator light
20
Brakes Brake assist systems
112
Brake booster97
Handbrake98
Running in100
Warning light14
Braking Brake fluid
175
Information for braking97
Breakdown kit192
Break recommendation see Fatigue detection
27
Bulbs Replacing
202
Button in the driver's door Electrical power windows
38
C
Car computer see Multifunction display
22
Car jack188
Carrier68
Catalytic converter100
Central locking button32
212Index
Hazard warning light system49
Headlight beam adjustment44
Headlight flasher45
Main beam45
parking light45
Parking light44
Rear fog light48
Replacing bulbs202
Tourist light46
Turn signal light45
Lights Low beam
44
switching on and off44
Warning lights12
Loads207
Locking Remote control
32
Locking and unlocking from the inside32
Lock the vehicle Keys
31
Luggage compartment Emergency unlocking
38
Fixing nets66
Folding double hooks66
Unlocking the luggage compartment lid38
M
Mirror Exterior mirror
58
Vanity53
Mobile phone134
Multicollision brake112
Multifunction display Functions
22
Memory22
Select data22
Multimedia135
AUX137
MEDIA IN137
USB137
N
Nets
66
O
Oil refer to Engine oil
172
Onboard computer see Multifunction display
22
Operation in winter De-icing windows
162
Diesel fuel169
Vehicle battery179
Outside temperature21
Overview Engine compartment
172
Warning lights12
P
Paint see Paint damage
161
Paint damage161
Parking automatic brake assist
116
Manoeuvring out of a parallel parking space116
Park Assist116
Parking aid114
Parking ticket holder80
Passive Safety138
Pedals99
Petrol refer to Fuel
168
Polishing the paintwork refer to Taking care of your vehicle
161
Power sockets 12 V
71
230 V71
Power steering93
Power windows Button in the front passenger door40
Preservation refer to Taking care of your vehicle
161
ProActive passenger protection125
R
Radiator fan
175
Radio reception Aerial
162
Functional fault162
Raise vehicle191
Rear mirror56
Exterior mirror58
Interior mirror57
Rear seats Seat backrest
63
Rear window - heating52
Recirculated air mode Climatronic
87
Manual air conditioning system85
Recommended gear21
Refuelling167
Fuel167
Regulation Headlight beam
44
Remote control32
Auxiliary heating (auxiliary heating)90
Synchronisation process33
Remote control key Replacing the battery
28
Replacement of parts165
replacing Vehicle battery
179
Replacing bulbs
202
Fuses199
The rear window wiper blade56
Wiper blades56
215Index