WARNINGNever leave recirculated air mode switched on over a longer period of time, as
“stale air” can cause driver and passenger fatigue, 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.
Climatronic (automatic air conditioning system)
Introduction
This chapter contains information on the following subjects:
Control elements
112
Automatic mode
113
Switching the cooling system on/off
113
Setting temperature
113
Automatic recirculation mode
114
Controlling blower
114
Defrosting windscreen
115
The Climatronic in automatic mode ensures the best-possible setting of the tem-
perature of the outflowing air, the blower stage and air distribution.
The system also takes sunlight into account, which eliminates the need to alterthe settings manually.
The cooling system only operates if the following conditions are met. The cooling system is switched on » page 112, Control elements .
The engine is running.
The outside temperature above approx. +2 °C.
The cooling system is switched off at a high coolant temperature in order to pro-
vide cooling at a high load of the engine.
Note
We recommend that you have Climatronic cleaned by a specialist garage once ev-
ery year.Control elementsFig. 110
Climatronic: Control elements
First read and observe the introductory information given on page 112.
Functions of the individual controls » Fig. 110 .
Adjust the temperature for the left side or for both sides » page 113
Interior temperature sensor
Adjust the blower speed » page 114
Adjust the temperature for the right side » page 113
Display the temperature setting for the left side
Display the temperature setting for the right side
Depending on equipment:
›
Aux. heating on/off » page 116
›
Switching Climatronic system off
Control the seat heater on the front left seat » page 76
Air flow to the windows
Air flow to the upper body
Air flow in the footwell
Automatic recirculation switch on or off » page 114
Control the seat heater on the front right seat » page 76
Switch the intensive windscreen heater on/off » page 115
Switching the rear window heater on/off » page 64
ABCD123112Using the system
Switching the windscreen heater on/off » page 64
Climatronic set in the Infotainment » Operating instructions for Infotain-
ment
Switch the temperature setting in Dual mode on/off » page 113
Switching automatic mode on » page 113
Switching the cooling system on/off » page 113
Note
Do not stick anything onto or cover the interior temperature sensor 11 » Fig. 110
as this could impair the functioning of the Climatronic.
Automatic mode
First read and observe the introductory information given on page 112.
Automatic mode works in three modes - moderate, medium, and intensive.Setting the individual operating modes » Operating instructions for Infotainment ,
chapter Vehicle settings .
Climatronic is set to the medium setting at the factory.
Recommended setting for all periods of the year
›
Set the desired temperature, we recommend 22 °C.
›
Press the button
» Fig. 110 on page 112.
›
Set the air outlet vents 3 and 4 » Fig. 106 on page 107 so that the air flow is
directed slightly upwards.
After the automatic mode is switched on, Climatronic works in the last selected
mode.
The currently selected mode is displayed in the Infotainment display. Automatic mode can be switched off by pressing one of the buttons for the air
distribution or by increasing/decreasing the blower speed.
Switching the cooling system on/off
First read and observe the introductory information given on page 112.
›
Press the symbol button
.
The warning light in the button lights up.›
Press the symbol button
again.
The warning light in the button goes out.
After the cooling system is switched off, only the ventilation function remains ac-
tive whereby the minimum temperature that can be reached is the outside tem-
perature.
Setting temperature
First read and observe the introductory information given on page 112.
The interior temperature for the left and right side can be set separately or to-
gether.
For both sides
›
Turn the control dial
A
» Fig. 110 on page 112 to the left or right to increase or
decrease the temperature.
The warning light in the symbol button
does not light up.
For the right side
›
Turn the control dial
D
» Fig. 110 on page 112 to the left or right to increase or
decrease the temperature.
The warning light in the symbol button
lights up.
If the warning light in the symbol button
is lit, the temperature for both sides
cannot be set with the control dial
A
. This function can be resumed by pressing
the symbol button
. The warning light in the button goes out.
The interior temperature can be set between +16 ℃ and +29 ℃. The interior tem-
perature is regulated automatically within this range.
If a temperature lower than +16 ℃ is selected, a blue symbol lights up on the cor-
responding control dial.
If a temperature higher than +29 ℃ is selected, a red symbol lights up on the cor-
responding control dial.
At both end positions, Climatronic runs at maximum cooling/heating output and
the temperature is automatically not regulated.
113Heating and air-conditioning
Defrosting windscreenFirst read and observe the introductory information given on page 112.
Switching on/off
›
Press the symbol button » Fig. 110 on page 112.
›
Press the symbol button again or press the symbol button .
More air flows out of the air outlet vents 1 » Fig. 106 on page 107. The tempera-
ture control is controlled automatically.
Auxiliary heating (auxiliary heating and ventilation)
Introduction
This chapter contains information on the following subjects:
Switching on/off
116
Radio remote control
116
Conditions for the functioning of auxiliary heating (Aux. heating and ventilation),
hereinafter referred to only as auxiliary heating (Aux. heating).
The charge state of the vehicle battery is sufficient.
The fuel supply is adequate (the warning icon
is not lit in the display of the
instrument cluster).
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).
Auxiliary heating (parking heating)
The auxiliary heating (parking heating) 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).
The auxiliary heater (parking heater) functions in connection with the air-condi-
tioning system or Climatronic.
The auxiliary heating (parking heating) also warms up the engine.
The auxiliary heating (parking heating) warms up the coolant by combusting fuel
from the vehicle tank. The coolant heats air flowing into the passenger compart- ment (as long as the blower fan speed B
» Fig. 108 on page 108 or
C
» Fig. 110
on page 112 is not set to zero).
WARNING■ The auxiliary heater (independent vehicle heater) must never be operated in
closed rooms (e.g. garages) – risk of poisoning!■
The auxiliary heating (parking heating) must not be running during refuelling
– risk of fire.
■
The exhaust pipe of the auxiliary heating is located underneath the vehicle.
Therefore, if you wish to operate the auxiliary heating (parking heating), do
not park the vehicle in such a way that the exhaust gases can come into con-
tact with highly flammable materials (e.g. dry grass) or easily inflammable sub-
stances (e.g. spilt fuel) – risk of fire.
CAUTION
■ The running auxiliary heating (parking heating) consumes fuel from the vehicle
tank and automatically controls the filling level. If only a low quantity of fuel is
present in the fuel tank, the auxiliary heater switches itself off.■
The exhaust pipe of the auxiliary heating, which is located underneath the vehi-
cle, must not be clogged up and the exhaust flow must not be blocked.
■
If the auxiliary heating 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 (aux. heating) switches on the blower B » Fig. 108 on
page 108 or C » Fig. 110 on page 112 only 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.
■
So that warm air can flow into the vehicle interior after switching on the auxili-
ary heating, you must maintain the comfort temperature normally selected by
you, leave the fan switched on and leave the air outlet vents in an open position.
It is recommended to put the air flow in the position or .
115Heating and air-conditioning
Switching on/offFig. 111
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 115.
The auxiliary heating (parking heating) can be switched on/off as follows.
Manually switching on using the button on the operating part of the manual air conditioning/Clima-
tronic. The indicator light in the button illuminates » Fig. 111.
by using the radio remote control » page 116
Manually switching off
using the button on the operating part of the manual air conditioning/Clima-
tronic. The indicator light in the button goes out » Fig. 111.
by using the radio remote control » page 116
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.
After switching off the auxiliary heating, the coolant pump runs for a short period.
Switching on automatically
The auxiliary heater is switched on according to the Infotainment settings » Info-
tainment manual , chapter Vehicle settings .
When automatic switching on is activated, the indicator light in the symbol button lights up for about 10 seconds after the ignition is turned off.
Switching off automatically
Turning off the auxiliary heating (auxiliary heating) occurs in the following cases. › The set switch-off has been achieved
» Operating instructions for Infotainment ,
chapter Vehicle settings .
› The fuel level has reached the reserve area (the warning icon
illuminates).
› The charge state of the vehicle battery has reduced too much
» page 224.
Radio remote control
Fig. 112
Auxiliary heating (aux. heating):
Radio remote control
First read and observe the introductory information and safety warn-
ings on page 115.
Explanation of graphic » Fig. 112
Aerial
Warning light
Switch on the auxiliary heating
Switch 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 (aux. heating) on or off, hold the remote control
vertical, with the aerial
A
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.
AB116Using the system
If an engine is only idling it takes much longer for it to reach its normal operating
temperature. Wear-and-tear and pollutant emissions, though, are particularly
high in the warming-up phase. Therefore, start driving as soon as the engine has
started. though high engine speeds should be avoided.
Avoiding short distances
Fig. 125
Principle sketch: Fuel consump-
tion in l/100 km at different tem-
peratures
First read and observe the introductory information and safety warn-
ings on page 131.
Short distances result in an above-average high fuel consumption. We therefore recommend avoiding distances of less than 4 km if the engine is cold.
A cold engine consumes the most fuel immediately after the start. Fuel consump-tion drops to 10 litres/100 km after just 1 kilometre. The consumption stabilises
once the engine and catalytic converter have reached their operating tempera-
ture.
An important factor in this connection is also the ambient temperature. The im-
age » Fig. 125 shows the different levels of fuel consumption after driving a cer-
tain distance at a temperature of +20 °C and at a temperature of -10 °C.
The vehicle has a higher fuel consumption in winter than in summer.
Convenience consumers
First read and observe the introductory information and safety warn-ings
on page 131.
The convenience consumers have a share in fuel consumption.
We recommend you keep these consumers on only for as long as necessary. The convenience consumers include:
› The air conditioning system;
› Rear window heater;
› Windscreen heater;
› Heating of the external mirror;
› Rear fog light;
› Fog lights;
› Heated front seats;
› Auxiliary heating (parking heating).
Information about convenience consumers and the amount of fuel con- sumed » operating instructions for Infotainment , chapter Vehicle settings (CAR
button) .
Up to three convenience consumers are displayed in the Infotainment display-
the top 3 in terms of energy consumption 1)
.
Checking tyre inflation pressure
First read and observe the introductory information and safety warn-ings
on page 131.
Tyres which are correctly inflated save fuel.
Always ensure the tyre inflation pressure is correct. If the inflation pressure is too
low, the tyres must overcome a higher rolling resistance. This will not only in-
crease fuel consumption but also tyre wear and the driving behaviour will worsen.
Always check the tyre inflation pressure when the tyres are cold.
1)
The exterior mirror heater will only be shown in the infotainment display when outside temperatures
are below about 20 ° C.
133Starting-off and Driving
Operating conditions of the systemFig. 144
Instrument cluster display: En-
gine shut down is not currently
available
First read and observe the introductory information and safety warn-
ings on page 158.
The START-STOP system is very complex. Some of the procedures are hard to
check without servicing.
No engine shut down is carried out
Before each STOP phase, the system checks whether certain conditions have
been met. No engine shut down takes place in the following situations.
› The engine has not reached the minimum temperature for START STOP mode.
› The temperature inside the vehicle has not reached the desired temperature
set in the air-conditioning system/heating.
› The external temperature is very low/high.
› The windscreen heater is switched on.
› The intensive windscreen heater (Climatronic) or windscreen heater/ventilation
is switched on with the maximum air temperature setting (manual air condition-
ing system).
› The parking aid/Park Assist is switched on.
› The charge state of the vehicle battery is too low.
› The stationary vehicle is on a steep slope or a steep downhill section.
› The idling speed is too high.
A check warning icon appears in the display
» Fig. 144 .
The automatic start procedure takes place again
During the STOP phase, the engine fires up without any active driver intervention,
e.g. in the following situations.
› The vehicle begins to roll, e.g. on a slope.
› The difference between the temperature setting of the air-conditioning sys-
tem/heating and the temperature of the interior is too large.
› The windscreen heater is switched on.
› The intensive windscreen heater (Climatronic) or windscreen heater/ventilation
is switched on with the maximum air temperature setting (manual air condition-
ing system).
› The brake pedal was pressed several times (the pressure in the braking system
is too low).
› The charge state of the vehicle battery is too low.
› The current consumption is too high.
Manually activating/deactivating the system
Fig. 145
Button for the START-STOP sys-
tem
First read and observe the introductory information and safety warn-
ings on page 158.
Activation/deactivation
›
Press the symbol button
» Fig. 145 .
When start-stop mode is deactivated, the warning light in the button lights up.
Note
■ If the system is deactivated during the STOP phase, the automatic start proce-
dure takes place.■
Selecting the driving mode Eco when the system is deactivated will automati-
cally activate the system » page 161.
160Driving
CAUTION■Regularly remove dust from the seat covers using a vacuum cleaner.■Electrically heated seats must not be dried after cleaning by switching on the
heater.■
Do not sit on wet seats - risk of seat deformation.
■
Always clean the seats from “seam to seam”.
Seat belts
First read and observe the introductory information and safety warn-
ings
on page 208.
The belt webbing must always be kept clean.
Wash dirty seat belts with mild soapy water.
Remove coarse dirt with a soft brush.
Dirty belt webbing may impair the correct functioning of the inertia reel.
WARNING■ The seat belts must not be removed for cleaning.■Never clean the seat belts chemically as chemical cleaning products could
destroy the fabric.■
The seat belts must not be allowed to come into contact with corrosive liq-
uids (e.g. acids).
■
Check the condition of all the seat belts on a regular basis. If any damage to
the belt webbing, seat belt connections, inertia reel or lock is detected, the
seat belt must be replaced by a specialist garage.
■
The seat belts must be fully dried before being rolled up.
211Vehicle care
ReplenishingFirst read and observe the introductory information and safety warn-
ings
on page 219.
›
Check the oil level » page 220.
›
Unscrew the cap of the engine oil filler opening » Fig. 182 on page 218.
›
Replenish the oil in portions of 0.5 litres in accordance with the correct specifi-
cations » page 219 .
›
Check the oil level » page 220.
›
Carefully screw on the oil filler opening cap and push the dipstick in fully.
Changing
First read and observe the introductory information and safety warn-ings
on page 219.
The engine oil must be changed according to prescribed service inter-vals » page 198 or according to the service interval display » page 33.
Coolant
Introduction
This chapter contains information on the following subjects:
Capacity
222
Checking the coolant level
222
Replenishing
222
The coolant consists of water with a concentration of coolant additive. This mix-
ture guarantees antifreeze protection, protects the cooling/heater system
against corrosion and prevents the formation of scale.
Vehicles exported to countries with a mild climate are already factory-filled with
a coolant which offers antifreeze protection down to about -25 ℃. In these coun-
tries the concentration of coolant additive should be at least 40 %.
Vehicles exported to countries with a cold climate are already factory-filled with a
coolant which offers antifreeze protection down to about -35 °C. In these coun-
tries the concentration of coolant additive should be at least 50 %.
If a higher concentration of antifreeze is required for climatic reasons, the amount
of coolant additive can only be increased up to a maximum of 60 % (antifreeze
protection down to approx. -40 °C).
When refilling, only use antifreeze with the name specified on the coolant expan-
sion tank » Fig. 185 on page 222.WARNING■
The engine compartment of your car is a hazardous area. While working in
the engine compartment, be sure to observe the following warn- ings » page 215 .■
Do not continue your journey, if for some reason it is not possible to top
up the coolant under the prevailing conditions! Switch off the engine and seek
assistance from a specialist garage.
CAUTION
■ The amount of coolant additive in the coolant must never be allowed to be less
than 40 %.■
Over 60 % of coolant additive in the coolant reduces the antifreeze protection
and coolant effectiveness.
■
A coolant additive that does not comply with the correct specifications can sig-
nificantly reduce the corrosion protection.
■
Any faults resulting from corrosion may cause a loss of coolant and can conse-
quently result in major engine damage!
■
Do not fill the coolant above the mark
A
» Fig. 185 on page 222.
■
If a fault causes the engine to overheat, we recommend visiting a specialist ga-
rage, as otherwise serious engine damage may occur.
221Inspecting and replenishing