Heating and air conditioning system97
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Safety
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Technical Data
Recirculated air mode
In recirculated air mode air is sucked out of the interior of the vehicle
and then fed back into the interior.Recirculated air mode prevents polluted air outside the vehicle from getting into the
vehicle, for example when driving through a tunnel or when standi ng in a traffic jam.Switching recirculated air mode on– Press the button - the warning light lights up in the button page 95, fig. 106 .Switching recirculated air mode off– Press again the button - the warning light in the button goes out.
The recirculated air mode is switched off automatically if the air distribution control
is in position
page 95, fig. 106. You can also switch recirculated air mode on
again from this setting by repeatedly pressing button .
WARNING
You should not leave recirculated air mode on over a longer period of time, as
“stale” air may result in fatigue in the driver and occupants, divert your atten-
tion and also cause the windows to mist up. The risk of having an accident
increases. Switch recirculated air mode off as soon as the windows begin
misting up.Climatic* (semi-automatic air conditioning system)Description
The Climatic is a combined coolin g and heating system. It makes it
possible to optimally control the air temperature at any season of the
year.Description of the Climatic
It is important for your safety and for your driving comfort that the Climatic is operating
properly. The cooling only operates if button
page 98, fig. 107 is pressed, and the
following conditions are met:
engine running,
outside temperature above approx. +2°C and
blower switch switched on (positions 1 to 4).
If the cooling system is switched on, the temperature and air humidity drops in the
vehicle. The wellbeing of the occupants of the car is enhanced as a result of this partic-
ularly at high outside temperatures and a high air humidity. The system prevents the
windows misting up during the cold season of the year.
The heating effect is dependent upon the c oolant temperature, thus full heat output
only occurs when the engine has reached its operating temperature.
It is possible to briefly activate recirculat ed air mode in order to enhance the cooling
effect .
Air at a temperature of about 5°C may flow out of the vents under certain circum-
stances when the cooling system is operating. Lengthy and uneven distribution of the
air flow out of the vents and large differences in temperature, for example when getting
out of the vehicle, can result in chills in sensitive persons.
The air inlet in front of the windscreen must be free of ice, snow or leaves in order to
ensure that the heating and cooling systems operate properly.
After switching on the cooling Condensation from the evaporator of the air condi-
tioning may drip down and form a puddle be low the vehicle. This is quite normal and
not an indication of a leak!
WARNING
For your own safety and that of other road users, ensure that all the
windows are free of ice, snow and misting. Please familiarize yourself about
how to correctly operate the heating and ventilation systems, how to demist
and defrost the windows, as well as with the cooling mode.
You should not leave recirculated air mode on over a longer period of time,
as “stale” air may result in fatigue in the driver and occupants, divert your
attention and also cause the windows to mist up. The risk of having an accident
increases. Switch recirculated air mo de off as soon as the windows begin
misting up.
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Heating and air conditioning system99
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Please refer to the information regarding recirculated air mode page 100.
Set ClimaticRecommended settings of Climatic contro ls for the respective operating modes:
Setup
Setting of the control dial
Button
Air outlet vents 3
Defrosting the windscreen and
side windows
recommended 22°C
3
Switched off
Do not switch on
Open and align with the side
window
Free windscreen and side win-
dows from mist
Desired tempera-ture
2
switched on
Do not switch on
Open and align with the side window
The fastest heating
recommended 22°C
2
Switched off
briefly switched on
Opening
Comfortable heating
Desired tempera-
ture
2 or 3
Switched off
Do not switch on
Opening
the fastest cooling
recommended 22°C
briefly4, then 2or 3
switched on
briefly switched on
Opening
optimal cooling
Desired tempera-ture
1, 2 or 3
switched on
Do not switch on
open and align to the roof
Fresh air mode - ventilation
To the left up to the
stop
Desired position
Switched off
Do not switch on
Opening
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Technical Data
outside temperature above approx. +2°C,
switched on.
If the cooling system is switched on, the temperature and air humidity drops in the
vehicle. The wellbeing of the occupants of the car is enhanced as a result of this partic-
ularly at high outside temperatures and a high air humidity. The system prevents the
windows misting up during th e cold season of the year.
The heating effect is dependent upon the c oolant temperature, thus full heat output
only occurs when the engine has reached its operating temperature.
It is possible to briefly activate recirculat ed air mode in order to enhance the cooling
effect page 103.
The air inlet in front of the windscreen must be free of ice, snow or leaves in order to
ensure that the heating and cooling systems operate properly.
The AC compressor is switched off at a hi gh coolant temperature in order to provide
cooling at a high load of the engine.
After switching on the cooling Condensation from the evaporator of the air condi-
tioning may drip down and form a puddle be low the vehicle. This is quite normal and
not an indication of a leak!
Recommended setting for all periods of the year:
Set the desired temperature, we recommend 22°C.
Press the button page 102, fig. 108 .
Move the air outlet vents 3 and 4 so that the air flow is directed slightly upwards.
WARNING
For your own safety and that of other road users, ensure that all the
windows are free of ice, snow and mistin g. Please familiarize yourself about
how to correctly operate th e heating and ventilation systems, how to demist
and defrost the windows, as well as with the cooling mode.
You should not leave recirculated air mode on over a longer period of time,
as “stale” air may result in fatigue in the driver and occupants, divert your
attention and also cause the windows to mist up. The risk of having an accident
increases. Switch recirculated air mode off as soon as the windows begin
misting up.
Note
If the cooling system has not been switched on for a lengthy period, odours may
be produced at the evaporator because of deposits. Switch the cooling system on at
least once a month for approximately 5 minu tes at the highest blower stage - also
during the cold season of the year - in order to avoid such odours. Also open a window
for a short time.
We recommend that you do not smoke in the vehicle when the recirculating air
mode is operating since the smoke which is drawn at the evaporator from the interior
of the vehicle forms deposits in the evapor ator of the air conditioning system. This
produces a permanent odour when the air conditioning system is operating which can
only be eliminated through considerable effort and expense (replacement of
compressor).
The used air streams out through the air removal openings in the luggage compart-
ment.
On vehicles equipped with a factory-fitted radio* or navigation*, the information
of the Climatronic is also shown on the display. This function can be switched off, see
operating instructions of the radio* or the navigation system*.
Using the cooling economically page 100.
Operational problems page 100.
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switching cooling on and offswitching cooling on and off–Press the button page 102, fig. 108 . The warning light lights up in the button.
– When you again press the switch , the cooling system is switched off. The warning light in the button goes out. Only the function of the ventilation remains
active when no lower temperature than the outside temperature can be reached.Setting temperatureYou can separate the interior temperature for the left and right side separately.
– You can set the temperature for both sides after switching on the ignition with the
control dial .
– If you wish to set the temperature for the right side, turn the control dial . The warning light in the button lights up, this indicates that differing tempera-
tures for the left and right side can be set.
If the warning light in the button lights up, the temperature for both sides
cannot be set with the control dial . You can reinitiate this function by pressing the
button . The warning light in the button which indicates the possibility to set
differing temperatures for the left and right side, goes out.
You can set the interior temperature between +18°C and +26°C. The interior temper-
ature is regulated automatically within this range. If you chose a temperature lower
than +18°C, a blue symbol lights up at the start of the numerical scale. If you chose a
temperature higher than +26°C, a red symbol lights up at the end of the numerical
scale. In both limit positions the Climatroni c operates at maximum cooling or heating
capacity, respectively. The temperatur e is not controlled in this case.
Lengthy and uneven distribution of the air flow out of the vents (in particul ar at the leg
area) and large differences in temperature, for example when getting out of the vehicle,
can result in chills in sensitive persons.
Recirculated air mode
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-in air.Recirculated air mode prevents polluted air outside the vehicle from getting into the
vehicle, for example when driving through a t unnel or when standing in a traffic jam. If
a considerable increase in concentration of pollutants is recognized by the air quality
sensor, when the automatic air distribution co ntrol is switched on, the air distribution
control will temporarily be switched off. If the concentration of pollutants decreases to
the normal level, the air distribution control is automatically switched off so that fresh
air can be guided into the vehicle interior.Switching recirculated air mode on– Press the button repeatedly until the warning light on the left side of the
button lights up.Switch on automatic air distribution control– Press the button repeatedly until the warning light on the right side of the
button lights up.Switch off automatic air distribution control temporarily– If the air quality sensor does not switch on the air distribution control automatically when there is a nauseating smell, you can switch it on yourself by pressing the
button *. The warning light lights up in the button on the left side.Switching recirculated air mode off– Press the button or press the bu tton repetitively, until the warning
lights in the button go out.
WARNING
You should not leave recirculated air mode on over a longer period of time, as
“stale” air may result in fatigue in the driver and occupants, divert your atten-
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Technical Data
WARNING
The auxiliary heating must never be operated in closed rooms - risk of
poisoning!
The auxiliary heating must not be runn ing during refueling - risk of fire.
The exhaust pipe of the auxiliary heating is located on the underside of the
vehicle. Therefore do not place the vehicl e, if you wish to operate the auxiliary
heating, in such a way that the exhaust gases of the auxiliary heating can come
easily into contact with inflammable mate rials (e.g. dry grass) or easily inflam-
mable substances (e.g. fuel run out).Note
If the auxiliary heating runs, the fuel consumption comes from the vehicle tank.
Therefore the auxiliary heating should not be op erated, if there is very little fuel in the
tank.
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 be en operated several times over a longer
period, the vehicle must be driven a few ki lometers in order to recharge the vehicle
battery.
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.
After switching off the auxiliary heating, the coolant pump runs for a short period.
The auxiliary heating and ventilation does not switch on or comes on, if the vehicle
battery indicates a low loading state.
The auxiliary heating (auxiliary heating) does not switch on, if the following was
shown in the information display or before switching off the ignition: Please refuel!
(Please refuel!) .
The air inlet in front of the windscreen must be free of ice, snow or leaves in order
to ensure that the auxiliary heating operates properly.
So that warm air can flow into the vehicl e interior after switching on the auxiliary
heating, you must maintain the temperature normally selected by you (we recom-
mend 22°C). It is recommended to put the air flow in the position
.
On vehicles with DPF (diesel particle filter) the warm coolant heats up the engine.
Direct switching on/offThe auxiliary heating (auxiliary heating and vent ilation) can be switched on or off at any
time directly using the button on the operating part of the Climatic fig. 109 or
on the operating part of the Climatronic.
If the auxiliary heating and ventilation is not switched off earlier, it switches off auto-
matically after the expiration of the set operating period, in the menu Running time.Using the system
So that the auxiliary heating (auxiliary heating and ventilation) func-
tions according to your expectations, it is necessary to carry out the
basic setting before its programming.Basic setting– On the information display, select from the Main menu the menu point
Aux. heating .
– In the menu Aux. heating select the menu point Weekday and set the current day.
– Return to a higher level by selecting the menu point Back, i. e. in the menu
Aux. Heating .
Fig. 109 Button for direct switching
on/off of the auxiliary heating (auxiliary
heating and ventilation) on the oper-
ating part of the Climatic
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Technical Data
Starting-off and DrivingSetting steering wheel positionFig. 110 Adjustable steering wh eel: Lever below steering columnYou can set the height and the forward/back position of the steering wheel to the
desired position.
– Adjust the driver seat page 11.
– Pull the lever below the steering wheel down fig. 110 - left .
– Set the steering wheel to the desired position (concerning height and forward/back position).
– Push the lever upwards as far as the stop.
WARNING
You must not adjust the steering wheel when the vehicle is moving!
The driver must maintain a distance of at least 25 cm to the steering wheel
fig. 110 - right. Not maintaining this minimum distance will mean that the
airbag system will not be able to properly protect you - hazard!
For safety reasons the lever must always be firmly pushed up to avoid the
steering wheel altering its po sition unintentionally when driving - risk of acci-
dent!
If you adjust the steering wheel furthe r towards the head, you will reduce
the protection offered by the driver airbag in the event of an accident. Check
that the steering wheel is aligned to the chest.
When driving, hold the steering wheel with both hands firmly on the outer
edge in the 9 o'clock and 3 o'clock po sition. Never hold the steering wheel
firmly in the 12 o'clock position or in another way (e.g. in the middle of the
steering wheel or at the inne r steering wheel edge). In such cases, injuries to the
arms, the hands and the head can occur when the driver airbag is deployed.
Ignition lockPetrol engines
- ignition switched off, engine off, the steering can be locked.
- ignition switched on
- start engine
Diesel engines - interruption of fuel supply, ignition swit ched off, engine off, the steering can be
locked.
- heating glow plugs on, ignition switched on
WARNING (continued)
Fig. 111 Ignition lock positions
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poisonous gas - hazard! Carbon monoxide can cause unconsciousness and
death.
Never leave your vehicle unattended with the engine running.Caution
The starter may only be operated (ignitio
n key position ), if the engine is not
running. If the starter is immedi ately operated after switching off the engine, the starter
or the engine can be damaged.
Avoid high engine revolutions, full throttle and high engine loads as long as the
engine has not yet reached its normal oper ating temperature - risk of damaging the
engine!
Vehicles which are fitted with an exhaust gas catalytic converter should not be tow-
started over a distance of more than 50 metres.For the sake of the environment
Never warm up the engine when the vehicle is standing. Drive off right away. Through
this the engine reaches its operating temperature more rapidly and the pollutant emis-
sions are lower.Petrol enginesThese engines are fitted with a starter system which selects the correct fuel-air mixture
for every external air temperature.
Do not operate accelerator before and when starting engine.
Interrupt the attempt at starting after 10 seconds if the engine does not start right
awayand wait for about 30 seconds before repeating the attempt.
It is possible that the fuse on the electric al fuel pump is defect if the engine still
does not start. Check the fuse and replace it if necessary page 226.
Contact the nearest specialist garage to obtain professional assistance.
It may be necessary, if the engine is very hot, to slightly depress the accelerator after
the engine has started.
Diesel enginesGlow plug system
Diesel engines are equipped with a glow plug system, the preglow period being
controlled automatically in line with the coolant temperature and outside tempera-
ture.
The preglow indicator light
comes on after the ignition has been switched on.
You should not switch on any major electrical components during the heating
period otherwise the vehicle battery will be drained unnecessarily.
You should start the engine immediately after the glow plug warning light
has
gone out.
The glow plug warning light will come on for about one second if the engine is at a
normal operating temperature or if the outside temperature is above +5°C. This means
that you can start the engine right away.
Interrupt the attempt at starting after 10 seconds if the engine does not start right
awayand wait for about 30 seconds before repeating the attempt.
It is possible that the fuse on the diesel preglow system is defect if the engine still
does not start. Check the fuse and replace it if necessary page 226.
Contact the nearest specialist garage to obtain professional assistance.
Starting the engine after the fuel tank has run dry
It may take longer than normal to start the engine after refuelling if the fuel tank has
run completely dry - up to one minute. This is because the fuel system must first of all
be filled while the attempting to start the engine.
Switching off the engine– The engine can be switched off by turnin g the ignition key from position into
page 107, fig. 111.
WARNING
Never switch off the engine before the vehicle is stationary - risk of accident!
WARNING (continued)
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Releasing the handbrake– Pull the handbrake lever up slightly and at the same time press in the locking
button fig. 113 .
– Hold the button pressed and push the handbrake lever down fully .
The handbrake warning light
lights up when the handbrak e is applied, provided the
ignition is on.
A warning signal sounds and the following text appears in the display* if you have inad-
vertently driven off with the handbrake applied:
Release parking brake!
The handbrake warning is acti vated if you drive at a speed of more than 6 km/h for
more than 3 seconds.
WARNING
Please note that the handbrake must be fully released. A handbrake which
is only partially released can result in the rear brakes overheating which will
have a negative effect on the operation of the brake system - risk of accident! In
addition this can result in premature wear of the rear brake pads.
Never leave children unattended in the vehicle. The children might, for
example, release the handbrake or take the vehicle out of gear. The vehicle
might then move off - risk of accident!Caution
After the car has come to a stop, always firs t of all apply the handbrake firmly before
then additionally engaging a gear (manual gearbox) or moving the selector lever into
position P (automatic gearbox).
Rear parking aid*The parking aid provides a warning of obstacles behind the vehicle.The audible parking aid determines the di stance between the rear bumper and an
obstacle located behind the ve hicle with the aid of ultrasound sensors. The tones of
the parking aid can be adapted in th e menu of the information display* page 25.
The sensors are integrated in the rear bumper.
Range of sensors
The clearance warning begins at a distance of about 160 cm from the obstacle (area
fig. 114 ). The interval between the warning signals becomes shorter as the clear-
ance is reduced.
A continuous tone sounds from a distance of approx. 30 cm (area ) - danger area.
You should not reverse any further after this signal sounds! If the vehicle is
equipped with a factory-fitted towing device*, the border of the danger area starts -
continuous tone - 5 cm further behind th e vehicle. The vehicle can be extended
through an installed deta chable towing device.
On vehicles equipped with a factory-fitted radio* or navigation system*, the distance
to the obstruction is shown graphically in the display. On vehicles with a factory-fitted
towing device, the sensors are deactivated when towing a trailer. The driver is informed
about this by a graphic display (vehicle towing a trailer) in the radio* or the navigation*
display. The factory-fitted radio* or navigati on system* can be set so that the play func-
tion volume decreases when activating the parking aid, see Owner's Manual radio* or
navigation system*. This improves the audibility of the parking aid.
Fig. 114 Parking aid: Detection range of
rear sensors
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