Air conditioning
166Defrosting
The windscreen and side windows are defrosted or demisted
as quickly as possible.– To enable this mode, press the ⇒page 164, fig. 141 button.
– To disable, press the button again or select the button.The temperature is regulated automatically. The air output is increased to
maximum and most of the air comes out of outlets 1 and 2 ⇒page 169.
The air recirculation and ECON modes are switched off when the button is
pressed.Air recirculation: manual activation
The air recirculation setting prevents fumes etc. from entering
the interior.Activating air recirculation mode
–Press button ⇒page 164, fig. 141 ⇒ .
Deactivating air recirculation mode
– Press the button again or
– Press the button or
–Press button .In this setting, the air in the vehicle is constantly recirculated. We recommend
using the air recirculation mode in the following circumstances:
•When driving through a tunnel or in traffic congestions, to prevent
exhaust gas entering the interior of the vehicle.WARNING
Do not drive for too long with the air recirculation mode enabled because,
if the compressor is disconnected, the windscreen may mist up because no
fresh air is entering the interior of the vehicle, with the subsequent risk of
accidents.ECON Mode (economy)
ECON mode helps save fuel.– To activate, press the button ⇒page 164, fig. 141 .
– To deactivate, press the button again or select the button.Air cooling is disconnected in ECON mode. The heating and the blower are
adjusted automatically. “ECON” stands for “Economy”. Disconnecting air
cooling (compressor) reduces fuel consumption.
Please note that the interior temperature must not be lower than the outside
temperature in ECON mode. The blower does not cool or dehumidify the air in
the interior. The windows could therefore mist up.
In diesel vehicles, the auxiliary heater is switched off in ECON mode to save
fuel.
Note
If the diode on the ECON button continues to light up when the ECON mode
has been switched off (i.e. the air conditioner has been switched on) this is
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AUTO <
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ECONECONECON
AUTO
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Air conditioning167
Safety First
Operating Instructions
Practical Tips
Technical Specifications
due to a defect in one of the air conditioner components. If a malfunction
should occur, please contact a specialised workshop.
Air recirculation: automatic activation*
If the outside air is polluted by diesel and petrol emissions,
an air quality sensor in the vehicle will automatically switch
on the air recirculation.Activating air recirculation mode
– Press the button
⇒fig. 142 .
Deactivating air recirculation mode
– Press the button again or
– Press the button or – Press button .
The automatic air recirculation mode should normally be left switched on at
all times.
The system is ready to operate approx. 30 seconds after the engine ignition
key has been turned. During this initial period, fresh air is fed into the vehicle.
If the
air purity sensor in the air conditioner detects a certain concentration
of fumes in the outside air, the control unit will either pass the incoming air
through the pollution filter or automatically switch on the air recirculation. If
there is a high concentration of pollution in the outside air, the air conditioner
automatically switches to air recirculation and the supply of air from the
outside is cut off. As soon as the level of pollution decreases, air is fed into
the vehicle from the outside again.
The automatic air recirculation operates for a maximum period of 12 minutes.
If the windows mist up when the automatic air recirculation is on, press the button immediately.
The automatic air recirculation switches itself off under certain circumstances
(for instance if or is selected). In “ECON” and at temperatures lower
than approx. 8 °C below zero, the automatic air recirculation mode is limited
to 12 seconds.Switching the temperature display from °C to °F and vice versa
The temperature display can be switched from °C (degrees
Celsius) to °F (degrees Fahrenheit) and vice versa.– Press and hold the button for air recirculation mode and briefly press the plus button of the left-hand temperature
selector ⇒page 164, fig. 141 .
Fig. 142 Button for auto-
matic air recirculation
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Air conditioning
168Switching the air conditioner on/offSwitching the air conditioner off: models with an button
– Press the button. The air conditioner is switched off and the
supply of air from outside the vehicle is cut off.
Switching the air conditioner off: models with a button
– Keep pressing the button for the blower until the display segment is empty. The air conditioner is switched off and the
supply of air from outside the vehicle is cut off.
Switching the air conditioner on: models with an button
– Press the button again, or
– Press the button or
– Press one of the air distribution buttons , or .
Switching the air conditioner on: models with a button
– Press the button for the blower, or
– Press the button or
– Press one of the air distribution buttons , or .The air conditioner also starts to operate if one of the blower or temperature
selector buttons is pressed.
Blower speed
The automatically selected blower speed can be reduced or
increased manually.– Press the and buttons in the centre of the control panel ⇒page 164, fig. 141 to set the blower to the desired speed (and
regulate the volume of air delivery).The air conditioner system automatically regulates the blower speed
according to the interior temperature. However, you can also adjust the air
delivery manually. The current blower setting is illustrated by a bar in the
middle display (above the buttons).Automatic change of passenger temperatureIn order to automatically set the passenger temperature like the driver
temperature, press the button on the driver side for 2 seconds approx-
imately. In order to automatically set the driver temperature like the
passenger temperature, press the button on the passenger side for 2
seconds approximately.
OFF
OFF
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OFF
OFFAUTO
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+AUTO
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Air conditioning169
Safety First
Operating Instructions
Practical Tips
Technical Specifications
Air outletsThe air outlets ⇒fig. 143 and can be operated as follows:
Outlets and
– The outlets can be opened and closed by turning the left thum- bwheels.
– The direction of air delivery from the outlets can be varied as re quire d using the adjuster in the ce n tre o f ea ch o u t let g rille. The
direction of air flow can be adjusted horizontally and vertically as
desired.The flow of air from the outlets is controlled either automatically or manually,
depending on the operating mode selected. All the outlets can provide air
that is either heated, unheated or cooled.
The heater outlets for the rear footwells are located under the front seats.
They are controlled together with outlets .
Note
The cool air provided by the air conditioner is mainly issued from outlets
and . To ensure adequate cooling, outlets and should therefore
never be closed completely.Air distribution
The automatically-programmed air distribution can be
altered manually.The buttons , and can be operated either separately or in combi-
nation. To return to automatically controlled air distribution, switch off the
selected functions separately or press the button
Fig. 143 Dash panel: Location of air outlets
A3
A4
A3
A4
A5
A3
A4
A3
A4
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Air conditioning
170Each of the three buttons has a specific function. The numbers relate to the
air outlets ⇒page 169, fig. 143.
Air directed to windows
This setting directs all the air to outlets 1 and 2. Unlike in setting , the
volume of air delivery remains the same.
Air to the driver/front passenger
All the air comes from outlets 3 and 4 in the dash panel and from the rear of
the centre console.
Air to the footwells
Most of the air emerges from outlets 5 and the outlets under the front seats.
Some of the air will also be issued from outlets 3 and 4.
Note
In all of the above air distribution settings, a small amount of air will still
come from the other outlets.Economical use of the air conditioner
Economical use of the air conditioner will help save fuel.Engine power is reduced and fuel consumption increases when the
air conditioner is in co oling mode. To ensure that the system is only
switched on when it is really necessary, please note the following
points:
– Select ECON mode if you wish to save fuel.
– S e le c t ECO N m o d e i f yo u d e ci d e t o o p e n t h e w i n d o w s o r su n r o o f * while driving. – If the vehicle has heated up after standing in the sun, open the
windows and doors for a short time to cool the vehicle.
For the sake of the environment
By saving fuel you also reduce the amount of pollutants emitted from your
vehicle.Key settings
When the ignition is switched on, the air conditioner settings
assigned to the key are selected automatically.The air conditioner settings selected are automatically stored and assigned
to the key in use. When the vehicle is started, the air conditioner automati-
cally selects the settings assigned to the key. Hence, every driver automati-
cally obtains his/her preferred settings without having to select them manu-
ally.
Note
Should another driver use the key and enter other settings, the previous
settings will be deleted.
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Air conditioning171
Safety First
Operating Instructions
Practical Tips
Technical Specifications
Solar-powered blower/sunroof*
If the vehicle is parked in sufficiently strong sunlight, the
blower will operate in solar-powered mode when the ignition
is switched off.After the ignition is switched off, the blower is supplied with electrical power
from the sunroof. Please ensure that outlets 3 and 4 are open ⇒page 169,
fig. 143 to ensure the best possible ventilation.
The blower only works when the sunroof is closed or tilted open at the rear.
If the air recirculation mode is on when you switch off the engine, the air
conditioner will automatically switch to fresh air ventilation.Auxiliary heater*Diesel vehicles are fitted with an auxiliary heater
2) to raise the temperature of
the interior as quickly as possible. At outdoor temperatures below +5 °C and
with the engine running, the auxiliary heater will switch on and off automati-
cally depending on the temperature of the coolant.
In order to save fuel, the auxiliary heater can be can be switched off by briefly
pressing the button on the air conditioner.
Seat heating*
The surface and backrest of the front seats can be electrically
heated.Turn thumbwheel or ⇒fig. 144 to switch on and adjust the
heating on the left or right front seats.The heating is switched off when the thumbwheel is set to 0. The temperature
settings range from 1 to 6.
Caution
To avoid damaging the heating elements of the seat heating, please do not
kneel on the seat or apply sharp pressure to a single point.
2)For Nordic countries only.
% # / .
Fig. 144 Detailed view of
the dash panel: Thum-
bwheel controls for seat
heating
A1
A2
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Intelligent technology193
Safety First
Operating Instructions
Practical Tips
Technical Specifications
Brake assist system
The brake assist system helps the driver to achieve optimum
braking effect.The brake assist system helps to increase braking power and thus to achieve
a shorter stopping distance. If the driver presses the brake pedal very quickly,
the brake assist system automatically boosts the braking force to the
maximum level, up to the point where the anti-lock brake function (ABS) inter-
venes to stop the wheels from locking. You should then keep the brake pedal
pressed until the vehicle has braked to the required speed. The brake assist
system switches itself off as soon as you release the brake pedal.
The brake assist system will not be operative if there is a malfunction in the
ABS or the ESP.
WARNING
Please remember that the accident risk always increases if you drive too
fast, especially in corners or on a slippery road, or if you follow too close
behind the vehicle in front of you. An increased accident risk cannot be
compensated even by the brake assist system.Electronic differential lock (EDL)
The electronic differential lock prevents the loss of traction
caused if one wheel starts spinning.General notes
The electronic differential lock (EDL) helps the vehicle to start moving, accel-
erate and climb a gradient in slippery conditions where this may otherwise be
difficult or even impossible. How it works
The EDL works automatically, without the driver's involvement. With the aid
of the ABS sensors, the system monitors the rotational speed of the drive
wheels
⇒page 192. If a considerable difference in revs is detected (approx.
100 rpm) in the speed of the drive wheels, e.g. when only one part of the
surface supporting the wheels is slippery, the system applies the brake to
slow down the skidding wheel so that more of the power is directed to the
other wheels. The systems works up to a speed of approx. 80 km/h. The
system will make noise while it is working.
Starting the vehicle
If one wheel has less grip and starts spinning (for instance, if one of the drive
wheels is on ice), keep pressing the accelerator gradually until the vehicle
starts moving.
Overheating of the brakes
To prevent the brake disk of the braked wheel from overheating, the EDL cuts
out automatically if subjected to excessive loads. In this case, the vehicle will
continue to run and will have the same running properties as those of another
without EDL.
The EDL will switch on again automatically when the brake has cooled down.
WARNING
•When accelerating on a uniformly slippery surface (for instance all four
wheels on ice or snow), press the accelerator gradually and carefully.
Despite EDL, the drive wheels may otherwise start to spin. This could
impair the vehicle's stability. Risk of accident.•Even with EDL, you should always adjust your speed to suit the road and
traffic conditions. Do not let the extra safety features tempt you into taking
any risks when driving. Failure to do so could result in an accident.
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Driving and the environment
198change down into a lower gear or range (depending on the type of trans-
mission). This makes use of engine braking and relieves the brakes.•Never let the brakes “drag” by applying light pressure. Continuous
braking will cause the brakes to overheat and the braking distance will
increase. Apply and then release the brakes alternately.•Never let the vehicle run with the engine switched off. The braking
distance is increased considerably when the brake servo is not active.•If the brake fluid loses its viscosity and is subjected to heavy use,
vapour bubbles can form in the brake system. This reduces the efficiency of
the brakes.•Non-standard or damaged front spoilers could restrict the airflow to the
brakes and cause them to overheat. Before purchasing accessories please
observe the relevant instructions ⇒page 223, “Technical modifications”.•If a brake circuit fails, the braking distance will be increased consider-
ably. Contact a qualified workshop immediately and avoid unnecessary
journeys.
Exhaust gas purification systemCatalytic converter*To maintain the useful life of the catalytic converter
– Use only unleaded petrol with petrol engines, as lead damages the catalytic converter.
– Do not let the fuel get too low in the tank. – For engine oil changes, do not replenish with too much engine oil
⇒page 232.
– Never tow the vehicle to start it, use jump leads if necessary ⇒page 291.
If you notice misfiring, uneven running or loss of power when the vehicle is
moving, reduce speed immediately and have the vehicle inspected at the
nearest qualified workshop. In general, the exhaust gas warning lamp will
light up when any of the described symptoms occur ⇒page 66. If this
happens, unburnt fuel can enter the exhaust system and escape into the envi-
ronment. The catalytic converter can also be damaged by overheating.
WARNING
The catalytic converter reaches very high temperatures! There is a risk of
fire.•Never park where the catalytic converter could come into contact with
dry grass or flammable materials under the vehicle.•Do not apply additional underseal or anti-corrosion coatings to the
exhaust pipes, catalytic converter or the heat shields on the exhaust
system. These materials could catch fire when the vehicle is being driven.Caution
Never run the fuel tank completely dry because the irregularity of the fuel
supply may cause ignition problems. This allows unburnt fuel to enter the
exhaust system, which could cause overheating and damage the catalytic
converter.
For the sake of the environment
Even when the emission control system is working perfectly, there may be a
smell of sulphur from the exhaust gas under some conditions. This depends
WARNING (continued)
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