
Set the direction of the air outlet » page 99
Switch cooling system on/off
Switching the rear window heater on/off » page 59
Aux. heating on/off » page 107
Recirculating air operation on/off » page 102
Note
The warning light in the symbol button lights after activation, even if not all of
the conditions for the function of the cooling system are met » page 100. By light-
ing up of the indicator light in the button, the operational readiness of the cooling
system is signalled.C101Air conditioning system

adjustingFirst read and observe the introductory information and safety warnings
on page 100.
Recommended basic settings of the control elements of the air conditioning system for the respective operating modes:
SettingsControl dial settings » Fig. 107 on page 100Button » Fig. 107 on page 100Air outlet vents 2 » Fig. 105
on page 99ABC
Defrost/defog windscreen and
side windows a)Desired tempera-
ture3 or 4Automaticallyswitched onDo not switch onOpen and align with the side windowThe fastest heatingTo the right up tothe stop3Switched offBriefly switch onOpeningComfortable heatingDesired tempera- ture2 or 3Switched offDo not switch onOpeningThe fastest coolingTo the left up to
the stopbriefly 4, then 2 or 3ActivatedBriefly switch onOpeningComfortable coolingDesired tempera- ture1, 2 or 3ActivatedDo not switch onOpen and align to the roofFresh air mode - ventilationTo the left up tothe stopDesired positionSwitched offDo not switch onOpeninga)
We recommend that you do not use this setting in countries with high humidity levels. This can result in heavy cooling of the window glass and the following fogging from outside.
We recommend that you leave the air outlet vents 3 » Fig. 105 on page 99 in the
opened position.
Recirculated air mode
First read and observe the introductory information and safety warn-ings
on page 100.
Recirculated air mode prevents polluted air outside the vehicle from getting into
the vehicle, for example when driving through a tunnel or when standing in a traffic jam.
Switching on/off
›
Press the symbol button
.
The indicator light in the button lights up.
› Press the symbol button
again.
The indicator light in the button goes out.
Recirculated air mode is switched off automatically if the air distribution controlC
» Fig. 107 on page 100 is turned to position . Recirculated air mode can be
switched on again from this setting by repeatedly pressing the symbol 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.
102Using the system

Climatronic (automatic air conditioning system)
Introduction
This chapter contains information on the following subjects:
Control elements
103
automatic mode
104
Switching the cooling system on/off
104
Setting the temperature
104
Recirculation mode - Version 1
105
Recirculation mode - Version 2
106
Controlling blower
106
Defrosting windscreen
106
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 operates only if the following conditions are met. The cooling system is switched on » page 100.
The engine is running.
The outside temperature is 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.
Aeration of the vehicle when ignition is switched off
On models fitted with power sliding/tilting roof with sollar cells, the fresh air blower is automatically switched over to “solar mode” if the sun ray's are suffi-
cient after switching off the ignition. The solar cells on the sliding/tilting roof de-
liver power for the fresh air blower. This supplies the interior of the car with fresh air.
For an optimum ventilation, the air outlet vents 2 and 3 must be opened » Fig. 105
on page 99.
The ventilation functions only when the sliding/tilting roof is fully closed.
Note■ We recommend that you have Climatronic cleaned by a specialist garage once
every year.■
On vehicles equipped with a factory-fitted radio or radio navigation system, the
Climatronic information is also shown on their displays. This function can be
switched off, see » operating instructions for the radio or navigation system .
Control elements
Fig. 108
Climatronic: Control elements
First read and observe the introductory information given on page 103.
Functions of the individual controls » Fig. 108 :
Adjust the temperature for the left side » page 104
Adjust the blower speed
» page 106
Depending on equipment:
›
Aux. heating on/off » page 108
›
Switching the windscreen heater on/off » page 59
Adjust the temperature for the right side » page 104
Interior temperature sensor
ABCDE103Air conditioning system

Depending on equipment:
›
Recirculation mode with air quality sensor on/off » page 105, Recir-
culation mode - Version 1
›
Recirculation mode with air quality sensor on/off » page 106, Recircu-
lation mode - Version 2
Switch the intensive windscreen heater on/off
Air flow to the windows
Air flow to the upper body
Air flow in the footwell
Switching the rear window heater on/off » page 59
Control the seat heater on the front left seat » page 70
Switching automatic mode on » page 104
Switching Climatronic system off
Switch cooling system on/off » page 104
Switch the temperature setting in Dual mode on/off » page 104
Control the seat heater on the front right seat » page 70
Note
Do not stick anything on or cover the interior temperature sensor E, otherwise it
could have an unfavourable effect on the Climatronic.
automatic mode
First read and observe the introductory information given on page 103.
The automatic mode is used in order to maintain a constant temperature and to
demist the windows in the interior of the car.
Recommended setting for all periods of the year
›
Set the required temperature between +18 °C and +26 °C: we recommend 22 °C.
›
Press the button
» Fig. 108 on page 103.
›
Move the air outlet vents 2 and 3 » Fig. 105 on page 99 so that the air flow is
directed slightly upwards.
After pressing, an indicator light in the top right or left corner of the button
lights up, depending on which mode was last selected.
If the warning light in the top right corner of the button
lights up, the Clima-
tronic operates in “HIGH”-mode.
FThe “HIGH” mode is the standard setting of the Climatronic.
When pressing the button again, the Climatronic switches to “LOW”-mode
and the indicator light in the top left corner lights up. The Climatronic uses only in
this mode the lower blower speed. However taking into account the noise level, this is more comfortable, yet be aware that the effectiveness of the air condition-ing system is reduced particularly if the vehicle is fully occupied.
By pressing the button again, it is changed to “HIGH”-mode.
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 103.
›
Press the button
.
The indicator light in the button lights up.
›
Press button
. once more.
The indicator light in the button goes out.
After the cooling system is switched off, only the ventilation and heating function remains active whereby the minimum temperature that can be reached is the
outside temperature.
Setting the temperature
First read and observe the introductory information given on page 103.
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. 108 on page 103 to the left or right to increase or
decrease the temperature.
The indicator light in the button
lights up.
104Using the system

For the right side›Turn the control dial D » Fig. 108 on page 103 to the left or right to increase or
decrease the temperature.
The indicator light in the 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 restored by pressing
the symbol button . The indicator light in the button goes out.
The interior temperature can be set between +18 °C and +26 ℃. The interior tem-
perature is regulated automatically within this range.
If a temperature lower than +18 °C is selected, a blue symbol lights up at the start
of the numerical scale.
If a temperature higher than +26 °C is selected, a red symbol lights up at the start
of the numerical scale.
At both end positions, Climatronic functions at maximum cooling/heating output and the temperature is not regulated.
CAUTION
Lengthy and uneven distribution of the air flow out of the vents (especially
around the feet) and large differences in temperature, for example, when getting
out of the vehicle, can cause susceptible individuals to catch a cold.
Recirculation mode - Version 1
First read and observe the introductory information given on page 103.
Recirculated air mode prevents polluted air outside the vehicle from getting intothe vehicle, for example when driving through a tunnel or when standing in a
traffic jam.
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 in
air.
Switching recirculated air mode on›
Repeatedly press the button until the indicator light on the
left side of the
button is illuminated.
Switch on automatic air distribution control
›
Repeatedly press the button until the warning light on the
right-hand side
of the button lights up.
Switch off automatic air distribution control temporarily If the air quality sensor does not switch on automatic recirculated air mode whenthere is an unpleasant smell, you can switch it on manually.
›
Press the symbol button .
The indicator light lights up in the button on the left side.
Switching recirculated air mode off
›
Press the button
or press the symbol button again until the warning
lights in the button go out.
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 symbol button . Press the button
once the windscreen has demisted.■
The automatic air distribution control operates only if the outside temperature
is higher than approx. 2 °C.
105Air conditioning system

WARNINGInjuries or scolding or risks of accident or fire may occur when working in the
engine compartment. For this reason, it is essential to comply with the warn- ing instructions outlined below and with the general applicable safety rules.
The engine compartment of your car is a hazardous area!WARNINGThe following instructions must be followed before starting work in the en-
gine compartment:■
Turn off the engine and withdraw the ignition key.
■
Firmly apply the handbrake.
■
If the vehicle is fitted with a manual gearbox, move the gearshift lever into
Neutral, or if the vehicle is fitted with an automatic gearbox, move the selec-
tor lever into position P.
■
Allow the engine to cool.
■
Never open the bonnet if you can see steam or coolant escaping from the
engine compartment – risk of scalding! Wait until no more steam or coolant is escaping.
WARNINGThe following instructions must be followed when working in the engine com-
partment.■
Keep children clear of the engine compartment.
■
Never touch the radiator fan while the engine is still warm. The fan might
suddenly start running!
■
Do not touch any hot engine parts – risk of burns!
■
The coolant additive and thus all of the coolant is harmful to your health.
■
Avoid contact with the coolant.
■
Coolant vapours are harmful to health.
■
Never open the end cover of the coolant expansion reservoir while the en-
gine is still warm. The cooling system is pressurized!
■
When opening the end cover of the coolant expansion reservoir, cover it
with a cloth to protect your face, hands and arms from hot steam or hot cool-
ant.
■
If any coolant splashes into your eyes, immediately rinse out your eyes with
clear water and contact a doctor as soon as possible.
WARNING (Continued)■ Always store the coolant additive securely in its original container, and in
particular out of the reach of children – risk of poisoning!■
If coolant is swallowed, consult a doctor immediately.
■
Do not leave any items (e.g. cloths or tools) in the engine compartment.
■
Never spill fluids on the hot engine. Such fluids (e.g. the antifreeze con-
tained in the coolant) may ignite!
WARNINGThe following warning instructions must be observed at all times when work-
ing in the engine compartment while the engine is running.■
Pay particular attention to rotating engine parts (e.g. V-ribbed belt, genera-
tor, radiator fan) and the high-voltage ignition system – risk to life!
■
Never touch the electric wiring on the ignition system.
■
Avoid short circuits in the electrical system - particularly on the vehicle's
battery.
■
Always make sure that no jewellery, loose clothing or long hair can get
caught in rotating engine parts – risk to life! Always remove any jewellery, tie
back long hair and wear tight fitting clothing before completing any work.
WARNINGThe following warning instructions must be observed if work has to be carried
out on the fuel or electrical systems.■
Always disconnect the vehicle battery from the electrical system.
■
Do not smoke.
■
Never work near open flames.
■
Always have a functioning fire extinguisher nearby.
WARNING■ Read and observe the information and warning instructions on the fluid con-
tainers.■
Keep fluids in their original containers and keep securely out of the reach of
children!
207Inspecting and replenishing

The oil level must be checked at regular intervals. We recommend after each time
you refuel or prior to making a long journey.
We recommend maintaining the oil level within the range A
, but not above , if
the engine has been operating at high loads, for example, during a lengthy motor-
way trip during the summer months, towing a trailer or negotiating a high moun- tain pass.
The indicator light in the instrument cluster will indicate whether the oil level is
too low » page 18 , Engine oil level . Check the oil level using the dipstick as
soon as possible. Add oil accordingly.
CAUTION
The oil level must not exceed the range A » Fig. 164 – there is a risk of damaging
the exhaust system.
Replenishing
First read and observe the introductory information and safety warn-
ings
on page 210.
›
Check the oil level » page 211.
›
Unscrew the cap of the engine oil filler opening » Fig. 162 on page 209.
›
Replenish the oil in portions of 0.5 litres in accordance with the correct specifi-
cations » page 210 .
›
Check the oil level » page 211.
›
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 210.
The engine oil must be changed according to pre-specified service inter-
vals » page 191 or according to the service interval display » page 30.
Coolant
Introduction
This chapter contains information on the following subjects:
Capacity
213
Checking the coolant level
213
Replenishing
214
The coolant consists of water with coolant additive. This mixture guarantees anti- freeze protection, protects the cooling/heater system against corrosion and pre-
vents lime formation.
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 con-centration of coolant additive can be increased up to a maximum of 60% (anti-
freeze protection down to approx. -40 °C).
When refilling, only use the same antifreeze written on the antifreeze expansion tank » Fig. 165 on page 213.
WARNING■
The engine compartment of your car is a hazardous area. The following
warning instructions must be followed at all times when working in the en-
gine compartment » page 206.■
Do not continue your journey if for some reason it is not possible to fill with
coolant under the current circumstances . Switch off the engine and seek
assistance from a specialist garage.
CAUTION
■ The concentration of coolant additive in the coolant must never be under 40%.■Over 60% of coolant additive in the coolant reduces the antifreeze protection
and cooling effect. 212General Maintenance

If the coolant level in the coolant expansion tank is too low, this is indicated by
the warning light » page 16 , Coolant lighting up in the instrument cluster.
We still recommend inspecting the coolant level directly at the reservoir from
time to time.
Loss of coolant
A loss of coolant is first and foremost an indication of a leak in the system. Do
not merely top up the coolant. Have the cooling system checked by a specialist
garage.
Replenishing
First read and observe the introductory information and safety warn-
ings
on page 212.
Only top up with new coolant.
›
Switch off the engine.
›
Allow the engine to cool.
›
Place a cloth over the cap of the coolant expansion tank and unscrew the cap carefully .
›
Replenish the coolant.
›
Turn the cap until it clicks into place.
Do not use an alternative additive if the specified coolant is not available in an emergency. In this case, use just water and have the correct mixing ratio of waterand coolant additive restored by a specialist garage as soon as possible.
Brake fluid
Introduction
This chapter contains information on the following subjects:
Checking the brake fluid level
214
Changing
215WARNING■ The engine compartment of your car is a hazardous area. The following
warning instructions must be followed at all times when working in the en-
gine compartment » page 206.■
If the fluid level has dropped below the MIN marking » Fig. 166 on page 214,
do not continue your journey - there is a risk of an accident! Seek help from
a specialist garage.
■
Do not use used brake fluid - the function of the brake system may be im-
paired – risk of accident!
CAUTION
Brake fluid damages the paintwork of the vehicle.
Note
The brake fluid is changed as part of a compulsory inspection service.
Checking the brake fluid level
Fig. 166
Engine compartment: Brake fluid
reservoir
First read and observe the introductory information and safety warn-
ings on page 214.
The brake fluid reservoir is located in the engine compartment.
›
Switch off the engine.
›
Open the bonnet.
›
Check the level of brake fluid in the reservoir » Fig. 166.
The level must be between the “MIN” and “MAX” markings.
214General Maintenance