Page 154 of 502

 
 
WARNING 
Stale air can quickly make the driver tired and affect their concentration, which in turn can cause 
collisions, accidents and serious injuries. 
Never switch off the blower or switch on the air recirculation mode for an extended period as this 
prevents fresh air from entering the vehicle interior. 
 
NOTICE 
Food, medicine and other items that are sensitive to heat or cold could be either damaged or 
rendered useless by the air flowing out of the vents. 
Never leave food, medicines or other temperature-sensitive objects in front of the vents. 
 
NOTICE 
If the air conditioning system is not working, switch the air conditioning system off immediately and 
have it checked by a qualified workshop. This can help to prevent secondary damage. 
 
Some settings can be stored in the user accounts of the personalisation function and therefore 
change automatically when the user account changes Personalisation 
Front controls 
 
Fig. 91 In the upper part of the centre console: air conditioning block for the manual air conditioning 
system and heating and fresh air system.  
     
        
        Page 155 of 502

Fig. 92 In the upper part of the centre console: Climatronic air conditioning block. 
First read and observe the introductoryinformation and safety warnings
Some functions and buttons may vary according to the vehicle equipment and the type of system 
installed. 
Air conditioning settings in the Infotainment system 
Press the button in the air conditioning block to open the Climatronic air conditioning settings 
in the Infotainment system. 
The upper part of the screen shows the current air conditioning settings. 
Blue: cooling. 
Red: heating. 
Touch the function button to set the automatic control of air recirculation mode, the 
supplementary heater and the windscreen heating. 
Touch the function button to switch cooling mode, air distribution and the blower on and off via 
the Infotainment system. 
Touch the Presettings function button to set the automatic mode, the maximum cooling output, the 
defrost function and the manual mode of the cooling system via the Infotainment system. 
Touch the function button to set the blower speed in mode. 
Switching off 
Press the button in the air conditioning block (vehicles without auxiliary heater). 
OR: touch the function button on the Infotainment system. 
Manual air conditioning system: turn the centre rotary control to position Fig. 91 
Climatronic: turn the centre rotary control anti-clockwise as far as it will go Fig. 92 
Climatronic with allergen filter 
The allergen filter of the Air Care Climatronic can reduce the amount of pollutants and also allergens 
that enter the vehicle interior.  
     
        
        Page 156 of 502

button in the air conditioning block. 
Touch the Air Care function button. 
Touch the Active function button to switch the Air Care function on or off. 
Synchronising the temperature settings 
Press the  button to adopt the temperature settings of the driver side for the front passenger 
side. 
Automatic mode 
The automatic mode ensures constant temperatures in the vehicle interior. The air temperature, air 
quantity and air distribution are regulated automatically. Automatic mode switches off if ventilation 
is adjusted manually. 
Cooling mode 
Press the button in the air conditioning block to switch cooling mode on or off. 
In cooling mode, the air is dehumidified. 
Maximum cooling 
Manual air conditioning system: turn the left rotary control to position . Air 
recirculation mode is switched on automatically. 
Climatronic: press the  button. Air recirculation mode is switched on automatically 
and the air distribution is set to the position. 
/ Temperature 
Manual air conditioning system: turn the left rotary control Fig. 91 
Climatronic: turn the outer rotary controls Fig. 92to adjust the temperatures for the driver 
and front passenger sides. 
The set temperatures are displayed above the rotary controls for Climatronic. 
Seat and steering wheel heating 
Press the buttons  or  to switch the seat heating on and off Seat heating 
To operate the seat heating and steering wheel heating at the same time with the button, link 
the two functions via the air conditioning settings in the Infotainment system Switching the 
steering wheel heating on or off together with the seat heating (only for Climatronic) 
/ Auxiliary heater  
     
        
        Page 157 of 502

button in the air conditioning block to switch the auxiliary heater on and off when the 
ignition is switched off  
Touch the function button in the Infotainment system air conditioning settings to access the 
Auxiliary heater menu Auxiliary heater and ventilation 
The auxiliary heater provides additional heating when the ignition is switched on. 
Blower 
Turn the middle rotary control. 
When Climatronic is in automatic mode, no blower speed is displayed in the rotary control. 
Air recirculation mode 
Press the  button. 
Air distribution 
air distribution to the upper body via the vents in the dash panel. 
air distribution to footwell. 
air distribution to the upper body and the footwell. 
air distribution to the windscreen and the footwell. 
air distribution to the windscreen. 
| Defrost function 
Manual air conditioning system: turn the right rotary knob to position Fig. 91 
Climatronic: press the  button Fig. 92 
Manual air conditioning system: in the defrost function, the air recirculation mode switches off 
and the air conditioning compressor for the cooling system switches on in order to dehumidify the 
air. When the defrost function is switched on, it is not possible to switch the air recirculation mode 
on or the air conditioning compressor off1). 
Rear window heating 
Press to switch the rear window heating on or off while the engine is running. 
The rear window heating will switch off after 10 minutes at the latest. 
Recommended settings for manual air conditioning system 
Switch off air recirculation mode. 
Set blower to setting  or .  
     
        
        Page 158 of 502
 
Open and position all vents on the dash panel. 
Turn the air distribution regulator to the desired position. 
Press the  button in the air conditioning block to switch the cooling system on. 
Recommended settings for Climatronic 
Press the  button. 
Set the temperature to +22
     
        
        Page 159 of 502

  position. 
 
WARNING 
Stale air can quickly make the driver tired and affect their concentration, which in turn can cause 
collisions, accidents and serious injuries. 
Never use the air recirculation mode for an extended period as no fresh air will enter the vehicle 
interior. 
If the cooling system is switched off, condensation can form on the windows very quickly in air 
recirculation mode and reduce visibility considerably. 
Switch off the air recirculation mode when it is no longer required. 
 
NOTICE 
In vehicles with an air conditioning system, do not smoke when the air recirculation mode is 
switched on. The smoke can leave a residue on the cooling system evaporator and the dust and 
pollen filter with pollution filter insert, producing a lasting unpleasant odour. 
 
When reversing the vehicle, or when the wash and wipe system is being used, the air recirculation 
mode will switch on to prevent odours from entering the vehicle interior. 
Climatronic 
 
If the outside temperature is very high, the manual air recirculation mode can be activated for a 
short time to help cool the vehicle interior more quickly. 
Seat heating 
First read and observe the introductoryinformation and safety warnings
The seat cushions and backrests can be heated electrically when the engine is running. 
Operating the seat heating 
Press the or  button in the air conditioning block in order to switch the seat heating to the 
highest temperature setting. 
Press the or  button repeatedly until the desired setting is reached. 
To switch the seat heating off, press the or  button repeatedly until no LEDs are lit.  
     
        
        Page 161 of 502

 
Steering wheel heating 
First read and observe the introductoryinformation and safety warnings
The steering wheel heating works when the engine is running. 
Switching the steering wheel heating on and off via the Infotainment system 
Manual air conditioning system: press the  button on the Infotainment system and 
touch the Vehicle and function buttons. 
Climatronic: open the air conditioning settings in the Infotainment system. 
Touch the function button to switch the steering wheel heating on and off. 
Switching the steering wheel heating on or off together with the seat heating (only for Climatronic) 
Open the air conditioning settings in the Infotainment system. 
Touch the function button. 
Touch the Link seat/steering wheel heating function button to link the steering wheel heating with 
the seat heating. 
Press the button to switch the steering wheel heating on or off together with the seat heating. 
Selecting a temperature setting (only for Climatronic) 
Open the air conditioning settings in the Infotainment system. 
Touch the function button. 
Touch the Setting function button to select a temperature setting. 
Three temperature settings are available. The selected setting is saved when the ignition is switched 
off. The temperature setting for the steering wheel heating is unrelated to the temperature setting 
for the seat heating. 
Switch-off conditions 
The steering wheel heating will be switched off automatically if one of the following conditions is 
met: 
Seat heating for the driver seat is switched off (if Link seat/steering wheel heating is active). 
Power consumption is too high. 
There is a fault in the steering wheel heating system. 
Troubleshooting 
First read and observe the introductoryinformation and safety warnings 
     
        
        Page 163 of 502

 
Maximum heat output and the fastest possible defrosting of the windows are possible only when 
the engine is running. Do not start your journey until you have good visibility. 
To help ensure good visibility, make sure that you use the air conditioning system and the rear 
window heating correctly. 
Auxiliary heater and ventilation 
 Introduction 
This chapter contains information on the followingsubjects: 
Switching the auxiliary heater and ventilation on and off
Programming the auxiliary heater and ventilation
Remote control
The auxiliary heater and ventilation system can be used to heat the vehicle interior in the winter and 
ventilate it in the summer. It is able to clear ice, condensation and a thin layer of snow from the 
windscreen. The auxiliary heater is supplied with fuel from the vehicle fuel tank and can be operated 
when the vehicle is stationary with the ignition switched off. The auxiliary ventilation system is 
powered by the 12-volt vehicle battery. 
Auxiliary heater exhaust system 
The emissions generated by the auxiliary heater are discharged via an exhaust pipe underneath the 
vehicle. The exhaust pipe must not be blocked by snow, mud or other objects. 
 
WARNING 
Among other things, the emissions from the auxiliary heater contain carbon monoxide, which is an 
odourless and colourless poisonous gas. Carbon monoxide can cause people to lose consciousness. It 
can also cause death. 
Never switch on the auxiliary heater when the vehicle is in unventilated or closed rooms nor let the 
auxiliary heater run in unventilated or closed rooms. 
Never program the auxiliary heater so that it is switched on and runs in unventilated or closed 
rooms. 
 
WARNING 
Parts of the auxiliary heater exhaust system become very hot. This can cause fires. 
Park the vehicle so that no part of the exhaust system can come into contact with any inflammable 
material underneath the vehicle, e.g. dry grass.