Hazard warning lights ⇒ In an emergency
Indicator lamp for the front passenger front airbag switch-off function ⇒ Airbag system
Driver assist systems ⇒ Driver assist systems
Controls for the air conditioning system, heating and fresh air system ⇒ Heating, ventilating,
cooling
Controls for the air conditioning system, heating and fresh air system ⇒ Heating, ventilating,
cooling
Key to ⇒ Fig. 9 :
Lever:
DSG® dual clutch gearbox ⇒ DSG® dual clutch gearbox
Manual gearbox ⇒ Manual gearbox: selecting a gear
Multimedia connections ⇒BookletInfotainment system,.
Cigarette lighter or 12-volt socket ⇒ Ashtray and cigarette lighter ⇒ Electrical sockets
Control for the 4MOTION Active Control ⇒ Driving profile selection and 4MOTION Active
Control
Stowage compartment with drink holder ⇒ Stowage areas
Buttons:
Electronic parking brake ⇒ Electronic parking brake
Auto Hold function ⇒ Auto Hold function
Ensure that there is no one in the path of the sun blind, especially if it is closed when the roll-back
function is not active.
The roll-back function does not prevent fingers or other body parts from being pressed against the
roof frame and being injured.
When the glass roof is open, the electric sun blind can be closed only up to the front edge of the
glass roof.
Heating and air conditioning system
Heating, ventilating, cooling
Introduction
This chapter contains information on the followingsubjects:
⇒ Front controls
⇒ Air recirculation mode
⇒ Seat heating
⇒ Steering wheel heating
⇒ Troubleshooting
The following systems may be installed in the vehicle
Both the manual air conditioning system and Climatronic heat, cool and dehumidify the air. It works
most effectively when the windows and the glass roof are closed. If heat has built up in the vehicle
interior, ventilating the vehicle can speed up the cooling process.
Display of activated functions
Lit up LEDs on rotary knobs and buttons indicate that the function is switched on.
WARNING
Poor visibility through the windows increases the risk of collisions and accidents, which can cause
serious injuries.
Keep all windows free from ice, snow and condensation to maintain good visibility.
Adjust the heating, air conditioning system and rear window heating so that condensation does not
form on the windows.
Only set off once all windows are clear.
Use air recirculation mode for a short period only. If the cooling system is switched off, condensation
can form on the windows very quickly in air recirculation mode and reduce visibility considerably.
Fig. 92 In the upper part of the centre console: Climatronic air conditioning block.
First read and observe the introductoryinformation and safety warnings⇒Introduction
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.
Press the 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. 92 to 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
Press the 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 .
Set the temperature selector to the middle position.
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°C (+72°F).
Open and position vents on the dash panel.
NOTICE
To prevent damage to the rear window heating, do not put stickers over the heating elements on
the inside of the window.
1) The air conditioning compressor can be switched off in some countries.
Air recirculation mode
First read and observe the introductoryinformation and safety warnings⇒Introduction
In air recirculation mode, no fresh air enters the vehicle interior.
Manual air recirculation mode
Press the button in the air conditioning block to switch manual air recirculation mode on or
off.
OR: touch the function button in the air conditioning settings in the Infotainment system.
Automatic air recirculation mode of Climatronic
In the automatic air recirculation mode, fresh air will enter the vehicle interior. The air recirculation
mode will switch on automatically if the system detects an increase in the concentration of noxious
substances in the outside air. The air recirculation mode will switch off as soon as the level of
noxious substances has returned to normal. The system cannot detect unpleasant odours.
Open the air conditioning settings in the Infotainment system.
Touch the function button.
Touch the Automatic air recirculation function button.
When is air recirculation mode deactivated?
Air recirculation mode is deactivated in the following situations ⇒ :
If the button or function button is pressed.
If the air distribution regulator of the manual air conditioning system is turned to 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⇒Introduction
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.
The cooling system cannot be switched on or its function is restricted
The cooling system functions only when the engine is running and at ambient temperatures above
+3°C (+38°F).
The cooling system is switched off when the engine is very warm.
Switch on the blower.
Check the fuse of the air conditioning system ⇒ Fuses in the dash panel .
Change the dust and pollen filter ⇒ Service .
If the fault persists, seek expert assistance.
The heating and fresh air system cannot be switched on or its function is restricted
The heating and defrost function are more effective when the engine is warm.
If the fault persists, seek expert assistance.
Condensation on the windows
Keep the air intake in front of the windscreen free of ice, snow or leaves in order to improve heating
and cooling performance ⇒ Vehicle care .
Do not cover the air vents in the rear of the luggage compartment to allow air to flow through the
vehicle from the front to the rear.
Press the button or turn the rotary knob to position in order to switch on the defrost
function ⇒ .
The wrong unit of temperature is set
Change the unit of temperature for all temperature displays in the vehicle using the Infotainment
system ⇒ Infotainment system controls and displays .
Change the unit of temperature in the instrument cluster menu ⇒ Instrument cluster .
Water under the vehicle
If the humidity and temperature outside the vehicle are high, condensation can drip off the
evaporator of the cooling system and form a pool underneath the vehicle. This is normal and does
not indicate a leak!
If the outside humidity is high and the outside temperature low, condensation may evaporate when
the auxiliary heater is running ⇒ Auxiliary heater and ventilation . If this is the case, steam may
appear underneath the vehicle. This is not a sign that the vehicle is damaged.
WARNING
Poor visibility through all windows increases the risk of collisions and accidents, which can cause
serious injuries.