
Bonnet release lever ⇒ In the engine compartment
Fuse box cover ⇒ Changing fuses
Lever for adjusting the steering column position ⇒ Steering wheel
Light switch ⇒ Vehicle lighting
Turn signal and main beam lever ⇒ Vehicle lighting
With switches and buttons for the driver assist systems ⇒ Button for driver assist systems ⇒ Driver
assist systems
Vents ⇒ Heating and air conditioning system
Instrument cluster ⇒ Instrument cluster
With warning and indicator lamps ⇒ Symbols in instrument cluster
Lever for wipers and washers ⇒ Wipers
With buttons for operating the menus ⇒ Instrument cluster
Controls on the multifunction steering wheel:
Operating driver assist systems ⇒ Operating using the multifunction steering wheel ⇒ Driver assist
systems
Audio, navigation
Opening the telephone menu or accepting telephone calls
Volume adjustment
Activating voice control (no function in some models)
Horn
Location of the driver front airbag ⇒ Airbag system
Ignition lock ⇒ Starting and stopping the engine
Pedals ⇒ Pedals

Centre console
Fig. 8 Overview of the upper section of the centre console.
Fig. 9 Overview of the lower section of the centre console.
Key to ⇒ Fig. 8 :
Infotainment system ⇒BookletInfotainment system, ⇒ Infotainment system controls and
displays
Vents ⇒ Heating and air conditioning system
Buttons:

Front passenger side
Fig. 10 Overview of the front passenger side (left-hand drive vehicles). The location is mirrored in
right-hand drive vehicles.
Key to ⇒ Fig. 10 :
Vents ⇒ Heating and air conditioning system
At the side of the dash panel: key-operated switch for disabling the front passenger front airbag
⇒ Airbag system
Operating lever for the stowage compartment ⇒ Stowage areas
Controls in the roof
Symbol Meaning
Buttons for interior and reading lights ⇒ Interior lighting .
Switch for glass roof ⇒ Glass roof .
Buttons for the sun blind ⇒ Protection from the sun .
Buttons for emergency call service, information call and breakdown call ⇒ In an
emergency
Driver information
Symbols in instrument cluster
The warning and indicator lamps indicate various warnings, faults or certain functions. Some
warning and indicator lamps light up when the ignition is switched on and must go out once the
engine is running or the vehicle is in motion.
Depending on the vehicle equipment level, symbols may be displayed in the instrument cluster
instead of warning lamps.

Switch off the air recirculation mode when it is no longer required.
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.

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.

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.

Operating noises can be heard if the auxiliary heater is switched on.
The 12-volt vehicle battery will discharge if the auxiliary heating or ventilation is run several times
over an extended period. Drive the vehicle for an appropriate distance in between in order to
recharge the 12-volt vehicle battery.
The fuel gauge indication may not be accurate (just above the reserve quantity) when the vehicle is
parked on a slope; this may restrict the function of the auxiliary heater.
The auxiliary heater may switch on automatically when the engine is started at temperatures below
+5°C (+41°F) in order to provide additional hea ng power. The supplementary heating function will
switch off again automatically after a short time.
Programming the auxiliary heater and ventilation
First read and observe the introductoryinformation and safety warnings⇒Introduction
Opening the Auxiliary heater menu
The auxiliary heater is programmed in the Infotainment system.
Manual air conditioning system
Press the button on the Infotainment system.
Touch the Vehicle and function buttons.
Climatronic
Open the air conditioning settings in the Infotainment system.
Touch the function button.
Changing operating mode
Open the Auxiliary heater menu.
Press the Heating or Ventilation function buttons to change mode.
At high outside temperatures, the auxiliary ventilation system directs fresh air into the vehicle and
prevents the accumulation of heat.
Programming the auxiliary heater
Activation is always for one heating or ventilation operation only. The departure time must be
activated again for every start.