
Fig. 110 In the upper section of the centre console: Climatronic controls.
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.
Switching off
•Press the  button (vehicles without auxiliary heateryf .
•Turn the centre rotary control left as far as it will go.
•Touch the  function button in the Infotainment system ⇒ Operating the Climatronic 
system via the Infotainment system.
 – Infotainment system
•Press the  button to open the Climatronic air conditioning settings in the Infotainment 
system ⇒ Operating the Climatronic system via the Infotainment system.
 – Synchronising the temperature settings
•Press  to transfer the temperature settings for the driver side to 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  to switch cooling mode on or off.
In cooling mode, the air is dehumidified.
 – Maximum cooling
•m/k/a995MK Manual air conditioning system: turn the left rotary control to position 
⇒ Fig. 109. Air recirculation mode is switched on automatically.
•m/k/a995MK Climatronic: press the  button ⇒ Fig. 110. Air recirculation 
mode is switched on automatically and the Climatronic air distribution is automatically set to 
position.
/ – Temperature
•m/k/a995MK Manual air conditioning system: turn the left rotary control ⇒ Fig. 109.
•m/k/a995MK Climatronic: turn the outer rotary controls ⇒ Fig. 110 to adjust the 
temperatures for the driver and front passenger sides.
The set temperatures are displayed above the outer 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 , 
pair the two functions via the air conditioning menu in the Infotainment system ⇒ Switching the 
steering wheel heating on or off together with the seat heating (only in vehicles with Climatronicyf.
 – Immediate heat button for auxiliary heater
•Press the  button to switch the auxiliary heater on and off when the ignition is switched off 
⇒.
The auxiliary heater provides additional heating when the ignition is switched on.
 – Residual heat
If the ignition is switched off and the engine is warm, the residual heat from the engine is used to 
continue to heat the vehicle interior. The function is switched off after 30 minutes and if the 12-volt 
vehicle battery has a low charge level.
 – Blower
•Turn the middle rotary control. 

No blower speed is displayed in the rotary control when Climatronic is in automatic mode.
 – 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
•m/k/a995MK Manual air conditioning system: turn the right rotary control to position 
⇒ Fig. 109.
•m/k/a995MK Climatronic: press the  button ⇒ Fig. 110.
m/k/a995MKManual 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 off.
m/k/a995MK Climatronic: the air is dehumidified and the blower is set to a high speed.
 – Windscreen heating
•Press the  button.
•Touch the  function button in the air conditioning menu to switch the windscreen heating 
on and off when the engine is running ⇒ Windscreen heating.
The windscreen heating will switch off after a few minutes.
 – Rear window heating
•Press the  button to switch the rear window heating on or off while the engine is running.
The rear window heating will switch off after a maximum of 10 minutes.
 In some countries, the air conditioner compressor can be switched off.
Operating the Climatronic system via the Infotainment system
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Opening the Air conditioning menu
•Press the  button on the control panel.
Display of air conditioning settings
The upper area of the screen shows the current air conditioning settings.
The air conditioning system operating conditions are highlighted in colour:
•Blue: cooling.
•Red: heating.
Adjusting settings
 – Switches Climatronic on and off.
 – Applies temperature settings of driver's seat to all seats.
1yf
To prevent damage to the rear window heating system, do not put stickers over the heating 
elements on the inside of the window.
NOTICE
1yf 

 – Switches Air Care on and off ⇒ Air Care Climatronic.
 – Locks the rear temperature selectors ⇒ Rear controls.
 – Opens the auxiliary heater menu ⇒ Auxiliary heater and ventilation.
 – Switches windscreen heating on and off ⇒ Windscreen heating.
 – Switches steering wheel heating on and off ⇒ Steering wheel heating.
 – Switches the seat heating on and off ⇒ Seat heating.
 – General settings submenu
Automatic air recirculation – Switches automatic air recirculation mode on and off ⇒ Air 
recirculation mode.
Automatic auxiliary heater – Allows or prevents auxiliary heating ⇒ Fuel and emission 
control.
Automatic windscreen heating – Switches automatic windscreen heating on and off 
⇒ Windscreen heating.
 – Submenu for air conditioning settings
 – Adjusts the blower speed.
 – Switches cooling system on and off.
 – Air distribution to the upper body via the vents in the dash panel.
 – Air distribution to footwell.
 – Air distribution to the windscreen.
 – Switches air recirculation mode on and off.
Presettings – submenu for presettings
 – Switches automatic mode on.
 – Switches maximum cooling output on or off.
 – Switches the defrost function on or off.
 – Display for manual control of the cooling system.
Air conditioning profiles
Air con. profile – Adjusts the blower speed in  mode.
Rear controls
Fig. 111 In the rear centre console: controls for the rear seats.
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Temperature
•Press the  and ⇒ Fig. 111 buttons to set the temperature.
Setting the temperature using the Infotainment system
•Press the  button on the control panel.
•Touch the function button for the temperature for the rear row of seats.
•Touch the  and  function buttons to set the temperature.
The display now shows the set temperature. 

 – Seat heating
Press the buttons  or  to switch the seat heating on and off ⇒ Seat heating.
If the  function button is activated in the Infotainment system, it is not possible to 
operate the rear controls.
Air recirculation mode
First read and observe the introductoryinformation and safety warnings⇒
Introduction
In air recirculation mode, no outside air enters the vehicle interior.
Manual air recirculation mode
•Press the  button on the control panel to switch manual air recirculation mode on 
and off.
Automatic air recirculation mode (Climatronicyf
In 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.
•Press the  button on the control panel.
•Touch function button .
•Touch the Automatic air recirculation function button.
Air recirculation mode with Air Care Climatronic
The vehicle is fitted with an allergen filter. When Air Care is activated ⇒ Air Care Climatronic, the 
air recirculation mode of the air conditioning system is maximised as far as is permitted by the risk 
of window fogging depending on the interior humidity and outside temperature. The air recirculation 
mode is automatically regulated and features continuous adjustment in order to prevent fatigue of 
the vehicle occupants.
When is the air recirculation mode deactivated?
Air recirculation mode is deactivated in the following situations ⇒:
•If the  button on the Climatronic control panel is pressed.
•If the air distribution regulator of the manual air conditioning system is turned to  position.
•If the sensor detects that the vehicle's windows might mist up.
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.
•m/k/a999MK Climatronic
If the outside temperature is very high, brief activation of manual air recirculation mode helps 
to cool the vehicle interior more quickly.
Seat heating
First read and observe the introductoryinformation and safety warnings⇒
Introduction
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, the windows can mist up very quickly in air 
recirculation mode and reduce visibility considerably.
•Switch off the air recirculation mode when it is no longer required.
WARNING
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 evaporator and the dust and pollen 
filter with pollution filter insert, producing a lasting unpleasant odour.
NOTICE 

The seat cushions and backrests can be heated electrically when the ignition is switched on.
Operating the seat heating
•Press the button  or  in the control panel in order to switch the seat heating to 
the highest setting.
•Press the  or  button until the desired setting is reached.
•To switch the seat heating off, press the button  or  repeatedly until the LEDs go 
out.
If the ignition is turned on again within around 10 minutes, the most recent driver seat temperature 
setting is automatically activated.
When is it not advisable to switch on the seat heating?
Do not switch on the seat heating if one of the following conditions applies:
•The seat is not occupied.
•The seat is fitted with a protective cover.
•A child seat is installed on the seat.
•The seat cushion is damp or wet.
•The temperature in the vehicle interior or the outside temperature is above +25°C (77°Fyf .
To save fuel, only switch on the seat heating for as long as necessary.
Steering wheel heating
First read and observe the introductoryinformation and safety warnings⇒
Introduction
The steering wheel heating works when the engine is running.
Switching steering wheel heating on and off automatically via the 
Infotainment system
•m/k/a995MKManual air conditioning system: press the  button on the 
Infotainment system and touch the Vehicle and  function buttons.
•m/k/a995MKClimatronic: press the  button on the control panel.
•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 in vehicles with Climatronicyf
•Press the  button on the control panel.
Anyone experiencing reduced sensitivity to pain or temperature due to medication, 
paralysis or chronic illness (e.g. diabetesyf  F R X O G  V X V W D L Q  E X U Q V  R Q  W K H  E D F N   E X W W R F N V  D Q G  
legs when using the seat heating. These burns may take a long time to heal or may never 
heal fully. Please consult a doctor if you have questions about your own state of health.
•Anyone experiencing reduced sensitivity to pain or temperature should never use the 
seat heating.
WARNING
Wet upholstery can cause a fault in the seat heating and increase the risk of burns.
•Ensure that the seat cushion is dry before the seat heating is used.
•Do not sit on the seat when wearing damp or wet clothing.
•Do not set any damp or wet objects or items of clothing on the seat.
•Do not spill any liquids on the seat.
WARNING
•To avoid damaging the heating elements, do not kneel on the seat or apply sharp 
pressure at a single point on the seat cushion and backrest.
•Liquids, sharp objects and insulating materials, such as a protective cover or child 
seat, may damage the seat heating.
•If the system starts to produce an odour, switch off the seat heating immediately and 
have it checked by a qualified workshop.
NOTICE 

•Touch the  function button.
•Touch the Steering wheel & seat heating linked function button to pair the steering 
wheel heating with the seat heating.
•Press the  button to switch the steering wheel heating on or off with the seat heating.
Selecting a temperature setting (only in vehicles with Climatronicyf
•Press the  button on the control panel.
•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's seat switched off (if 
Steering wheel & seat heating linked is activeyf .
•Power consumption too high.
•Fault in steering wheel heating system.
Windscreen heating
First read and observe the introductoryinformation and safety warnings⇒
Introduction
The windscreen heating works when the engine is running.
Manual windscreen heating
•m/k/a995MKManual air conditioning system: press the  button on the 
Infotainment system and touch the Vehicle and Settings function buttons.
•m/k/a995MKClimatronic: press the  button on the control panel.
•Touch the  function button to switch windscreen heating on or off.
The windscreen heating switches itself off depending on the outside temperature or after 8 minutes 
at the latest.
Automatic windscreen heating
The windscreen heating switches on automatically if there is a risk of condensation building up on 
the windscreen or windows.
•Press the  button on the control panel.
•Touch the  function button in the Infotainment system.
•Touch the Automatic windscreen heating function button to switch automatic 
windscreen heating on or off.
The automatic windscreen heating is also active when the air conditioning system is switched off.
Windscreen heating using the defrost function
The windscreen heating will be switched on when the defrost function is switched on and a sensor 
detects that the windscreen may mist up.
Switch-off conditions
The windscreen heating switches itself off if one of the following conditions is met:
•Power consumption too high.
•Fault in air conditioning system.
•Specified time has elapsed.
Tips and usage notes
First read and observe the introductoryinformation and safety warnings⇒
Introduction
The following tips and operating information will help you use the system correctly. 

Why does the cooling system switch off automatically or cannot be 
switched on?
•The engine is not running.
•The blower is switched off.
•The air conditioning system fuse has blown.
•The ambient temperature is lower than approximately +3°C (+38°Fyf .
•The air conditioning compressor of the cooling system has been temporarily switched off 
because the engine coolant temperature is too high.
•There is a vehicle fault. The air conditioning system should be checked by a qualified workshop.
Settings for optimal road visibility
•Keep the air intake in front of the windscreen free from ice, snow or leaves to improve the 
heating and cooling performance and prevent condensation on the windows ⇒ 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.
•The maximum heating output and the fastest window defrosting results are achieved when the 
coolant has reached its operating temperature.
Recommended settings for the heating and fresh air system or 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.
•Manual air conditioning system: press the  button on the control panel to switch the 
cooling system on.
Recommended Climatronic setup
•Press the  button.
•Set the temperature to +22°C (+72°Fyf .
•Open and position the vents on the dash panel.
Air Care Climatronic
The allergen filter of Air Care Climatronic can additionally reduce the amount of pollutants and also 
allergens that enter the vehicle interior.
The filters must be changed regularly to avoid impairing the performance of the air conditioning 
system. If the vehicle is frequently used in severely polluted air, the filter must be replaced between 
service events.
•Press the  button on the control panel.
•Touch the Air Care function button.
•Touch the Active function button to switch the Air Care function on or off.
Dust and pollen filter
The dust and pollen filter must be replaced regularly to prevent impaired performance of the manual 
air conditioning system. If the vehicle is frequently used in severely polluted air, the filter must be 
replaced between service events.
Water under the vehicle
If the humidity and temperature outside the vehicle are high, condensation can drip off the 
evaporator in 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.
Auxiliary heater and ventilation
 Introduction
This chapter contains information on the followingsubjects:
⇒ Switching the auxiliary heater and auxiliary ventilation on and off
⇒ Programming the auxiliary heater and auxiliary ventilation
⇒ Remote control 

The auxiliary heater runs on for a short time after it is switched off manually or automatically so that 
the remaining fuel in the system can be burnt off.
When the vehicle is at a standstill, the auxiliary heater can be activated up to three times in 
succession for the maximum operating duration.
Operating noises can be heard if the auxiliary heater is switched on.
The 12-volt battery will discharge if the auxiliary heater or ventilation is run several times 
over an extended period. Drive the vehicle for an appropriate distance in order to recharge the 12-
volt vehicle battery.
When parked on an incline, the fuel gauge indication (just above the reserve quantityyf  P D \  
be inaccurate and lead to functional restrictions of the auxiliary heater.
The auxiliary heater may switch on automatically as a supplementary heating measure when 
the engine is started at temperatures below +5°C (+41°Fyf   7 K H  V X S S O H P H Q W D U \  K H D W L Q J  I X Q F W L R Q  L V  
switched off again automatically after a short time.
Programming the auxiliary heater and auxiliary 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.
m/k/a997MK Manual air conditioning system
•Press the  button on the Infotainment system.
•Touch the Vehicle and  function buttons.
m/k/a997MK Climatronic
•Press the  button on the control panel.
•Touch the  function button.
Changing the operating mode
•Open the Auxiliary heater menu.
•Touch the Heating or Ventilation function buttons to change the operating mode.
At high outside temperatures, the auxiliary ventilation function supplies fresh air to the vehicle 
interior and helps prevent a build-up of heat.
Programming the auxiliary heater
Activation is always for one heating or ventilation period only. The departure time must be activated 
for every start.
•Before programming, check that the date and time set in the vehicle are correct ⇒ Vehicle 
settings menu.
•Open the Auxiliary heater menu.
•Press the Adjust button.
•Choose one of the memory locations for a Departure time.
•Touch the Activate function button.
m/k/a995MKManual air conditioning system: the programmed departure time determines 
the time at which the auxiliary heater or ventilation should switch off. The point at which the heating 
or ventilation process starts is determined depending on the programmed operating period.
m/k/a995MK Climatronic: on the basis of the programmed departure time, the vehicle 
automatically calculates the start time for heating or ventilation to the currently set temperature 
depending on the outside temperature.
•Touch the Running time function button under Adjust to set the auxiliary heater 
running time after the heater is switched on with the immediate heat button  or using the 
remote control.