
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. 

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. 

Fig. 137 Left-hand side of the multifunction steering wheel: buttons for operating the cruise control 
system.
Fig. 138 On the instrument cluster display: cruise control system status displays (illustrationyf .
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Key to ⇒ Fig. 138:
Cruise control system not regulating, stored speed shown small or darkened.
System fault. Go to a qualified workshop.
Cruise control system not regulating, no speed stored.
Cruise control system regulating, stored speed displayed in large figures.
Switching on
•Press the  or  button.
No speed has been stored and the speed is not yet controlled.
Starting control
•Press the  button while driving.
The current speed is stored and controlled. The green indicator lamp  .
Setting the speed
You can adjust the stored speed during speed control by the cruise control system:
+ 1 km/h (1 mphyf- 1 km/h (1 mphyf+ 10 km/h (5 mphyf- 10 km/h (5 mphyf
Press and hold the button  or  to continuously change the stored speed. The vehicle 
adapts the current speed by accelerating or closing the throttle. The vehicle does not actively brake.
Interrupting control
•Briefly press the button  or . Alternatively, depress the brake pedal.
The speed remains stored in the memory.
Resuming control
•Press the  button.
The stored speed is resumed and controlled.
Switching off
•Press and hold the  button.
The cruise control system is switched off and the stored speed is deleted.
Changing to the speed limiter
•Press the  button.
The cruise control system is switched off.