When you select a user account, the saved vehicle settings are activated.
User management and settings
When the ignition is switched on, you can use the Personalisation menu in the Infotainment system
for user management and to make settings. The menu can be accessed via the vehicle settings in the
Infotainment system.
Changing the user account
You can select the user account either via the Personalisation menu or via the Vehicle status menu.
Manually assigning vehicle keys to user accounts
You can assign a vehicle key to the currently active user account. For this purpose, select Manual key
assignment.
Automatically assigning vehicle keys to user accounts
If you have selected Automatic key assignment, the following vehicle key is assigned to the user
account upon changing the user account:
Vehicles without Keyless Access: vehicle key used to unlock the vehicle.
Vehicles with Keyless Access: vehicle key that is identified first by the personalisation function
when you open the driver door.
Personalised vehicle settings
Opening and closing (single door unlocking, window convenience opening etc.)
Light and vision (daytime running lights, cornering light, lane change flash etc.)
Settings for air conditioning system
Active driver assist systems
Driving profile selection
Multifunction display and instrument cluster (selection of displays)
Infotainment system (display brightness and station sorting)
A new vehicle key will be assigned to the current user account. To assign the vehicle key to a
different user account, select the required user account and manually assign it to the vehicle key.
Safety
WARNING
Incorrect use of turn signals, a failure to use turn signals, or forgetting to switch off a turn signal can
confuse other road users. This could lead to accidents and serious injuries.
Always activate the turn signal in good time when changing lanes and performing overtaking or
turning manoeuvres.
Always switch off the turn signal once the lane change or overtaking or turning manoeuvre has been
completed.
The hazard warning lights also work when the ignition is switched off ⇒ In an emergency .
Some settings can be stored in the user accounts of the personalisation function and therefore
change when the user account changes ⇒ Personalisation .
Vehicle lighting
Switching lights on and off
Fig. 79 Next to the steering wheel: light switch (one variant).
Switching lights on
Switch on the ignition.
Turn the light switch to the appropriate position:
Automatic headlights: dipped beam is switched on or off depending on the brightness level
and the weather ⇒ , ⇒ Automatic headlights .The side lights and daytime running
lights are switched on. The symbol in the light switch lights up green.The dipped beam headlights
are switched on.
Switching lights off
Switch off the ignition.
Turn the light switch to the appropriate position:
The lights are switched off.Leaving Home function (orientation lighting) can be switched on
⇒ Coming Home and Leaving Home function (orientation lighting) .Side lights or continuous
parking light on both sides of the vehicle switched on ⇒ Switching the parking lights on and off . The
symbol in the light switch lights up green.Dipped beam is switched off – the side lights will stay
on as long as the vehicle key is in the ignition lock or, in vehicles with Keyless Access, the driver door
is closed.
Daytime running lights
The daytime running lights (dependent on equipment level) can increase the visibility of your vehicle
in traffic during the day.
The daytime running lights are switched on every time the ignition is switched on when the light
switch is in position , or (when brightness is detected).
The daytime running lights cannot be switched on or off manually.
WARNING
Accidents and serious injuries can occur if the road is not sufficiently illuminated and other road
users have difficulty seeing the vehicle, or cannot see it at all.
The light assist systems are designed only to provide support; the driver is responsible for the
correct vehicle lights being switched on.
Always switch on the dipped beam headlights if it is dark, raining or visibility is poor.
WARNING
The side lights or daytime running lights are not bright enough to illuminate the road ahead and to
ensure that other road users are able to see you.
Always switch on the dipped beam headlights if it is dark, raining or visibility is poor.
The tail light clusters are not switched on with the daytime running lights. If the tail light clusters are
not switched on, the vehicle may not be visible to other road users if it is dark, raining, or if visibility
is poor.
WARNING
The automatic headlights ( ) switch dipped beam on and off only when there is a change in
the level of brightness.
Switch on dipped beam manually if required by the weather conditions, e.g. in fog.
When reverse gear is engaged, the cornering light on both sides of the vehicle switches on to
provide better illumination of the surrounding area when manoeuvring.
Switching the fog lights on and off
Switching on the front fog lights : pull the light switch ⇒ Fig. 79 out to the first position. The
indicator lamp in the light switch lights up green.
Switching on the rear fog light : pull the light switch all the way out. The indicator lamp in the
instrument cluster lights up yellow.
To switch the fog lights off, press in the light switch or turn it to position .
When the automatic headlights are switched on and the front or rear fog lights are switched
on, the dipped beam headlights will also be switched on irrespective of the current light conditions
outside.
In vehicles with a factory-fitted towing bracket: the vehicle's rear fog light is not switched on if a
trailer with rear fog light is electrically connected to the vehicle ⇒ Trailer towing .
Light functions
Side lights
If the side lights are switched on, both headlights light up with the side lights, parts of the tail
light clusters, the number plate lighting and the buttons in the centre console and the dash panel.
The daytime running lights also switch on when the ignition is switched on.
If the vehicle is not locked from outside when the ignition is switched off, the continuous parking
light on both sides of the vehicle switches on automatically after around 10 minutes to reduce 12-
volt vehicle battery discharge ⇒ Switching the parking lights on and off .
Automatic headlights
If the automatic headlights are switched on, the vehicle lighting and the instrument and
switch lighting will switch on and off according to the light conditions. When the lights are switched
on, the indicator lamp lights up yellow.
The automatic headlights are merely an aid and will not always be able to detect all driving
situations.
In vehicles with a corresponding equipment level, the switch-on time of the automatic headlights
can be adjusted in the Infotainment system in the Vehicle settings menu ⇒ Infotainment system
controls and displays .
Cornering light
A cornering light is switched on when turning slowly or travelling around very tight bends.
Signal tones if lights are not switched off
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 .
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.
To save fuel, switch the seat heating off as quickly as possible.
Steering wheel heating
First read and observe the introductoryinformation and safety warnings⇒Introduction
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⇒Introduction
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.