Page 100 of 327

98Instruments and controlsOverviewOTurn signal 3 103XSeat belt reminder 3 103vAirbag and belt tensioners
3 104VAirbag deactivation 3 104pCharging system 3 104ZMalfunction indicator light
3 105RBrake and clutch system
3 105-Operate pedal 3 105mElectric parking brake
3 105jElectric parking brake fault
3 105uAntilock brake system (ABS)
3 106[Upshift 3 106RGear shifting 3 106cVariable effort steering
3 106EFollowing distance 3 106)Lane departure warning
3 106rUltrasonic parking assist
3 106nElectronic Stability Control
off 3 107bElectronic Stability Control
and Traction Control system
3 107kTraction Control system off
3 107WEngine coolant temperature
3 107!Preheating 3 107%Diesel particle filter 3 107YAdBlue 3 108wTyre pressure monitoring
system 3 108IEngine oil pressure 3 108i or
YLow fuel 3 108dImmobiliser 3 109DAutostop 3 1098Exterior light 3 109CHigh beam 3 109lHigh beam assist 3 109fAdaptive forward lighting
3 109>Fog light 3 109rRear fog light 3 109mCruise control 3 109C or
mAdaptive cruise control
3 109AVehicle detected ahead
3 110LSpeed limiter 3 110
Page 109 of 327

Instruments and controls107or
Interference due to external sources
of ultrasound. Once the source of interference is removed, the system
will operate normally.
Have the cause of the fault in the
system remedied by a workshop.
Ultrasonic parking assist 3 196.
Electronic Stability Control off
n illuminates yellow.
The system is deactivated.
Electronic Stability Control and Traction Control system
b illuminates or flashes yellow.
Illuminates
A fault in the system is present.
Continued driving is possible. Driving stability, however, may deteriorate
depending on road surface
conditions.
Have the cause of the fault remedied
by a workshop.Flashes
The system is actively engaged.
Engine output may be reduced and
the vehicle may be braked
automatically to a small degree.
Electronic Stability Control 3 176,
Traction Control system 3 175.
Traction Control system off
k illuminates yellow.
The system is deactivated.
Engine coolant temperature W illuminates red.
Illuminates when the engine is
running
Stop, switch off engine.Caution
Coolant temperature too high.
Check coolant level immediately
3 229.
If there is sufficient coolant, consult a
workshop.
Preheating
! illuminates yellow.
Preheating of diesel engine is
activated. Only activates when
outside temperature is low.
Diesel particle filter % illuminates or flashes yellow.
The diesel particle filter requires
cleaning.
Continue driving until %
extinguishes. If possible, do not allow engine speed to drop below
2000 rpm.
Illuminates
The diesel particle filter is full. Start
cleaning process as soon as
possible.
Page 122 of 327

120Instruments and controls● vehicle battery status
● selective catalytic reduction, diesel exhaust fluid (DEF),
AdBlue 3 164
Messages in the
Colour-Info-Display
Some important messages may
appear additionally in the
Colour-Info-Display. Press the
multifunction knob to confirm a
message. Some messages only pop-
up for a few seconds.
Warning chimes
When starting the engine or whilst driving
Only one warning chime will sound at a time.
The warning chime regarding not
fastened seat belts has priority over
any other warning chime.
● If seat belt is not fastened.
● If a door or the tailgate is not fully
closed when starting off.● If a certain speed is exceeded with parking brake applied.
● If adaptive cruise control deactivates automatically.
● If approaching a vehicle ahead too closely.
● If a programmed speed or speed
limit is exceeded.
● If a warning message appears in the Driver Information Centre.
● If the electronic key is not in the passenger compartment.
● If the parking assist detects an object.
● If an unintended lane change occurs.
● If the diesel particle filter has reached the maximum filling
level.
● If AdBlue needs to be refilled.
When the vehicle is parked and/or the driver's door is opened
● With exterior lights on.
● If the trailer hitch is not engaged.During an Autostop
● If the driver's door is opened.
Battery voltage
When the vehicle battery voltage is
running low, a warning message will
appear in the Driver Information
Centre.
1. Switch off any electrical consumers which are not requiredfor a safe ride, e.g. seat heating,
heated rear window or other main consumers.
2. Charge the vehicle battery by driving continuously for a while or
by using a charging device.
The warning message will disappear
after the engine has been started
twice without a voltage drop.
If the vehicle battery cannot be
recharged, have the cause of the fault
remedied by a workshop.
Page 142 of 327

140Climate controlClimate controlClimate control systems.............140
Air conditioning system ...........140
Automatic climate control system .................................... 142
Dual automatic climate control system .................................... 147
Auxiliary heater ........................151
Air vents ..................................... 151
Adjustable air vents .................151
Fixed air vents ......................... 152
Maintenance .............................. 152
Air intake ................................. 152
Pollen filter ............................... 152
Air conditioning regular operation ................................ 153
Service .................................... 153Climate control systems
Air conditioning system
Controller and buttons for the
following functions:
● temperature TEMP
● air distribution l M K
● fan speed Z
● cooling A/C
● air recirculation 4
● demisting and defrosting V
Heated rear window Ü 3 42.
Heated seats ß 3 53.
Ventilated seats A 3 53.
Heated steering wheel * 3 85.
Temperature TEMP
Turn controller:
red:warmblue:cold
Heating will not be fully effective until
the engine has reached normal
operating temperature.
Page 146 of 327

144Climate control● Set temperature by turningcontroller TEMP. Suggested
comfort setting is 22 °C.
● Open all air vents to allow optimised air distribution in
automatic mode.
Setting of fan speed regulation in
automatic mode can be changed in the vehicle personalisation menu in
the Colour-Info-Display.
Select the relevant setting in Settings,
I Vehicle in the Colour-Info-Display.
Colour-Info-Display 3 117.
Vehicle personalisation 3 121.
Temperature preselection TEMPSet temperature by turning controller
TEMP to the desired value.
Selected temperature is indicated in
the climate display.
If the minimum temperature Lo is set,
the climate control system runs at maximum cooling, if cooling A/C is
switched on.
If the maximum temperature Hi is set,
the climate control system runs at
maximum heating.
Notice
If AC is switched on, reducing the set
cabin temperature can cause the
engine to restart from an Autostop or inhibit an Autostop.Demisting and defrosting the
windows V
●
Press V. Activation is indicated
by the LED in the button.
● Temperature and air distribution are set automatically and the fan
runs at high speed.
● Switch on heated rear window Ü.
● To return to previous mode: press V. To return to automatic
mode: press AUTO.
Setting of automatic rear window heating can be changed in the vehicle personalisation menu in the Colour-
Info-Display.
Page 150 of 327

148Climate controlBasic setting for maximum comfort:● Press AUTO, the air distribution
and fan speed are regulated
automatically. Activation is
indicated by the LED in the
button.
● Press A/C to switch on optimal
cooling and demisting. Activation is indicated by the LED in the
button.
● Set temperature by touching R or
S on the driver side. Suggested
comfort setting is 22 °C.
Temperature can be set
differently for driver and
passenger. Touch R or S on the
passenger side to allow different
temperature zones.
● Open all air vents to allow optimised air distribution in
automatic mode.
Setting of fan speed regulation in
automatic mode can be changed in
the vehicle personalisation menu in
the Colour-Info-Display.
Select the relevant setting in Settings,
I Vehicle , in the Colour-Info-Display.
Colour-Info-Display 3 117.Vehicle personalisation 3 121.
Temperature preselection SR
Set desired temperature by touching
R for higher temperatures or S for
lower temperatures.
Selected temperature is indicated in
the panels. Using driver's side panel
changes temperatures for both sides (when SYNC is selected), while using
the passenger side panel changes
only the passenger side temperature and turns off SYNC, (if selected
before).
If the minimum temperature Lo is set,
the climate control system runs at
maximum cooling, if cooling A/C is
switched on.
If the maximum temperature Hi is set,
the climate control system runs at maximum heating.
Notice
If AC is switched on, reducing the set
cabin temperature can cause the
engine to restart from an Autostop or
inhibit an Autostop.
Dual zone temperature
synchronisation SYNC
Press SYNC to link passenger side
temperature setting to the driver side.
Activation is indicated by the LED in
the button.
When passenger side settings will be adjusted, the LED extinguishes.
Page 151 of 327

Climate control149Demisting and defrosting the
windows V
●
Press V. Activation is indicated
by the LED in the button.
● Temperature and air distribution are set automatically and the fan
runs at high speed.
● Switch on heated rear window Ü.
● To return to previous mode: press V. To return to automatic
mode: press AUTO.
Setting of automatic rear window heating based on cool outside
temperatures can be changed in the
vehicle personalisation menu in the
Colour-Info-Display.
Select the relevant setting in Settings,
I Vehicle in the Colour-Info-Display.
Colour-Info-Display 3 117.
Vehicle personalisation 3 121.
Notice
If V is pressed while the engine is
running, an Autostop will be inhibited
until V is pressed again.
If V is pressed while the engine is
in an Autostop, the engine will restart automatically.
Stop-start system 3 159.
Manual settings
Climate control system settings can
be manually adapted by using the air
distribution buttons and the fan speed controller as follows. Manual
changing of settings will deactivate
the automatic mode.Fan speed SZR
Touch ZS or R. The selected fan
speed is indicated in the Info-Display for a short time.
If the fan is switched off, the air
conditioning is also deactivated.
To return to automatic mode: Press AUTO .
Page 155 of 327
Climate control153Active carbon filter
In addition to the particle filter, the active carbon filter reduces odours.
Air conditioning regularoperation
In order to ensure continuously
efficient performance, it is
recommended that air conditioning
should be operated for a few minutes once a month, irrespective of the
weather and time of year.
Service
For optimal cooling performance, it is recommended to annually check the
climate control system, starting
three years after initial vehicle
registration, including:
● functionality and pressure test
● heating functionality
● leakage check
● check of drive belts
● cleaning of condenser and evaporator drainage
● performance check