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122Instruments and controlsVehicle messagesMessages are indicated in the Driver
Information Centre, in some cases
together with a warning and signal
chime.
On Midlevel display press SET/CLR
on the turn signal lever to confirm a
message.
On Uplevel display press 9 on the
steering wheel to confirm a message.
Vehicle and service messages
The vehicle messages are displayed
as text. Follow the instructions given
in the messages.
Messages in the
Colour-Info-Display
Some important messages may
appear additionally in the
Colour-Info-Display. Some
messages only pop-up for a few
seconds.
Warning chimes
When starting the engine or whilstdriving
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.
Page 139 of 305

Lighting137The following lighting functions are
available with light switch in position
AUTO or 9.
Town light
Activated automatically at a speed up to approx. 55 km/h and in situations
with exterior ambient light. The light is
wide and symmetrical. A special
beam pattern is designed to avoid
glare for other road users.
Country light
Activated automatically at a speed
above approx. 55 km/h when driving
in rural areas. The illumination of the
current lane and the side of the road is improved. Oncoming and
preceding vehicles are not dazzled.
Curve light
Particular LEDs, based on steering
angle and speed, are additionally
triggered to improve lighting in
curves. This function is activated at
speeds from 40 km/h to 70 km/h and
reacts to steering angle.
Corner light
When turning off, depending on the
steering angle and the turn signal light, particular LEDs are triggered
which illuminate the direction of
travel. It is activated up to a speed of
40 km/h.
Reverse parking function To assist driver's orientation when
parking, both corner lights and
reversing light illuminate when
headlights are on and reverse gear is
engaged. They remain illuminated for
a short time after disengaging reverse gear or until driving faster than
7 km/h in a forward gear.
High beam assist This feature allows the high beam to
function as main driving light at night.
The camera in the windscreen
detects the lights of oncoming or
preceding vehicles. Each LED on
right or left side can be triggered or
faded out particulary according to the
traffic situation. This gives the best
light distribution without glaring other
road users. Once activated, high
beam assist remains active and
switches high beam on and off
depending on surrounding
Page 142 of 305
140Lighting
The illustrations show different
versions.
In the event of an accident with airbag
deployment, the hazard warning
flashers are activated automatically.
Turn and lane-change
signalslever up:right turn signallever down:left turn signal
If the lever is moved past the
resistance point, the turn signal is
switched on constantly. When the
steering wheel moves back, the turn
signal is automatically deactivated.
For three flashes, e.g. when changing
lanes, press the lever until resistance
is felt and then release.
With a trailer connected, turn signal
flashes six times and tone frequency
changes when pressing the lever until resistance is felt and then releasing.
Move the lever to the resistance point
and hold for longer indication.
Switch the turn signal off manually by
moving the lever to its original
position.
Front fog lights
Operated by pressing >.
Light switch in position AUTO:
switching on front fog lights will switch headlights on automatically.
Page 147 of 305

Climate control145Climate controlClimate control systems.............145
Heating and ventilation system 145
Air conditioning system ...........146
Electronic climate control system .................................... 148
Auxiliary heater ........................153
Air vents ..................................... 153
Adjustable air vents .................153
Fixed air vents ......................... 153
Maintenance .............................. 154
Air intake ................................. 154
Pollen filter ............................... 154
Air conditioning regular
operation ................................ 154
Service .................................... 154Climate control systems
Heating and ventilation system
Controls for: ● temperature
● air distribution l, M and K
● fan speed Z
● demisting and defrosting V
Heated rear window Ü 3 43.
Heated exterior mirrors Ü 3 40.
Heated seats ß 3 54.
Heated steering wheel * 3 92.
Temperaturered:warmblue:cold
Heating will not be fully effective until
the engine has reached normal
operating temperature.
Air distribution
l:to windscreen and front door
windowsM:to head area via adjustable air
ventsK:to foot well and windscreen
All combinations are possible.
Fan speed Adjust the air flow by switching the fan
to the desired speed.
Page 148 of 305

146Climate controlDemisting and defrosting
●Press V: the air distribution is
directed towards the windscreen.
● Set temperature control to warmest level.
● Set fan speed to highest level.
● Switch on heated rear window Ü.
● Open side air vents as required and direct them towards the doorwindows.
Air conditioning system
Controls for:
● temperature
● air distribution l, M and K
● fan speed Z
● demisting and defrosting V
A/C:cooling4:air recirculationÜ:heated rear window
Heated rear window Ü 3 43.
Heated exterior mirrors Ü 3 40.
Heated seats ß 3 54.
Ventilated seats A 3 54.
Heated steering wheel A 3 92.
Cooling A/C
Press A/C to switch on cooling. The
LED in the button illuminates to
indicate activation. Cooling is only
functional when the engine is running and climate control fan is switched on.
Press A/C again to switch off cooling.
The air conditioning system cools and
dehumidifies (dries) as soon as the
outside temperature is slightly above
the freezing point. Therefore
condensation may form and drip from under the vehicle.
Page 151 of 305
Climate control149Heated exterior mirrors Ü 3 40.
Heated seats ß 3 54.
Ventilated seats A 3 54.
Heated steering wheel A 3 92.
Each change of settings is shown in
the Info-Display for a few seconds.
The electronic climate control system
is only fully operational when the
engine is running.
Automatic mode AUTO
Basic setting for maximum comfort:
● Press AUTO, the air distribution
and fan speed are regulated
automatically.
● Open all air vents to allow optimised air distribution in
automatic mode.
● Press A/C to switch on optimal
cooling and demisting. The LED in the button illuminates to
indicate activation.
● Set the preselected temperatures for driver and front
passenger using the left and right
rotary knob. Recommended
temperature is 22 °C.
The fan speed regulation in automatic mode can be changed in the Settings menu.
Vehicle personalisation 3 123.
Temperature preselection
Page 157 of 305

Driving and operating155Driving and
operatingDriving hints ............................... 156
Control of the vehicle ...............156
Steering ................................... 156
Starting and operating ...............156
New vehicle running-in ............156
Ignition switch positions ...........156
Power button ........................... 157
Retained power off ..................158
Starting the engine ..................159
Overrun cut-off ........................ 161
Stop-start system ....................161
Parking .................................... 164
Engine exhaust .......................... 165
Diesel particle filter ..................166
Catalytic converter ...................166
Automatic transmission ..............167
Transmission display ...............167
Selector lever .......................... 167
Manual mode ........................... 168
Electronic driving programmes 169
Fault ........................................ 169
Interruption of power supply ....169
Manual transmission ..................170Manual transmission automa‐
ted .............................................. 171
Transmission display ...............171
Selector lever .......................... 172
Manual mode ........................... 173
Electronic driving programmes 173
Fault ........................................ 173
Brakes ........................................ 174
Antilock brake system .............174
Parking brake .......................... 175
Brake assist ............................. 177
Hill start assist ......................... 177
Ride control systems .................177
Traction Control system ..........177
Electronic Stability Control ......178
Sport mode .............................. 179
Driver assistance systems .........180
Cruise control .......................... 180
Speed limiter ........................... 182
Adaptive cruise control ............184
Forward collision alert .............191
Following distance indication ...194
Active emergency braking .......195
Parking assist .......................... 198
Side blind spot alert .................205
Rear view camera ...................207
Traffic sign assistant ................209
Lane keep assist .....................213Fuel............................................ 215
Fuel for petrol engines .............215
Fuel for diesel engines ............215
Refuelling ................................ 215
Fuel consumption - CO 2-
Emissions ............................... 216
Trailer hitch ................................ 217
General information .................217
Driving characteristics and towing tips .............................. 218
Trailer towing ........................... 218
Towing equipment ...................219
Trailer stability assist ...............222
Page 158 of 305

156Driving and operatingDriving hints
Control of the vehicle
Never coast with engine not
running
Many systems will not function in this situation ( e.g. brake servo unit, power
steering). Driving in this manner is a
danger to yourself and others.
All systems function during an
Autostop.
Stop-start system 3 161.
Idle boost
If charging of the vehicle battery is
required due to battery condition, the
power output of the generator must
be increased. This will be achieved by an idle boost which may be audible.
A message appears in the Driver
Information Centre.
Pedals
To ensure the pedal travel is
uninhibited, there must be no mats in
the area of the pedals.Use only floor mats, which fit properly and are fixed by the retainers on the
driver side.
Steering If power steering assist is lost
because the engine stops or due to a system malfunction, the vehicle can
be steered but may require increased
effort.Starting and operating
New vehicle running-in Do not brake unnecessarily hard for
the first few journeys.
During the first drive, smoke may
occur because of wax and oil
evaporating off the exhaust system.
Park the vehicle in the open for a
while after the first drive and avoid
inhaling the fumes.
During the running-in period, fuel and engine oil consumption may be
higher.
Additionally, the cleaning process of
the diesel particle filter may take
place more often.
Diesel particle filter 3 166.
Autostop may be inhibited to allow for
charging of the vehicle battery.
Ignition switch positions
Turn key: