132Climate controlclockwise:increaseanticklockwise:decrease
Air recirculation system u
Press u to activate air recirculation
mode. The LED in the button
illuminates to indicate activation.
Press u again to deactivate air
recirculation mode.
9 Warning
The exchange of fresh air is
reduced in air recirculation mode.
In operation without cooling the air humidity increases, so the
windows may mist up from inside.
The quality of the passenger
compartment air deteriorates,
which may cause the vehicle
occupants to feel drowsy.
In warm and very humid ambient air conditions, the windscreen may mist
up from outside when cold air is
directed towards it. If windscreen
mists up from outside, activate
windscreen wiper and deactivate l.
Demisting and defrosting
● Press l: the air distribution is
directed towards the windscreen.
● Set temperature controller n to
warmest level.
● Set fan speed x to highest level.
● Switch on heated rear window e.
● Open side air vents as required and direct them towards the doorwindows.
Heated rear window, windscreen and exterior mirrors b 3 43.
Heated seats ß 3 51.
Air conditioning system
Controls for: ● temperature n
● air distribution l, M and K
● fan speed x
Climate control133● cooling A/C
● air recirculation u
● heated rear window and exterior mirrors e
Heated rear window e3 43.
Heated exterior mirrors e3 39.
Temperature n
Adjust the temperature by turning n to
the desired temperature.HI:warmLO:cold
Heating will not be fully effective until
the engine has reached normal
operating temperature.
Air distribution l,
M ,
K
l:to windscreen and front door
windowsM:to head area via adjustable air
ventsK:to foot well
All combinations are possible.
Fan speed x
Adjust the air flow by turning x to the
desired speed.clockwise:increaseanticlockwise:decrease
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 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.
If no cooling or drying is required,
switch off the cooling system for fuel
saving reasons.
Activated cooling may inhibit
Autostops. Stop-start system 3 148.
Air recirculation system u
Press u to activate air recirculation
mode. The LED in the button
illuminates to indicate activation.
Press u again to deactivate air
recirculation mode.
136Climate control● Air conditioning must beactivated for optimal cooling and
demisting. Press A/C to switch on
air conditioning. The LED in the
button indicates activation.
● Set the preselected temperatures for driver and front
passenger using the left and right rotary ring. Recommended
temperature is 22 °C.
Press successively AUTO to select
the desired automatic settings:
● Soft Auto for a soft and silent air
distribution.
● Auto for thermal comfort and
silent air distribution.
● Auto Fast for a dynamic and
efficient air distribution.
Manual settings
Climate control system settings can
be changed by activating the
following functions:Fan speed rs
Adjust the air flow by turning rotary
ring to the desired speed. Turn
anticlockwise to decrease or turn
clockwise to increase.
Turn rotary ring anticlockwise as far
as it will go: fan and cooling are
switched off.
Press r to increase or s to
decrease the air flow.
To return to automatic mode, press
AUTO .
Air distribution w
Press w sucessively until the desired
direction of the air distribution is
displayed:
t:to windscreen and front door
windowsu:to head area and rear seats via
adjustable air ventsv:to front and rear foot wellw:to windscreen and front door
windows, to head area and rear
seats via adjustable air vents, to
front and rear foot well
Combinations of different air
distribution options can be select by
pressing w sucessively.
Driving and operating143Driving and
operatingDriving hints ............................... 144
Control of the vehicle ...............144
Steering ................................... 144
Starting and operating ...............144
New vehicle running-in ............144
Ignition switch positions ...........144
Power button ........................... 145
Power saving mode .................146
Starting the engine ..................147
Overrun cut-off ........................ 148
Stop-start system ....................148
Parking .................................... 151
Engine exhaust .......................... 152
Exhaust filter ............................ 152
Catalytic converter ...................153
AdBlue ..................................... 153
Automatic transmission ..............156
Transmission display ...............156
Selector lever .......................... 157
Manual mode ........................... 157
Electronic driving programmes 158
Fault ........................................ 159
Eco mode ................................ 159Manual transmission ..................159
Brakes ........................................ 160
Antilock brake system .............160
Parking brake .......................... 161
Brake assist ............................. 164
Hill start assist ......................... 164
Ride control systems .................164
Electronic Stability Control and Traction Control system .........164
Descent control system ...........165
Selective ride control ...............167
Driver assistance systems .........169
Cruise control .......................... 169
Speed limiter ........................... 171
Adaptive cruise control ............173
Forward collision alert .............180
Active emergency braking .......181
Front pedestrian protection .....184
Parking assist .......................... 185
Advanced parking assist .........189
Side blind spot alert .................193
Panoramic view system ...........195
Rear view camera ...................197
Lane keep assist .....................198
Driver alert ............................... 201
Fuel ............................................ 202
Fuel for petrol engines .............202
Fuel for diesel engines ............202
Refuelling ................................ 204Trailer hitch................................ 205
General information .................205
Driving characteristics and towing tips .............................. 205
Trailer towing ........................... 206
Towing equipment ...................206
Trailer stability assist ...............209
Driving and operating1450:ignition off: some functions
remain active until key is
removed or driver's door is
opened, provided the ignition was
on previously1:ignition on power mode: ignition
is on, diesel engine is preheating, control indicators illuminate and
most electrical functions are
operable2:engine start: release key after
engine has been started
Steering wheel lock
Remove key from ignition switch and
turn steering wheel until it engages.
9 Danger
Never remove the key from
ignition switch during driving as
this will cause steering wheel lock.
Power button
The electronic key must be inside the
vehicle.
Engine start
Operate the clutch pedal (manual
transmission), the brake pedal and
press Start/Stop .Ignition on power mode without
starting the engine
Press Start/Stop without operating
clutch or brake pedal. Control
indicators illuminate and most
electrical functions are operable.Engine and ignition off
Press Start/Stop briefly in each mode
or when engine is running and vehicle
is stationary. Some functions remain
active until driver's door is opened,
provided the ignition was on
previously.Emergency shut off during driving
Press Start/Stop for about three
seconds 3 147. Steering wheel locks
as soon as vehicle is stationary.
Steering wheel lock
The steering wheel lock activates
automatically when:
● The vehicle is stationary.
● The ignition has been switched off.
To release steering wheel lock, open
and close driver's door and switch the ignition on power mode or start the
engine directly.
146Driving and operating9Warning
If the vehicle battery is discharged,
the vehicle must not be towed,
tow-started or jump-started as the
steering wheel lock cannot be
disengaged.
Operation on vehicles with
electronic key system in case of
failure
If either the electronic key fails or the
battery of the electronic key is weak,
a message may be displayed in the
Driver Information Centre.
Hold the electronic key with buttons
outside at the marking on the steering column cover as shown in the
illustration.
Operate the clutch pedal (manual
transmission), the brake pedal and
press Start/Stop .
This option is intended for
emergencies only. Replace the
electronic key battery as soon as
possible 3 23.
For unlocking or locking the doors,
see fault in radio remote control unit
or electronic key system 3 25.
Power saving mode
This mode deactivates electrical
consumers to avoid excessive
discharging of the vehicle battery.
These consumers, such as the
infotainment system, windscreen
wipers, low beam headlights,
courtesy light, etc. can be used for a
total maximum time of about
40 minutes after ignition is switched
off.Changing into power saving
mode
When power saving mode is
activated, a message appears in the
Driver Information Centre indicating
Power saving mode .
An active telephone call using the
hands-free option will be maintained
for around 10 minutes longer.
Deactivating power saving mode
Power saving mode is deactivated
automatically when the engine is
restarted. Run the engine for a
sufficient charge:
● for less than 10 minutes to use the consumers for approx.
5 minutes
● for more than 10 minutes to use the consumers for up to approx.
30 minutes
Driving and operating147Starting the engine
Vehicles with ignition switch
Turn key to position 1 to release the
steering wheel lock.
Manual transmission: operate clutch
and brake pedal.
Automatic transmission: operate
brake pedal and move selector lever
to P or N.
Do not operate accelerator pedal.
Diesel engines: wait until control
indicator ! extinguishes.
Turn key briefly to position 2 and
release after engine has been
started.
Manual transmission: during an
Autostop, the engine can be started
by depressing the clutch pedal
3 148.
Automatic transmission: during an
Autostop, the engine can be started
by releasing the brake pedal 3 148.
Vehicles with power button● Manual transmission: operate clutch and brake pedal.
● Automatic transmission: operate brake pedal and move selector
lever to P or N.
● Do not operate accelerator pedal.
● Press Start/Stop button.
● Release button after starting procedure begins. Diesel engine
starts after control indicator ! for
preheating extinguishes.
● Before restarting or to switch off the engine when vehicle is
stationary, press Start/Stop once
more briefly.
To start the engine during an
Autostop:
● Manual transmission: during an Autostop, the engine can be
started by depressing the clutch
pedal 3 148.
● Automatic transmission: during an Autostop, the engine can be
started by releasing the brake
pedal 3 148.
Driving and operating151● The charging level of the vehiclebattery is below a defined level.
● The brake vacuum is not sufficient.
● The vehicle is driven at least at walking speed.
● The climate control system requests an engine start.
● The air conditioning is manually switched on.
If an electrical accessory, e.g. a
portable CD player, is connected to
the power outlet, a brief power drop
during the restart might be noticeable.
Parking9 Warning
● Do not park the vehicle on an
easily ignitable surface. The
high temperature of the
exhaust system could ignite the
surface.
● Always apply the parking brake.
● If the vehicle is on a levelsurface or uphill slope, engage
first gear or set the selector
lever to position P. On an uphill
slope, turn the front wheels
away from the kerb.
If the vehicle is on a downhill
slope, engage reverse gear or
set the selector lever to position
P . Turn the front wheels
towards the kerb.
● Close the windows.
● Switch off the engine.
● Remove the ignition key from the ignition switch or switch off
ignition on vehicles with power
button. Turn the steering wheel until the steering wheel lock is
felt to engage.
● Lock the vehicle.
● Activate the anti-theft alarm system.
● The engine cooling fans may run
after the engine has been
switched off 3 212.
Caution
After running at high engine
speeds or with high engine loads,
operate the engine briefly at a low load or run in neutral for
approx. 30 seconds before
switching off, in order to protect
the turbocharger.
Note
In the event of an accident with
airbag deployment, the engine is
switched off automatically if the
vehicle comes to a standstill within a
certain time.
Emergency operation under
extreme cold temperatures
9 Warning
This emergency operation may
only be carried out in case of
extremely cold temperatures and if the vehicle is parked on a levelsurface.