Climate control143Demisting and defrosting the
windows V
●
Press V: the air distribution is
directed towards the windscreen.
● Set fan speed to highest level.
● Set temperature control to warmest level.
● Switch on heated rear window Ü.
● Open side air vents as required and direct them towards the doorwindows.
Note
If V is pressed while the engine is
running, an Autostop will be inhibited
until V is pressed again.
If
l is pressed with the fan switched
on and the engine running, an
Autostop will be inhibited until l is
pressed again or until the fan is switched off.
If V is pressed while the engine is
in an Autostop, the engine will restart automatically.
If l is pressed with the fan switched
on while the engine is in an
Autostop, the engine will restart
automatically.
Stop-start system 3 157.
Electronic climate control system
The dual zone climate control allows
different temperatures for driver side
and front passenger side.
In automatic mode, temperature, fan
speed and air distribution are
regulated automatically.
Illustration shows functions which
may not be available for your
particular vehicle.
Controls for: ● Rotary knob for temperature on driver side
● Rotary knob for temperature on passenger side
● Climate control ON/OFF
● Heated windscreen 9
● Air conditioning A/C
● Manual air recirculation n
● Air distribution w, u and v
● Demisting and defrosting $
Climate control145● 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 3 124.
Temperature preselectionSet temperatures to the desired
value. The knob on the passenger
side changes the temperature for the
passenger side.The knob on the driver's side changes the temperature for the driver's side or for both sides
depending on activation of
synchronisation SYNC.
The selected temperature is indicated in the display of the knob.
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.
Note
If A/C is switched on, reducing the
set cabin temperature can cause the engine to restart from an Autostop or
inhibit an Autostop.
Stop-start system 3 157.Dual zone temperature
synchronisation SYNC
Press SYNC to link passenger side
temperature setting to the driver side.
The LED in the button illuminates to
indicate activation.
When passenger side settings will be
adjusted, synchronisation is
deactivated and the LED
extinguishes.
146Climate controlDemisting and defrosting the
windows $
● Press $. The LED in the button
illuminates to indicate activation.
● Temperature and air distribution are set automatically and the fan
runs at high speed.
● Switch on heated rear window f.
● Switch on heated windscreen 9 if available.
● To return to previous mode: press $, to return to automatic
mode: press AUTO.
Settings of automatic rear window
heating can be changed in the
Settings menu in the Info Display.
Vehicle personalisation 3 124.
Note
If V is pressed while the engine is
running, an Autostop will be inhibited
until V is pressed again.
If l is pressed with the fan switched
on and the engine running, an
Autostop will be inhibited until l is
pressed again or until the fan is
switched off.
If V is pressed while the engine is
in an Autostop, the engine will restart automatically.
If l is pressed with the fan switched
on while the engine is in an
Autostop, the engine will restart
automatically.
Stop-start system 3 157.Deactivation or activation of
Electronic climate control system
ON/OFF
Cooling, fan and automatic mode can
be switched off by pressing ON/OFF.
When the system is deactivated, the
LED in the button ON/OFF is not
illuminated.
Activation by pressing ON/OFF
again, A/C or AUTO . The LED in the
button illuminates to indicate
activation.
148Climate controlReturn to automatic air distribution:
press AUTO .
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) when outside
temperature is above a specific level. 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.
When the cooling system is switched
off, no engine restart will be
requested by the climate control
system during an Autostop.
Exception: defrost system is activated and outside temperature above 0 °C
requests a restart.
Stop-start system 3 157.
The display will indicate A/C ON when
cooling is activated or A/C OFF when
the cooling is deactivated.
Manual air recirculation nPress n to activate the air
recirculation mode. The LED in the
button illuminates to indicate
activation.
Press n again to deactivate
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 w.
Driving and operating151Driving and
operatingDriving hints ............................... 152
Control of the vehicle ...............152
Steering ................................... 152
Starting and operating ...............152
New vehicle running-in ............152
Ignition switch positions ...........152
Power button ........................... 153
Retained power off ..................155
Starting the engine ..................155
Overrun cut-off ........................ 157
Stop-start system ....................157
Parking .................................... 160
Engine exhaust .......................... 161
Exhaust filter ............................ 161
Catalytic converter ...................163
AdBlue ..................................... 163
Automatic transmission ..............166
Transmission display ...............166
Gear selection ......................... 167
Manual mode ........................... 168
Electronic driving programmes 168
Fault ........................................ 168
Interruption of power supply ....169Manual transmission ..................169
Brakes ........................................ 170
Antilock brake system .............170
Parking brake .......................... 171
Brake assist ............................. 172
Hill start assist ......................... 172
Ride control systems .................173
Traction Control system ..........173
Electronic Stability Control ......174
Driver assistance systems .........176
Cruise control .......................... 176
Speed limiter ........................... 177
Adaptive cruise control ............179
Forward collision alert .............187
Following distance indication ...189
Active emergency braking .......190
Front pedestrian protection .....193
Parking assist .......................... 195
Side blind spot alert .................203
Rear view camera ...................204
Traffic sign assistant ................206
Lane keep assist .....................210
Fuel ............................................ 212
Fuel for petrol engines .............212
Fuel for diesel engines ............214
Refuelling ................................ 214
Trailer hitch ................................ 216
General information .................216Driving characteristics and
towing tips .............................. 217
Trailer towing ........................... 217
Towing equipment ...................218
Trailer stability assist ...............221
152Driving 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 3 157.
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 exhaust filter may take place more
often.
Exhaust filter 3 161.
Ignition switch positions
Turn key:
Driving and operating157Starting the vehicle at lowtemperatures
Starting the engine without additional
heaters is possible down to -25 °С for diesel engines and -30 °C for petrol
engines. Required is an engine oil
with the correct viscosity, the correct fuel, performed services and a
sufficiently charged vehicle battery.
With temperatures below -30 °C the
automatic transmission requires a
warming phase of approx. 5 minutes.
The selector lever must be in position
P .
Automatic starter control This function controls the engine
starting procedure. The driver does
not need to hold the key in position 3
or to hold Engine Start/Stop pressed.
Once applied, the system will go on
starting automatically until the engine
is running. Because of the checking procedure, the engine starts running
after a short delay.Possible reasons for a non-starting
engine:
● clutch pedal not operated (manual transmission)
● brake pedal not operated or selector lever not in P or N
(automatic transmission)
● timeout occurred
Turbo engine warm-up
Upon start-up, engine available
torque may be limited for a short time,
especially when the engine
temperature is cold. The limitation is
to allow the lubrication system to fully
protect the engine.
Overrun cut-off
The fuel supply is automatically cut off
during overrun, i.e. when the vehicle
is driven with a gear engaged but accelerator pedal is released.
Depending on driving conditions, the
overrun cut-off may be deactivated.Stop-start system
The stop-start system helps to save
fuel and to reduce the exhaust
emissions. When conditions allow, it
switches off the engine as soon as the
vehicle is at a low speed or at a
standstill, e.g. at a traffic light or in a
traffic jam. The ignition stays on.
The engine switches on automatically
when certain conditions apply or
restart is activated by a driver.
Activation
The stop-start system is available as
soon as the engine is started, the
vehicle starts-off and the conditions
as stated below in this section are
fulfilled.
158Driving and operatingDeactivation
Deactivate the stop-start system
manually by pressing D. The
deactivation is indicated when the
LED in the button illuminates.
Autostop
Vehicles with manual transmission
Depending on the engine, two
versions of an Autostop are available. See engine data to identify the engine
identifier code for your vehicle
3 280.
Conventional Autostop
An Autostop can be activated at a
speed lower than 5 km/h.Activate a conventional Autostop as
follows:
● Depress the clutch pedal.
● Set the lever in neutral.
● Release the clutch pedal.
Early Autostop
An Autostop can be activated at a
speed lower than 14 km/h.
Early Autostop is inhibited if the
incline is greater than 5%.
Activate an early Autostop as follows: ● Depress the brake pedal sufficiently.
● Depress the clutch pedal.
The engine will be switched off while
the ignition stays on.
Early Autostop is inhibited when the
turn lights are on, trailer hitch is
connected, the steering wheel is
moved beyond a certain point or the
inclines is greater than 5%.Vehicles with automatic transmission
If the vehicle is at a standstill with
depressed brake pedal, Autostop is
activated automatically.Indication
An Autostop is indicated by the
needle at the AUTOSTOP position in
the tachometer.
After restart, the idle speed is
indicated.
During an Autostop, the heating and
brake performance will be
maintained.
Conditions for an Autostop
The stop-start system checks if each
of the following conditions is fulfilled:
● The stop-start system is not manually deactivated.
● The bonnet is fully closed.