Climate control149
Rear air vents
Air vents for rear passenger are in the
centre console between the front
seats.
9 Warning
Do not attach any objects to the
slats of the air vents. Risk of
damage and injury in case of an
accident.
Fixed air vents
Additional air vents are located
beneath the windscreen and door windows and in the foot wells.Maintenance
Air intake
The air intake in front of the
windscreen in the engine
compartment must be kept clear to
allow air intake. Remove any leaves,
dirt or snow.
Pollen filterCabin air filtration
A particle filter cleans the cabin air
from dust, soot, pollen and spores.
Driving and operating151Driving and operatingDriving hints............................... 151
Starting and operating ...............152
Engine exhaust .......................... 159
Automatic transmission .............. 160
Manual transmission ..................164
Drive systems ............................ 165
Brakes ........................................ 165
Ride control systems .................168
Driver assistance systems .........173
Fuel ............................................ 204
Trailer hitch ................................ 211Driving hints
Control of the vehicleNever coast with engine not
running (except during Autostop)
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,
but there will be a controlled reduction
in power steering assist and vehicle
speed is reduced.
Stop-start system 3 156.
Pedals
To ensure the pedal travel is
uninhibited, there must be no mats in the area of the pedals.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.
Control indicator c 3 106.Caution
Vehicles equipped with hydraulic
power steering:
If the steering wheel is turned until it reaches the end of its travel, and
is held in that position for more
than 15 seconds, damage may occur to the power steering
system and there may be loss of
power steering assist.
152Driving and operatingStarting 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 and the cleaning process of the diesel particle filter may take
place more often.
Diesel particle filter 3 159.
Ignition switch positions
Turn key:0=Ignition off: some functions
remain active until key is
removed or driver's door is
opened, if ignition was on
previously.1=Accessory power mode: Steering
wheel lock released, some
electrical functions are operable,
ignition is off.2=Ignition on power mode: Ignition
is on, diesel engine is preheating.
Control indicators light up and the
most electrical functions are
operable.3=Engine start . Release key after
starting procedure begins.Steering wheel lock
Remove key from the ignition switch
and turn steering wheel until it
engages.
Power button
Electronic key must be inside the
vehicle.
Accessory power mode: press
Engine Start/Stop button once
without operating clutch or brake pedal. The yellow LED in the button
illuminates. Steering wheel lock is
released and some electrical
functions are operable, ignition is off.
Driving and operating153
Ignition on power mode: press and
hold Engine Start/Stop button for
6 seconds without operating clutch or brake pedal. The green LED in the
button illuminates, diesel engine is
preheating. Control indicators light up
and the most electrical functions are
operable.
Engine start: operate clutch pedal
(manual transmission) or brake pedal (automatic transmission) and press
Engine Start/Stop button once more.
Release button after starting
procedure begins.
Ignition off: press Engine Start/Stop
button briefly in each mode or when
engine is running. Some functions
remain active until driver's door is
opened, if ignition was on before.
Steering wheel lock
The steering wheel lock activates
automatically when:
■ the vehicle is stationary and
■ the ignition has been switched off and
■ the driver's door is opened.To release steering wheel lock, open
and close driver's door and switch on accessory mode or start the engine
directly.9 Warning
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.
Emergency operation on
vehicles with electronic key
system
If either the electronic key fails or the
battery of the electronic key is weak,
the Driver Information Centre may
display No Remote Detected or
Replace Battery in Remote Key when
you try to start the vehicle.Open the centre console storage area by lifting up the armrest. Place the
electronic key in the transmitter
pocket. Depress the clutch pedal
(manual transmission) or the brake
pedal (automatic transmission) and
press the Engine Start/Stop button.
To switch off the engine, press the Engine Start/Stop button again.
Remove the electronic key from the
transmitter pocket.
This option is intended for
emergencies only. Replace the
electronic key battery as soon as
possible 3 21.
154Driving and operating
For unlocking or locking the doors see
fault in radio remote control unit or
electronic key system 3 22.
Retained power off
The following electronic systems can
work until the driver's door is opened
or for 10 minutes after the ignition is
switched off:
■ Power windows
■ Sunroof
■ Power outlets
Power to the Infotainment system will continue to operate for 30 minutes
when ignition is off, regardless of
whether any door will be opened.Starting the engine
Vehicles with ignition switch
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 engine: turn the key to position 2 for preheating until control
indicator ! extinguishes.
Turn key briefly to position 3 and
release: an automatic procedure operates the starter with a short delay
until the engine is running, see
Automatic Starter Control.
Before restarting or to switch off the
engine, turn key back to position 0.
During an Autostop, the engine can
be started by depressing the clutch
pedal 3 156.
Vehicles with power button
Manual transmission: operate clutch
and brake pedal.
Driving and operating155
Automatic transmission: operate
brake pedal and move selector lever
to P or N.
Do not operate accelerator pedal.
Press and release Engine Start/Stop
button: an automatic procedure
operates the starter with a short delay
until the engine is running, see
Automatic Starter Control.
Before restarting or to switch off the
engine, press Engine Start/Stop
button once more.
During an Autostop, the engine can
be started by depressing the clutch
pedal 3 156.Starting the vehicle at low
temperatures
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 have to hold the key in position 3
or to hold Engine Start/Stop button
pressed. Once applied, the system
will go on starting automatically until
the engine is running. Because of the checking procedure, the engine startsrunning after a short delay.Possible reasons for a non-startingengine:
■ 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.
156Driving and operatingStop-start systemThe 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. It starts the engine
automatically as soon as the clutch is depressed. A battery sensor ensures
that an Autostop is only performed if
the vehicle battery is sufficiently
charged for a restart.
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.Deactivation
Deactivate the stop-start system
manually by pressing the eco button.
The deactivation is indicated when
the LED in the button extinguishes.
Autostop
If the vehicle is at a low speed or at a
standstill, activate an Autostop as
follows:
■ Depress the clutch pedal
■ set the lever to neutral
■ release the clutch pedal
The engine will be switched off while
the ignition stays on.
An Autostop is indicated by the
needle at the AUTOSTOP position in
the tachometer. On some versions a
control indicator in the instrument
cluster lights up when engine is in Autostop.
During an Autostop, the heating and
brake performance will be
maintained.
Driving and operating157Caution
The steering assist can be
reduced during an Autostop.
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
■ the driver's door is closed or the driver's seat belt is fastened
■ the vehicle battery is sufficiently charged and in good condition
■ the engine is warmed up
■ the engine coolant temperature is not too high
■ the engine exhaust temperature is not too high, e.g. after driving with
high engine load
■ the ambient temperature is above -5° C
■ the climate control system allows an Autostop
■ the brake vacuum is sufficient
■ the self-cleaning function of the diesel particle filter is not active
■ the vehicle was driven at least at walking speed since the last
Autostop
Otherwise an Autostop will be
inhibited.
Certain settings of the climate control
system may inhibit an Autostop. See
Climate control chapter for more
details 3 137.
Immediately after motorway driving
an Autostop may be inhibited.
New vehicle running-in 3 152.
Vehicle battery discharge protection
To ensure reliable engine restarts, several battery discharge protection
features are implemented as part of
the stop-start system.
Power saving measures
During an Autostop, several electrical
features such as auxiliary electric
heater or rear window heating are
disabled or switched to a powersaving mode. The fan speed of the
climate control system is reduced to
save power.
Restart of the engine by the
driver Depress the clutch pedal to restart the
engine.
The engine start is indicated by the
needle at the idle speed position in
the tachometer.
If the selector lever is shifted out of
neutral before depressing the clutch
first, control indicator - illuminates
or is shown as a symbol in the Driver
Information Centre.
Control indicator - 3 105.
Restart of the engine by the
stop-start system
The selector lever must be in neutral
to enable an automatic restart.
If one of the following conditions
occurs during an Autostop, the
engine will be restarted automatically
by the stop-start system: