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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.
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148Driving and operatingEmergency shut off during driving
If the engine needs to be switched off during driving in case of emergency,
press Start/Stop for five seconds.9Danger
Switching off the engine during
driving may cause loss of power
support for brake and steering
systems. Assistance systems and
airbag systems are disabled.
Lighting and brake lights will
extinguish. Therefore power down the engine and ignition while
driving only when required in case of emergency.
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.
five minutes. The selector lever must
be in position P.
Heating functionalities Note
Individual heating functionalities,
such as heated seats or heated
steering wheel, may be temporarily
unavailable in the event of electrical
loading constraints. Functions will
be resumed after some minutes.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.
Page 153 of 279

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.
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192Driving and operatingDeactivation
The current park assist manoeuvre is
cancelled via the button to return to
the previous screen in the Info
Display. To deactivate the system
completely, press ¼ in the centre
console.
The system is deactivated
automatically:
● if the ignition is switched off
● if stalling the engine
● if no manoeuvre is started within 5 minutes of selection of the typeof manoeuvre
● after a prolonged stop of the vehicle during a manoeuvre
● if the Electronic Stability Control is triggered
● if the speed of the vehicle exceeds the stated limit
● when the driver interrupts movement of the steering wheel
● after seven manoeuvres for entering a perpendicular parking
slot (a manoeuvre consists of
one rear move or one forward
move)● after ten manoeuvres for entering
or exiting a parallel parking slot
● on opening a door or the load compartment
● if one of the front wheels encounters an obstacle
● parking manoeuvre successfully ended
Deactivation by the driver or by the
system during manoeuvring will be indicated on the display. Additionally,
an acoustic signal sounds.
The system is switched off
automatically when towing an
electrically connected trailer, bicycle
carrier, etc.
Contact your dealer to switch off the
system for a prolonged period.
Fault
In the event of a fault, a message is
displayed in the Colour Info Display, accompanied by an acoustic signal.
In the event of a fault in the power
steering, H illuminates and a
message is displayed in the Driver
Information Centre.9 Warning
Under certain circumstances,
various reflective surfaces on
objects or clothing as well as
external noise sources may cause the system to fail to detect
obstacles.
Special attention must be paid to
low obstacles which can damage
the lower part of the bumper.
Caution
Performance of the system can be reduced when sensors are
covered, e.g. by ice or snow.
Performance of the parking assist
system can be reduced due to
heavy loading.
Special conditions apply if there
are taller vehicles in the vicinity
(e.g. off-road vehicles, mini vans,
vans). Object identification and correct distance indication in the
upper part of these vehicles
cannot be guaranteed.
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Driving and operating205Caution
Wipe off any overflowing fuel
immediately.
To close, turn the fuel filler cap
clockwise until it clicks.
Close the flap and allow it to engage.
Fuel filler cap
Only use genuine fuel filler caps.
Diesel-engined vehicles have special fuel filler caps.
Trailer hitch
General information
Only use towing equipment that has
been approved for your vehicle.
Entrust retrofitting of towing
equipment to a workshop. It may be
necessary to make changes that
affect the cooling system, heat
shields or other equipment.
The bulb outage detection function for
trailer brake light cannot detect a
partial bulb outage e.g. in case of four
bulbs with a power of 5 W each, the
function only detects lamp outage
when only a single 5 W lamp remains
or none remain.
Fitting of towing equipment could
cover the opening of the towing eye.
If this is the case use the coupling ball bar for towing. Always keep the
coupling ball bar in the vehicle to have
it on hand if needed.Driving characteristics and
towing tips
Before attaching a trailer, lubricate
the coupling ball. However, do not do
so if a stabiliser, which acts on the
coupling ball, is being used to reduce snaking movements.
During trailer towing do not exceed a
speed of 80 km/h. A maximum speed
of 100 km/h is only appropriate if an
oscillation damper is used and the
permissible gross trailer weight does
not exceed the vehicle’s curb weight.
For trailers with low driving stability
and caravan trailers, the use of an
oscillation damper is strongly
recommended.
If the trailer starts snaking, drive more
slowly, do not attempt to correct the
steering and brake sharply if
necessary.
When driving downhill, drive in the
same gear as if driving uphill and
drive at a similar speed.
Adjust tyre pressure to the value
specified for full load 3 263.
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Driving and operating2093.Attach the trailer, close the towing
ring and fix the splint.
4. Connect the trailer plug to the socket and attach the breakaway
stopping cable to the eye on the
carrier.
Trailer stability assist If the system detects snaking
movements, engine power is reduced
and the vehicle / trailer combination is
selectively braked until the snaking
ceases. While system is working keep
steering wheel as still as possible.
Trailer stability assist is a function of
the Electronic Stability Control 3 164.
Page 229 of 279
Vehicle care227No.Circuit16Front fog lights18Right headlight19Left headlight29Windscreen wiper
After having changed defective fuses,
close the fuse box cover and lock it.
If the fuse box cover is not closed
correctly, malfunction may occur.
Instrument panel fuse box
The fuse box is located behind a
cover in the instrument panel at the
left side.Remove the cover by pulling at the
top left, then at the right side.No.Circuit1Inductive charging, clutch
switch, selective ride control,
power steering, diesel exhaust
system, interior mirror4Horn6Windscreen washer7Power outlet rear10Door lock
Page 230 of 279
228Vehicle careNo.Circuit12Diagnostic connector, power
supply transformer13Head-up display, climate
control, Infotainment system14Anti-theft alarm system, tele‐
matic unit15Automatic transmission, instru‐
ment cluster, climate control16Starter, power supply trans‐
former17Instrument cluster19Trailer socket, steering wheel
controls21Anti-theft system, power button22Rear view camera, rain and light sensor23Seat belt reminder, special
vehicle control module, start-
stop, trailer socketNo.Circuit24Parking assist, Infotainment
system, rear view camera, side
blind spot camera25Airbag26Steering angle sensor27Parking heater29Infotainment system31-32Power outlet34Parking assist, interior mirror35Diagnostic connector, headlight
range adjustment, heated wind‐ screen, climate control36Interior lights, USB portVehicle tools
Tools
Vehicles with spare wheel
Open the cover of the footwell storage
3 74.