Driving and operating115
At very low outside temperatures
(e.g. below -10 °C) keep the clutch
pedal depressed while pressing the
Start/Stop button until the engine
starts.
If one of the starting conditions is not
applied, a corresponding message
appears in the Driver Information
Centre 3 90.
Vehicle messages 3 91.
Engine stop Electronic key must be inside the
vehicle, either in the card reader or
the front passenger compartment.
With the vehicle stationary, press the
Start/Stop button to stop the engine.
The steering wheel lock is engaged
when the driver's door is opened and the vehicle is locked.
If the electronic key is not detected, a
corresponding message appears in
the Driver Information Centre 3 90 . In
this event, press the Start/Stop button
for 2 seconds to stop the engine.
Central locking system 3 25.Retained power off
Press the Start/Stop button for more
than two seconds; the engine is
stopped while some functions, e.g.
Infotainment system, are available for
use for approx. 10 minutes.
These functions stop working when
the driver's door is opened and the
vehicle is locked.
Note
Always take the electronic key with you when exiting the vehicle.
The electronic key being left in the
card reader is indicated by a warning
chime 3 91 and a message in the
Driver Information Centre 3 91 when
the driver's door is opened.9 Danger
Never leave an electronic key
inside the vehicle when children or animals are left in the vehicle, to
avoid unintended operation of
windows, doors or engine. Risk of
fatal injury.
Fault
If the engine cannot be started, the
cause may be one of the following:
■ Fault in electronic key.
■ Electronic key out of reception range.
■ Battery voltage too low.
■ Overload of the central locking system by operating at frequentintervals, the power supply is
interrupted for a short time.
■ Interference from higher-power radio waves from other sources.
Battery replacement 3 21.
Central locking system 3 25.
Electronic key system 3 23.
116Driving and operatingStarting the engine
Manual transmission: operate clutch.
Do not accelerate.
Diesel engines: turn the key to
position M for preheating until control
indicator ! extinguishes in the
instrument cluster 3 88.
Turn key to position D and release.
The increased engine speed
automatically returns to normal idling
speed as the engine temperature
rises.
Start attempts should not last longer
than 15 seconds. If engine does not
start, wait 15 seconds before
repeating starting procedure. If
necessary, depress accelerator
before repeating starting procedure.
Before restarting or to switch off the
engine, turn key back to St.
During an Autostop, the engine can be started by depressing the clutch
pedal. Stop-start system 3 117.
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.Idle speed control
To increase the idle speed, press theswitch. After a few seconds the
function will be activated.
The function will be deactivated
when:
■ The clutch pedal is depressed
■ The accelerator pedal is depressed
■ Vehicle speed is above 0 km/h
■ Control indicator F, W or C
illuminate in the instrument cluster
To increase or decrease the fast idle
speed rate, consult a workshop.
Driving and operating117Vehicle shutdown
Fuel cut-off system
If the vehicle runs out of fuel, the fuel system is cut-off and must be reset
after refuelling. A corresponding
warning message may also appear in the Driver Information Centre 3 90.9 Danger
If you can smell fuel in the vehicle,
or a fuel leak is present, have thecause of this remedied
immediately by a workshop. Do
not reset the fuel cut-off system, to avoid the risk of fire.
Resetting with remote control
key / manual key
To reset the fuel cut-off system and
enable the vehicle to be driven:
1. Turn the ignition key to position M
3 114.
2. Wait a few minutes to allow the fuel system to be reset.
3. Turn key to position D to start the
engine.
If the engine does not start, repeat the procedure.
Resetting with electronic keysystem
To reset the fuel cut-off system and
enable the vehicle to be driven:
1. Insert the electronic key in the card reader 3 114.
2. Press the engine start/stop button
without depressing any pedals.
3. Wait a few minutes to allow the fuel system to be reset.
If the engine does not start, repeat the procedure.
Electronic key system 3 23.Power button 3 114.
Refuelling 3 134.
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 is released.
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. It restarts the engine
automatically as soon as the clutch pedal is depressed.
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.
134Driving and operatingFuel
Fuel for diesel engines Only use diesel fuel that complies
with EN 590. The fuel must have low
sulphur content (max. 10 ppm).
Equivalent standardised fuels with a
biodiesel (= FAME according to
EN14214) content of max. 7% by
volume (like DIN 51628 or equivalent
standards) may be used.
In countries outside the European
Union, use Euro-Diesel fuel with a
sulphur concentration below 50 ppm.Caution
Use of fuel that does not comply to EN 590 or similar can lead to
engine powerloss, increased wear
or engine damage and loss of
warranty.
Do not use marine diesel oils, heating
oils, Aquazole and similar diesel-
water emulsions. Diesel fuels must
not be diluted with fuels for petrol
engines.
The flow and filterability of diesel fuels are temperature-dependent. When
temperatures are low, refuel with
diesel fuel with guaranteed winter
properties.
Diesel fuel filter 3 146, diesel fuel
system bleeding 3 146.
Refuelling9 Danger
Before refuelling, switch off engine
and any external heaters with
combustion chambers.
Vehicles with stop-start system:
The engine must be switched off
and the ignition key removed, to avoid risk of engine being
restarted automatically by the
system.
Switch off any mobile phones.
Follow the operating and safety
instructions of the filling station
when refuelling.
9 Danger
Fuel is flammable and explosive.
No smoking. No naked flames or
sparks.
If you can smell fuel in your
vehicle, have the cause of this
remedied immediately by a
workshop.
Caution
In case of misfuelling, do not
switch on ignition.
Note
To ensure the fuel level is displayed
correctly, the ignition must be
switched off before refuelling. Avoid
minor fuel top-ups (e.g. less than
5 litres) to ensure accurate readings.
The fuel filler flap is located on the left-
hand side of the vehicle.
The fuel filler flap can only be opened
if the vehicle is unlocked and the left-
hand door is opened.
Pull flap to open.
146Vehicle careDiesel fuel filter
Drain diesel fuel filter of residual
water at every engine oil change.
Place a container underneath the
filter housing. Loosen the knurled
screw on the lower part of the filter by approx. one turn, to drain off the
water.
The filter is drained as soon as water-
free diesel fuel emerges. Retighten
the screw.
Check diesel fuel filter at shorter
intervals if the vehicle is subjected to
extreme operating conditions.
Diesel fuel system
bleeding
If the fuel tank has been run dry, it will
be necessary to air vent or bleed the
diesel fuel system.
Refuel then proceed as follows:
With ignition key ■ Switch on the ignition (key to position M) for 5 seconds at a time.
■ Switch off ignition (key to position A) for 3 seconds.
■ Repeat this process multiple times.
■ Start the engine (key to position D)
then switch off (key to position St).
Ignition switch positions 3 114.
With power button ■ Insert the electronic key in the card
reader.
■ Press the Start/Stop button without
pressing any of the pedals.
■ Wait a few minutes before starting engine.
Power button 3 114.If the engine fails to start, seek the
assistance of a workshop.
Starting the engine 3 116.
Wiper blade replacement Wiper blades on the windscreen
Lift the wiper arm, press button to
disengage the wiper blade and
remove.
Attach new wiper blade slightly
angled to the wiper arm and push until
it engages.
Lower wiper arm carefully.
Vehicle care155
No.Circuit1Vehicle battery (with electronic
key system)2APC battery backup (with elec‐
tronic key system)3Heating and ventilation system4Adaptations5Adaptations6Heating and ventilation system7Additional heating and ventila‐
tion, air conditioning system8Supplementary heating and
ventilation system9Electric exterior mirrors, addi‐
tional adaptations10Heated exterior mirrors11Radio, multimedia, electric exte‐ rior mirrors, diagnostic socket12Multimedia, trailer hitchNo.Circuit13Courtesy lights, battery
discharge protection14Fuel injection system, tyre pres‐ sure monitoring system, elec‐
tronic key system15Hazard warning flashers, turn and lane-change signals16Central locking17Left-hand high beam, right-hand
low beam, tail lights, left-hand
daytime running light18Front fog lights, rear fog lights,
number plate lighting19Alarm, horn, lighting, wiper20Instrument cluster21Light switch22Rear window wiper, windscreen
washer pump, horn23APC general battery24Reversing lightsNo.Circuit25Brake switch26Fuel injection, starter27Airbag, steering column lock28Passenger power window29Power steering30Brake lights31APC battery backup (with elec‐
tronic key system)32Service display33Cigarette lighter, power outlet34Right-hand high beam, left-
hand low beam, sidelights,
right-hand daytime running light35Brake lights, ABS, immobiliser36Interior lighting, air conditioning37Starting with electronic key
system38Rear window wiper
156Vehicle care
No.Circuit39Warning chimes40Load compartment power outlet41Driver power window42Rear power outlet43Starting, body control module44Heated seats45Heating, air conditioning46Windscreen wiper47TachographVehicle toolsTools
The jack, wheel wrench, wheel bolt
sleeve, torx key, adapters, wheel
cover hook, towing eye are contained
in a unit, stowed under the driver's
seat.
Slide seat forwards and fold the
backrest forwards 3 45 to access the
tool box. The tool box may be secured
in position with a wing nut.
Wheel changing 3 165, Spare wheel
3 166.
Vehicles with tyre repair kit: The
wheel cover hook and torx key are
stored within the tyre repair kit case,
stowed under the driver's seat.
Tyre repair kit 3 162.
Service and maintenance175
Australia:
Maintenance of your vehicle is
required every 15,000 km or after
1 year , whichever occurs first, unless
otherwise indicated by the service
display.
Turkey:
Maintenance of your vehicle is
required every 20,000 km or after
1 year , whichever occurs first, unless
otherwise indicated by the service
display.
Morocco:
Maintenance of your vehicle is
required every 15,000 km or after
1 year , whichever occurs first, unless
otherwise indicated by the service
display.
Russia, Ukraine, Belarus,
Kazakhstan:
Maintenance of your vehicle is
required every 15,000 km or after
1 year , whichever occurs first, unless
otherwise indicated by the service
display.South Africa:
Maintenance of your vehicle is
required every 15,000 km or after
1 year , whichever occurs first, unless
otherwise indicated by the service
display.
Algeria, Tunisia:
Maintenance of your vehicle is
required every 10,000 km or after
1 year , whichever occurs first, unless
otherwise indicated by the service
display.
International:
Maintenance of your vehicle is
required every 10,000 km or after
1 year , whichever occurs first, unless
otherwise indicated by the service
display.
International countries include:
Albania, Bosnia-Herzegovina,
Cyprus, Kosovo, Macedonia, Malta,
Montenegro, New Zealand, Serbia,
Singapore.International+:
Maintenance of your vehicle is
required every 8,000 km or after
1 year , whichever occurs first, unless
otherwise indicated by the service
display.
International + countries include:
Moldova.
International++:
Maintenance of your vehicle is
required every 5,000 km or after
6 months, whichever occurs first,
unless otherwise indicated by the
service display.
International ++ countries include:
Hong Kong.
Confirmations
Confirmation of service is recorded in
the Service and Warranty Booklet.
The date and mileage is completed
with the stamp and signature of the
servicing workshop.
Make sure that the Service and
Warranty Booklet is completed
correctly as continuous proof of