Driving and operating133Turn the key briefly to position 3 and
release: an automatic procedure
operates the starter with a short delay
as long as the engine is running, see
'Automatic Starter Control'.
Manual transmission: during an
Autostop, the engine can be restarted
by depressing the clutch pedal
3 134.
Automatic transmission: during an
Autostop, the engine can be restarted
by releasing the brake pedal 3 134.
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 and release Engine Start/Stop:
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 when vehicle is stationary, press Engine 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 3 134.
● Automatic transmission: during an Autostop, the engine can be
started by releasing the brake
pedal 3 134.Key lock release
Some vehicles with an automatic
transmission are equipped with an
electronic key lock release system.
The key lock release is designed to
prevent ignition key removal unless
the selector lever is in P.
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.
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
134Driving and operatingstarting 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 depressed (manual transmission).
● Brake pedal not depressed 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. It starts the engine
automatically as soon as the clutch is
depressed. A battery sensor ensures
that an Autostop is only performed if
the 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 Ï.
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.
● Move the selector lever to neutral.
● Release the clutch pedal.
136Driving and operatingRestart of the engine by the stop-
start system
The selector lever must be in neutralto 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:
● The stop-start system is manually deactivated.
● The bonnet is opened.
● The driver's seat belt is unfastened and the driver's door
is opened.
● The engine temperature is too low.
● The charging level of the vehicle battery 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 the bonnet is not fully closed, awarning message is displayed in the
Driver Information Centre.
If an electrical accessory, e.g. a
portable CD player, is connected to
the power outlet, a brief power drop during engine 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. Activate the parking
brake without pressing the
release button. Apply as firmly
as possible on a downhill slope
or uphill slope. Depress brake
pedal at the same time to
reduce operating force.
● Switch off the engine.
● If the vehicle is on a level surface or uphill slope, engage
first gear or set the selector
lever to position P before
removing the ignition key. 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 before removing the ignition
key. Turn the front wheels
towards the kerb.
● Close the windows and the sunroof.
● Remove the ignition key from the ignition switch. For vehicles
with automatic transmission,
the key can only be removed
when the selector lever is in
position P.
Turn the steering wheel until
the steering wheel lock is felt to engage.
● Lock the vehicle.
● Activate the anti-theft alarm system.
Driving and operating1412. Close all doors to avoid ammoniafumes entering the interior of the
vehicle.
3. Release the fuel filler flap by pushing the flap 3 167.
4. Unscrew protective cap from the
filler neck.
5. Open AdBlue canister.
6. Mount one end of the hose on the
canister and screw the other end
on the filler neck.
7. Lift the canister until it is empty, or
until the flow from the canister has stopped. This can take up to
5 minutes.
8. Place the canister on the ground to empty the hose, wait
15 seconds.
9. Unscrew the hose from the filler neck.
10. Mount the protective cap and turn
clockwise until it engages.
Note
Dispose of AdBlue canister
according to environmental
requirements. To reuse the hose
flush it with clear water after usage.Automatic transmission
The automatic transmission permits
automatic gearshifting (automatic
mode) or manual gearshifting
(manual mode).
Transmission display
The mode or selected gear is shown
in the Driver Information Centre.
In automatic mode, the driving
programme is indicated by D.
In manual mode, M and the number
of the selected gear is indicated.
R indicates reverse gear.
Driving and operating143Manual mode
Move selector lever to position M.
Press button on the selector lever:
<:shift to a higher gear]:shift to a lower gear
If a higher gear is selected when
vehicle speed is too low, or a lower
gear when vehicle speed is too high,
the shift is not executed. This can
cause a message in the Driver
Information Centre.
In manual mode no automatic shifting to a higher gear takes place at high
engine revolutions.
Gear shift indication
The symbol R with a number beside
it is indicated when gearshifting is
recommended for fuel saving
reasons.
Shift indication appears only in
manual mode.
Electronic driving programmes
Special programmes automatically
adapt the shifting points when driving up inclines or down hills.
Automatic transmission
adaptation feature
This feature adapts transmission
operation during constant driving or
gear shifting. It increases durability
and keeps best shift quality over the
life cycle. You may perceive shifting
at initial mileage as uncomfortable,
but this is normal. Shift quality will be
improved gradually by constant
driving at each gear and gear shifting.Kickdown
Pressing down the accelerator pedal
beyond the kickdown detent will lead to maximum acceleration
independent of selected driving
mode. The transmission shifts to a lower gear depending on enginespeed.
Fault
In the event of a fault, a vehicle
message is displayed in the Driver
Information Centre. Vehicle
messages 3 104.
The transmission no longer shifts
automatically. Continued travel is possible with manual shifting.
Only the highest gear is available.
Depending on the fault, second gear
may also be available in manual
mode. Shift only when vehicle is at a
standstill.
Have the cause of the fault remedied
by a workshop.
144Driving and operatingInterruption of power supplyIn the event of an interruption of
power supply, the selector lever
cannot be moved out of the P
position. The ignition key cannot be removed from the ignition switch.
If the battery is discharged, start the
vehicle using jump leads 3 209.
If the battery is not the cause of the
fault, release the selector lever.
1. Keep the brake pedal depressed and pull the parking brake lever
up.
2. Remove the cap on the console with a thin object such as ascrewdriver.
3. Insert a screwdriver into the opening as far as it will go.
4. Shift selector lever to N.
5. Remove the screwdriver from the slot.
6. Reinstall the cap.
7. Have the cause of the power supply interruption remedied by a
workshop.
Manual transmission
To engage reverse, with the vehicle
stationary, depress clutch pedal,
press the release button on the
selector lever and engage the gear.
If the gear does not engage, set the
lever to neutral, release the clutch
pedal and depress again, then repeat
gear selection.
Do not slip the clutch unnecessarily.
When operating, depress the clutch
pedal completely. Do not use the
pedal as a foot rest.
150Driving and operatingshow DCS is in operation. DCS will
not activate at speeds above
50 km/h, even if the button is pressed.
Deactivation
Press u again. The green control
indicator u extinguishes. Depressing
the foot brake or accelerator will also
cause the system to be deactivated.
Fault If the green control indicator u does
not illuminate or flash after pressing the button, there is a fault in the
system.
Seek the assistance of a workshop. DSC control indicators u 3 94.Driver assistance
systems9 Warning
Driver assistance systems are
developed to support the driver
and not to replace the driver's
attention.
The driver accepts full
responsibility when driving the
vehicle.
When using driver assistance
systems, always take care
regarding the current traffic
situation.
Cruise control
The Cruise control can store and
maintain speeds of approx. 30 to
200 km/h. Deviations from the stored
speeds may occur when driving uphill or downhill.
For safety reasons, the cruise control cannot be activated until the brake
pedal has been operated once.
Activating in first gear is not possible.
Do not use the cruise control if it is not advisable to maintain a constant
speed.
With automatic transmission, only
activate cruise control in automatic
mode.
Control indicator m 3 96.
Switching on the system
Vehicle care189Fuse extractorA fuse extractor may be located in the fuse box in the engine compartment.
Place the fuse extractor on the
various types of use from the top or
side, and withdraw fuse.
Engine compartment fusebox
The fuse box is in the engine
compartment.
Disengage the cover, lift it upwards
and remove.
Mini FusesNo.Circuit1Sunroof2Exterior mirror switch / Rain
sensor / Power window DRV3–4–5Electrical brake control module6Intelligent battery sensor7Steering column lock8Transmission control module9–10Rear view camera / Interior rear
view mirror / Headlight switch /
Headlight11Rear window wiper12Heated rear window13Seat, lumbar support14Heated exterior mirrors