132Driving and operatingStarting and operating
New vehicle running-in
Do not brake unnecessarily hard for
the first few journeys and after new
disc brake pads have been fitted.
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. Autostop may be
inhibited to allow for charging the
vehicle battery.
Stop-start system 3 136.
Diesel particle filter 3 140.
Ignition switch positions
Turn key:0:ignition off: Some functions
remain active until key is
removed or driver's door is
opened, provided the ignition was on previously1:accessory power mode: Steering
wheel lock released, some
electrical functions are operable,
ignition is off2:ignition is on, diesel engine is
preheating. Control indicators
illuminate and most electrical
functions are operable3:engine start: Release key after
starting procedure beginsSteering wheel lock
Remove key from ignition switch and
turn steering wheel until it engages.9 Danger
Never remove the key from
ignition switch during driving as
this will cause steering wheel lock.
Power button
Electronic key must be inside the
vehicle, either in the card reader or
the front passenger compartment.
Driving and operating133If the electronic key is not inside the
vehicle, a corresponding message
appears in the Driver Information
Centre 3 102.
Note
Do not put the electronic key in the
load compartment during driving, as
this is outside of the detection zone
(indicated by a warning chime at low
speed 3 104 and a message in the
Driver Information Centre 3 103).
Note
In the event the electronic key is kept in the front passenger compartment
and a message appears in the Driver
Information Centre (possibly
accompanied by a warning chime) indicating that it is out of reception
range, we recommend inserting the
electronic key in the card reader.
Some functions, e.g. Infotainment
system, are available for use as soon
as you enter the vehicle.Accessory power mode
Press START/STOP without
operating clutch or brake pedal to
enable further electrical functions to
be operated.
These functions switch off
automatically after a delay.
Engine start
Operate clutch and brake pedal and
press START/STOP . Release button
after starting procedure begins.
If a gear is engaged, the engine can
be started only by operating the clutch
pedal and pressing the
START/STOP button.
In some cases, it may be necessary
to move the steering wheel slightly
while pressing START/STOP to
release the steering wheel lock. A
corresponding message appears in
the Driver Information Centre 3 102.
At very low outside temperatures (e.g. below -10 °C) keep the clutch pedal
depressed while pressing
START/STOP until the engine starts.If one of the starting conditions is not
applied, a corresponding message
appears in the Driver Information
Centre 3 102.
Vehicle messages 3 103.
Engine stop
Electronic key must be inside the
vehicle, either in the card reader or the front passenger compartment.
With the vehicle stationary, press
START/STOP 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 3 102.
In this event, press START/STOP for
two seconds to stop the engine.
Central locking system 3 26.
Retained power off
Press START/STOP for more than
two seconds; the engine is stopped
while some functions, e.g.
Infotainment system, are available for
use for approx. 10 minutes.
134Driving and operatingThese 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 3 104 and a message in the
Driver Information Centre 3 103
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 22.
Central locking system 3 26.
Electronic key system 3 24.
Starting the engine
Manual transmission: operate clutch.
Do not accelerate.
Diesel engines: turn the key to
position 2 for preheating until control
indicator ! extinguishes in the
instrument cluster 3 100.
Turn key to position 3 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 0.
During an Autostop, the engine can
be started by depressing the clutch
pedal.
Stop-start system 3 136.
138Driving and operating● the defrosting function is notactivated
● the climate control system does not inhibit an Autostop
● the brake vacuum is sufficient
● the self-cleaning function of the diesel particle filter is not active
3 140
● the Antilock brake system (ABS) 3 147, Traction Control system
(TC) 3 149 and Electronic
Stability Program (ESP® Plus
)
3 150 ride control systems are
not actively engaged
● the vehicle has moved since the last Autostop
Otherwise an Autostop will be
inhibited.
Certain settings of the climate control
system may also inhibit an Autostop.
See " Climate control " chapter for
further information 3 118.
Immediately after motorway driving
an Autostop may be inhibited.
New vehicle running-in 3 132.Vehicle battery discharge protection
To ensure reliable engine restarts, several battery discharge protection
features are implemented as part of
the stop-start system.
Restart of the engine by the driver
Depress the clutch pedal to restart the
engine.
Note
If any gear is selected, the clutch
pedal must be fully depressed to
restart the engine.
If the engine does not restart first
time, depress clutch pedal fully again.
Alternatively, press button Î to
restart the engine while in an
Autostop.
Control indicator Ï 3 101
extinguishes in the instrument cluster when the engine is restarted.
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:
● the vehicle battery is discharged
● the outside temperature is too low or too high (e.g. below 0 °C
or above 30 °C)
● the defrosting function is activated 3 118
● the brake vacuum is not sufficient
● the brake pedal is operated repeatedly
● the vehicle starts to move
An automatic engine restart may not
be possible if a door or the bonnet is
open.
If an electrical accessory, e.g. a
portable CD player, is connected to
the power outlet, a brief power drop
during engine restart may be
noticeable.
If the Infotainment system is active,
audio sound may briefly be reduced
or interrupted during the restart.
Driving and operating139Fault
If a fault occurs in the stop-start
system, the LED in Î illuminates,
and a corresponding message
appears in the Driver Information
Centre 3 102 . Seek the assistance of
a workshop.
Vehicle messages 3 103.
Warning chimes 3 104.
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 parking brake without pressing 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. On an uphill slope,
turn the front wheels away from
the kerb.
If the vehicle is on a downhill
slope, engage reverse gear.
Turn the front wheels towards the kerb.
● Close the windows.
● Remove the ignition key from the ignition switch. Turn the
steering wheel until the
steering wheel lock is felt to
engage.
● Lock the vehicle by pressing e on
the remote control 3 26.
Activate the anti-theft alarm
system 3 38.
● The engine cooling fans may run
after the engine has been
switched off 3 166.
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.
Vehicle storage 3 165.
144Driving and operatingWarning chimes 3 104.
Refilling AdBlueCaution
Only use AdBlue that complies
with European standards
DIN 70 070 and ISO 22241-1.
Do not use additives.
Do not dilute AdBlue.
Otherwise the selective catalytic
reduction system could be
damaged.
Note
If AdBlue must be refilled at very low temperatures, the refilling of AdBlue
may not be detected by the system.
In this case, park the vehicle in a
space with a higher ambient
temperature until AdBlue is
liquefied.
Note
If engine starting is prohibited due to low AdBlue level, we recommend
refilling the tank completely or with a volume of at least ten litres of AdBlue(depending on AdBlue
consumption).
Avoid minor top-ups (e.g. less than ten litres), otherwise the system may
not detect a refill.
Note
When unscrewing the protective cap from the filler neck, ammonia fumes
may emerge. Do not inhale as the fumes have a pungent smell. The
fumes are not harmful by inhalation.
The vehicle must be parked on a level
surface.The filler neck for AdBlue is located
behind the fuel filler flap, 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.9 Danger
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.
Capacities 3 219.
Filling station
9 Danger
Follow the operating and safety
instructions of the filling station
when refilling AdBlue.
1. Switch off engine and remove key
from ignition switch.
Driving and operating1452. Open left-hand door and pull fuelfiller flap to open.
3. Unscrew protective capanticlockwise from the filler neck.
Caution
The AdBlue protective cap is the
blue lower cap (arrowed in
illustration), and the fuel filler cap
is the black upper cap 3 160.
In case of incorrect refilling, do not switch on ignition. Seek the
assistance of a workshop
immediately.
4. Fully insert the pump nozzle into the filler neck and switch it on.
5. When refilling is complete, mount the protective cap and turn
clockwise until it engages.
6. Close fuel filler flap and left-hand door.
AdBlue canister Note
Only use the designated AdBlue
canisters for refilling, to prevent a
topping-up of too much AdBlue.
Additionally, the fumes in the tank
are captured in the canister and do
not emerge.
Note
Since AdBlue has a limited
durability, check the date of expiry
before refilling.
1. Switch off engine and remove key
from ignition switch.
2. Open left-hand door and pull fuel filler flap to open.
3. Unscrew protective capanticlockwise from the filler neck.
Caution
The AdBlue protective cap is the
blue lower cap (arrowed in
illustration), and the fuel filler cap
is the black upper cap 3 160.
In case of incorrect refilling, do not switch on ignition. Seek the
assistance of a workshop
immediately.
4. Open AdBlue canister.
146Driving and operating5.Mount one end of the hose on the
canister and screw the other end
on the filler neck.
6. Lift the canister until it is empty, or
until the flow from the canister has stopped. This can take up to five
minutes.
7. Place the canister on the ground to empty the hose, wait 15
seconds.
8. Unscrew the hose from the filler neck.
9. Mount the protective cap and turn
clockwise until it engages.
10. Close fuel filler flap and left-hand door.
Note
Dispose of AdBlue canister
according to environmental
requirements. Hose can be reused
after flushing with clear water before
AdBlue dries out.Note
Allow the vehicle to idle for at least
ten seconds to allow the system to
detect the AdBlue refill.
Failure to observe this procedure will
result in the system only recognising the AdBlue refill after approx.
20 minutes of driving.
If the AdBlue refill is detected
successfully, AdBlue level warnings
will disappear.
If the AdBlue refill is not detected
some time after running the engine,
seek the assistance of a workshop.
Filler cap
Only use genuine filler caps. AdBlue
tank has a special filler cap.
Fault
If the system detects an operating
fault, control indicator Y illuminates
together with F and a warning chime.
Seek the assistance of a workshop
immediately.
A corresponding message appears in the Driver Information Centre 3 102.Manual transmission
To engage reverse, with the vehicle
stationary depress the clutch pedal, pull up the collar on the selector lever
and engage the gear against the
resistance.
If the gear does not engage, set the
lever in 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.