24Keys, doors and windows
Used to operate:■ Central locking system
■ Anti-theft locking system
■ Anti-theft alarm system
■ Power windows
■ Sunroof
The radio remote control has a range of approx. 20 metres. It can be
restricted by external influences. The
hazard warning flashers confirm
operation.
Handle with care, protect from
moisture and high temperatures and avoid unnecessary operation.
Fault If the central locking system cannot
be operated with the radio remote
control, it may be due to the following:
■ Range exceeded
■ Battery voltage too low
■ Frequent, repeated operation of the
radio remote control while not in range, which will require re-
synchronisation■ Overload of the central locking system by operating at frequent
intervals, the power supply is
interrupted for a short time
■ Interference from higher-power radio waves from other sources
Unlocking 3 25.
Basic settings Some settings can be changed in the menu Settings in the Info-Display.
Vehicle personalisation 3 134.
Radio remote control battery replacement
Replace the battery as soon as the
range reduces.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
Key with foldaway key section
Extend the key and open the unit.
Replace the battery (battery type CR 2032), paying attention to the
installation position. Close the unit
and synchronise.
Radio remote controlsynchronisation
After replacing the battery, unlock the
door with the key in the driver's door
lock. The radio remote control is
synchronised by switching on the
ignition.
32Keys, doors and windows
Status during the first 30 seconds of
anti-theft alarm system activation:LED illu‐
minates=test, arming delay.LED
flashes
quickly=doors, tailgate or
bonnet not completely
closed, or system fault.
Status after system is armed:
LED flashes
slowly=system is armed.
Seek the assistance of a workshop in the event of faults.
Deactivation
Unlocking the vehicle deactivates the anti-theft alarm system.
Alarm When triggered, the alarm sounds via a separate battery-backed power
sounder, and the hazard warning
lights flash simultaneously. The
number and duration of alarm signals
are stipulated by legislation.
The alarm can be silenced by
pressing any button on the radio
remote control or by switching on the
ignition.
The anti-theft alarm system can be
deactivated only by pressing button
c or by switching on the ignition.
A triggered alarm, which has not been interrupted by the driver, will be
indicated by the hazard warning
lights. They will flash quickly three
times the next time the vehicle is
unlocked with the radio remote
control. Additionally a warning
message or a warning code is
displayed in the Driver Information
Centre after switching on the ignition.
Vehicle messages 3 128.
Immobiliser
The system is part of the ignition
switch and checks whether the
vehicle is allowed to be started with
the key being used.
The immobiliser is activated
automatically after the key has been
removed from the ignition switch.If the control indicator d flashes when
the ignition is on, there is a fault in the
system; the engine cannot be started. Switch off the ignition and repeat the
start attempt.
If the control indicator continues
flashing, attempt to start the engine
using the spare key and seek the
assistance of a workshop.
Note
The immobiliser does not lock the
doors. You should always lock the
vehicle after leaving it and switch on
the anti-theft alarm system 3 25,
3 30.
Control indicator d 3 120.
Keys, doors and windows37
Initialising the power windowsIf the windows cannot be closed
automatically (e.g. after
disconnecting the vehicle battery), a
warning message or a warning code
is displayed in the Driver Information
Centre.
Vehicle messages 3 128.
Activate the window electronics as
follows:
1. Close doors.
2. Switch on ignition.
3. Pull switch until the window is closed and keep pulling for
additional 2 seconds.
4. Repeat for each window.Heated rear window
Operated by pressing the Ü button.
Heating works with the engine
running and is switched off
automatically after a short time.
Sun visors The sun visors can be folded down orswivelled to the side to prevent
dazzling.
If the sun visors have integral mirrors, the mirror covers should be closed
when driving.
A ticket holder is located on the
backside of the sun visor.
Instruments and controls131
Vehicle messages on the
Colour-Info-Display Some important messages appear
additionally in the
Colour-Info-Display. Press the
multifunction knob to confirm a
message. Some messages only pop
up for a few seconds.
Warning chimes
When starting the engine or
whilst driving
Only one warning chime will sound at a time.
The warning chime regarding
unfastened seat belts has priority
over any other warning chime.
■ If seat belt is not fastened.
■ If a door or the tailgate is not fully closed when starting off.
■ If a certain speed is exceeded with parking brake applied.
■ If a programmed speed is exceeded.■ If a warning message or a warningcode appears in the Driver
Information Centre.
■ If the parking assist detects an object.
■ If unintended lane change occurs.
■ If the reverse gear is engaged and the rear end carrier extended.
■ If the diesel particle filter has reached the maximum filling level.
When the vehicle is parked and/ or the driver's door is opened ■ When the key is in the ignition switch.
■ With exterior lights on.
During an Autostop ■ If the driver's door is opened.
Battery voltage
When the vehicle battery voltage is
running low, a warning message or
warning code 174 will appear in the
Driver Information Centre.1. Switch off immediately any electric consumers which are not
required for a safe ride, e.g. seat
heating, heated rear window or
other main consumers.
2. Charge the vehicle battery by driving continuously for a while or
by using a charging device.
The warning message or warning
code will disappear after the engine
has been started twice consecutively
without a voltage drop.
If the vehicle battery cannot be
recharged, have the cause of the fault
remedied by a workshop.
Lighting153
The lighting switches off immediately
when the ignition key is turned to
position 1 3 165.
Activation or deactivation of this
function can be changed in the menu Settings in the Info-Display. Vehicle
personalisation 3 134.
The settings can be saved for the key being used 3 25.
The following lights will additionally
switch on when the driver's door is
opened:
■ all switches
■ Driver Information Centre
■ door pocket lights
■ console lights
Exit lighting
The following lights switch on if the
key is removed from the ignition
switch:
■ Interior lights
■ Instrument panel light (only when it
is dark)■ Door and console lights
■ Puddle lights
They will switch off automatically after
a delay and will be activated again if
the driver's door is opened.
Headlights, tail lights, reversing lights
and number plate lights illuminate the
surrounding area for an adjustable
time after leaving the vehicle.
Switching on
1. Switch off ignition.
2. Remove ignition key.
3. Open driver's door.
4. Pull turn signal lever.
5. Close driver's door.
If the driver's door is not closed the
lights switch off after two minutes.
Exit lighting is switched off
immediately if the turn signal lever is pulled while the driver's door is open.
Activation, deactivation and duration
of this function can be changed in the menu Settings in the Info-Display.
Vehicle personalisation 3 134.
The settings can be saved for the key being used 3 25.
Battery discharge
protection
Vehicle battery state of charge
function
The function guarantees longest
vehicle battery life via a generator with controllable power output and
optimised power distribution.
Driving and operating165Starting 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. Autostop may be inhibited to allow for charging the
battery.
Diesel particle filter 3 170.Ignition switch positions0=Ignition off1=Steering wheel lock released,
ignition off2=Ignition on, for diesel engine:
preheating3=Starting
Retained power off
The following electronic systems can
work until the driver's door is opened
or at the latest 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 oruntil the key is removed from the
ignition switch, regardless of whether
any door will be opened.
Starting the engine
Manual transmission: operate clutch.
Automatic transmission: operate
brake and move the selector lever to
P or N.
166Driving and operating
Do not operate the accelerator pedal.Diesel engine: turn the key to position2 for preheating until control
indicator ! extinguishes.
Turn 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.
Before restarting or to switch off the
engine, turn the key back to position
0 .
During an Autostop, the engine can
be started by depressing the clutch
pedal.Starting the vehicle at low
temperatures
The start of 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 battery.
With temperatures below -30 °C the
automatic transmission need 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.
Once applied, the system will go on
starting 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 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 is released.
174Driving and operating
Only the highest gear is available.
Depending on the fault, 2nd 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.
Interruption of power
supply
In 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 vehicle battery is discharged,
start the vehicle using jump leads
3 276.
If the vehicle battery is not the cause
of the fault, release the selector lever.
1. Apply the parking brake.
2. Release the selector lever trim from the centre console at the
front, fold it upwards and rotate it
to the left.
3. Insert a screwdriver into the opening as far as it will go and
move the selector lever out of P or
N . If P or N is engaged again, the
selector lever will be locked in
position again. Have the cause of
the power supply interruption
remedied by a workshop.
4. Mount the selector lever trim onto
the centre console and refit.