Keys, doors and windows23Replacing battery in electronic
key
Replace the battery as soon as the
system no longer operates properly or the range is reduced. The need for battery replacement is indicated by a
message in the Driver Information
Centre 3 104.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
1. Remove the cover.
2. Extract the flat battery from its location.
3. Replace battery with a battery of the same type. Pay attention to
the installation position.
4. Clip the cover in place.
Fault
If the central locking cannot be
operated or the engine cannot be
started, the cause may be one of the
following:
● Fault in electronic key.
● Electronic key is out of reception range.
● The battery voltage is too low.
● 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.
To rectify the cause of the fault,
change the position of the electronic
key.
Manual unlocking 3 23.
Central locking system Unlocks and locks doors, load
compartment and fuel filler flap.
A pull on an interior door handle
unlocks the respective door. Pulling
the handle once more opens the door.
Notice
In the event of an accident in which
airbags or belt pretensioners are
deployed, the vehicle is
automatically unlocked.
Notice
A short time after unlocking with the
remote control the doors are locked
automatically if no door has been
24Keys, doors and windowsopened. A precondition is that the
setting is activated in the vehicle
personalisation 3 105.
Remote control operation
Unlocking
Press O.
Unlocking mode can be set in the
vehicle personalisation menu in the
Info Display. Two settings are
selectable:
● All doors, load compartment and fuel filler flap will be unlocked by
pressing O once.
● Only the driver's door, load compartment and fuel filler flap
will be unlocked by pressing O
once. To unlock all doors, press O twice.
Select the relevant setting in the Vehicle personalisation.
Vehicle personalisation 3 105.
Unlocking the tailgate
Press P longer to unlock the
tailgate only.
Unlocking and opening the tailgate
3 29.
Locking
Close doors, load compartment and
fuel filler flap.
Press N.
If the driver's door is not closed
properly, the central locking system
will not work.
Confirmation
Operation of the central locking
system is confirmed by the hazard
warning flashers. A precondition is
that the setting is activated in the
vehicle personalisation 3 105.
Keys, doors and windows25Electronic key system operation
The electronic key must be outside
the vehicle, within a range of approx. one metre of the relevant door side.
Unlocking
Pass a hand behind the door handle
of one of the front doors to unlock the
vehicle or press the tailgate button.
Keep the hand behind the door
handle or keep the tailgate button
pressed to open the windows.
Unlocking mode can be set in the
vehicle personalisation menu in the
Info Display. Two settings are
selectable:
● Only the driver's door will be unlocked by passing a hand
behind the driver's door handle.
● All doors, load compartment and fuel filler flap will be unlocked by
passing a hand behind the
passenger's door handle or by
pressing the tailgate button.
● Only the tailgate will be unlocked
by pressing the tailgate button.
Vehicle personalisation 3 105.
Locking
Press with a finger or thumb on one
of the door handles (at the markings)
or press the tailgate button.
All doors, load compartment and fuel
filler flap will be locked.
26Keys, doors and windowsThe system locks if any door has
been opened and all doors are now
closed.
If the driver's door is not closed
properly, the electronic key remains in the vehicle or the ignition is not off,
locking will not be permitted and a
warning chime sounds.
If there have been two or more
electronic keys in the vehicle and the
ignition was on once, the doors will be locked even if just one electronic key
is taken out of the vehicle.
Unlocking and opening the tailgate
The tailgate can be unlocked and
opened hands-free by pushing the
touchpad switch under the tailgate
moulding when the electronic key is in
range. The doors remain locked.
Load compartment 3 29.Operation with buttons on the
electronic key
The central locking system can also
be operated with the buttons on the
electronic key.
Press O to unlock.
Press N to lock.
Press P longer to unlock and open
only the power tailgate.
Remote control operation 3 23.
Confirmation
Operation of central locking system is
confirmed by the hazard warning
flashers. A precondition is that the
setting is activated in the vehicle
personalisation 3 105.
Central locking button
Locks or unlocks all doors, the load
compartment and fuel filler flap from
inside the passenger compartment.
Press Q
to lock. The LED in the button
illuminates.
Press Q again to unlock. The LED in
the button extinguishes.
Keys, doors and windows27Operation with the key in case of
a central locking system fault
In case of a fault, e.g. vehicle battery
or remote control / electronic key
battery is discharged, the driver's
door can be locked or unlocked with
the mechanical key.
Manual unlocking
Electronic key: press and hold the
latch to extract the integral key.
Manually unlock the driver's door by
inserting and turning the key in the
lock cylinder.
The other doors can be opened by
pulling the interior handle. The load
compartment and fuel filler flap will
possibly not be unlocked.
By switching on the ignition, the anti- theft locking system is deactivated.
Manual locking
Manually lock the driver's door by
inserting and turning the key in the lock cylinder.
To lock the other doors, remove the
black cover by using a key.
Insert key carefully and move to the
inner side of the door without turning
the key.
Remove key and attach black cover.
The fuel filler flap and tailgate are
possibly not locked.
Automatic locking Automatic locking after driving off This system allows automatic lockingof the doors and tailgate as soon as
the speed of the vehicle exceeds a
certain speed.
28Keys, doors and windowsIf one of the doors or the tailgate is
open, the automatic central locking
does not take place. This is signalled
by the sound of the locks rebounding, accompanied by illumination of h in
the instrument cluster, an audible
signal and the display of an alert
message.
This function can be activated or
deactivated at any time. With the
ignition on, press Q until an audible
signal starts and a corresponding message is displayed.
The state of the system stays in
memory when switching off the
ignition.
Automatic relock after unlocking
This feature automatically locks all
doors, load compartment and fuel
filler flap a short time after unlocking
with the remote control or electronic
key, provided no door has been
opened.
Child locks9 Warning
Use the child locks whenever
children are occupying the rear
seats.
Mechanical child locks
Turn the red child lock in the rear door to the horizontal position by using a
key. The door cannot be opened from
the inside.
To deactivate, turn the child lock to
the vertical position.
Storage77plate 3 242) and the EC kerb
weight.
To calculate the payload, enter the data for your vehicle in the
weights table at the front of this
manual.
The EC kerb weight includes
weights for the driver (68 kg),
luggage (7 kg) and all fluids (fuel
tank 90% full).
Optional equipment and
accessories increase the kerb
weight.
● Driving with a roof load increases
the sensitivity of the vehicle to
cross-winds and has a
detrimental effect on vehicle
handling due to the vehicle's
higher centre of gravity.
Distribute the load evenly and secure it properly with retaining
straps. Adjust the tyre pressure
and vehicle speed according to
the load conditions. Check and
retighten the straps frequently.
Do not drive faster than 75 mph. The permissible roof load is
85 kg. The roof load is thecombined weight of the roof rack
and the load.
78Instruments and controlsInstruments and
controlsControls ....................................... 79
Steering wheel adjustment ........79
Steering wheel controls .............79
Heated steering wheel ...............79
Horn ........................................... 80
Windscreen wiper and washer ..80
Rear window wiper and washer ...................................... 82
Outside temperature ..................82
Clock ......................................... 83
Power outlets ............................. 84
Inductive charging .....................86
Cigarette lighter ......................... 86
Ashtrays .................................... 87
Warning lights, gauges and indi‐ cators ........................................... 87
Instrument cluster ......................87
Speedometer ............................. 89
Odometer .................................. 90
Trip odometer ............................ 90
Tachometer ............................... 90
Fuel gauge ................................ 91
Engine coolant temperature gauge ....................................... 91Engine oil level monitor.............91
Service display .......................... 92
Control indicators ......................93
Turn lights .................................. 93
Seat belt reminder .....................93
Airbag and belt tensioners .........94
Airbag deactivation ....................94
Charging system .......................94
Malfunction indicator light ..........94
Stop engine ............................... 95
System check ............................ 95
Brake and clutch system ...........95
Electric parking brake ................95
Electric parking brake fault ........95
Antilock brake system (ABS) .....96
Gear shifting .............................. 96
Lane departure warning ............96
Lane keep assist .......................96
Electronic Stability Control and Traction Control system ...........96
Engine coolant temperature ......96
Preheating ................................. 97
Diesel particle filter ....................97
AdBlue ....................................... 97
Deflation detection system ........97
Engine oil pressure ....................97
Low fuel ..................................... 98
Autostop .................................... 98
Exterior light .............................. 98
High beam ................................. 98Low beam.................................. 98
High beam assist .......................98
LED headlights .......................... 98
Fog light ..................................... 99
Rear fog light ............................. 99
Rain sensor ............................... 99
Cruise control ............................ 99
Adaptive cruise control ..............99
Vehicle detected ahead .............99
Side blind spot alert ...................99
Active emergency braking .........99
Speed limiter ........................... 100
Door open ................................ 100
Displays ..................................... 100
Driver Information Centre ........100
Info Display .............................. 102
Vehicle messages ......................104
Warning chimes .......................104
Battery voltage ........................ 104
Vehicle personalisation ..............105
Telematics service .....................108
OnStar ..................................... 108