Keys, doors and windows23Fault
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 frequentintervals, 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.
Memorised settings
Whenever the ignition is switched off,
the following settings are
automatically memorised by the
remote control unit or the electronic
key:● automatic climate control
● lighting
● Infotainment system
● central locking system
● Sport mode settings
● comfort settings
The saved settings are automatically
used the next time the ignition is
switched on with the memorised key
of the remote control unit 3 139 or
electronic key 3 21.
A precondition is that Personalisation
by Driver is activated in the personal
settings of the Info-Display. This must
be set for each remote control unit or
electronic key which is used.
The settings of the driver's seat are
also memorised independent of the
memory positions 3 44.
The power seat automatically moves
into the saved position when
unlocking and opening the driver's
door with the memorised remote
control or electronic key and Auto
Memory Recall in the Info-Display is
activated.
Vehicle personalisation 3 106.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
opened. A precondition is that the
setting is activated in the vehicle
personalisation 3 106.
24Keys, doors and windowsRemote control operationUnlocking
Press c.
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 c once.
● Only the driver's door, load compartment and fuel filler flap
will be unlocked by pressing c
once. To unlock all doors, press
c twice.
Select the relevant setting in Settings,
I Vehicle in the Info-Display.
Info-Display 3 102.
Vehicle personalisation 3 106.
The setting can be saved for the
remote control being used.
Memorised settings 3 23.
Unlocking and opening the tailgate 3 29.
Locking
Close doors, load compartment and
fuel filler flap.
Press e.
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 3 106.
Electronic key system operation
The electronic key must be outside
the vehicle, within a range of approx. one metre of the relevant door side.
Keys, doors and windows25Unlocking
Press the button on the respective
exterior door handle and pull the
handle.
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 the button on any
exterior handle once.
● Only the driver's door, load compartment and fuel filler flap
will be unlocked by pressing the
button on the driver`s door
exterior handle once. To unlock
all doors, press button twice.
The setting can be changed in the
menu Settings in the Info-Display.
Vehicle personalisation 3 106.
Locking
Press the button on any exterior door
handle.
All doors, load compartment and fuel
filler flap will be locked.
The system locks if any of the
following occurs:
● It has been more than five seconds since unlocking.
● The button on an exterior handle has been pressed twice within
five seconds to unlock the
vehicle.
● 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 three times.
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 by pushing the touchpad
switch under the brand emblem when the electronic key is in range. Thedoors remain locked.
26Keys, doors and windowsOperation with buttons on the
electronic key
The central locking system can also
be operated with the buttons on the
electronic key.
Press c to unlock.
Press e to lock.
Remote control operation 3 23.
Passive locking
Automatic locking 3 27.
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 3 106.
Central locking buttons Locks or unlocks all doors, the load
compartment and fuel filler flap from
the passenger compartment by a
switch in the driver's door panel.
Press e to lock.
Press c to unlock.
Operation 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 empty, the driver's door can be locked or unlocked with the
mechanical key.
The lock cylinder in the driver's door
is covered by a cap.Remote control: to remove the cap,
insert the key into the recess at the
bottom of the cap and swivel the key
upward.
Keys 3 19.
Keys, doors and windows27Electronic key: to remove the cap,
press button at the back and extract
the key blade from the housing. Insert
the key into the recess at the bottom
of the cap and swivel the key upward.
Electronic key system 3 21.
Manual unlocking
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 twice or by
pressing c in the driver's door panel.
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
Push inside locking knob of all doors
except driver's door or press e in the
driver's door panel. Then close the driver's door and lock it from the
outside by turning the key in the lock
cylinder. The fuel filler flap and
tailgate are possibly not locked.
After locking, cover the lock cylinder
with the cap: insert the cap with the
lower side in the recesses, swivel and
push the cap until it engages at the
upper side.
Automatic lockingAutomatic locking after driving off
This security feature can be
configured to automatically lock all
doors, load compartment and fuel
filler flap after driving off and
exceeding a certain speed.
28Keys, doors and windowsWhen at a standstill after driving, the
vehicle will be unlocked automatically
as soon as the key is removed from
the ignition switch, or with electronic
key system when the ignition is
switched off.
Activation or deactivation of
automatic locking can be set in the
menu Settings , I Vehicle in the Info-
Display.
Info-Display 3 102.
Vehicle personalisation 3 106.
The setting can be saved for the remote control or electronic key being used 3 23.
Automatic relock after unlocking
This feature can be configured to
automatically lock 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.
Activation or deactivation of
automatic relock can be set in the
menu Settings , I Vehicle in the Info-
Display.
Info-Display 3 102.Vehicle personalisation 3 106.
The setting can be saved for the
remote control or electronic key being used 3 23.
Passive locking On vehicles with electronic key
system, this feature locks the vehicle
automatically after several seconds if
an electronic key has been
recognised previously inside the
vehicle, all doors have then been
closed and the electronic key does
not remain in the interior.
If the electronic key remains in the
vehicle or the ignition is not off,
passive locking will not be permitted.
If there have been two or more
electronic keys in the vehicle and the
ignition was on once, the feature
locks the vehicle if just one electronic key is taken out of the vehicle.
Passive locking can be disabled by
pressing c for a few seconds while
one door is open. It remains disabled
until e is pressed or the ignition is
switched on.Activation or deactivation of passive
locking can be set in the menu
Settings , I Vehicle in the Info-Display.
Info-Display 3 102.
Vehicle personalisation 3 106.
The setting can be saved for the remote control or electronic key being used 3 23.
Child locks
Storage73● Do not allow the load to protrudeabove the upper edge of the
backrests.
● Do not place any objects on the load compartment cover or the
instrument panel, and do not
cover the sensor on top of the instrument panel.
● The load must not obstruct the operation of the pedals, parking
brake and gear selector lever, or
hinder the freedom of movement
of the driver. Do not place any
unsecured objects in the interior.
● Do not drive with an open load compartment.9Warning
Always make sure that the load in
the vehicle is securely stowed.
Otherwise objects can be thrown
around inside the vehicle and
cause personal injury or damage
to the load or car.
● The payload is the difference between the permitted gross
vehicle weight (see identification
plate 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
75 kg. The roof load is thecombined weight of the roof rack and the load.
74Instruments and controlsInstruments and
controlsControls ....................................... 75
Steering wheel adjustment ........75
Steering wheel controls .............75
Heated steering wheel ...............76
Horn ........................................... 76
Windscreen wiper/washer .........76
Rear window wiper/washer .......78
Outside temperature ..................79
Clock ......................................... 79
Power outlets ............................. 81
Power connector .......................82
Ashtrays .................................... 83
Warning lights, gauges and indi‐ cators ........................................... 84
Instrument cluster ......................84
Speedometer ............................. 87
Odometer .................................. 88
Trip odometer ............................ 88
Tachometer ............................... 89
Fuel gauge ................................ 89
Engine coolant temperature gauge ....................................... 89
Service display .......................... 90
Control indicators ......................91Turn signal................................. 91
Seat belt reminder .....................91
Airbag and belt tensioners .........92
Airbag deactivation ....................92
Charging system .......................92
Malfunction indicator light ..........93
Brake and clutch system ...........93
Electric parking brake ................93
Electric parking brake fault ........93
Antilock brake system (ABS) .....94
Gear shifting .............................. 94
Following distance .....................94
Lane keep assist .......................94
Electronic Stability Control off ...94
Electronic Stability Control and Traction Control system ...........94
Traction Control system off .......95
Preheating ................................. 95
Tyre pressure monitoring system ...................................... 95
Engine oil pressure ....................95
Low fuel ..................................... 95
Immobiliser ................................ 96
Exterior light .............................. 96
High beam ................................. 96
High beam assist .......................96
LED headlights .......................... 96
Fog light ..................................... 96
Rear fog light ............................. 96
Cruise control ............................ 96Vehicle detected ahead .............96
Speed limiter ............................. 96
Traffic sign assistant ..................97
Door open .................................. 97
Information displays .....................97
Driver Information Centre ..........97
Info display .............................. 102
Vehicle messages ......................104
Warning chimes .......................105
Battery voltage ........................ 106
Vehicle personalisation ..............106
OnStar ....................................... 113