Page 104 of 474

103 Controls in detail
Locking and unlocking
Front doors
Pull on door handle2 on the
respective front door to open door.
If door was locked, locking knob1 will
move up.
Rear doors
Pull up locking knob1 on the
respective rear door to unlock door.
Pull on door handle2 on the
respective rear door to open door.
Opening the trunk
Opening the trunk from the outside
A minimum height clearance of 5.71 ft
(1.74 m) is required to open the trunk lid.
The handle is located above the rear
license plate recess.
1HandleThe vehicle must be unlocked.
Pull on handle1.
The trunk opens.
The trunk can also be opened using
buttonŠ on the SmartKey or from its
inside in an emergency, see “Trunk emer-
gency release” (
page 105). To cancel the alarm, do one of the
following:
Press buttonŒ or‹ on the
SmartKey.
Insert the SmartKey in the starter
switch.
!The trunk lid swings open upwards
automatically. Always make sure there
is sufficient overhead clearance.iIf the trunk does not open, it is still
locked separately (
page 106).
Page 108 of 474

107 Controls in detail
Locking and unlocking
Pull the mechanical key out of the
SmartKey (
page 389).
Insert the mechanical key in the trunk
lid lock.
Turn the mechanical key clockwise to
position2 and remove the mechani-
cal key in that position to lock the
trunk.
The trunk remains locked even when the
vehicle is centrally unlocked.
Insert the mechanical key in the trunk
lid lock.
Turn the mechanical key counterclock-
wise to neutral position1 and remove
the mechanical key in that position to
unlock the trunk.
You can now open the trunk
(page 103).
Automatic central locking
The doors and the trunk automatically lock
when the ignition is switched on and the
wheels are turning at vehicle speeds of
approximately 9 mph (15 km/h) or more.
You can open a locked door from the
inside. Open door only when conditions
are safe to do so.
You can deactivate the automatic locking
mode using the control system, see “Set
automatic locking” (
page 152).
Locking and unlocking from the inside
You can lock or unlock the doors and the
trunk from inside using the central locking
or unlocking switch. This can be useful, for
example, if you want to lock the vehicle
before starting to drive.
You cannot lock or unlock the fuel filler flap
with the central locking or unlocking
switch.
iYou can only cancel the separate trunk
locking mode by means of the
mechanical key.
iThe doors unlock automatically after an
accident if the force of the impact
exceeds a preset threshold.
To prevent the vehicle door locks from
locking, deactivate the automatic
central locking when the vehicle
is pushed or towed
is on a test stand
Warning!
G
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it
with you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. Unsuper-
vised use of vehicle equipment may cause
an accident and/or serious personal injury.
Page 404 of 474

403 Practical hints
Replacing bulbs
Front turn signal lamp bulb
Turn bulb socket3 with the bulb
counterclockwise and remove it.
Press gently onto the bulb and turn it
counterclockwise out of bulb
socket3.
Press new bulb gently into bulb
socket3 and turn clockwise until it
engages.
Place bulb socket3 back into the
lamp and turn it clockwise.
Parking and standing lamp bulb
Press the clamp on housing cover2
and remove it.
Pull out bulb socket5 with the bulb.
Pull the bulb out of bulb socket5.
Press the new bulb into bulb socket5.
Press bulb socket5 back into the
lamp.
Align housing cover2 and press until
it engages.Additional turn signal lamp bulbs
The additional turn signal lamps in the
exterior rear view mirrors have LEDs.
If a malfunction occurs or L EDs f a il to f unc -
tion, the entire turn signal unit must be re-
placed. Have the turn signal unit replaced
by an authorized Mercedes-Benz Center.
Front side marker lamp bulbs
Since replacing the side marker lamp bulbs
is a technically highly demanding process,
we recommend you have the side marker
lamp bulbs replaced by an authorized
Mercedes-Benz Center.
Replacing bulbs for rear lamps
Before you start to replace a bulb for a rear
lamp, do the following first:
Turn the exterior lamp switch to
positionM (
page 118).
Open the trunk (
page 103).
Tail lamp unit
1Latch