Page 99 of 417

98 Controls in detailLocking and unlockingFactory setting
Global unlocking
Press buttonŒ.
All turn signal lamps flash once. The
anti-theft alarm system is disarmed.
The vehicle will lock again automatically
and reactivate the anti-theft alarm system
within approximately 40 seconds of un-
locking if:
neither door nor trunk is opened
the SmartKey is not inserted in the
starter switch
the central locking switch is not
activated
Global locking
Press button‹.
With the hood, trunk and all doors
closed, all turn signal lamps flash three
times. The anti-theft alarm system is
armed.Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey so that
pressingŒ only unlocks the driver’s
door and the fuel filler flap.
Press and hold buttonsŒ and‹
simultaneously for about five seconds
until battery check lamp5 flashes
twice.
The SmartKey will then function as
follows:
Unlocking driver’s door and fuel filler
flap
Press buttonŒ once.
All turn signal lamps flash once. The
anti-theft alarm system is disarmed.Global unlocking
Press buttonŒ twice.
All turn signal lamps flash once. The
anti-theft alarm system is disarmed.
Global locking
Press button‹.
With the hood, trunk and all doors
closed, all turn signal lamps flash three
times. The anti-theft alarm system is
armed.
Page 100 of 417

99 Controls in detail
Locking and unlocking
Restoring to factory setting
Press and hold buttonsŒ and‹
simultaneously for about six seconds
until battery check lamp5
(page 96) flashes twice.Checking the batteries
Press button ‹ or Œ.
Battery check lamp5 (
page 96)
comes on briefly to indicate that the
SmartKey batteries are in order.Unlocking and opening the trunk lid
You can unlock the trunk separately.
A minimum height clearance of
5.5 ft (1.65 m) is required to open the
trunk lid.
Press and hold buttonŠ until the
trunk unlocks and opens slightly.
!If you can no longer lock or unlock the
vehicle with the SmartKey, then either
the batteries in the SmartKey are dis-
charged, the SmartKey is malfunction-
ing or the vehicle battery is drained.
Check the batteries in the
SmartKey (
page 99) and replace
them if necessary (
page 344).
Use the mechanical key to unlock
the vehicle (
page 342).
Have the vehicle battery and the
battery connections checked. Con-
tact an authorized Mercedes-Benz
Center.
If the SmartKey is malfunctioning,
contact an authorized Mercedes-Benz
Center.
!If battery check lamp5 does not
come on briefly during check, then the
SmartKey batteries are discharged.
Replace the batteries (
page 344).
You can obtain the required batteries
at any authorized Mercedes-Benz
Center.
iIf the batteries are checked within
signal range of the vehicle, pressing
the‹ orŒ button will lock or
unlock the vehicle accordingly.
iIf the vehicle was previously centrally
locked, the trunk lid will lock automati-
cally when closed. The turn signals will
flash three times to confirm locking.
Page 101 of 417

100 Controls in detailLocking and unlockingLoss of SmartKey or mechanical key
If you lose a SmartKey or mechanical key,
you should do the following:
Have the SmartKey deactivated by an
authorized Mercedes-Benz Center.
Report the loss of the SmartKey or the
mechanical key immediately to your
car insurance company.
If necessary, have the trunk lock
replaced.
Your authorized Mercedes-Benz Center
will be glad to supply you with a replace-
ment.
Opening the doors
Opening from the outside
For information on opening the doors from
the outside, see “Getting started”
(page 38).Opening from the inside
You can open a locked door from the in-
side. Open the door only if the vehicle is
stationary and when conditions are safe to
do so.
1Inside door handle
Pull on door handle1.
The door swings outwards and up-
wards automatically.!Ensure sufficient side- and overhead
clearance prior to opening the doors,
see “Main dimensions” (
page 373).
iIf the vehicle has previously been
locked from the outside with the
SmartKey, opening a door from the
inside will trigger the anti-theft alarm
system.
To cancel the alarm, do one of the
following:
Press buttonŒ or‹ on the
SmartKey.
Insert the SmartKey in the starter
switch.
Page 102 of 417

101 Controls in detail
Locking and unlocking
Opening the trunk
Opening the trunk from the outside
A minimum height clearance of
5.5 ft (1.65 m) is required to open the
trunk lid.
The handle is located above the rear
license plate recess.
1Trunk lock
2Handle The vehicle must be unlocked.
Pull on handle2 and lift the trunk lid.
The trunk can also be opened using
buttonŠ on the SmartKey or from its
inside in an emergency, see “Trunk lid
emergency release” (
page 102).
Opening the trunk from the inside
You can open the trunk from the inside if
the vehicle is stationary.
A minimum height clearance of
5.5 ft (1.65 m) is required to open the
trunk lid.
The switch is located on the lower part of
the center console.1Remote trunk lid release switch
Press remote trunk lid release
switch1 until the trunk lid unlocks.
Lift the trunk lid.
The trunk can also be opened using
buttonŠ on the SmartKey or from its
inside in an emergency, see “Trunk lid
emergency release” (
page 102).
!Always make sure that there is suffi-
cient overhead clearance.
!Always make sure that there is suffi-
cient overhead clearance.
Page 103 of 417

102 Controls in detailLocking and unlockingClosing the trunk lid
1Handle
Lower trunk lid by firmly pulling on
handle1.
Trunk lid emergency release
The trunk lid emergency release button is
located in the trunk lid.Emergency release button
Briefly press emergency release but-
ton.
The trunk unlocks and the trunk lid
opens slightly.
Warning!
G
To prevent possible personal injury, always
keep hands and fingers away from the trunk
opening when closing the trunk lid. Be espe-
cially careful when small children are
around.
Only drive with the trunk closed. Among oth-
er dangers, such as your view being blocked,
exhaust fumes may enter the vehicle interi-
or.
!Do not pull on the Airbrake. Otherwise
the Airbrake could be damaged.iDo not place the SmartKey in the open
trunk. You may lock yourself out.
If the vehicle was previously centrally
locked, the trunk lid will lock automati-
cally after closing it. The turn signals
will flash three times to confirm lock-
ing.
iThe emergency release button unlocks
and opens the trunk while the vehicle is
standing still or in motion.
Page 104 of 417

103 Controls in detail
Locking and unlocking
Illumination of the emergency release
button:
The button will flash for 30 minutes
after opening the trunk.
The button will flash for 60 minutes
after closing the trunk.
Automatic locking
The doors and the trunk lid lock automati-
cally when the vehicle is set into motion.
You can open a locked door from the in-
side. Open door only when conditions are
safe to do so.
You can deactivate the automatic locking
using the control system (
page 135).
Locking and unlocking from the inside
You can lock or unlock the vehicle from in-
side using the central locking switches.
This can be useful, for example, if you want
to unlock the passenger door from the in-
side or want to lock the vehicle before
starting to drive.
The central locking switch does not lock or
unlock the fuel filler flap.
iThe emergency release button does
not open the trunk lid if the vehicle
battery is discharged or disconnected.
If the vehicle has previously been
locked from the outside with the
SmartKey, opening the trunk from the
inside using the emergency release
button will trigger the anti-theft alarm
system.
To cancel the alarm, do one of the
following:
Press buttonŒ or‹ on the
SmartKey.
Insert the SmartKey in the starter
switch.
iThe doors unlock automatically after an
accident if the force of the impact ex-
ceeds a preset threshold.
The vehicle locks automatically when
the ignition is switched on and the
wheels are turning at vehicle speeds of
approximately 9 mph (15 km/h) or
more. You could therefore lock yourself
out when the vehicle
is pushed
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 105 of 417
104 Controls in detailLocking and unlockingThe switches are located on the upper part
of the center console.Central locking switches1Locking
2UnlockingLocking
Press central locking switch1.
If all the doors are closed, the vehicle
locks.
Unlocking
Press central locking switch2.
The vehicle unlocks.
Warning!
G
You can open a locked door from inside at
any time. Open door only when conditions
are safe to do so.
iIf the vehicle was previously centrally
locked using the SmartKey, it will not
unlock using the central locking switch.
If the vehicle was previously locked
with the central locking switch
while in the global remote control
mode, the complete vehicle is un-
locked when a door is opened from
the inside
while in the selective remote con-
trol mode, only the door opened
from the inside is unlocked
Page 112 of 417
111 Controls in detail
Lighting
Interior lighting
The controls are located in the overhead
control panel.
1Left-hand reading lamp on/off
2Right-hand reading lamp on/off
3Interior lighting on/off
4Automatic control on/offAutomatic control
Activating
Slide switch 4 to the left.
Interior lamps switches on in darkness
when you
unlock the vehicle
open a door
remove the SmartKey from the
starter switch
In addition, the entry/exit lamps in the
door come on when you open a door.
The interior lamps are switched off af-
ter a preset time, see “Interior lighting
delayed switch-off” (
page 134).Deactivating
Slide switch4 to the right.
The interior lighting and the entry/exit
lamps remain switched off in darkness,
even when you
unlock the vehicle
open a door
remove the SmartKey from the
starter switch
iIf a door remains open, the interior
lamps switch off automatically after ap-
proximately five minutes.