96 Controls in detail
Locking and unlocking
Factory settingGlobal unlocking
Press buttonŒ.
All turn signal lamps flash once.
An acoustic warning sounds once
(if equipped and feature activated).
For more information, see “Factory
setting” (
page 96).
The locking knobs in the doors
move up.
The anti-theft alarm system is
disarmed.
The vehicle will lock again automatically
and rearm 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
activatedGlobal locking
Press button‹.
With all doors and the trunk closed:
All turn signal lamps flash three
times.
An acoustic warning sounds three
times (if equipped and feature
activated). For more information,
see “Factory setting” (
page 96).
The locking knobs in the doors
move down.
The anti-theft alarm system is
armed.
iYour vehicle may be equipped with an
acoustic lock and unlock confirmation signal
feature. If your vehicle is equipped with this
feature and the feature is activated, an acoustic
signal will sound when the vehicle is locked or
unlocked using the SmartKey.
To determine whether or not your vehicle is
equipped with this feature, contact an
authorized Mercedes-Benz Center. If equipped
and you wish to activate or deactivate, or adjust
its signal volume, also contact an authorized
Mercedes-Benz Center.
98 Controls in detail
Locking and unlocking
Global locking
Press button‹.
With all doors and the trunk closed:
All turn signal lamps flash three
times.
An acoustic warning sounds three
times (if equipped and feature acti-
vated). For more information, see
“Factory setting” (
page 96).
The locking knobs in the doors
move down.
The anti-theft alarm system is
armed.Restoring to factory setting
Press and hold buttonsŒand‹
simultaneously for about 5 seconds
until battery check lamp5
(
page 94) flashes twice.
Checking the batteries
Press button‹orŒ.
The battery check lamp (
page 94)
comes on briefly to indicate that the
SmartKey batteries are in order.Loss 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 to your car insurance
company immediately.
If necessary have the mechanical lock
replaced.
Your authorized Mercedes-Benz Center
will be glad to supply you with a replace-
ment.
iIf the battery check lamp (page 94) does
not come on briefly during check, the SmartKey
batteries are discharged.
Replace the batteries (page 391).
You can obtain the required batteries at any
authorized Mercedes-Benz Center.
iIf the batteries are checked within signal
range of the vehicle, pressing
button‹orŒ will lock or unlock the
vehicle accordingly.
100 Controls in detail
Locking and unlocking
Opening the trunk
You can open the trunk when if vehicle is
stationary.
A minimum height clearance of 5.78 ft
(1.76 m) is required to open the trunk lid.Press and hold buttonŠ on the
SmartKey.
The trunk is unlocked.
Pull on the handle.
Lift the trunk lid.
The trunk lid can also be opened from the
inside in an emergency, see “Trunk lid
emergency release” (
page 101).
Closing the trunk
1Handle
Warning!G
Make sure the trunk is closed when the
engine is running and while driving.
Among other dangers, deadly carbon
monoxide (CO) gases may enter vehicle
interior resulting in unconsciousness and
death.
!When the trunk lid is lifted slightly, it swings
open upwards automatically. Always make sure
there is sufficient overhead clearance.
iThe vehicle or trunk must be unlocked
before the trunk lid can be opened.
The trunk lid can only be opened when the vehi-
cle is not in motion and the retractable hardtop
is fully opened or closed.
Warning!G
Make sure the trunk is closed when the
engine is running and while driving.
Among other dangers, deadly carbon
monoxide (CO) gases may enter vehicle
interior resulting in unconsciousness and
death.
iDo not place the SmartKey in the open
trunk. You may lock yourself out.
101 Controls in detail
Locking and unlocking
Lower the trunk lid using handle1.
Close the trunk lid with hands placed
flat on the trunk lid.
Trunk lid emergency release
With the emergency release button, the
trunk can be opened from inside the trunk.
1Emergency release button
Briefly press emergency release
button1.
The trunk lid unlocks and opens
slightly.
Push up the trunk lid to fully open.
iIf the vehicle was previously centrally
locked, the trunk lid will lock automatically when
closed. The turn signal lamps will flash three
times to confirm locking.
Warning!G
To prevent possible personal injury, always
keep hands and fingers away from the trunk
lid opening when closing the trunk lid.
Be especially careful when small children
are around.
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. A child’s
unsupervised access to a vehicle could
result in an accident and/or serious
personal injury.
102 Controls in detail
Locking and unlocking
Illumination of the emergency release
button:
The button flashes for 30 minutes after
opening the trunk.
The button flashes for 60 minutes after
closing the trunk.
Automatic central locking
The doors and the trunk automatically lock
when the vehicle is set into motion.
You can deactivate the automatic locking
using the control system, see “Setting
automatic locking” (
page 146).
Locking and unlocking from the inside
You can lock or unlock the doors and the
trunk from the 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.
The fuel filler flap will not be locked or
unlocked with the central locking or
unlocking switch, respectively.iThe emergency release button unlocks
the trunk while the vehicle is standing still or
in motion.
iThe emergency release button does not un-
lock the trunk if the vehicle battery is discharged
or disconnected.
iIf the vehicle has previously been centrally
locked with the SmartKey, opening the trunk
from the inside will trigger the anti-theft alarm
system.
To cancel the alarm, do one of the following:
Press buttonŒor‹on the
SmartKey.
Insert the SmartKey in the starter switch.
iYou can open a locked door from the inside.
Open door only when conditions are safe to do
so.
iThe doors unlock automatically after an
accident if the force of the impact exceeds a
preset threshold.
The vehicle locks automatically when the ignition
is switched on and the wheels are turning at a
vehicle speed of approximately 9 mph (15 km/h)
or more. You could therefore lock yourself out
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. A child’s
unsupervised access to a vehicle could
result in an accident and/or serious
personal injury.
116 Controls in detail
Lighting
Switching on hazard warning flasher
Press hazard warning flasher
switch1.
All turn signal lamps are flashing.
Switching off hazard warning flasher
Press hazard warning flasher switch1
again.
Interior lighting
The controls are located in the overhead
control panel.
1Interior lighting on/off
2Automatic control on/off
3Right reading lamp on/off
4Left reading lamp on/offAutomatic control
Deactivating
Press automatic control switch2 until
it engages at a deeper position than the
other switches.
The interior lighting remains switched
off in darkness, even when you
unlock the vehicle
remove the SmartKey from the
starter switch
open a door
iWith the hazard warning flasher activated
and the combination switch set for either left or
right turn, only the respective turn signals will
operate when the ignition is switched on.
iIf the hazard warning flasher has been
activated automatically, press hazard warning
flasher switch1 once to switch it off.
!An interior lamp switched on manually does
not go out automatically.
Leaving an interior lamp switch in the ON posi-
tion for extended periods of time with the engine
turned off could result in a discharged battery.
iThe interior lighting is factory-set to
automatic mode.
iWhen you open the trunk, the trunk lighting
switches on automatically.
240 Controls in detail
Retractable hardtop
Opening and closing the retractable
hardtop
For safety reasons, the retractable hardtop
can only be opened and closed when the
vehicle is standing still.
Warning!G
Before operating the switch for the retract-
able hardtop, make sure no persons are in-
jured by the moving parts (retractable
hardtop, roof frame, and trunk lid).
Hands must never be placed near the roof
frame, upper windshield area, retractable
hardtop, shelf behind roll bars, or trunk lid
while the retractable hardtop is being raised
or lowered. Serious personal injury may
occur.
If potential danger exists, release the re-
tractable hardtop switch. This immediately
interrupts the raising or lowering procedure.
You can then operate the retractable hard-
top switch to raise or lower the retractable
hardtop away from the danger zone.
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.
A child’s unsupervised access to a vehicle
could result in an accident and/or serious
personal injury.
!Never sit or place heavy objects on the rear
shelf. Doing so could cause damage to the
retractable hardtop and the rear shelf.
!Please keep in mind that weather conditions
can sometimes change rapidly. Make sure to
close the retractable hardtop when leaving the
vehicle. If water enters the vehicle interior,
vehicle electronics could be damaged which is
not covered by the Mercedes-Benz Limited
Warranty.
!When opening and closing the retractable
hardtop, make sure
there is sufficient clearance for the retract-
able hardtop to move up and the trunk lid to
move back
the luggage cover is extended and closed
the trunk is only loaded to the height of the
luggage cover
the luggage/cargo does not push the closed
luggage cover up
the trunk lid is closed
no roof luggage carrier is installed
the outside temperature is above +5°F
(-15°C)
Otherwise the roof and other parts of the vehicle
could be damaged.
241 Controls in detail
Retractable hardtop
Luggage cover
The luggage cover is located in the trunk.
Luggage cover
Closing
Pull the luggage cover at the handle in
direction of the arrow until it engages
on both sides at the trunk sill.Opening
Press the release handle on the lug-
gage cover.
Guide the luggage cover forward to its
end stop.Retractable hardtop
!To prevent damage to the retractable hard-
top or luggage/cargo when lowering the roof:
Load trunk only to the height of the luggage
cover.
Do not permit luggage/cargo to push up the
closed luggage cover.
Do not place anything on top or in front of
the luggage cover.
Do not place anything on the shelf behind
the roll bar.
Warning!G
To prevent possible accidents, drive the ve-
hicle only with the retractable hardtop either
completely closed and locked, or fully low-
ered into its storage compartment.
iFor safety reasons, the retractable hardtop
cannot be opened or closed while driving.
Make sure the retractable hardtop and the rear
window are dry before you open it. Otherwise
water may enter the interior and/or trunk.
iBefore operating the retractable hardtop via
the retractable hardtop switch, do the following
first:
Engage the parking brake (page 59).
Close the luggage cover.
Close the trunk lid.
Switch on the ignition (page 37).