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Close the respective element.XDisarming: Unlock the vehicle with the
SmartKey.
The turn signal lamps flash once to indicate
that the alarm system is disarmed.
iThe vehicle will lock and the alarm system
will rearm automatically again after
approximately 40 seconds unless you open
a door or the tailgate.
Tow-away alarm
Once the tow-away alarm is armed, a visual
and audible alarm will be triggered when
someone attempts to raise the vehicle.
To cancel the alarm after it has been
triggered, see “Canceling the alarm”
(Y page 55).
XArming: Lock the vehicle with the
SmartKey.
The tow-away alarm is armed after about
30 seconds automatically.
XDisarming: Unlock the vehicle with the
SmartKey.
The tow-away alarm remains disarmed until
you lock the vehicle again.
Disabling tow-away alarm
To prevent triggering the tow-away alarm,
disable the tow-away alarm feature before
towing the vehicle, or when parking on a
surface subject to movement, such as a ferry
or auto train.
XRemove the SmartKey from the starter
switch.
XPress tow-away alarm switch :.
Indicator lamp ; comes on briefly.
XExit and lock the vehicle.
The tow-away alarm remains disabled until
you lock the vehicle again.
Canceling the alarm
To cancel the alarm, do one of the following:
XInsert the SmartKey in the starter switch.XPress button % or & on the
SmartKey.
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Vehicle equipment ..............................58
Locking and unlocking .......................58
Starter switch positions .....................62
Seats ....................................................62
Multifunction steering wheel .............67
Mirrors .................................................69
Memory function .................................70
Lighting ................................................72
Wipers ..................................................79
Power windows ...................................81
Driving and parking ............................82
Automatic transmission .....................87
Transfer case .......................................91
Differential locks .................................93
Instrument cluster ..............................95
Control system ....................................97
Driving systems ................................112
Climate control system ....................119
Front windshield defroster ..............124
Rear window defroster .....................125
Power tilt/sliding sunroof ...............125
Loading and storing ..........................126
Useful features .................................131
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Vehicle equipment
iThis Operator’s Manual describes all
features, standard or optional, potentially
available for your vehicle at the time of
purchase. Please be aware that your
vehicle might not be equipped with all
features described in this manual.
Locking and unlocking
Notes
GObserve Safety notes, see page 44.
When unlocking the vehicle, all turn signal
lamps flash once. The locking knobs in the
doors move up. The anti-theft alarm system
is disarmed.
When locking the vehicle, all turn signal lamps
flash three times. The locking knobs in the
doors move down. The anti-theft alarm
system is armed.
All doors, the hood and the tailgate must be
closed.
! If you cannot lock or unlock the vehicle
with the SmartKey, the batteries in the
SmartKey are discharged, the SmartKey is
malfunctioning, or the vehicle battery is
drained.
RCheck the batteries in the SmartKey and
replace them if necessary.
RUse the mechanical key to unlock the
driver’s door and the tailgate.
RUse the mechanical key to lock the
vehicle.
RHave the vehicle battery and the vehicle
battery connections checked at an
authorized Mercedes-Benz Center.
If the SmartKey is malfunctioning, contact
Roadside Assistance or an authorized
Mercedes-Benz Center.
SmartKey
Your vehicle comes supplied with two
SmartKeys, each with remote control and a
removable mechanical key.
The SmartKey centrally locks and unlocks:
Rthe doors
Rthe tailgate
Rthe fuel filler flap
: &Lock button; %Unlock button=Battery check lamp
iUSA only:
This device complies with Part 15 of the
FCC Rules. Operation is subject to the
following two conditions:
1. This device may not cause harmful
interference, and
2. this device must accept any
interference received, including
interference that may cause undesired
operation.
Any unauthorized modification to this
device could void the user’s authority to
operate the equipment.
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Example illustration driver’s door
If the vehicle has previously been locked with
the SmartKey, opening a door or the tailgate
from the inside will trigger the anti-theft alarm
system.
To cancel the alarm, see (Y page 55).
XFront doors: Pull on inside door
handle ; on the respective front door.
If the door was locked, locking knob : will
move up.
XRear doors: Pull up locking knob on the
respective rear door to unlock door.
XPull on the inside door handle on the
respective rear door.
Automatic central locking
The doors and the tailgate lock automatically
when the vehicle is set into motion.
You can open a locked door from the inside.
Open door only when conditions are safe to
do so.
The doors and the tailgate are designed to
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 vehicle speeds of above 9 mph
(15 km/h). You could therefore lock yourself
out when the vehicle is pushed or towed or is
on a test stand.
You can deactivate the automatic central
locking using the control system
(Y page 108).
Locking and unlocking from the inside
GObserve Safety notes, see page 44.
You can lock or unlock the vehicle from inside
using the central locking switches. This can
be useful, for example, if you want to lock the
vehicle before starting to drive.
The central locking switches do not lock or
unlock the fuel filler flap.
XLocking: Press central locking switch ;.
When all doors and the tailgate are closed,
the vehicle locks.
XUnlocking: Press central unlocking
switch :.
You can open a locked door from inside at any
time. Open door only when conditions are
safe to do so.
If the vehicle was previously locked with the
central locking switch
Rand the SmartKey is set to factory settings,
the complete vehicle is unlocked when a
front door is opened from the inside
Rand the SmartKey is set to selective
settings, only the front door opened from
the inside is unlocked
If the vehicle was previously locked centrally
with the SmartKey, it will not unlock using the
central unlocking switch.
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TailgateGWarning!
Make sure the tailgate 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.
GWarning!
The tailgate swings open to one side. Always
make sure there is sufficient clearance for the
tailgate.
Make sure the tailgate 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.
Opening the tailgate from the outside
XUnlock the vehicle (Y page 58).XPress lock cylinder : and pull on
handle ;.
XOpen the tailgate to the side.
Closing the tailgate from the outside
GObserve Safety notes, see page 44.GWarning!
To prevent possible personal injury, always
keep hands and fingers away from the cargo
compartment opening when closing the
tailgate. Be especially careful when small
children are around.
To prevent an inadvertent lockout, do not
place the SmartKey in the cargo
compartment.
Opening the tailgate from the inside
XPull on inside door handle ;.
If the door was locked:
XPull up locking knob :.XPull on inside door handle ;.
Separately locking and unlocking the
tailgate
To deny any unauthorized person access to
the tailgate, lock it separately with the
mechanical key.
XLocking: Close the tailgate.XRemove the mechanical key from the
SmartKey (Y page 221).
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XInsert the mechanical key in the lock
cylinder.
XTurn the mechanical key clockwise to
position 2 and remove the mechanical
key in that position to lock the tailgate.
The tailgate remains locked even when the
vehicle is centrally unlocked.
You can only cancel the separate tailgate
locking mode by means of the mechanical
key.
XUnlocking: Remove the mechanical key
from the SmartKey (Y page 221).
XInsert the mechanical key in the lock
cylinder.
XTurn the mechanical key counterclockwise
to neutral position 1 and remove the
mechanical key in that position to unlock
the tailgate.
You can now open the tailgate.
Starter switch positions
SmartKey
GObserve Safety notes, see page 44.
Starter switch
gFor removing SmartKey (gear selector
lever must be in park position P)
1Power supply for some electrical
consumers, e.g. radio
2Ignition (power supply for all electrical
consumers) and driving position
3Starting positionWhen you switch on the ignition, all lamps
(except low-beam headlamp indicator lamp,
high-beam headlamp indicator lamp, and turn
signal indicator lamps unless activated) in the
instrument cluster come on. If a lamp in the
instrument cluster fails to come on when the
ignition is switched on, have it checked and
replaced if necessary. If a lamp in the
instrument cluster remains on after starting
the engine or comes on while driving, refer to
“Lamps in instrument cluster” (Y page 213).
If the SmartKey is left in starter switch
position 0 for an extended period of time, it
can no longer be turned in the starter switch.
In this case, the steering is locked. To unlock,
remove SmartKey from the starter switch and
reinsert.
The steering is locked when the SmartKey is
removed from the starter switch.
! If the SmartKey cannot be turned in the
starter switch, the vehicle battery may not
be sufficiently charged.
RCheck the vehicle battery and charge it
if necessary.
RGet a jump start.
Always remove the SmartKey from the
starter switch when the engine is not in
operation. This will help to prevent
accelerated vehicle battery discharge or a
completely discharged vehicle battery.
Seats
Safety notes
GWarning!
In order to avoid possible loss of vehicle
control, all seat, head restraint, steering
wheel, and rear view mirror adjustments, as
well as fastening of seat belts, must be done
before the vehicle is put into motion.
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