Page 53 of 498
51 Getting started
Driving
Turn exterior lamp switch to
positionB.
The low beam headlamp indicator
lampB in the instrument cluster
comes on (
page 24).
High beam
The combination switch is located on the
left of the steering column.
Combination switch1High beam
2High beam flasher
Push combination switch in direction of
arrow1.
The high beam headlamp indicator
lampA in the instrument cluster
comes on (
page 24).
Turn signals
The combination switch is located on the
left of the steering column.Combination switch1Turn signals, right
2Turn signals, left
Press combination switch in direction
of arrow1or2.
The corresponding turn signal indicator
lampLorK in the instrument
cluster flashes (
page 24).
The combination switch resets automati-
cally after major steering wheel move-
ments.
iTo signal minor directional changes
such as changing lanes, press combi-
nation switch only to the point of resis-
tance and release. The corresponding
turn signals will flash three times.
Page 59 of 498

57 Getting started
Parking and locking
Press the seat belt release button
(page 45).
Allow the retractor to completely re-
wind the seat belt by guiding the latch
plate.
After exiting the vehicle, press the lock
button‹ on the SmartKey
(page 32).
All turn signal lamps flash three times.
The locking knobs in the doors move
down.
For more information, see “Locking and
unlocking” (
page 94).Turning off the engine with
KEYLESS-GO*
Place the gear selector lever inP.
Press the KEYLESS-GO start/stop but-
ton to shut off the engine.
With the driver’s door closed, the start-
er switch is now in position1. With the
driver’s door opened, the starter switch
is set to position0, same as SmartKey
removed from starter switch
(page 34).
Press the seat belt release button
(page 45).
Allow the retractor to completely re-
wind the seat belt by guiding the latch
plate.
iWith the SmartKey removed and the
driver’s door open, a warning sounds if
the vehicle’s exterior lamps are not
switched off.Warning!
G
To prevent possible personal injury, always
keep hands and fingers away from the door
openings when closing the doors. Be espe-
cially careful when small children are
around.
Before closing doors, make sure there is no
possibility of someone getting caught in a
door during closing.
iOpening a door causes the windows on
that side of the car to open slightly.
They will return to the up position when
the door is closed.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 60 of 498

58 Getting startedParking and locking
1Lock button on the door handle
After exiting the vehicle, press lock
button1 on the door handle or on the
trunk lid.
All turn signal lamps flash three times.
The locking knobs in the doors move
down.
For more information, see “Locking and
unlocking” (
page 94).
!If you hear a warning signal you have
either
forgotten to switch off the vehi-
cles’s exterior lamps before open-
ing the driver’s door, or
tried to turn off the engine while the
gear selector lever is not inP.
Turn off the lights or place the gear se-
lector lever inP.
iOpening a door causes the windows on
that side of the car to open slightly.
They will return to the up position when
the door is closed.
Warning!
G
To prevent possible personal injury, always
keep hands and fingers away from the door
openings when closing the doors. Be espe-
cially careful when small children are
around.
Before closing doors, make sure there is no
possibility of someone getting caught in a
door during closing.
Warning!
G
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. Unsupervised use of vehi-
cle equipment may cause an accident
and/or serious personal injury.
Page 92 of 498

90 Safety and SecurityAnti-theft systemsAnti-theft alarm system
Once the alarm system has been armed, a
visual and audible alarm is triggered when
someone opens
a door
the trunk
the hood.
The alarm system will also be triggered
when
someone attempts to raise the vehicle
(page 91)
opening the vehicle with the
mechanical key.Arming the alarm system
The indicator lamp is in the switch for the
tow-away alarm in the center console.
1Indicator lamp
Lock the vehicle with the SmartKey or
KEYLESS-GO*.
The turn signal lamps flash three times
to indicate that the alarm system is
activated. Indicator lamp1 begins to
flash after approximately 30 seconds
after arming the alarm system.
iThe alarm will stay on, even if the
activating element (a door, for
example) is immediately closed.
iIf the alarm stays on for more than
30 seconds, a call to the Response
Center is initiated automatically by the
Tele Aid system (
page 280) provided
Tele Aid service was subscribed to and
properly activated, and that necessary
cellular service and GPS coverage are
available.
iIf the turn signal lamps do not flash
three times, one of the following
elements may not be properly closed:
a door
the trunk lid
the hood
Close the respective element and lock
the vehicle again.
Page 93 of 498

91 Safety and Security
Anti-theft systems
Disarming the alarm system
Unlock your vehicle with the SmartKey
or KEYLESS-GO*.
The turn signal lamps flash once to
indicate that the alarm system is
deactivatedCanceling the alarm
To cancel the alarm:
With the SmartKey
Press the Œ or ‹ button on the
SmartKey.
or
Insert the SmartKey in the starter
switch.
With KEYLESS-GO*
Pull the outside door handle.
or
Press the KEYLESS-GO start/stop
button.
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.
iThe alarm system will rearm automati-
cally after approximately 40 seconds if
no door or the trunk lid was opened.
iThe tow-away protection alarm is
triggered, for example, if the vehicle is
lifted on one side.
If the alarm stays on for more than
30 seconds, a call to the Response
Center is initiated automatically by the
Tele Aid system (
page 280) provided
Tele Aid service was subscribed to and
properly activated, and that necessary
cellular service and GPS coverage are
available.
Page 98 of 498

96 Controls in detailLocking and unlockingFactory setting
Global unlocking
Press buttonŒ.
All turn signal lamps flash once. The
locking knobs in the doors move up.
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
unlocking 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‹.
All turn signal lamps flash three times.
The locking knobs in the doors move
down. 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
locking knob in the driver’s door moves
up. The anti-theft alarm system is
disarmed
Global unlocking
Press buttonŒ twice.
All turn signal lamps flash once. The
locking knobs in the doors move up.
The anti-theft alarm system is
disarmed
Page 99 of 498

97 Controls in detail
Locking and unlocking
Global locking
Press button‹.
All turn signal lamps flash three times.
The locking knobs in the doors move
down. The anti-theft alarm system is
armed.
Restoring to factory setting
Press and hold buttonsŒ and‹
simultaneously for about six seconds
until battery check lamp5 flashes
twice.Checking the batteries
Press button‹ orŒ.
Battery check lamp5 comes on
briefly to indicate that the SmartKey
batteries are in order.
!If you can no longer lock or unlock the
vehicle with the SmartKey, then 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 97) and replace
them if necessary (
page 402).
Use the mechanical key to unlock
the driver’s door (
page 397) and
the trunk (
page 398).
Have the vehicle battery and the
battery connections checked
(page 420).
Use the mechanical key to lock the
driver’s door (
page 398).
If the SmartKey is malfunctioning,
contact an authorized Mercedes-Benz
Center.
iIf battery check lamp5 does not
come on briefly during check, then the
SmartKey batteries are discharged.
Replace the batteries (
page 402).
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.
Page 100 of 498

98 Controls in detailLocking and unlockingUnlocking and opening the trunk lid
You can unlock and open the trunk lid
separately.
A minimum height clearance of 5.71 ft
(1.74 m) is required to open the trunk lid.
Press and hold button Š until the
trunk lid unlocks and begins to open.
The trunk can also be opened from its
inside in an emergency, see “Trunk lid
emergency release” (
page 109).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 immediately to your
car insurance company.
If necessary, have the mechanical lock
replaced.
Your authorized Mercedes-Benz Center
will be glad to supply you with a replace-
ment.
!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.
iIf the vehicle was previously centrally
locked, the trunk lid will lock automati-
cally when closed (
page 107). The
turn signals will flash three times to
confirm locking.