56 Getting started
Driving
Turn signals
Combination switch
1Turn signals, right
2Turn signals, left
Press the combination switch in
direction of arrow1or2.
The corresponding turn signal indicator
lampLorK in the instrument
cluster flashes (
page 28).
The combination switch resets
automatically after major steering wheel
movements.
Windshield wipers
Combination switch
1Single wipe
Wiping with windshield washer fluid
2Switching on windshield wipers
Switch on the ignition (page 38).Switching on windshield wipers
Turn the combination switch to the de-
sired position depending on the
intensity of the rain.
0Windshield wipers off
IIntermittent wiping
IINormal wiper speed
IIIFast wiper speed
iTo signal minor directional changes such as
changing lanes, press the combination switch
only to the point of resistance and release. The
corresponding turn signals will flash three times.!Do not operate the windshield wipers when
the windshield is dry. Dust that accumulates on
a windshield might scratch the glass and/or
damage the wiper blades when wiping occurs on
a dry windshield. If it is necessary to operate the
windshield wipers in dry weather conditions, al-
ways operate the windshield wipers with wind-
shield washer fluid (
page 57).
61 Getting started
Parking and locking
Releasing seat belts
Press the seat belt release button
(
page 49).
Allow the retractor to completely re-
wind the seat belt by guiding the latch
plate.
LockingExit the vehicle, take the SmartKey or
the SmartKey with KEYLESS-GO* with
you, and close all doors and the trunk
lid.iIf you hear a warning signal, you have tried
to turn off the engine while the gear selector le-
ver was not inP.
In addition, the message
Selector Lever In
Park
appears in the multifunction display.
Place the gear selector lever inP.
!Make sure the seat belt retracts fully so that
the seat belt and/or latch plate cannot get
caught or pinched in the door or in the seat
mechanism. This can damage the seat belt and
impair the effectiveness of the seat belt, and/or
cause damage to the door and/or door trim pan-
el. Such damage is not covered by the
Mercedes-Benz Limit Warranty.
Damaged seat belts must be replaced. Contact
an authorized Mercedes-Benz Center.
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. A child’s unsupervised ac-
cess to a vehicle could result in an accident
and/or serious personal injury.
iIf you hear a warning signal you have
forgotten to switch off the low beam headlamps
or the parking lamps before opening the driver’s
door.
In addition the message
Switch Off Lights
appears in the multifunction display.
Switch off the low beam headlamps or the park-
ing lamps.
If the message
Switch Off Lights or Re-
move Key
appears in the multifunction display
remove the SmartKey from the starter switch or
switch off the automatic headlamp mode.
!Failure to switch off the exterior lamps when
leaving the vehicle may result in a discharged
battery.
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.
62 Getting started
Parking and locking
Locking with the SmartKey
Press lock button‹on the
SmartKey (
page 36).
With the trunk and both doors closed:
All turn signal lamps flash three
times.
An acoustic signal sounds three
times.
For more information, see “Factory
setting” (
page 106).
The locking knobs in the doors
move down.
The anti-theft alarm system is
armed.
For more information, see “SmartKey”
(
page 100).Locking with KEYLESS-GO*
1Lock button
Press lock button1 on an outside
door handle.With the trunk and both doors closed:
All turn signal lamps flash three
times.
An acoustic signal sounds three
times.
For more information, see “Factory
setting” (
page 106).
The locking knobs in the doors
move down.
The anti-theft alarm system is
armed.
For more information, see “SmartKey with
KEYLESS-GO*” (
page 103).
98 Safety and Security
Anti-theft systems
Arming the alarm system
The indicator lamp is in the center console.
1Indicator lamp
Lock the vehicle with the SmartKey or
KEYLESS-GO*.The turn signal lamps flash three times,
and an acoustic signal sounds three
times, to indicate that the alarm sys-
tem is armed.
Indicator lamp1 begins to flash after
approximately 30 seconds after arming
the alarm system.
Disarming the alarm system
Unlock your vehicle with the SmartKey
or KEYLESS-GO*.
The turn signal lamps flash once, and
an acoustic signal sounds once, to
indicate that the alarm system is
disarmed.Canceling 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 an outside door handle.
The SmartKey with KEYLESS-GO must
be within 3 ft (1 m) of the vehicle.
or
Press the KEYLESS-GO start/stop
button (
page 39).
The SmartKey with KEYLESS-GO must
be inside the vehicle.
iIf the alarm stays on for more than
30 seconds, a call to the Response Center is ini-
tiated automatically by the Tele Aid system
(
page 295) provided Tele Aid service was sub-
scribed to and properly activated, and that nec-
essary cellular service and GPS coverage are
available.
iIf the turn signal lamps do not flash three
times, and the acoustic signal do not sounds
three times (if equipped and feature activated),
one of the following elements may not be prop-
erly closed:
a door
the trunk
Close the respective element and lock the vehi-
cle again.
iThe alarm system will rearm automatically
after approximately 40 seconds if neither a door
nor the trunk lid was opened.
102 Controls in detail
Locking and unlocking
Factory setting
Global unlocking
Press buttonŒ.
All turn signal lamps flash once.
An acoustic signal sounds once.
The locking knobs in the doors
move up.
The anti-theft alarm system is dis-
armed.
The vehicle will lock again automatically
and rearm 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
activated
Global locking
Press button‹.
With the trunk and both doors closed:
All turn signal lamps flash three
times.
An acoustic signal sounds 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 press-
ing buttonŒ only unlocks the driver’s
door and the fuel filler flap.
Press and hold buttonsŒ and‹
simultaneously for about 5 seconds un-
til battery check lamp5 (
page 100)
flashes twice.
The SmartKey will then function as fol-
lows:
Unlocking driver’s door and fuel filler
flap
Press buttonŒ once.
All turn signal lamps flash once.
An acoustic signal sounds once.
The locking knob in the driver’s
door move up.
The anti-theft alarm system is dis-
armed.
Global unlocking
Press buttonŒ twice.
All turn signal lamps flash once.
An acoustic signal sounds once.
iWhen unlocking or locking the vehicle with
the SmartKey an acoustic signal sounds. The
acoustic signal is activated at the factory. If you
wish to deactivate the feature, or adjust its signal
volume, contact an authorized Mercedes-Benz
Center.
103 Controls in detail
Locking and unlocking
The locking knobs in the doors
move up.
The anti-theft alarm system is dis-
armed.
Global locking
Press button‹.
With the trunk and both doors closed:
All turn signal lamps flash three
times.
An acoustic signal sounds 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 5 seconds un-
til battery check lamp5 (
page 100)
flashes twice.Unlocking and opening the trunk
You can unlock and open the trunk
separately.
A minimum height clearance of 5.71 ft
(1.74 m) CLK coupe or 5.41 ft (1.65 m)
CLK cabriolet is required to open the
trunk lid.
Press and hold button Š until trunk
unlocks and begins to open.
The trunk can also be opened from its
inside in an emergency, see “Trunk emer-
gency release” (
page 117).
SmartKey with KEYLESS-GO*
Vehicles equipped with KEYLESS-GO come
with two SmartKeys with KEYLESS-GO,
each with remote control and a removable
mechanical key.
The KEYLESS-GO function is integrated
into the SmartKey. On these vehicles, the
validity of the SmartKey with KEYLESS-GO
is checked every time you pull an outside
door handle.
If the SmartKey with KEYLESS-GO is valid,
your vehicle unlocks
the doors
the trunk
the fuel filler flap
the glove box
!The trunk lid swings open upwards automat-
ically. Always make sure there is sufficient over-
head clearance.
Vehicles with trunk opening/closing system*: To
stop the opening procedure, press button Š.
The trunk lid stops moving.
iIf the trunk does not open, it is still locked
separately (
page 118).
106 Controls in detail
Locking and unlocking
with the starter switch position1,
the message:
Key Not Detected
appears in the multifunction display
with the engine running, the
message:
Key Not Detected
appears in the multifunction display
while driving off.
Find the SmartKey with KEYLESS-GO or
change its present location immediate-
ly (e.g. place it on the front passenger
seat or insert it in shirt pocket).
If you have started the engine with the
KEYLESS-GO start/stop button
(
page 39), you can turn it off again
with:
the KEYLESS-GO start/stop button
the SmartKey inserted in the starter
switch, when the gear selector le-
ver is in positionP
Remember that the engine can be
started by anyone with a SmartKey
with KEYLESS-GO that is left inside the
vehicle.
Possibility 1:
(One SmartKey with KEYLESS-GO in
the vehicle, one SmartKey with
KEYLESS-GO outside the vehicle):
If you leave the SmartKey with
KEYLESS-GO behind when exiting and
locking the vehicle, no message ap-
pears in the multifunction display.
Possibility 2:
(One SmartKey with KEYLESS-GO in
the vehicle, no SmartKey with
KEYLESS-GO outside the vehicle):
When exiting and trying to lock the ve-
hicle, the message
Key Detected In Vehicle
will appear in the multifunction display.
The vehicle will not be locked.Factory setting
Global unlocking
Pull an outside door handle (SmartKey
with KEYLESS-GO must be near this
door).
All turn signal lamps flash once.
An acoustic signal sounds once.
The locking knobs in the doors
move up.
The anti-theft alarm system is dis-
armed.
iWhen unlocking or locking the vehicle with
the SmartKey with KEYLESS-GO an acoustic sig-
nal sounds. The acoustic signal is activated at
the factory. If you wish to deactivate the feature,
or adjust its signal volume, contact an authorized
Mercedes-Benz Center.
107 Controls in detail
Locking and unlocking
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 central locking switch is not
activated.
Global locking
Press the lock button on an outside
door handle (
page 62).
With the trunk and both doors closed:
All turn signal lamps flash three
times.
An acoustic signal sounds 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 with
KEYLESS-GO so when you, pull the driver’s
door handle only the driver’s door and the
fuel filler flap unlocks.
Press and hold buttonsŒ and‹
simultaneously for about 5 seconds un-
til battery check lamp5 (
page 104)
flashes twice.
The SmartKey with KEYLESS-GO will
then function as follows:Unlocking driver’s door and fuel filler
flap
Pull the driver’s outside door handle.
All turn signal lamps flash once.
An acoustic signal sounds once.
The locking knob in the driver’s
door move up.
The anti-theft alarm system is dis-
armed.
Global unlocking
Pull the outside door handle on the pas-
senger side.
All turn signal lamps flash once.
An acoustic signal sounds once.
The locking knobs in the doors
move up.
The anti-theft alarm system is dis-
armed.
iThe vehicle could inadvertently be unlocked
if the SmartKey with KEYLESS-GO is
within 3 ft (1 m) of the vehicle and:
an outside door handle is splashed with wa-
ter, or
you attempt to clean an outside door handle.