2006 MERCEDES-BENZ CLK350 door lock

93 Safety and Security
Anti-theft systems
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.Disarming the alarm system

Unlock the vehicle with the SmartKey
or KEYLESS-GO*.
The turn signal lamps flash 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.
The SmartKey with KEYLESS-GO must
be inside the vehicle.
iIf the turn signal lamps do not flash
three times, one of the following
elements may not be properly closed:

a door


the trunk
Close the respective element and lock
the vehicle again.
iThe alarm system will rearm automati-
cally after approximately 40 seconds if
neither a door nor the trunk lid was
opened.

94 Safety and SecurityAnti-theft systemsTow-away alarm
Once the tow-away alarm is armed, a visual
and audible alarm will be triggered when
someone attempts to raise the vehicle.
Arming tow-away alarm
Lock the vehicle with the SmartKey or
KEYLESS-GO*.
The tow-away alarm is automatically
armed after about 30 seconds.Disarming tow-away alarm
To prevent triggering the tow-away alarm,
switch off 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.
1Tow-away alarm off switch
2Indicator lamp

Switch off the ignition and remove the
SmartKey.

Press switch1.
Indicator lamp2 in switch1 comes
on briefly.

Exit and lock the vehicle with the
SmartKey or (vehicles with
KEYLESS-GO*) the lock button on each
outside door handle or trunk.
The tow-away alarm remains disarmed
until you lock the vehicle again.
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 289) provided
Tele Aid service was subscribed to and
properly activated, and that necessary
cellular service and GPS coverage are
available.
iWhen you unlock the vehicle, the
tow-away protection disarms
automatically. The tow-away alarm
remains disarmed until you lock the
vehicle again.
iYou cannot disarm the tow-away alarm
while the ignition is switched on.

96 Controls in detailIn the “Controls in detail” section you will
find detailed information on how to oper-
ate the equipment installed in your vehicle.
If you are already familiar with the basic
functions of your vehicle, this section will
be of particular interest to you.
To quickly familiarize yourself with the ba-
sic functions of the vehicle, refer to the
“Getting started” section of this manual.
The corresponding page numbers are giv-
en at the beginning of each segment.Locking and unlocking
For more information on locking and
unlocking, see “Getting started”
(page 32) and (
page 57).
SmartKey
Your vehicle comes supplied with two
SmartKeys, each with remote control and
a removable mechanical key.
The locking tabs for the mechanical key
portion of the two SmartKeys are a
different color to help distinguish each
SmartKey unit.
The SmartKey provides an extended oper-
ating range. To prevent theft, however, it is
advisable to only unlock the vehicle when
you are in close proximity to it.
The SmartKey centrally locks and unlocks:

the doors


the glove box


the trunk


the fuel filler flap
SmartKey with remote control1‹Lock button
2Š Opening button for trunk
3Mechanical key locking tab
4ΠUnlock button
5Battery check lamp
6Â Panic button (
page 86)

97 Controls in detail
Locking and unlocking
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. It is possible
for children to open a locked door from the
inside, which could result in an accident
and/or serious injury.!To prevent possible malfunction, avoid
exposing the SmartKey to high levels of
electromagnetic radiation.
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.
iCanada only:
This device complies with RSS-210 of
Industry Canada. Operation is subject
to the following two conditions:
(1) This device may not cause interfer-
ence, and
(2) this device must accept any
interference received, including
interference that may cause
undesired operation of the device.
Any unauthorized modification to this
device could void the user’s authority
to operate the equipment.iYou can also open and close the soft
top, see “Opening and closing the soft
top with the SmartKey” (
page 260),
and the power windows using the
SmartKey, see “Summer opening fea-
ture” (
page 252) and see “Conve-
nience closing feature” (
page 253).

98 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 rearm the anti-theft alarm system
within approximately 40 seconds of
unlocking if:


neither a door nor the trunk is opened


the SmartKey is not inserted in the
starter switch


the central locking switch is not
activatedGlobal locking

Press button‹.
With the trunk and both doors closed,
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 5 seconds un-
til battery check lamp5 flashes twice.
The SmartKey will then function as follows:Unlocking driver’s door and fuel filler
flap

Press buttonΠonce.
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 buttonΠtwice.
All turn signal lamps flash once. The
locking knobs in the doors move up.
The anti-theft alarm system is
disarmed.
Global locking

Press button‹.
With the trunk and both doors closed,
all turn signal lamps flash three times.
The locking knobs in the doors move
down. The anti-theft alarm system is
armed.

99 Controls in detail
Locking and unlocking
Restoring to factory setting
Press and hold buttonsŒ and‹
simultaneously for about 6 seconds un-
til 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.Unlocking and opening the trunk
You can unlock and open the trunk
separately.
A minimum height clearance of 5.41 ft
(1.65 m) 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 in-
side in an emergency, see “Trunk emer-
gency release” (
page 115).
!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 99) and replace
them if necessary (
page 435).


Use the mechanical key to unlock
the driver’s door (
page 419) and
the trunk (
page 420).


Use the mechanical key to lock the
driver’s door (
page 420) and the
trunk (
page 116).


Have the vehicle battery and the
battery connections checked
(page 453).
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 435).
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.
!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.
Vehicles with trunk opening/closing
system*: To stop the opening proce-
dure, press button Š. The trunk lid
stops moving.iIf the trunk does not open, it is still
locked separately (
page 116).

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 mechanical lock
replaced.
Your authorized Mercedes-Benz Center
will be glad to supply you with a
replacement.
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 locking tabs for the mechanical key
portion of the two SmartKeys with
KEYLESS-GO are a different color to help
distinguish each SmartKey with
KEYLESS-GO unit.
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 glove box


the trunk


the fuel filler flap
SmartKey with KEYLESS-GO1‹Lock button
2Š Opening button for trunk
3Mechanical key locking tab
4ΠUnlock button
5Battery check lamp
6Â Panic button (
page 86)
iWhen the passenger outside door han-
dle is pulled, the vehicle is centrally un-
locked.

102 Controls in detailLocking and unlockingImportant notes on using KEYLESS-GO*

You can also use the SmartKey with
KEYLESS-GO like a normal SmartKey
(page 96).


You can combine KEYLESS-GO func-
tions with normal SmartKey functions
(e.g. unlocking with KEYLESS-GO and
locking with the ‹button).


Always carry the SmartKey with
KEYLESS-GO with you.


Never store the SmartKey with
KEYLESS-GO together with:

electronic items such as a cellular
phone or another SmartKey with
KEYLESS-GO.


metallic objects such as coins or
metal foil.
Doing so could impair the function of
the KEYLESS-GO system.


To lock or unlock the vehicle, the
SmartKey with KEYLESS-Go must be
located outside the vehicle within ap-
proximately 3 ft (1 m) of a door or the
trunk lid.


In order to start the engine with the
SmartKey with KEYLESS-GO:

The SmartKey with KEYLESS-GO
must be located in the vehicle.


All doors must be closed.


The brake pedal must be firmly de-
pressed. Do not depress the accel-
erator.


If you have started the engine with the
KEYLESS-GO start/stop button
(page 35), you can only turn it off
again with this button, even if you have
put the SmartKey in the starter switch
in the meantime.


This does not apply if, after starting, the
gear selector lever is still in positionP.
and the SmartKey is then inserted in
the starter switch. The SmartKey will
then have priority over the
KEYLESS-GO function and the vehicle’s
electrical system will operate accord-
ing to the position of the SmartKey in
the starter switch, even stopping the
engine.


If the SmartKey with KEYLESS-GO is
positioned farther away from the vehi-
cle, the system may no longer recog-
nize the SmartKey with KEYLESS-GO.
The vehicle then cannot be locked or
the engine started via the KEYLESS-GO
system.