2008 MERCEDES-BENZ SLK55AMG door lock

95 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. A child’s
unsupervised access to a vehicle could
result in an accident and/or serious
personal injury.
!To prevent possible malfunction, avoid
exposing the SmartKey to high levels of electro-
magnetic radiation.
!If you can no longer 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.

Check the batteries in the SmartKey and
replace them if necessary (
page 398).

Use the mechanical key to unlock the
driver’s door (
page 394) and the trunk
(
page 395).

Use the mechanical key to lock the vehicle
(
page 395).

Have the vehicle battery and the battery
connections checked (
page 422).
If the SmartKey is malfunctioning, contact
Roadside Assistance or an authorized
Mercedes-Benz Center.
iWithout the antenna on the left rear side of
the vehicle installed, the SmartKey signaling
range is considerably reduced. Hold the
SmartKey in close proximity towards the
antenna base when locking or unlocking the
vehicle.
iYou can also open and close the retractable
hardtop using the SmartKey* (
page 244).
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 interfer-
ence, 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 interference, 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.

96 Controls in detail
Locking and unlocking
Factory settingGlobal unlocking
Press buttonŒ.

All turn signal lamps flash once.

An acoustic warning sounds 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 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.

The locking knobs in the doors
move down.

The anti-theft alarm system is
armed.
iWhen unlocking or locking the vehicle with
the SmartKey, an acoustic signal sounds. The
signal is activated at the factory. If you wish to
deactivate the feature or adjust its signal
volume, contact an authorized Mercedes-Benz
Center.

97 Controls in detail
Locking and unlocking
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, the storage/telephone* compart-
ment under the armrest, the glove box, and
the fuel filler flap.
Press and hold buttonsŒand‹
simultaneously for about 5 seconds
until battery check lamp5
(
page 94) flashes twice.
The SmartKey will then function as fol-
lows:
Unlocking driver’s door and fuel filler
flap
Press buttonΠonce.

All turn signal lamps flash once.

An acoustic warning sounds 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.

An acoustic warning sounds once.

The locking knobs in the doors
move up.

The anti-theft alarm system is
disarmed.
Global locking
Press button‹.
With all doors and the trunk closed:

All turn signal lamps flash three
times.

An acoustic warning 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 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.
iIf the battery check lamp (page 94) does
not come on briefly during check, the SmartKey
batteries are discharged.

Replace the batteries (page 398).
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.

98 Controls in detail
Locking and unlocking
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.
Any authorized Mercedes-Benz Center will
be glad to supply you with a replacement.
Opening the doors from the inside
You can open a locked door from the in-
side. Open door only when conditions are
safe to do so.
1Inside door handle
2Locking knob
Pull on door handle1 on the respec-
tive door.
If the door was locked, locking knob2
will move up.
Opening a door causes its window to
open slightly. It will fully close when the
door is shut.
!A side window will not work if it is blocked
with ice or if the battery needs charging. If you
cannot shut a door, do not force it or you could
damage the door or the side window.
Fix whatever is affecting the window before
trying to shut the door.
iIf you hear a warning signal, you have forgot-
ten 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
remove 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.

99 Controls in detail
Locking and unlocking
Opening the trunk
You can open the trunk if the 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 and opens
slightly.
Pull on the handle.
Lift the trunk lid and swing it open.
The trunk lid can also be opened from the
inside in an emergency, see “Trunk lid
emergency release” (
page 102).
iIf the vehicle has previously been centrally
locked with the SmartKey, opening a door 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.
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.
!Always make sure there is sufficient over-
head 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.

102 Controls in detail
Locking and unlocking
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.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).
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

103 Controls in detail
Locking and unlocking
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 central locking switch and central
unlocking switch do not lock or unlock the
fuel filler flap or the interior storage com-
partments, such as the glove box.1Central locking switch
2Central unlocking switch
Locking
Press central locking switch1.
If all doors are closed, the vehicle
locks.
Unlocking
Press central unlocking switch2.
The vehicle unlocks.
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.
iYou can open a locked door from the inside.
Open door only when conditions are safe to do
so.
If the vehicle was previously centrally locked
using the SmartKey, it will not unlock using the
central unlocking switch.
If the vehicle was previously locked with the
central locking switch

and the SmartKey is set to factory settings,
the complete vehicle is unlocked when a
door is opened from the inside

and the SmartKey is set to selective settings,
only the door opened from inside is unlocked

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.