2012 MERCEDES-BENZ SLK250 door lock

Problem Possible causes/consequences and
0001 Solutions
The engine cannot be
started using the
SmartKey. The on-board voltage is too low.
X
Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
X Check the starter battery and charge it if necessary
(Y page 282).
or
X Jump-start the vehicle (Y page 285).
or
X Consult a qualified specialist workshop. The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle. Ad
oor is open. Therefore, the SmartKey cannot be detected as
easily.
X Close the door and try to start the vehicle again. There is interference from a powerful source of radio waves.
X
Start your vehicle with the SmartKey in the ignition lock. Doors
Important safety notes
G
WARNING
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unsupervised in the
vehicle, even if they are secured in a child
restraint system, and do not give them access
to an unlocked vehicle. Achild's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. They could:
R injure themselves on vehicle parts
R be seriously or fatally injured by extreme
heat or cold
R injure themselves or have an accident with
vehicle equipment that may still be in
operation even after the SmartKey has
been removed from the ignition, such as the
seat adjustment, steering wheel
adjustment or memory function. If children open a door, they could cause
severe or even fatal injury to other persons; if
they get out of the vehicle, they could injure
themselves when doing so or be seriously or
even fatally injured by any passing traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and a child could be burned on these
parts. G
WARNING
Do not carry heavy or hard objects in the
passenger compartmentu nless they are
firmly secured in place.
Unsecured or improperly positioned cargo
increases a child's risk of injury in the event
of:
R strong braking maneuvers
R sudden changes of direction
R an accident 74
DoorsOpening/closing

Unlocking and opening doors from
the inside
You can open a door from inside the vehicle
even if it has been locked.
Only open the door when the traffic situation
permits.
If the vehicle was previously locked with the
SmartKey or with KEYLESS-GO, opening the
vehicle from the inside will activate the anti-
theft alarm system. Switch off the alarm
(Y page 65). X
Pull door handle 0003.
If the door is locked, locking knob 0002pops
up. The door is unlocked and can be
opened.
i When a door is opened, the side window
on that side opens slightly. When the door
is closed, the side window closes again.
! The side windows will not open/close if
the battery is discharged or if the side
windows have iced up. It will then not be
possible to close the door. Do not attempt
to force the door closed. You could
otherwise damage the door or the side
window. Centrally locking and unlocking the
vehicle from the inside
You can centrally lock or unlock the vehicle
from the inside.
The central locking/unlocking button does
not lock or unlock the fuel filler flap or the stowage compartments, such as the glove
box.
i
You cannot unlock the vehicle centrally
from the inside if the vehicle has been
locked with the SmartKey or KEYLESS-GO. X
To unlock: press button 0002.
X To lock: press button 0003.
If all the doors are closed, the vehicle locks.
You can open a door from inside the vehicle
even if it has been locked. Only open the door
when the traffic situation permits.
If the vehicle has been locked with the central
locking button:
R and the SmartKey is set to its factory
setting, the entire vehicle is unlocked if a
door is opened from the inside
R and the SmartKey is set to an individual
setting, only the door that is opened from
inside the vehicle is unlocked. Automatic locking feature
When the ignition is switched on and the
wheels of the vehicle are turning at a speed
of more than 9 mph (15 km/h), the vehicle
locks automatically.
You could therefore be locked out when:
R the vehicle is being pushed.
R the vehicle is being towed.
R the vehicle is being tested on a
dynamometer. Doors
75Opening/closing Z

X
To deactivate: press and hold button 0002
for abou tfive seconds until a tone sounds.
X To activate: press and hold button 0003for
about five seconds until a tone sounds.
i If you press one of the two buttons and
do not hear a tone, the relevant setting has
already been selected.
You can also switch the automatic locking
function on and off using the on-board
computer (Y page 193). Unlocking the driver's door
(mechanical key)
If the vehicle can no longer be unlocked with
the SmartKey, use the mechanical key.
If you use the mechanical key to unloc kand
open the driver's door, the anti-thef talarm
system will be triggered ( Ypage 65).
X Take the mechanical key out of the
SmartKey (Y page 70).
X Insert the mechanical key into the lock of
the driver's door as far as it will go. X
Turn the mechanical key counter-clockwise
to position 0005.
The door is unlocked.
X Turn the mechanical key back and remove
it.
X Insert the mechanical key into the
SmartKey. Locking the vehicle (mechanical key)
If the vehicle can no longer be locked with the
SmartKey, use the mechanical key.
X Open the driver's door.
X Close the front-passenger door and the
trunk lid.
X Press the locking button (Y page 75).
X Check whether the locking knob on the
front-passenger door is still visible. Press
down the locking knob by hand, if
necessary.
X Close the driver's door.
X Take the mechanical key out of the
SmartKey (Y page 70).
X Insert the mechanical key into the lock of
the driver's door as far as it will go. X
Turn the mechanical key clockwise as far
as it will go to position 0005.
X Turn the mechanical key back and remove
it.
X Make sure that the doors and the trunk lid
are locked.
X Insert the mechanical key into the
SmartKey. 76
DoorsOpening/closing

i
If you lock the vehicle as described above,
the fuel filler flap is not locked. The anti-
theft alarm system is not armed. Trunk
Important safety notes
Do not leave the SmartKey in the trunk. You
could otherwise lock yourself out. G
WARNING
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave childre nunsupervised in the
vehicle, eve nifthey are secured in a child
restraint system, and do not give them access
to an unlocked vehicle. Achild's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. They could:
R injure themselves on vehicle parts
R be seriously or fatally injured by extreme
heat or cold
R injure themselves or have an accident with
vehicle equipment that may still be in
operation even after the SmartKey has
been removed from the ignition, such as the
seat adjustment, steering wheel
adjustment or memory function.
If children open a door, they could cause
severe or even fatal injury to other persons; if
they get out of the vehicle, they could injure
themselves when doing so or be seriously or
even fatally injured by any passing traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and a child could be burned on these
parts. G
WARNING
Do not carry heavy or hard objects in the
passenger compartmentort runk unless they
are firmly secured in place. Unsecured or improperly positioned cargo
increases a child's risk of injury in the event
of
R
strong braking maneuvers
R sudden changes of direction
R an accident G
WARNING
Make sure the trunk lid is closed when the
engine is running and while driving. Among
other dangers, deadly carbon monoxide (CO)
gases may enter the vehicle interior resulting
in unconsciousness and death.
! The trunk lid swings upwards when
opened .Therefore, make sure that there is
sufficient clearance above the trunk lid.
To open the trunk lid completely, a minimum
clearance of 5.90 ft (1.80 m) above the
ground is necessary.
The trunk lid can be:
R opened and closed manually from outside
R opened automatically from outside
R locked separately
R unlocked with the mechanical key
R opened with the emergency release button Opening and closing manually
Opening You can only unlock the trunk lid when the
vehicle is stationary and the roof is fully
opened or closed.
X
Press the 0010button on the SmartKey. Trunk
77Opening/closing Z

Side windows
Important safety notes
G
WARNING
When opening or closing the door windows,
make sure that there is no danger of anyone
being harmed by the opening/closing
procedure.
The front door windows are equipped with
automatic operation and the anti-entrapment
feature. If in automatic mode a front door
window encounters an obstruction that
blocks its path, the anti-entrapment feature
will stop the door window and open it slightly.
The door windows operate differently when
the switch is pulled.S ee the "Problems with
door windows" section for more details.
The closing of the door windows can be
immediately halted by releasing the switch or,
if the switch was pulled past the resistance
point and released, by pressing or pulling the
respective switch.
If a door window encounters an obstruction
that blocks its path in a circumstance where
you are closing the windows by pressing and
holding 000Fbutton on the SmartKey or by
pressing and holding the lock button (vehicles
with KEYLESS-GO) on an outside door handle,
the anti-entrapment feature will not operate. Opening and closing the side
windows in the front
The switches for the fron tside windows are
located on the driver's door. There is also a
switch for the front-passenger side window
on the front-passenger door.
The switches on the driver's door take
precedence. 0002
Left
0003 Right
X Turn the SmartKey to position 1or 2in the
ignition lock.
i You can continue to operate the side
windows after you switch off the engine.
This function is available for up to five
minutes or until the driver's or front-
passenger door is opened.
X To open: press the corresponding switch.
X To close: pull the corresponding switch.
X Automatic operation: press or pull the
corresponding switch beyond the point of
resistance.
The side window opens or closes fully.
X To interrupt automatic operation: press
or pull the corresponding switch again. Opening and closing all side windows
Using the switch on the center console You can use the switch on the center console
to simultaneously open all the side windows,
or to close them one after the other.
X Open the cover on the lower section of the
center console.
The switch for all side windows is under the
cover. 80
Side windowsOpening/closing

X
Touch recessed sensor surface 0002on the
door handle until the side windows are fully
closed.
i Make sure you only touch recessed
sensor surface 0002.
X Make sure that all the side windows are
closed.
X To interrupt convenience closing:
release recessed sensor surface 0002on the
door handle. Resetting the side windows
You must reset each side window if a side
window can no longer be closed fully.
X Close all the doors.
X Turn the SmartKey to position 1or 2in the
ignition lock.
X Pull the corresponding switch on the door
control panel until the side window is
completely closed. (Y page 80)
X Hold the switch for an additional second.
If the side window opens again slightly:
X Immediately pull the corresponding switch
on the door control panel until the side
window is completely closed (Y page 80).
X Hold the switch for an additional second.
X If the corresponding side window remains
closed after the button has been released,
the side window has been reset correctly.
If this is not the case, repeat the steps
above again. Problems with the side windows
Problem: aside window cannot be closed
because it is blocked by objects, e.g.
leaves in the window guide.
X Remove the objects.
X Close the side window.
Problem :aside window cannot be closed
and you cannot see the cause. G
WARNING
Closing the side windows with increased force
or without the anti-entrapment feature could
lead to serious or even fatal injury. Make sure
that nobody can become trapped when
closing the side windows.
If a side window is obstructed during closing
and reopens again slightly:
X Immediately afte rthe window blocks, pull
the corresponding switch again until the
side window has closed.
The side window is closed with increased
force.
If a side window is obstructed again during
closing and reopens again slightly:
X Immediately after the window blocks, pull
the corresponding switch again until the
side window has closed.
The side window is closed without the anti-
entrapment feature. G
WARNING
Pulling and holding the switch to close the
door window immediately after it had been
blocked two times will cause the door window
to close without the anti-entrapment feature
for as long as you hold the switch. Roof
Important safety notes
For safety reasons, the roof can only be
opened or closed when the vehicle is
stationary. 82
RoofOpening/closing

Opening and closing
X
Close the trun kpartition (Y page 85).
X Close the trunk lid.
X Turn the SmartKey to position 2in the
ignition lock.
X Open the cover on the lower sectio nofthe
center console.
Roof switch 0002is located under the cover.
X To open: pull roof switch 0002until the roof
has been fully retracted into the trunk and
the Vario-Roof in Operation message
disappears from the multifunction display.
All of the side windows open.
X To close: press roof switch 0002until the roof
is fully closed and the Vario-Roof inOperation message disappears from the
multifunction display.
All of the side windows open.
X To close all side windows, pull the switch
under the cover on the center console
(Y page 80).
i If you operate the roof switch and the
Trunk partition Open message appears
in the multifunction display, the trunk
partition has not been closed correctly. Opening and closing with the
SmartKey
Important safety notes G
WARNING
Before operating the retractable hardtop
(vario-roof), make sure there is no danger of
anyone being injured by the moving parts
(retractable hardtop, roof frame, and trunk
lid).
Hands must never be placed near the roof
frame, upper windshield area, hardtop, shelf
behind roll bars, or trunk lid while the
retractable hardtop is being raised or
lowered. Serious personal injury may occur.
If potential danger exists, release the
retractable hardtop switch or the 0010or
000F button on the SmartKey. This
immediately interrupts the raising or lowering
procedure. You can then operate the
retractable hardtop switch or press the
0010 or000F button on the SmartKey to raise
or lower the retractable hardtop away from
the danger zone.
Opening and closing i
The SmartKey must be close to the
driver's door handle.
X Close the trunk partition (Y page 85).
X Close the trunk lid.
X Point the tip of the SmartKey at the driver's
door handle.
X To open: press and hold the 0010button
on the SmartKey until the roof is fully
opened.
The roof and the rear side windows open.
The front side windows close.
X To interrupt the opening procedure:
release the 0010button.
X To open the front side windows: press
and hold the 0010button on the SmartKey
again. 84
RoofOpening/closing

Adjusting the steering wheel
manually
0002
Release lever
0003 To adjust the steering wheel height
0023 To adjust the steering wheel position
(fore-and-aft adjustment)
X Fold release lever 0002down completely in
the direction of the arrow.
The steering column is unlocked.
X Adjus tthe steering wheel to the desired
position.
X Push release lever 0002up completely.
The steering column is locked.
X Check if the steering column is locked.
When doing so, try to push the steering
wheel up or down or try to move it in the
fore-and-aft direction. Adjusting the steering wheel
electrically
0002
To adjust the steering wheel height
0003 To adjust the steering wheel position
(fore-and-aft adjustment)
i Related topics:
R EASY-ENTRY/EXIT feature
(Y page 97)
R Storing settings (Y page 100) EASY-ENTRY/EXIT feature
Important safety notes The EASY-ENTRY/EXIT feature makes getting
in and out of your vehicle easier.
You can activate and deactivate the EASY-
ENTRY/EXIT feature in the on-board
computer (Y page 194). G
WARNING
You must make sure no one can become
trapped or injured by the moving steering
wheel when the easy-entry/exit feature is
activated.
To stop steering wheel movement, move
steering wheel adjustment stalk or press the
memory position switch.
Do not leave children unattended in the
vehicle, or with access to an unlocked vehicle.
Children could open the driver's door and
unintentionally activate the easy-entry/exit
feature, which could result in an accident
and/or serious personal injury. Steering wheel
97Seats, steering wheel and mirrors Z