2012 MERCEDES-BENZ SLK55AMG battery

If you pull on the handle of the trunk lid, only
the trunk of the vehicle is unlocked.
Changing the settings of the locking
system
You can change the settings of the locking
system so that when unlocking, only the
driver's door, the lockabl estowage
compartments in the vehicle interior and the
fuel filler flap are unlocked. This is useful if
you frequently travel on your own.
X To change the setting: press and hold
down the 0010and000F buttons
simultaneously for approximately
si xs econds until the battery chec klamp
flashes twice ( Ypage 71).
i If the setting of the locking system is
changed within the signal range of the
vehicle, pressing the 000For0010 button
locks or unlocks the vehicle.
The SmartKey now functions as follows:
X To unlock the driver's door: press the
0010 button once.
X To unlock centrally: press the0010
butto ntwice.
X To lock centrally: press the000Fbutton.
The KEYLESS-GO function is changed as
follows:
X To unlock the driver's door: touch the
inner surface of the door handle on the
driver's door.
X To unlock centrally: touch the inner
surface of the front-passenger door handle.
X To lock centrally: touch the outersensor
surface on one of the door handles. Restoring the factory settings
X Press the 0010and000F buttons
simultaneously for approximately
six seconds until the battery chec klamp
flashes twice. Mechanical key
General notes If the vehicle can no longer be locked or
unlocked with the SmartKey, use the
mechanical key.
If you use the mechanical key to unlock and
open the driver's door or the trunk lid, the
anti-thef talarm system will be triggered
(Y page 65).
There are several ways to tur noff the alarm:
X To turn the alarm off with the
SmartKey: press the0010or000F button
on the SmartKey.
or
X Insert the SmartKey into the ignition lock.
or
X To deactivate the alarm with KEYLESS-
GO: press the Start/Stop button in the
ignition lock. The SmartKey must be in the
vehicle.
or
X Lock or unlock the vehicle using KEYLESS-
GO. The SmartKey must be outside the
vehicle.
If you unlock the vehicle using the mechanical
key, the fuel filler fla pwill not be unlocked
automatically.
X To unlock the fuel filler flap: insert the
SmartKey in the ignition lock.
Removing the mechanical key 70
SmartKeyOpening/closing

X
Push release catch 0002in the direction of
the arrow and at the same time, remove
mechanical key 0003from the SmartKey. SmartKey battery
Important safety notes Have the batteries changed at a qualified
specialist workshop.
G
WARNING
Batteries contain toxic substances.
Swallowing batteries can lead to serious
health issues or death.
Keep batteries out of the reach of children.
Seek medical attention immediately if a
battery is swallowed. G
WARNING
The SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. Observe
government disposal guidelines. California
residents, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/
index.cfm .
Checking the battery X
Press the 000For0010 button.
The battery is working properly if battery
check lamp 0002lights up briefly
If battery check lamp 0002does not light up
briefly during the test, the battery is
discharged. X
Changing the battery (Y page 71)
i You can obtain the battery at a qualified
specialist workshop.
i If the SmartKey battery is checked within
the signal reception range of the vehicle,
pressing the 000For0010 button locks or
unlocks the vehicle.
Replacing the battery You require a CR 2025 3 V cell battery.
X
Take the mechanical key out of the
SmartKey (Y page 70). X
Press mechanical key 0003into the opening
in the SmartKey in the direction of the
arrow until battery tray cover 0002opens.
When doing so, do not hold cover 0002shut.
X Remove battery tray cover 0002. X
Repeatedly tap the SmartKey against your
palm until battery 0023falls out.
X Inser tthe new battery with the positive
terminal facing upwards. Use a lint-free
cloth to do so. SmartKey
71Opening/closing Z

X
Make sure that the surface of the battery is
free from lint, grease and all other forms of
contamination.
X Insert the front tabs of battery tray
cover 0002and then press to close it.
X Insert the mechanical key into the
SmartKey.
X Check the function of all SmartKey buttons
on the vehicle. 72
SmartKeyOpening/closing

Problems with the SmartKey
Problem Possible causes/consequences and
0001 Solutions
You cannot lock or
unlock the vehicle
using the SmartKey. The SmartKey battery is discharged or nearly discharged.
X
Try again to lock/unlock the vehicle using the remote control
function of the SmartKey. Point the tip of the SmartKey at the
driver's door handle from close range and press the 0010/
000F button.
If this does not work:
X Check the SmartKey battery (Y page 71) and replace it if
necessary (Y page 71).
X Lock (Y page 76) or unlock (Y page 76) the vehicle using
the mechanical key. The SmartKey is faulty.
X
Lock (Y page 76) or unlock (Y page 76) the vehicle using
the mechanical key.
X Have the SmartKey checked at a qualified specialist workshop. You can no longer lock
or unlock the vehicle
using KEYLESS-GO. There is interference from a powerful source of radio waves.
X Lock/unlock the vehicle using the remote control function of
the SmartKey. Point the tip of the SmartKey at the driver's door
handle from close range and press the 0010/000Fbutton. There is a malfunction with KEYLESS-GO.
X Lock/unlock the vehicle using the remote control function of
the SmartKey. Point the tip of the SmartKey at the driver's door
handle from close range and press the 0010/000Fbutton.
X Have KEYLESS-GO checked at a qualified specialist workshop.
If this does not work:
X Check the SmartKey battery (Y page 71) and replace it if
necessary (Y page 71).
X Lock (Y page 76) or unlock (Y page 76) the vehicle using
the mechanical key. You have lost a
SmartKey. X
Have the SmartKey deactivated at a qualified specialist
workshop.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. You have lost the
mechanical key. X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. SmartKey
73Opening/closing Z

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
Insert the mechanical key into the trunk lid
lock as far as the stop.
X Turn the mechanical key clockwise from
position 0005to position 0006.
X Remove the mechanical key.
X Insert the mechanical key into the
SmartKey. Unlocking the trunk (mechanical key)
! The trunk lid swings upwards when
opened. Therefore, make sure that there is
sufficient clearance above the trunk lid.
If the trunk cannot be unlocked with the
SmartKey or KEYLESS-GO, use the
mechanical key.
If you use the mechanical key to unlock and
open the trunk lid, the anti-theft alarm system
will be triggered (Y page 65).
X Take the mechanical key out of the
SmartKey (Y page 70).
X Insert the mechanical key into the trunk lid
lock as far as the stop. X
Turn the mechanical key counter-clockwise
from position 0005as far as it will go to
position 0006and pull the trunk lid handle.
The trunk is unlocked.
X Turn the mechanical key back to position
0005 and remove it.
X Insert the mechanical key into the
SmartKey. Trunk emergency release
You can open the trunk lid from inside the
vehicle with the emergency release button. X
Briefly press emergency release
button 0002.
The trunk lid unlocks and opens.
The trunk lid can be unlocked and opened
with the trunk lid emergency release when
the vehicle is stationary or while driving.
Trunk lid emergency release light:
R emergency release button 0002flashes for
30 minutes after the trunk lid is opened
R emergency release button 0002flashes for
60 minutes after the trunk lid is closed.
The trunk lid emergency release does not
open the trunk lid if the battery is
disconnected or discharged. Trunk
79Opening/closing Z

Adjusting the head restraints
X
To raise/lower: push the head restraint
upwards or pull it down into the desired
position. Adjusting the four-way lumbar
support
You can adjust the contour of the seat
backrests individually to provide optimum
support for your back. 0002
To raise the backrest contour
0003 To soften the backrest contour
0023 To lower the backrest contour
0022 To harden the backrest contour Switching the sea
theating on/off
Switching on/off G
WARNING
Repeatedly setting the seat heating to level
3 may result in excessiv eseat temperatures. The health of passengers that have limited
temperature sensitivity or a limited ability to
react to excessively high temperatures may
be affected or they may even suffer burn-like
injuries. Therefore, do not use seat heating
level
3repeatedly.
The three red indicator lamps in the button
indicate the heating level you have selected.
i If the battery voltage is too low, the seat
heating may switch off. Driver's and front-passenger seat
The system automatically switches down
from level
3to level 2after approximately five
minutes.
The system automatically switches down
from level 2to level 1after approximately ten
minutes.
The system automatically switches off
approximately 20 minutes after it is set to
level 1.
X Make sure that the SmartKey is in position
1 or 2in the ignition lock.
X To switch on: press button0002repeatedly
until the desired heating level is set.
X To switch off: press button0002repeatedly
until all the indicator lamps go out. Seats
95Seats, steering wheel and mirrors Z