2006 MERCEDES-BENZ SLK280 key battery

95 Controls in detail
Locking and unlocking
Global locking
Press button‹.
With the trunk and all doors closed, all
turn signal lamps flash three times. The
locking knobs on the doors move
down.
The anti-theft alarm system is armed
now (
page 87).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 compartment under the
armrest, the glove box, and the fuel filler
flap.

Press and hold buttonsŒand‹
simultaneously for about 6 seconds.
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 on the driver’s door
move up. The anti-theft alarm system is
disarmed (
page 87).Global unlocking

Press buttonΠtwice.
All turn signal lamps flash once.
The locking knobs on the doors move
up. The anti-theft alarm system is dis-
armed (
page 87).
Global locking

Press button‹.
With the trunk and all doors closed, all
turn signal lamps flash three times. The
locking knobs on the doors move
down.
The anti-theft alarm system is armed
now (
page 87).
iIf the turn signal lamps do not flash
three times, one of the following ele-
ments may not be properly closed:

a door


the trunk lid


the fuel filler flap


the glove box


the storage compartment under the
armrest
Close the respective element and lock
the vehicle again.

96 Controls in detailLocking and unlockingRestoring to factory setting
Press and hold buttonsŒand‹
simultaneously for about 6 seconds.
Battery check lamp5 flashes twice.
The SmartKey is set to the factory set-
ting again.Unlocking the trunk lid
You can unlock and open the trunk lid sep-
arately.

Press and hold buttonŠ on the
SmartKey until the trunk lid unlocks.
For opening the trunk, see “Opening
the trunk” (
page 98).
!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 and replace them if nec-
essary (
page 398).


Use the mechanical key to lock/un-
lock the driver’s door (
page 394).


Use the mechanical key to lock/un-
lock the trunk lid as required
(page 395).


Have the vehicle battery and the
battery connections checked
(page 421).
If the SmartKey is malfunctioning, con-
tact an authorized Mercedes-Benz
Center.
iThe trunk lid can only be opened when
the vehicle is not in motion and the re-
tractable hardtop is fully opened or
closed.

97 Controls in detail
Locking and unlocking
Checking the batteries
Press button‹orŒ.
Battery check lamp5 comes on brief-
ly to indicate that the SmartKey batter-
ies are in order.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.
Your authorized Mercedes-Benz Center
will be glad to supply you with a replace-
ment.
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 of the desired
door.
If the door was locked, locking knob2
will move up.
iIf battery check lamp5 does not
come on briefly during check, then 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 sig-
nal range of the vehicle, pressing
button‹orŒ will lock or un-
lock the vehicle accordingly.


98 Controls in detailLocking and unlocking
Opening the trunk
A minimum height clearance of 5.78 ft
(1.76 m) is required to open the trunk lid.
The handle is located above the rear
license plate recess.
Pull on the handle.

Lift the trunk lid.
iIf the vehicle has previously been cen-
trally locked with the SmartKey, open-
ing a door from the inside will trigger
the anti-theft alarm system.
To cancel the alarm, do one of the fol-
lowing:

Press buttonŒor‹ on the
SmartKey.


Insert the SmartKey in the starter
switch.
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.!The side windows will not open or close
if the battery is discharged or the win-
dows are covered with ice. As a result,
you may no longer be able to properly
close the door. Do not attempt to force
the door shut. Doing so may damage
the door or the side window. Correct
the condition that prevents the
windows from operating before
attempting to close the door.
!When the trunk lid is lifted slightly, it
swings open upwards automatically.
Always make sure there is sufficient
overhead clearance.


117 Controls in detail
Lighting
Hazard warning flasher
The hazard warning flasher can be
switched on at all times, even with the
SmartKey removed from the starter
switch.
The hazard warning flasher switches on au-
tomatically when an air bag deploys.
The hazard warning flasher switch is locat-
ed on the upper part of the center console.
1Hazard warning flasher switchSwitching 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/off
iWith the hazard warning flasher acti-
vated and the combination switch set
for either left or right turn, only the re-
spective turn signals will operate when
the SmartKey is in the starter switch
position1or2.iIf the hazard warning flasher has been
activated automatically, press hazard
warning flasher switch1 once to
switch it off.
iLeaving an interior light switch in the
ON position for extended periods of
time with the engine turned off could
result in a discharged battery.

361 Practical hints
What to do if …
Where will I find...?
Unlocking/locking in an emergency
Opening/closing in an emergency
Replacing SmartKey batteries
Replacing bulbs
Replacing wiper blades
Flat tire
Battery
Jump starting
Towing the vehicle
Fuses

398 Practical hintsReplacing SmartKey batteriesIf the batteries in the SmartKey are dis-
charged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an autho-
rized Mercedes-Benz Center.Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.Warning!
G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
iWhen inserting the batteries, make
sure they are clean and free of lint.
When replacing batteries, always re-
place both batteries.
The required replacement batteries are
available at any Mercedes-Benz
Center.

399 Practical hints
Replacing SmartKey batteries
SmartKey
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove mechanical key1
(page 394).
1Mechanical key
2Slide
3Battery compartment

Insert mechanical key1 in direction
of arrow in side opening.

Using mechanical key1, push gray
slide2 to unlatch battery
compartment3.

Pull battery compartment3 out of the
housing in direction of arrow.

Remove the discharged batteries in di-
rection of arrow.
4Battery
5Contact spring

Using a lint-free cloth, insert new
batteries4 under contact spring5
with the positive terminal (+) facing up.

Return battery compartment2 into
the housing until it locks into place.

Slide mechanical key1 back into the
SmartKey.

Check the operation of the SmartKey.