2008 MERCEDES-BENZ SL55AMG lock

401 Practical hints
Where will I find ...?
1Spare wheel
2Electric air pump
3Vehicle tool kit
4Storage well casing
Take spare wheel 1 out of the trunk,
see “Removing the spare wheel”
(
page 401), to access jack 5 and
wheel wrench 6.5Jack
6Wheel wrench
Removing the spare wheel
Open the trunk (page 114).
Lift up the trunk floor cover.
Remove storage well casing that con-
tains the vehicle tool kit and the elec-
tric air pump.1Spare wheel
2Tensioning strap (vehicles with
19" spare wheel only)
3Retaining screw
4Storage well casing base
Remove storage well casing base 4.
Remove retaining screw 3 by turning
it counterclockwise.
Remove spare wheel 1.

403 Practical hints
Locking/unlocking in an emergency
Locking/unlocking in an emergency
Unlocking the vehicle
If you cannot unlock the vehicle using the
SmartKey or KEYLESS-GO*, unlock the
driver’s door and the trunk using the
mechanical key.
1Mechanical key locking tab
2Mechanical key
Move locking tab 1 direction of arrow
and slide the mechanical key 2 out of
the housing.Unlocking the driver’s door
Insert mechanical key 2 into the
driver’s door lock until it stops.
Turn mechanical key 2 counterclock-
wise to position 1.
The driver’s door is unlocked. You can
now open the driver’s door.
iUnlocking the vehicle with the mechanical
key and opening the driver’s door or the trunk
will trigger the anti-theft alarm system
(
page 98).
To cancel the alarm, insert the SmartKey or the
SmartKey with KEYLESS-GO* in the starter
switch.
1Unlocking
2Mechanical key

404 Practical hints
Locking/unlocking in an emergency
Unlocking the trunk
A minimum height clearance of 6.2 ft
(1.89 m) is required to open the trunk lid.
Insert mechanical key 3 into the trunk
lid lock until it stops.
Turn mechanical key 3 counterclock-
wise to position 1.
The trunk is unlocked
Pull handle 2 and lift lid.
Turn mechanical key 3 back and
remove it from the trunk lid lock.
Unlocking the glove box
Lockable storage areas in the passenger
compartment include:

the glove box

the storage compartment under the
armrest

the rear storage compartments
If these cannot be unlocked by means of
the SmartKey or the SmartKey with
KEYLESS-GO*, use the mechanical key to
unlock the glove box.
Slide mechanical key 2 out of
SmartKey housing (
page 403).
Insert mechanical key 2 into the glove
box lock and turn it counterclockwise
to position1.
You can now open the glove box.
1Unlocking
2Handle
3Mechanical key
iTo unlock the remaining storage compart-
ments, the cause for the malfunction of the
SmartKey or the SmartKey with KEYLESS-GO*
must be determined and corrected, see
(
page 105) and (page 109).
1Separately unlocking the glove box
2Mechanical key

405 Practical hints
Locking/unlocking in an emergency
Locking the vehicle
If you cannot lock the vehicle with the
SmartKey, lock it with the mechanical key
as follows:
Close the passenger door and the
trunk.
Press the central locking switch in the
center console (
page 122).
Check whether the locking knob on the
passenger door has moved down.
If necessary push it down manually.
Remove the mechanical key from the
SmartKey (
page 403).
Check whether the trunk is locked.
If necessary, lock the trunk with the
mechanical key (
page 120).
Except for the driver’s door, the vehicle
should now be locked.
Insert mechanical key 2 into the
driver’s door lock until it stops.
Turn mechanical key 2 clockwise to
position 1.
The driver’s door is locked.
iUnlocking the glove box with the mechanical
key will trigger the anti-theft alarm system. To
cancel the alarm, do one of the following:

Press button Œ or ‹on the
SmartKey.

Insert the SmartKey in the starter switch.

Press the KEYLESS-GO* start/stop button
(
page 41).

Grasp an outside door handle (vehicles with
KEYLESS-GO* only).
1Locking
2Mechanical key
iThis procedure does not arm the anti-theft
alarm system, nor does it lock the fuel filler flap
and the storage compartments.
The storage compartments can be locked
separately (
page 240).

406 Practical hints
Locking/unlocking in an emergency
Lowering the load assist manually
If the load assist feature does not fully
lower the retractable hardtop into the
trunk compartment and you are unable to
close the trunk lid, follow the instructions
below.
1Hex-socket wrench
2Locking screw
Remove the trunk floor from the trunk.
Lift up the lid located at the lower left
side of the trunk.
Have a second person lift and hold the
retracted hardtop.
Using hex-socket wrench 1 provided
in the vehicle tool kit, carefully turn the
locking screw 2 approximately one
quarter of a turn.
Hook luggage cover into holders
(
page 210).
Let go of the hardtop.
It should gradually lower into the trunk.
When top is completely lowered,
return locking screw 2 to its original
position.
Close the lid.
Replace the trunk floor.
Contact an authorized Mercedes-Benz
Center as soon as possible.
!Do not overtighten the screw.

407 Practical hints
Replacing SmartKey batteries
Replacing SmartKey batteries
If the batteries in the SmartKey or the
SmartKey with KEYLESS-GO* are
discharged, the vehicle can no longer be
locked or unlocked. It is recommended
to have the batteries replaced at an
authorized 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.Remove the mechanical key from the
SmartKey or SmartKey with
KEYLESS-GO* (
page 403).
1Mechanical key
2Battery compartment
Insert mechanical key 1 into opening.
Press mechanical key 1 in direction of
arrow.
The battery compartment is unlatched.
Pull battery compartment 2 out of the
housing.
Warning!G
Batteries contain poisonous and corrosive
substances. Therefore keep the batteries
out of reach of children.
If a battery is swallowed, seek medical help
immediately.
Warning!G
SmartKey batteries contain Perchlorate
material, which may require special handling
and regard for the environment. Check with
your local government’s disposal guidelines.
California residents, see
http://www.dtsc.ca.gov/HazardousWaste
/Perchlorate/index.cfm.
iWhen inserting batteries, make sure they
are clean and free of lint.
iWhen replacing batteries, always replace
both batteries.
The required replacement batteries (Lithium,
type CR 2025 or equivalent) are available at any
authorized Mercedes-Benz Center.


408 Practical hints
Replacing SmartKey batteries
3Batteries
4Contact spring
Pull out batteries3.
Using a lint-free cloth, insert new
batteries 3 under contact springs 4
with the positive terminal (+) side
facing up.
Return battery compartment 2 into
housing until it locks into place.
Slide mechanical key 1 back into
SmartKey or SmartKey with
KEYLESS-GO*.
Check the operation of the SmartKey
or SmartKey with KEYLESS-GO* as well
as the KEYLESS-GO* function.


412 Practical hints
Replacing bulbs
4High beam bulbs
5Locking mechanism
6Parking and standing lampsFront turn signal bulb
Turn bulb socket 1 (page 411)
counterclockwise and pull it out.
Push the bulb into socket 1, turn
socket 1 counterclockwise and
remove it.
Insert the new bulb in bulb socket 1,
push and turn bulb socket 1 clock-
wise.
Reinsert bulb socket 1 in lamp hous-
ing and turn bulb socket 1 clockwise.High beam/high beam flasher bulbs
Press ends of headlamp cover tab
together and remove high beam head-
lamp cover 2 (
page 411).
Pull the electrical connector off.
Turn locking mechanism 5 counter-
clockwise and take out the bulb.
Insert the new bulb so that the base
locates in the recess on the holder.
Turn locking mechanism 5 clockwise.
Plug the connector onto the bulb.
Align high beam headlamp cover 2
and click it into place.Warning!G
Do not remove the cover for the Xenon or
Bi-Xenon* headlamp. Because of high
voltage in Xenon and Bi-Xenon* lamps, it is
dangerous to replace the bulb or repair the
lamp and its components. We recommend
that you have such work done by a qualified
technician.