2008 MERCEDES-BENZ SL55AMG lock

414 Practical hints
Replacing bulbs
Replacing bulbs for rear lamps
Before you start to replace a bulb for a rear
lamp, do the following first:
Turn the exterior lamp switch to
position M (
page 131).
Open the trunk (page 114).
Tail lamp unit
1Backup lamp
2Driver’s side: Rear fog lamp
Passenger’s side: Substitute lamp
3Turn signal lamp
Fold the trim to the side and remove it.
Turn the bulb socket counterclockwise
and pull it out.
Gently push the bulb into the socket,
turn it counterclockwise and remove it.
Insert the new bulb and reinstall the
bulb socket.
The bulb socket should audibly click
into place.
Reinstall the trim.License plate lamp
1Screws
Loosen both screws 1.
Remove the license plate lamp.
Replace the bulb.
Reinstall the license plate lamp.
Retighten screws 1.

418 Practical hints
Flat tire
Preparing the vehicle
Prepare the vehicle as described
(
page 417).
Turn spare wheel bracket counter-
clockwise to loosen.
Take the spare wheel out of the trunk
(
page 401).
Removing tensioning straps
(vehicles with 19" spare wheel only)
A 19" spare wheel has two tensioning
straps on it that must both be removed be-
fore mounting the spare wheel.1Buckle
2Clip
Press on both clips 2 simultaneously
to release buckle 1.Lifting the vehicle
Prevent the vehicle from rolling away
by blocking wheels with wheel chocks
(not included) or other sizeable
objects.
When changing wheel on a level
surface:
Place one wheel chock or other
sizeable object in front of and
another wheel chock or sizeable
object behind the wheel that is
diagonally opposite to the wheel
being changed.
Always try lifting the vehicle using the
jack on a level surface. However,
should circumstances require you to do
so on a hill, place a wheel chock or
other sizeable object and the other
wheel chock or sizeable object as
follows:
Place wheel chocks or other size-
able objects on the downhill side
blocking both wheels of the axle not
being worked on.
iThe tensioning straps are shown in red for
illustration purposes. The tensioning straps on
the spare wheel of your vehicle are black.iKeep the tensioning straps in a safe place.
You will need them to store the spare wheel in
the trunk after use (
page 402).

419 Practical hints
Flat tire
Take the vehicle tool kit and the jack
out of the storage compartment under
the trunk floor (
page 400).
On wheel to be changed, loosen but do
not yet remove the wheel bolts
(approximately one full turn with
wrench).
The jack support tubes are located behind
the front wheel housings and in front of the
rear wheel housings.
Warning!G
The jack is designed exclusively for jacking
up the vehicle at the jack tubes built into
both sides of the vehicle. To help avoid
personal injury, use the jack only to lift the
vehicle during a wheel change. Never get
beneath the vehicle while it is supported by
the jack. Keep hands and feet away from the
area under the lifted vehicle. Always firmly
set parking brake and block wheels before
raising vehicle with jack.
Do not disengage parking brake while the
vehicle is raised. Be certain that the jack is
always vertical (plumb line) when in use,
especially on hills. Always try to use the jack
on level surface. Be sure that the jack arm is
fully inserted in the jack tube. Always lower
the vehicle onto sufficient capacity jack-
stands before working under the vehicle.
Warning!G
When turning the wheel wrench to loosen
the wheel bolts, make sure you position
hands on the wrench in such a way that you
avoid injury to yourself, such as scraping
your hands against the wheel. Make sure
turning the wheel wrench will not scratch or
damage the wheel rim.


420 Practical hints
Flat tire
1Jack support tube cover (except
SL 55 AMG, SL 65 AMG and vehicles
with Sport Package*)
Open cover1 by pressing at point
indicated by arrow.
Remove cover1, taking care not to
damage the locking tabs.2Jack support tube cover (SL 55 AMG,
SL 65 AMG and vehicles with
Sport Package* only)
Insert a flat blade screwdriver in the
opening of cover2 and pry it out.
Remove cover2, taking care not to
damage the locking tabs.3Crank
4Jack arm
5Jack support tube hole
Insert jack arm4 fully into tube
hole5 up to the stop.
Warning!G
Insert the jack arm fully into the jack
support tube hole up to the stop. Otherwise
the vehicle may fall from the jack and cause
personal injury or damage to the vehicle.


421 Practical hints
Flat tire
Keeping jack in this position, turn
crank3 clockwise until the jack base
meets the ground. Make sure the jack
is vertical (plumb line).
Continue to turn the crank until the tire
is a maximum of 1.2 in (3 cm) from the
ground.Removing the wheel
1Alignment bolt
Unscrew upper-most wheel bolt and
remove.
Replace this wheel bolt with alignment
bolt1 supplied in the tool kit.
Remove the remaining bolts.
Remove the wheel.Mounting the new wheel
Clean contact surfaces of wheel and
wheel hub.
Guide the spare wheel onto the align-
ment bolt and push it on.
Insert wheel bolts and tighten them
slightly.
!Do not place wheel bolts in sand or dirt. This
could result in damage to the bolt and wheel hub
threads.
Warning!G
Inflate spare wheel tire only after the wheel
is properly mounted.
Inflate the spare wheel tire using the
electric pump (
page 422) before lowering
the vehicle.

424 Practical hints
Flat tire
Detach the electric air pump.
Stow the electrical plug and the air
hose behind the flap and place the air
pump back in the trunk.
Lowering the vehicle
Lower vehicle by turning crank coun-
terclockwise until the full weight of the
vehicle is resting on the ground.
Pull the jack out of the jack support
tube.1 - 5 Wheel bolts
Tighten the five wheel bolts evenly,
following the diagonal sequence
illustrated (1 to 5), until all bolts
are tight. Observe a tightening torque
of 96 lb-ft (130 Nm).
Warning!G
Follow recommend inflation pressures.
Do not overinflate tires. Overinflating tires
can result in sudden deflation (blowout) be-
cause they are more likely to become punc-
tured or damaged by road debris, potholes,
etc.
Do not underinflate tires. Underinflated tires
wear unevenly, adversely affect handling
and fuel economy, and are more likely to fail
from being overheated.
Do not overload the tires by exceeding the
specified load limit as indicated on the Tire
and Loading Information placard on the
driver’s door B-pillar. Overloading the tires
can overheat them, possibly causing a
blowout. Overloading the tires can also
result in handling or steering problems, or
brake failure.
iThe flat tire may be transported in the trunk
when the retractable hardtop is raised. If avail-
able, use a protective sheet on the spare wheel.
Vehicles with TPMS or Advanced TPMS*:
Do not activate the tire inflation pressure moni-
tor until a full size wheel/tire with functioning
sensor has been placed back into service on the
vehicle.
Warning!G
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque of
96 lb-ft (130 Nm).


425 Practical hints
Flat tire
Before storing the jack in the trunk,
crank back to storage position and fold
in the arm.Replacing jack support tube cover
Slide tongue of cover under the upper
edge of the tube opening.
Applying even pressure, press cover
until it snaps into place.
Be careful not to damage the locking
tabs or clamp the plastic retaining
strap.
MOExtended system*
The MOExtended system allows you to
continue driving your vehicle even if there
is a total loss of pressure in one or more
tires.
You may only use the MOExtended system
in conjunction with the Run Flat Indicator*
(Canada vehicles) (
page 303), TPMS
(U.S. vehicles) (
page 305), or Advanced
TPMS* (Canada vehicles) (
page 308).
Warning!G
When turning the wheel wrench to tighten
the wheel bolts, make sure you position
hands on the wrench in such a way that you
avoid injury to yourself, such as scraping
your hands against the wheel. Make sure
turning the wheel wrench will not scratch or
damage the wheel rim.
iFor information on storing the spare wheel
back into the trunk, see “Storing the spare wheel
after use” (
page 402).
!The maximum distance in emergency
mode depends on the vehicle’s load. It is
30 miles (50 km) if the vehicle is partially
loaded and 18 miles (30 km) if the vehicle is
fully loaded.
The point at which the maximum driving distance
begins in emergency mode is when the warning
message appears in the multifunction display
indicating that there is a loss of tire inflation
pressure.
Do not exceed the maximum speed of
50 mph (80 km/h).

429 Practical hints
Batteries
Disconnecting the batteries
Apply the parking brake (page 63).
Make sure the gear selector lever is set
to position P (
page 172).
Close the retractable hardtop
(
page 204).
Turn off all electrical consumers.
Turn off the engine (page 64).
Remove the SmartKey from the starter
switch.
Vehicles with KEYLESS-GO*: Open
the driver’s door.
Open the trunk.
Read and observe safety instructions
and precautions (
page 290).
Open the luggage cover in the trunk
(
page 211).
Remove the trunk floor.
The battery for electrical consumers is
located in the right hand area of the
trunk (
page 400).
Use the 10 mm open-end wrench from
the vehicle tool kit to disconnect the
negative lead from negative
terminal5 of the consumer battery
(
page 427).
Warning!G
With a disconnected battery

you will no longer be able to turn the
SmartKey in the starter switch and
pressing the KEYLESS-GO* start/stop
button on the gear selector lever will
have no effect

the gear selector lever will remain
locked in positionP
!Always disconnect the batteries in the order
described below, even if you only want to charge
the starter battery, for example. Otherwise the
vehicle’s electronics can be damaged.