XTo access jack and wheel wrench:
Remove storage well casing =.
XRemove the spare wheel (Y page 225).AJackBWheel wrench
Jack
GWarning!
Only use the jack supplied with your vehicle
to lift the vehicle briefly for wheel changes. If
you use the jack for any other purpose, you or
others could be injured, as the jack is
designed only for the purpose of changing a
wheel.
When using the jack, observe the safety notes
in the “Mounting the spare wheel” section and
the notes on the jack.
Spare wheel
GObserve Safety notes, see page 276.
The spare wheel is located in the space
underneath the trunk floor.
XRemoving: Open the trunk (Y page 73).XLift the trunk floor.XRemove the storage well casing
(Y page 224).:Spare wheel;Tensioning strap18=Retaining screw?Storage well casing baseXRemove storage well casing base ?.XRemove retaining screw = by turning it
counterclockwise.
XRemove spare wheel :.
For information on mounting the spare wheel,
see “Flat tire” (Y page 276).
Storing the spare wheel after use
If you wish to store the spare wheel after use,
carry out the following steps. Otherwise, the
spare wheel may not fit into the spare wheel
well.
! Make sure the spare wheel is dry before
storing it.
XUnscrew the valve cap from the valve of the
collapsible tire.
XUnscrew the valve insert from the valve
using the valve extractor integrated in the
valve cap.
XAllow the air to escape.
iIt may take a few minutes for the
collapsible tire to deflate completely.
XUse the valve extractor integrated in the
valve cap to screw the valve insert back into
the valve.
18Vehicles with 19" spare wheel only.Where will I find ...?225Practical hints230_AKB; 6; 22, en-USd2ureepe,Version: 2.11.8.12009-07-28T18:49:58+02:00 - Seite 225Z
VehicleDisplay messagesPossible causes/consequences and M SolutionsNThe trunk is open.XClose the trunk ( Y page 75).LYou are driving with the hood open.XStop the vehicle in a safe location as soon as it is safe to
do so.XClose the hood ( Y page 181).
There is otherwise danger of an accident.
OYou are driving with the hood and the trunk open.XStop the vehicle in a safe location as soon as it is safe to
do so.XClose the hood ( Y page 181) or the trunk ( Y page 75).
There is otherwise danger of an accident.
CYou are driving with at least one door open.XClose all doors.CCheck
DoorsVehicles with KEYLESS-GO:
You are pressing the lock button on the door handle and at
least one door is open.XClose all doors.KRetract.
Roof Oper.
Please
Wait
See Oper.
ManualThe on-board voltage is too low.XRepeat the opening or closing procedure.XStart the engine.The hardtop drive system was shut down for safety reasons
after multiple, consecutive attempts to raise or lower the
hardtop.
After about 10 minutes you can open or close the retractable
hardtop.XSwitch on the ignition.XRepeat the opening or closing procedure.XIf the retractable hardtop still does not open or close
properly, have the hardtop system checked at an
authorized Mercedes-Benz Center.KRetractabl
e Roof
LoweringThe retractable hardtop is not completely opened or closed.
The roof hydraulics will start to lose pressure.XMake sure the retractable hardtop is completely opened or
closed ( Y page 155).Vehicle status messages in the multifunction display241Practical hints230_AKB; 6; 22, en-USd2ureepe,Version: 2.11.8.12009-07-28T18:49:58+02:00 - Seite 241Z
Display messagesPossible causes/consequences and M SolutionsKRetractabl
e Roof
Operation
Only At
StandstillYou have attempted to open the retractable hardtop while
driving.XStop the vehicle in a safe location and try to open the
hardtop again.KRetractabl
e Roof
Not
Opened/
Closed
CompletelyYou are driving with the retractable hardtop not properly
locked.XStop the vehicle in a safe location. Observe the traffic
situation around you.XPull or push on the retractable hardtop switch until the
retractable hardtop is completely open or closed
( Y page 155).XIf the retractable hardtop still does lock properly, have the
hardtop system checked at an authorized Mercedes-Benz
Center.JTrunk
Partition
OpenYou are trying to open or close the retractable hardtop even
though the luggage cover in the trunk is not closed and/or
properly engaged.XClose the luggage cover and engage it into the side holders
( Y page 158).+Key
Detected
In VehicleA SmartKey with KEYLESS-GO left in the vehicle was
recognized while trying to lock the vehicle from the outside.XTake the SmartKey out of the vehicle.+Remove KeyYou have forgotten to remove the SmartKey.XRemove the SmartKey from the starter switch.+Replace
KeyThe SmartKey is malfunctioning.XContact an authorized Mercedes-Benz Center.+Change
Key
BatteriesThe batteries in the SmartKey with KEYLESS-GO are
discharged.XReplace the batteries ( Y page 269).+Key Not
Detected
(message
appears in
red)The SmartKey with KEYLESS-GO is not detected while the
engine is running because the SmartKey is not in the vehicle.XStop the vehicle as soon as it is safe to do so.XEngage the parking brake.XSearch for the SmartKey.
The vehicle cannot be locked centrally nor can the engine
be started again after the engine is stopped.242Vehicle status messages in the multifunction displayPractical hints
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ProblemPossible causes/consequences and M Solutions45
The passenger front air
bag off indicator lamp
does not illuminate
and/or does not
remain illuminated with
the weight of a typical
12-month-old child in a
standard child restraint
or less on the
passenger seat.
The system is malfunctioning.XMake sure there is nothing between seat cushion and child seat
and check installation of the child seat.
XMake sure no objects applying supplemental weight onto the
seat are present.
XIf the passenger front air bag off indicator lamp remains out,
have the system checked as soon as possible at an authorized
Mercedes-Benz Center. Do not transport a child on the
passenger seat until the system has been repaired.
XRead and observe messages in the multifunction display and
follow corrective steps (Y page 226).
GWarning!
If the 45 indicator lamp does not
illuminate or remains out with the weight of a
typical 12-month-old child in a standard child
restraint or less on the passenger seat, do not
transport a child on the passenger seat until
the system has been repaired.
Unlocking/locking manually
Unlocking the vehicle
If you cannot unlock the vehicle with the
SmartKey or with KEYLESS-GO, unlock the
driver’s door and the trunk using the
mechanical key.
The anti-theft alarm system will trigger when
you
Runlock the driver’s door or the trunk with
the mechanical key
and
Ropen the driver’s door or the trunk
To cancel the alarm, insert the SmartKey into
the starter switch.
Removing the mechanical key
SmartKey
SmartKey with KEYLESS-GO
XMove locking tab : in the direction of
arrow.
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Unlocking the driver’s doorXInsert mechanical key ; into the driver’s
door lock.
XTurn mechanical key ; counterclockwise
to position 1 until the locking knob moves
up.
The driver’s door is unlocked.
XPull the door handle to open the driver’s
door.
XTurn mechanical key ; back and remove
it from the driver’s door lock.
Unlocking the trunk
A minimum height clearance of 6.2 ft (1.89 m)
is required to open the trunk lid.
XInsert mechanical key = into the trunk lid
lock.
XTurn mechanical key = counterclockwise
to position 2.
XPull handle : and lift the trunk lid.! When you open the trunk, the trunk lid
swings open upwards. Always make sure
there is sufficient overhead clearance.
XTurn mechanical key = back and remove
it from the trunk lid lock.
Unlocking the glove box
Lockable storage areas in the passenger
compartment include:
Rthe glove box
Rthe storage compartment under the
armrest
Rthe rear storage compartments
If these cannot be unlocked by means of the
SmartKey, use the mechanical key to unlock
the glove box.
iTo unlock the remaining storage
compartments, the cause for the
malfunction of the SmartKey must be
determined and corrected, see
(Y page 68).
XInsert mechanical key : into the glove box
lock.
XTurn mechanical key : counterclockwise
to position 2.
You can now open the glove box.
iUnlocking the glove box with the
mechanical key will trigger the anti-theft
alarm system.
To cancel the alarm, insert the SmartKey in
the starter switch.
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Locking the vehicle
If you cannot lock the vehicle with the
SmartKey or with KEYLESS-GO, lock it as
follows:
XOpen the driver’s door.XClose the passenger door and the trunk.XPress the central locking switch
(Y page 73).
XCheck to see whether the locking knob on
the passenger door has moved down.
XIf necessary, push it down manually.XExit the vehicle and close the driver’s door.XRemove the mechanical key from the
SmartKey (Y page 267).
XCheck whether the trunk is locked.XIf it is not locked, lock it with the
mechanical key (Y page 77).
Except for the driver’s door, the vehicle
should now be locked.
XInsert mechanical key ; into the driver’s
door lock.
XTurn mechanical key ; clockwise to
position 1.
The driver’s door is locked.
XTurn mechanical key ; back and remove
it from the driver’s door lock.
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 (Y page 161).
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.
XOpen the trunk (Y page 73).XRemove the trunk floor from the trunk.XHave a second person lift and hold the
retracted hardtop.
XTake the hex-socket wrench from the
vehicle tool kit (Y page 224).
XUsing hex-socket wrench :, carefully turn
locking screw ; approximately one
quarter of a turn counterclockwise.
XHook luggage cover into holders
(Y page 159).
XLet go of the hardtop.
It should gradually lower into the trunk.
XWhen hardtop is completely lowered,
return locking screw ; clockwise to its
original position.
! Do not overtighten the screw.
XReplace the trunk floor.XClose the trunk.XContact an authorized Mercedes-Benz
Center as soon as possible.
Replacing SmartKey batteries
If the batteries in the SmartKey are
discharged, the vehicle can no longer be
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XTurn bulb socket = clockwise until it
engages.
Driver’s side headlamp: Cable outlet ?
of bulb socket = must point towards the
lower right.
Passenger-side headlamp: Cable
outlet ? of bulb socket = must point
towards the lower left.
XPlace bulb socket ; back into the housing.XAlign housing cover : and turn it
clockwise until it engages.
Parking and standing lamp bulb
XTurn housing cover : counterclockwise
and remove it.
XPull out bulb socket ;.XPull the bulb out of bulb socket ;.XGently press the new bulb into bulb
socket ;.
XPlace bulb socket ; back into the housing.XAlign housing cover : and turn it
clockwise until it engages.
Corner-illuminating lamp bulbs
XTurn housing cover : counterclockwise
and remove it.
XTurn bulb socket A counterclockwise and
remove it.
XPull the bulb out of bulb socket A.XGently press the new bulb into bulb socket
A.
XInsert bulb socket A into the guide in the
headlamp.
XTurn bulb socket A clockwise until it
engages.
The handle of the bulb socket must be
vertical.
XAlign housing cover : and turn it
clockwise until it engages.Replacing bulbs for rear lamps
Before you start to replace a bulb for a rear
lamp, do the following:
XSwitch off the ignition.XTurn the exterior lamp switch to position
$.
XOpen the trunk.
Tail lamp unit
Opening the driver’s side trim panel
XTurn lock : counterclockwise by 90°.XRemove cover ;.
Opening the passenger-side trim panel
XMove lock : in direction of the arrow and
remove cover ;.
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XPress on both clips ; simultaneously to
release buckle :.
XStore the tensioning straps in a safe place.
You will need them to store the spare wheel
in the trunk after use (Y page 225).
Lifting the vehicle
GWarning!
When jacking up the vehicle, only use the jack
which has been specifically approved by
Mercedes-Benz for your vehicle.
The jack is designed exclusively for jacking up
the vehicle at the jack tubes built into both
sides of the vehicle. Make sure the jack arm
is fully inserted in the jack tube. The jack must
always be vertical when in use, especially on
inclines or declines.
The jack is intended only for lifting the vehicle
briefly for wheel changes. It is not suited for
performing maintenance work under 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 lower the vehicle onto sufficient
capacity jackstands before working under the
vehicle.
Always engage the parking brake firmly and
block the wheels with wheel chocks or other
sizeable objects before raising the vehicle
with the jack. Do not disengage the parking
brake while the vehicle is raised.
Make sure that the ground on which the
vehicle is standing and where you place the
jack is solid, level and not slippery. If
necessary, use a large underlay. On slippery
surfaces, such as tiled floors, you should use
a non-slip underlay, for example a rubber mat.
Do not use wooden blocks or similar objects
to support the jack. Otherwise the jack may
not be able to achieve its load-bearing
capacity if it is not at its full height.
Never start the engine when the vehicle is
raised.
Also observe the notes on the jack.
XPrevent the vehicle from rolling away by
blocking wheels with wheel chocks (not
included) or other sizeable objects.
When changing a wheel on a level surface:
XPlace a wheel chock or other sizeable
object in front of and another wheel chock
or other 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:
XPlace wheel chocks or other sizeable
objects on the downhill side in front of both
wheels on the side opposite to the side on
which the wheel is to be changed.
GWarning!
Only jack up the vehicle on level ground or on
slight inclines/declines. Otherwise, the
vehicle could fall off the jack and injure you or
others.
XOn the wheel to be changed, loosen but do
not yet remove the wheel bolts
(approximately one full turn with wheel
wrench :).
The jack support tubes are located directly
behind the front wheel housings and in front
of the rear wheel housings.
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