MERCEDES-BENZ S550 4MATIC 2008 W221 Owner's Manual

480 Controls in detail
Trunk
Vehicles with trunk opening/closing
system*
1Remote trunk opening/closing* switch
Press and hold switch1 until the
trunk is opened.
The indicator lamp in switch1 comes
on and remains lit until the trunk is
closed.
To interrupt the opening procedure:
Release switch1.Trunk opening-height restriction*
Vehicles with trunk opening/closing sys-
tem*:
The trunk lid opening height can be limited
when transporting goods on a roof rack
(e.g. presence of an optional MB sport lug-
gage container). When activated, the trunk
opens to approximately the height of the
roof edge.
Activate the limiting opening height of
trunk lid using the COMAND system
(
page 249).
Closing trunkClosing trunk from outside manually
1Handles
Lower trunk lid by pulling firmly on
handles1.
Close the trunk with hands placed flat
on the trunk lid.
The power closing assist automatically en-
sures that the trunk lid is pulled closed
completely (
page 342).
iDo not place the SmartKey in the open
trunk. You may lock yourself out.
iIf the vehicle was previously centrally
locked, the trunk will lock automatically after
closing it. All turn signal lamps flash three times
to confirm locking.
Vehicles with KEYLESS-GO*: To prevent a possi-
ble inadvertent lockout, the trunk will open auto-
matically if a SmartKey with KEYLESS-GO* is
recognized inside the vehicle or in the trunk. The vehicle is only locked when the turn signals
flash three times. If you are carrying a second
SmartKey with KEYLESS-GO* with you, you can
still lock the vehicle.

481 Controls in detail
Trunk
Closing trunk from outside
automatically*
In vehicles with trunk opening/closing sys-
tem* you can close the trunk separately
from the outside using the trunk closing
switch.
Warning!G
To prevent possible personal injury, always
keep hands and fingers away from the trunk
lid opening when closing the trunk. Be espe-
cially careful when small children are
around.
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. A child’s unsupervised ac-
cess to a vehicle could result in an accident
and/or serious personal injury.Warning!G
Monitor the closing procedure carefully to
make sure no one is in danger of being in-
jured. To prevent possible personal injury,
always keep hands and fingers away from
the trunk lid opening when closing the trunk.
Be especially careful when small children
are around. To stop the closing procedure,
do one of the following:

press button Š on the SmartKey or
SmartKey with KEYLESS-GO*

press the trunk opening/closing*
switch (on the driver’s door)

press the trunk closing switch

press the KEYLESS-GO* locking/clos-
ing switch

pull the trunk lid handle
Even with the SmartKey or SmartKey with
KEYLESS-GO* removed from the starter
switch or the SmartKey with KEYLESS-GO*
removed from the vehicle, the remote trunk
opening/closing* switch can be operated.
Therefore, do not leave children unattended
in the vehicle, or with access to an unlocked
vehicle. A child’s unsupervised access to a
vehicle could result in an accident and/or
serious personal injury.

482 Controls in detail
Trunk
Vehicles without KEYLESS-GO*
1Trunk closing switch
Vehicles with KEYLESS-GO*
1Trunk closing switch
Press trunk closing switch1 briefly.
The trunk closes.
Closing trunk and locking vehicle from
outside (vehicles with KEYLESS-GO*)
In vehicles with trunk opening/closing sys-
tem* and KEYLESS-GO*, you can close the
trunk and lock the vehicle simultaneously
from the outside using the KEYLESS-GO
locking/closing switch.1KEYLESS-GO locking/closing switch
Make sure you have the SmartKey with
KEYLESS-GO with you.
Press switch1 briefly.
With all doors closed:

The locking knobs in the doors
move down.

The trunk starts to close automati-
cally.

All turn signal lamps flash three
times to confirm locking once the
trunk has closed completely.
iIf the trunk lid comes into contact with an
object while closing (e.g. luggage that has been
piled too high) in the upper motion sequence, the
closing procedure is stopped and the trunk re-
opens slightly.

483 Controls in detail
Trunk

An acoustic signal sounds three
times (if equipped and feature acti-
vated).

The anti-theft alarm system is
armed.Closing trunk from inside
automatically*
In vehicles with trunk opening/closing sys-
tem* you can close the trunk from the in-
side using the remote trunk opening/
closing* switch.
1Remote trunk opening/closing* switch
(vehicles with trunk opening/closing
system*)
iIf the trunk lid comes into contact with an
object while closing (e.g. luggage that has been
piled too high) in the upper motion sequence, the
closing procedure is stopped and the trunk re-
opens slightly.
Warning!G
Maintain sight of trunk area while operating
door mounted switch. Monitor the closing
procedure carefully to make sure no one is
in danger of being injured.
To interrupt the closing procedure, release
the door mounted remote trunk open-
ing/closing* switch.
Even with the SmartKey or SmartKey with
KEYLESS-GO* removed from the starter
switch or the SmartKey with KEYLESS-GO*
removed from the vehicle, the remote trunk
opening/closing* switch can be operated.
Therefore, do not leave children unattended
i n t h e v e h i c l e , o r w i t h a c c e s s t o a n u n l o c k e d
vehicle. A child’s unsupervised access to a
vehicle could result in an accident and/or
serious personal injury.
iIf the trunk lid comes into contact with an
object while closing (e.g. luggage that has been
piled too high) in the upper motion sequence, the
closing procedure is stopped and the trunk re-
opens slightly.


484 Controls in detail
Trunk
Press and hold switch1 until the
trunk is closed.
The indicator lamp in the switch goes
out when the trunk is closed.
To interrupt the closing procedure:
Release switch1.
Trunk emergency release
With the emergency release button, the
trunk can be opened from inside the trunk.
1Emergency release button
Briefly press emergency release
button1.The trunk opens.
Illumination of the emergency release but-
ton:

The button will flash for 30 minutes af-
ter opening the trunk.

The button will flash for 60 minutes af-
ter closing the trunk.
Valet locking
1Neutral position
2Locked
Close the trunk (page 480).
Remove the mechanical key from the
SmartKey (
page 671).
Insert the mechanical key in the trunk
lid lock.
iThe emergency release button unlocks and
opens the trunk while the vehicle is standing still
or in motion.
iThe emergency release button does not
open the trunk if the vehicle battery is dis-
charged or disconnected.
iTo deny any unauthorized person access to
the trunk, e.g. when you valet park the vehicle,
lock it separately with the mechanical key. Leave
only the SmartKey or SmartKey with
KEYLESS-GO* less its mechanical key with the
vehicle.


485 Controls in detail
Trunk
Turn the mechanical key clockwise to
position 2 to lock the trunk.
The trunk remains locked even when the
vehicle is centrally unlocked.
Insert the mechanical key in the trunk
lid lock.
Turn the mechanical key counterclock-
wise to neutral position 1 to unlock the
trunk.
You can now open the trunk
(
page 479).
iYou can only cancel the separate trunk lock-
ing mode by means of the mechanical key.

486 Controls in detail
Power tilt/sliding sunroof
Opening and closing power tilt/sliding
sunroof
Warning!G
When closing the tilt/sliding sunroof, make
sure that there is no danger of anyone being
harmed by the closing procedure.
If the tilt/sliding sunroof encounters an ob-
struction that blocks its path in a circum-
stance where you are closing the tilt/sliding
sunroof by moving the tilt/sliding sunroof
switch past the resistance point, or by
pressing and holding button‹on the
SmartKey, by pressing and holding the sen-
sor surface (vehicles with KEYLESS-GO*) on
the outside door handle, the automatic re-
versal function will not operate.
The opening/closing procedure of the
tilt/sliding sunroof can be immediately halt-
ed by releasing the switch or, if the switch
was moved past the resistance point and re-
leased, by moving the switch in any direc-
tion.
The tilt/sliding sunroof is made out of glass.
In the event of an accident, the glass may
shatter. This may result in an opening in the
roof.
In a vehicle rollover, occupants not wearing
their seat belts or not wearing them properly
may be thrown out of the opening. Such an
opening also presents a potential for injury
for occupants wearing their seat belts
properly as entire body parts or portions of
them may protrude from the passenger
compartment.
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. A child’s unsupervised ac-
cess to a vehicle could result in an accident
and/or serious personal injury.
!To avoid damaging the seals, do not trans-
port any objects with sharp edges which can
stick out of the tilt/sliding sunroof.Do not open the tilt/sliding sunroof if there is
snow or ice on the roof, as this could result in
malfunctions.
Depending on vehicle production date your vehi-
cle may be equipped with a crank to open or
close the tilt/sliding sunroof manually should an
electrical malfunction occur (
page 674).
!Please keep in mind that weather conditions
can sometimes change rapidly. Make sure to
close the tilt/sliding sunroof when leaving the
vehicle. If water enters the vehicle interior, vehi-
cle electronics could be damaged which is not
covered by the Mercedes-Benz Limited
Warranty.
iWhen the tilt/sliding sunroof is open, reso-
nance noises may result in addition to the usual
wind noises. They are caused by minimal pres-
sure changes in the passenger compartment. To
reduce or eliminate these noises, change the po-
sition of the tilt/sliding sunroof or open a side
window slightly.

487 Controls in detail
Power tilt/sliding sunroof
1Push back to slide sunroof open
2Push forward to slide sunroof closed
3Push up to raise sunroof at rear
4Pull down to lower sunroof at rear
With the sunroof closed or tilted open, a
screen can be slid into the roof opening to
help provide shade. When sliding the sun-
roof open, the screen will also retract.
Switch on the ignition (page 344).
To open, close, raise or lower, move the
switch to resistance point in the re-
quired direction1to4 until the
tilt/sliding sunroof has reached the de-
sired position.
Express-operation: To open, close,
raise or lower, move the switch past
the resistance point in the required
direction1to4 and release.
The tilt/sliding sunroof opens or closes
completely.
Stopping during Express-opening/
closing: Move the switch in any direc-
tion.
iYou can also open or close the tilt/sliding
sunroof using the SmartKey, see “Summer open-
ing feature” (
page 385) and “Convenience
closing feature” (
page 386). Depending on
current position, the tilt/sliding sunroof may
also open or close when the air recirculation
button, (
page 469) is pressed and held
for 2 seconds.
iIf PRE-SAFE® has been activated, the
tilt/sliding sunroof closes automatically until
only a small gap remains.
iWith the SmartKey in starter switch
position0 or removed from the starter switch,
the tilt/sliding sunroof can be operated

until you open the driver’s or passenger door

for up to approximately 5 minutes
iIf the movement of the tilt/sliding sunroof is
blocked during the closing procedure, the sun-
roof will stop and reopen slightly.

488 Controls in detail
Power tilt/sliding sunroof
Synchronizing
The tilt/sliding sunroof must be synchro-
nized

after the tilt/sliding sunroof has been
closed manually (
page 674)

if the tilt/sliding sunroof can only be
opened with a jerking motion

after a malfunction
Switch on the ignition (page 344).
Press and hold the sunroof switch in
the direction of arrow3 until the
tilt/sliding sunroof is fully raised at the
rear.
Keep holding the sunroof switch in the
direction of arrow3 for approximately
1 second.
Check the Express-operation feature
(
page 487).
If the tilt/sliding sunroof opens com-
pletely, the sunroof is synchronized.
Otherwise repeat the above steps.
!Do not open the tilt/sliding sunroof com-
pletely if it is not aligned. Otherwise you could
damage the tilt/sliding sunroof.

489 Controls in detail
Panorama roof with power tilt/sliding panel*
Panorama roof with power tilt/sliding panel*
Roller sunblinds
The roller sunblinds are designed to pro-
tect you from excessive sunlight streaming
in through the panorama roof with power
tilt/sliding panel.
The front roller sunblind only operates with
the tilt/sliding panel closed. The front and
rear roller sunblind cannot be operated in-
dividually.
Switch on the ignition (page 344).Operating front roller sunblind
Roof panel switch
1Extend front roller sunblind
2Retract front roller sunblind
Extending or retracting: Move the
roof panel switch to the resistance
point in the required direction of
arrow1 or2 until the front roller
sunblind has reached the desired posi-
tion.
Express-extending: Move the roof
panel switch past the resistance point
in direction of arrow1 and release.
The front roller sunblind extends com-
pletely.
Stopping during Express-extending:
Move the roof panel switch in any di-
rection.
Operating rear roller sunblind from
front
1Extending and retracting
Extending or retracting: Press
button1 until the rear roller sunblind
has reached the desired position.
Warning!G
When extending/retracting the roller sun-
blinds, make sure that no one is in danger of
being injured by the closing procedure. The
extending/retracting of the roller sunblinds
can be immediately halted by releasing the
switch or, if the switch was pressed past the
resistance point and released, by pressing
the switch in any direction.
iTo change directions, you must first extend
or retract the rear roller sunblind completely.