MERCEDES-BENZ SL55AMG 2005 R230 Owner's Manual

189 Controls in detail
Automatic climate control
Rear window defroster
The rear window defroster uses a large
amount of power. To keep the battery
drain to a minimum, switch off the defrost-
er as soon as the rear window is clear. The
defroster is automatically deactivated af-
ter approximately 6 to 17 minutes of oper-
ation depending on the outside
temperature.
Activating
Press button F (
page 183).
The indicator lamp on the button
comes on.Deactivating

Press button F (
page 183) again.
The indicator lamp on the button goes
out.
Warning!
G
Any accumulation of snow and ice should be
removed from the rear window before driv-
ing. Visibility could otherwise be impaired,
endangering you and others.!The rear window defroster cannot be
switched on when the retractable hard-
top is open. The indicator lamp will
start flashing if the hardtop is open.

Close the retractable hardtop.
The rear window defroster can again be
turned on.
!If the rear window defroster switches
off too soon and the indicator lamp
starts flashing, this means that too
many electrical consumers are operat-
ing simultaneously and there is insuffi-
cient voltage in the battery. The system
responds automatically by deactivating
the rear window defroster.
As soon as the battery has sufficient
voltage, the rear window defroster au-
tomatically turns itself back on.

190 Controls in detailAutomatic climate controlResidual heat and ventilation
With the engine switched off, it is possible
to continue to heat or ventilate the interior
for up to 30 minutes. This feature makes
use of the residual heat produced by the
engine.Activating

Turn the SmartKey in the starter switch
to position1 or0 o r r e m o v e i t f r o m t h e
starter switch.

Press button T (
page 183).
The indicator lamp on button T
comes on.Deactivating

Press button T (
page 183).
The indicator lamp on button T
goes out.
The residual heat is automatically turned
off:


when the ignition is switched on


after about 30 minutes


if the battery voltage drops
iHow long the system will provide heat-
ing depends on the coolant tempera-
ture and the temperature set by the
operator. The blower will run at speed
setting1 regardless of the air distribu-
tion control setting.

191 Controls in detail
Automatic climate control
Deactivating the automatic climate control system
Deactivating
It is possible to completely deactivate the
automatic climate control system. 
Press button M (
page 183).
The indicator lamp on button M
comes on.Reactivating
There are several ways to reactivate the
automatic climate control system:

Press any button on the automatic cli-
mate control panel (
page 183).
The indicator lamp on button M
switches off.
or

Turn one of the control knobs on the
automatic climate control.
The indicator lamp on button M
switches off.
Air conditioning
The air conditioning is operational while
the engine is running and cools the interior
air to the temperature set by the operator.
Deactivating
It is possible to deactivate the air condi-
tioning (cooling) function of the automatic
climate control system. The air in the vehi-
cle will then no longer be cooled or dehu-
midified.
Press ± button (
page 183).
The indicator lamp on the ±
button comes on.
iThis setting is only recommended when
the retractable hardtop is open.
iCondensation may drip out from under-
neath the vehicle. This is normal and
not an indication of a malfunction.

192 Controls in detailAutomatic climate controlActivating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
Press ± again (
page 183).
The indicator lamp on the ± button
goes out.
The air conditioning uses the refrigerant
R134A. This refrigerant is free of CFCs
which are harmful to the ozone layer.
Ventilated storage compartments
The glove box and the armrest storage
compartment have their own air vents that
allow for cooling ventilation when the auto-
matic climate control system is activated.Glove box1Thumbwheel
2Air ventOpening the air vent

Turn thumbwheel1 upwards.
Closing the air vent

Turn thumbwheel1 downwards.
Storage compartment under the armrest1Thumbwheel
2Air vent
Opening the air vent
Turn thumbwheel1 to the right.
Closing the air vent

Turn thumbwheel1 to the left.
!If the ± button on the automatic cli-
mate control panel starts to flash, this
indicates that the air conditioning is
losing refrigerant. The compressor has
turned off. The air conditioning cannot
be turned on again.

Have the air conditioning checked
at the nearest authorized
Mercedes-Benz Center.
iYou should keep these air vents closed
when outside temperatures are low.

193 Controls in detail
Power windows
Power windows
Opening and closing the windows
The side windows are opened and closed
electrically. The switches for all the side
windows are on the driver’s door. The
switch for the passenger side is on the pas-
senger door.
1Left front and rear windows
2Right front and rear windows

Switch on the ignition (
page 36).
Warning!
G
When closing the windows, make sure that
there is no danger of anyone being injured
by the closing procedure.
The closing of the door windows can be im-
mediately halted by releasing the switch or,
if the switch was pulled past the resistance
point and released, by either pressing or
pulling the respective switch.
If the window encounters an obstruction
that blocks its path in a circumstance where
you pulled the switch past the resistance
point and released it to close the window,
the automatic reversal function will stop the
window and open it slightly.
If the window encounters an obstruction
that blocks its path in a circumstance where
you are closing the window by pulling and
holding the switch, by pressing and holding
button ‹on the SmartKey,
or by pressing and holding the lock button
(vehicles with KEYLESS-GO*) on the door
handle, the automatic reversal function will
not operate.
When leaving the vehicle, always remove the
SmartKey or the SmartKey with
KEYLESS-GO* from the starter switch, take
it with you, and lock the vehicle. Do not
leave children unattended in the vehicle, or
with access to an unlocked vehicle. Unsu-
pervised use of vehicle equipment can
cause an accident and/or serious personal
injury.iYou can also open or close the win-
dows using the , button on the
control panel of the automatic climate
control (
page 187).

194 Controls in detailPower windowsOpening the windows
Press switch1 or2 to the resistance
point.
The corresponding window will move
downwards until you release the
switch.
Opening the rear windows if the hardtop
is closed:

Open the front window.

Press switch1 or 2 to the resistance
point again.
The corresponding rear window will
open completely.Closing the windows

Pull switch1 or2 to the resistance
point.
The corresponding window will move
upwards until you release the switch.
Closing the rear windows if the hardtop
is closed:

Close the front window.

Pull switch1 or 2 to the resistance
point again.
The corresponding rear window will
close completely.Fully opening the windows
(Express-open)

Press switch1 or2 past the resis-
tance point and release.
The corresponding window opens com-
pletely.
iIf the hardtop is open, the respective
rear window will open automatically as
soon as the front window is completely
open.
Warning
G
If you pull and hold the switch up when clos-
ing the window, and upward movement of
the window is blocked by some obstruction
including but not limited to arms, hands, fin-
gers, etc., the automatic reversal will not op-
erate.
iIf the hardtop is open, the respective
rear window will open automatically as
soon as the front window is completely
open.

195 Controls in detail
Power windows
Fully closing the windows
(Express-close)
Pull switch1 or2 past the resis-
tance point and release.
The corresponding window closes com-
pletely.
If the upward movement of the window is
blocked during the closing procedure, the
window will stop and open slightly.
Stopping windows

Press or pull the respective switch
again.Closing the windows with the
SmartKey with KEYLESS-GO*

Press and hold lock button at door
(page 60) until the side windows are
closed.
Synchronizing power windows
The power window must be resynchro-
nized each time

after the battery has been disconnect-
ed


if the power windows cannot be fully
opened (Express-open) or closed
(Express-close)
Synchronizing the power windows

Switch on ignition.

Pull the power window switches until
the side windows are closed.
Hold the switches for approximately
one second.
The power windows are synchronized.
Warning
G
Driver’s door only:
If within five seconds the switch is again
pulled past the resistance point and re-
leased, the automatic reversal will not
operate.
Warning!
G
When closing the windows make sure that
there is no danger of anyone being harmed
by the closing procedure.
The windows will not automatically re-open
if blocked during convenience closing.
If potential danger exists, proceed as fol-
lows:

Release the lock button.


Pull on the door handle and hold firmly.
The side windows open for as long as
the door handle is held but the door not
opened.

196 Controls in detailRetractable hardtopOpening and closing the retractable hardtop
For safety reasons, the retractable hardtop
can only be opened and closed when the
vehicle is standing still.Warning!
G
Before operating the switch for the retract-
able hardtop, make sure there is no danger
of anyone being injured by the moving parts
(retractable roof, roof frame, and trunk lid)
due to inattention.
Hands must never be placed near the roof
frame, upper windshield area, hardtop, shelf
behind roll bars, or trunk lid while the re-
tractable hardtop is being raised or lowered.
Serious personal injury may occur.
If potential danger exists, release the re-
tractable hardtop switch. This immediately
interrupts the raising or lowering procedure.
You then can operate the hardtop switch to
raise or lower the hardtop away from the
danger zone.
Warning!
G
When leaving the vehicle, always remove the
SmartKey or the SmartKey with
KEYLESS-GO* from the starter switch, take
it with you, and lock the vehicle. Do not
leave children unattended in the vehicle, or
with access to an unlocked vehicle. Unsu-
pervised use of vehicle equipment can
cause an accident and/or serious personal
injury.!Never sit or place heavy objects on the
rear shelf. Doing so could cause dam-
age to the retractable hardtop and the
rear shelf.
!When opening and closing the retract-
able roof, make sure

there is sufficient clearance for the
hardtop to move up and the trunk
lid to move back


the luggage cover is extended and
closed


the trunk lid is closed


no roof luggage carrier is installed


the outside temperature is above
+5°F (–15°C)
Otherwise the roof and trunk of the ve-
hicle could be damaged.

197 Controls in detail
Retractable hardtop
Luggage cover
The luggage cover is located in the trunk.
1Handle
2Holders
Closing luggage cover
Pull out the luggage cover using
handle1.

Hook the luggage cover into left and
right side holders2.Opening luggage cover

Unhook luggage cover from side hold-
ers.

While holding on to handle1, guide
luggage cover back into its storage
compartment. Opening the retractable hardtop with
the switch
Hardtop switchBefore pulling on the hardtop switch, you
must make sure

the parking brake is engaged
(page 50)


the luggage cover is closed, see Lug-
gage cover


the trunk lid is closed


the ignition is switched on
!To prevent damage to the hardtop or
luggage/cargo when lowering the roof:

Load trunk only to the height of the
luggage cover.


Do not permit luggage/cargo to
push up the closed luggage cover.


Do not load anything on top of or in
front of the luggage cover.


Do not place anything on the shelf
behind the roll bar.

198 Controls in detailRetractable hardtop
Pull up on the hardtop switch as indi-
cated by the arrow until the hardtop is
completely lowered into its trunk stor-
age compartment and the indicator
lamp in the hardtop switch goes out.
The multifunction display will briefly
show the message
K
Retractable roof Open
.Closing the retractable hardtop with
the switch
Before pressing the hardtop switch, you
must make sure


the parking brake is engaged
(page 50)


the luggage cover is closed
(page 197)


the trunk lid is closed


the ignition is switched on

Press the hardtop switch as indicated
by the arrow until the hardtop is com-
pletely closed and locked and the indi-
cator lamp in the hardtop switch goes
out.
The multifunction display will briefly
show the message
+
Retractable roof Closed
.
iBe sure that the roof is dry before you
open it. Otherwise water may enter the
trunk interior.
Warning!
G
If the retractable hardtop is not fully opened
or closed, a warning will sound after 15 sec-
onds, pressure in the hardtop’s hydraulic
system will drop and the hardtop will lower.
Be sure to keep the hardtop switch pulled or
pressed until the hardtop is fully opened or
closed. The hydraulic pump will then shut
off.
To prevent possible accidents, drive the ve-
hicle only with the hardtop either completely
closed and locked, or fully lowered into its
storage compartment.