2008 MERCEDES-BENZ SL550 start stop button

165 Controls in detail
Control system
Move the selection marker with
buttonæ or ç to the
Lighting
submenu.
Press button j or k repeatedly
until the message
Headlamps Delayed
Switch-off
appears in the multifunc-
tion display.
The selection marker is on the current
setting.
Press button æ or ç to switch
the headlamps delayed switch-off
feature
On or Off.
Turn the exterior lamp switch to
position U before turning off the
engine.
The headlamps delayed switch-off
feature is activated.You can temporarily deactivate the
headlamps delayed switch-off feature:
Before exiting the vehicle turn the
SmartKey in the starter switch to
position0.
Then turn it to position2 and back to
position0.
The headlamps delayed switch-off
feature is deactivated. It will reactivate
as soon as you reinsert the SmartKey in
the starter switch.
Vehicles with KEYLESS-GO*:
Press the KEYLESS-GO start/stop
button on the gear selector lever
(
page 41).
Setting interior lighting delayed
switch-off
Use this function to set whether you would
like the interior lighting to remain on for
10 seconds during darkness after you have
removed the SmartKey from the starter
switch.
Move the selection marker with
buttonæ or ç to the
Lighting
submenu.
Press button j or k repeatedly
until the message
Interior Lighting
Delayed Switch-off
appears in the
multifunction display.
The selection marker is on the current
setting.
Press button æ or ç to switch
the interior lighting delayed switch-off
feature
On or Off.

167 Controls in detail
Control system
Move the selection marker with
theæ orç button to the

Convenience
submenu.
Press button j or k repeatedly
until the message
Easy-entry
Function
appears in the multifunction
display.
The selection marker is on the current
setting.
Press button æ or ç to switch
the easy-entry/exit feature
On or Off.
Trip computer menu
Use the trip computer menu to call up
statistical data on your vehicle.
The following information is available:
Warning!G
You must make sure no one can become
trapped or injured by the moving steering
wheel when the easy-entry/exit feature is
activated.
To stop steering wheel movement, do one of
the following:

Move steering wheel adjustment stalk
(
page 47).

Press one of the memory position
buttons* or the memory button M*
(
page 129).
Do not leave children unattended in the ve-
hicle, or with access to an unlocked vehicle.
Children could open the driver’s door and
unintentionally activate the easy-entry/exit
feature, which could result in an accident
and/or serious personal injury.
FunctionPage
Fuel consumption statistics
since start168
Fuel consumption statistics
since last reset168
Resetting fuel consumption
statistics168
Distance to empty169
iThe last function called up will reappear the
next time you enter the trip computer menu.

199 Controls in detail
Automatic climate control
Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
Press button 2 once more
(
page 190).
The indicator lamp on the button
comes on.
The air conditioning uses the refrigerant
R134A. This refrigerant is free of CFCs
which are harmful to the ozone layer.
Residual 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
With the SmartKey:
Turn the SmartKey in the starter switch
to position1 or0, or remove it from
the starter switch.
Press button T (page 190).
The indicator lamp on the button
comes on.
With KEYLESS-GO*:
Turn off the engine by pressing the
KEYLESS-GO* start/stop button and
open the driver’s door (with the driver’s
door open, the starter switch is in posi-
tion 0, same as with the SmartKey re-
moved from the starter switch)
Press button T (page 190).
The indicator lamp on the button
comes on.
!If the 2 button on the automatic climate
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.
iHow long the system will provide heating
depends on the coolant temperature and the
selected temperature. The blower will run at low
speed regardless of the air distribution control
setting.

201 Controls in detail
Power windows
Power windows
Opening and closing the windows
The windows are opened and closed elec-
trically. The switches for all the windows
are on the driver’s door. The switch for the
passenger side windows is on the passen-
ger door.
1Left door and rear side windows
2Right door and rear side windows
Switch on the ignition (page 40).
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.
The closing of the rear side windows can be
immediately halted by releasing the switch.
If a door 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 door win-
dow, the automatic reversal function will
stop the door window and open it slightly.
If the door window encounters an obstruc-
tion that blocks its path in a circumstance
where you are closing the door window by
pulling and holding the switch, by pressing
and holding button ‹on the SmartKey,
by pressing and holding the lock button
(vehicles with KEYLESS-GO*) on an outside
door handle, by pressing and holding the re-
tractable hardtop switch, or by pressing and holding button,on the automatic
climate control panel, the automatic
reversal function will not operate.
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
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.
iDepending on the current position, the win-
dows may also open or close when the air recir-
culation button, on the control panel of the
automatic climate control (
page 196) is
pressed and held.
iAfter switching off the ignition (page 40)
or removing the SmartKey from the starter
switch, the windows can be operated

until you open a door

for at least 5 minutes if no door was opened

269 Operation
Driving instructions
To help prevent brake disk corrosion after
driving on wet road surfaces (particularly
salted roads), it is advisable to brake the
vehicle with considerable force prior to
parking. The heat generated serves to dry
the brakes.
If your brake system is normally only
subjected to moderate loads, you should
occasionally test the effectiveness of the
brakes by applying above-normal braking
pressure at higher speeds. This will also
enhance the grip of the brake pads.Refer to the description of the Brake Assist
System (BAS) (page 91).
Brake pad wear or a leak in the system may
be the reason for low brake fluid in the
reservoir.
The brake fluid level in the reservoir may
be too low or the electro-hydraulic brake
system may be malfunctioning if the brake
warning lamp in the instrument cluster
comes on and an acoustic warning sounds
although the parking brake is released
(
page 345).
Observe additional messages in the
multifunction display that may appear, see
(
page 377) through (page 382).
Have the brake system inspected immedi-
ately. Contact an authorized
Mercedes-Benz Center.All checks and service work on the brake
system should be carried out by qualified
technicians only. Contact an authorized
Mercedes-Benz Center.
Only install brake pads and brake fluid
recommended by Mercedes-Benz.
!Because the ESP® operates automatically,
the engine must be shut off (SmartKey in starter
switch position 0 or 1or KEYLESS-GO*
start/stop button in position 0 or 1) when the
parking brake is being tested on a brake test
dynamometer.
Active braking action through the ESP
® may
otherwise seriously damage the brake system.
Warning!G
Make sure not to endanger any other road
users when carrying out these braking
maneuvers.
Warning!G
If other than recommended brake pads are
installed, or other than recommended brake
fluid is used, the braking properties of the
vehicle can be degraded to an extent that
safe braking is substantially impaired. This
could result in an accident.
Be certain to read and observe the warning
notices on brake pad replacement
(
page 96).
!When driving down long and steep grades,
relieve the load on the brakes by shifting into a
lower gear to use the engine’s braking power.
This helps prevent overheating of the brakes and
reduces brake pad wear.

271 Operation
Driving instructions
ParkingTires
Treadwear indicators (TWI) are required by
law. These indicators are located in six
places on the tread circumference and be-
come visible at a tread depth of approxi-
mately
1/16in (1.6 mm), at which point the
tire is considered worn and should be re-
placed.
Warning!G
Do not park this vehicle in areas where com-
bustible materials such as grass, hay or
leaves can come into contact with the hot
exhaust system, as these materials could be
ignited and cause a vehicle fire.
To reduce the risk of personal injury or
damage to the vehicle drivetrain as a result
of vehicle movement, before turning off the
engine and leaving the vehicle always:

Keep right foot on brake pedal.

Firmly depress parking brake pedal.

Move the gear selector lever to
positionP.

Slowly release brake pedal.

When parked on an incline, turn front
wheels towards the road curb.

Turn the SmartKey or the SmartKey with
KEYLESS-GO* to starter switch
position0 and remove, or press the
KEYLESS-GO* start/stop button.

Take the SmartKey or the SmartKey with
KEYLESS-GO* with you and lock vehicle
when leaving.
Warning!G
If you feel a sudden significant vibration or
ride disturbance, or you suspect that possi-
ble damage to your vehicle has occurred,
you should turn on the hazard warning flash-
ers, carefully slow down, and drive with cau-
tion to an area which is a safe distance from
the road.
Inspect the tires and the vehicle underbody
for possible damage. If the vehicle or tires
appear unsafe, have the vehicle towed to
the nearest Mercedes-Benz Center or tire
dealer for repairs.

285 Operation
Engine compartment
If necessary, add engine oil.
For information on adding engine oil, see
(
page 286).
For more information on engine oil, see the
“Technical data” section (
page 457) and
(
page 460).
Other display messages
If the SmartKey or the KEYLESS-GO*
start/stop button is not in position2, the
following message will appear:
Turn ignition on
to measure
engine oil level
.
Switch on the ignition (page 40).If you see the message:
Observe
Waiting Time
If the engine is at operating tempera-
ture, wait 5 minutes before repeating
the check procedure.
If the engine is not at operating temper-
ature yet, wait 30 minutes before re-
peating the check procedure.
If you see the message:
Engine Oil Level
Not With
Engine Running
Turn off the engine.
If the engine is at operating tempera-
ture, wait 5 minutes before checking
oil.
If the engine is at operating tempera-
ture yet, you must wait 30 minutes be-
fore checking oil.If there is excess engine oil with the engine
at normal operating temperature, the
following message will appear:
Engine Oil Level
Reduce Oil Level
Have excess oil siphoned or drained
off. Contact an authorized
Mercedes-Benz Center.
For more information on messages in the
display concerning engine oil, see the
“Practical hints” section (
page 388).
!Excess oil must be siphoned or drained off.
It could cause damage to the engine and
emission control system not covered by the
Mercedes-Benz Limited Warranty.

338 Operation
Vehicle care
Fold the wiper arms forward until they
snap into place.
Clean the wiper blade inserts with a
clean cloth and detergent solution.
Use a soft, clean cloth and a mild win-
dow cleaning solution on all outside
and inside glass surfaces.
An automotive glass cleaner is recom-
mended.Rear window cleaning
Clean the rear window with the hardtop
fully raised and closed.
Use a soft, clean cloth and a mild win-
dow cleaning solution on all outside
and inside glass surfaces.
An automotive glass cleaner is recom-
mended.
Light alloy wheels
If possible, clean wheels once a week.
Use Mercedes-Benz approved Wheel
Care, a soft bristle brush and a strong
spray of water for cleaning the light al-
loy wheels.
Warning!G
For safety reasons, switch off wipers and re-
move SmartKey from starter switch (vehi-
cles with KEYLESS-GO*: Make sure the
vehicle’s on-board electronics have
status0.) before cleaning the windshield
and/or the wiper blades. Otherwise, the
wiper motor could suddenly turn on and
cause injury.
!Do not pull on the wiper blade inserts. They
could tear.
!Fold the windshield wiper arms back onto
the windshield before turning the SmartKey in
the starter switch or pressing the KEYLESS-GO
start/stop button (vehicles with KEYLESS-GO*).
Hold on to the wiper when folding the wiper arm
back. If released, the force of the impact from
the tensioning spring could crack the windshield.
!To clean the window interior, do not use a
dry cloth, abrasives, solvents or cleaners con-
taining solvents. Do not touch the inside of the
front, rear or side windows with hard objects
such as an ice scraper or ring. Doing so may
damage the windows.
Warning!G
Do not clean the rear window with the hard-
top in a position other than the fully raised
and closed position. Otherwise, the hardtop
may move unexpectedly which may result in
personal injury to you or others.
!Only use acid-free cleaning materials. Acid
may cause corrosion or damage the clear coat.