2009 MERCEDES-BENZ SLR electrical

Contents
Tire labeling .................................. 276
Load identification........................ 280
DOT, Tire Identification Number (TIN) .
281
Maximum tire load ....................... 282
Maximum tire inflation pressure... 283
Uniform Tire Quality Grading Standards
(U.S. vehicles) .............................. 284
Tire ply material............................ 286
Tire and loading terminology ........ 286
Rotating tires................................ 289
Anti-theft wheel nuts .................... 290
Winter driving..................................... 292
Winter tires*................................. 292
Snow chains ................................. 293
Maintenance ...................................... 294
Clearing the maintenance service
indicator message ........................ 294
Maintenance service term exceeded ...
295
Calling up the maintenance service due
date .............................................. 295
Resetting the maintenance service
indicator ....................................... 296
Vehicle care ....................................... 297
Cleaning and care of the vehicle .. 297Vehicle washing ........................... 298
Soft top care ................................ 300
Practical hints.................................. 302
What to do if ... .................................. 304
Lamps in instrument cluster ........ 304
Lamp in center console ................ 317
Vehicle status messages in the
multifunction display .................... 319
Symbol messages ........................ 332
Where will I find ...? ........................... 356
First aid kit ................................... 356
TIREFIT kit, electric air pump, towing
eye bolt and vehicle literature portfolio
356
Unlocking in an emergency ............... 357
Unlocking the vehicle ................... 357
Replacing SmartKey batteries............ 359
Replacing bulbs ................................. 361
Front lamps .................................. 362
Rear lamps ................................... 362
Replacing wiper blades ...................... 363
Removing wiper blades ................ 363
Installing wiper blades ................. 364
Flat tire .............................................. 365Preparing the vehicle ................... 365
Sealing tires with TIREFIT ............. 365
Batteries ............................................ 370
Charging the batteries ................. 371
Towing the vehicle ............................. 373
Installing/reinstalling towing eye bolt..
375
Points to bear in mind .................. 375
Transporting the vehicle .............. 375
Fuses ................................................. 376
Technical data................................. 378
Parts service ...................................... 380
Warranty coverage ............................ 381
Loss of Service and Warranty
Information Booklet ..................... 381
Identification labels ........................... 382
Engine number ............................. 382
Layout of poly-V-belt drive ................. 383
Engine ............................................... 384
Rims and tires ................................... 385
Mixed size tires ............................ 386
Winter tires* ................................ 388
Electrical system ............................... 390
Main dimensions ............................... 391

64 Safety and SecurityOccupant safety
Safety guidelines for the seat belt,
Emergency Tensioning Device (ETD)
and air bag
i
Air bags are designed to activate only in cer-
tain frontal impacts (front air bags, knee air
bags) and side impacts (head-thorax air bags)
which exceed preset thresholds. Only during
these types of impacts will they provide their
supplemental protection.
The driver and passenger should always wear
their seat belts. Otherwise it is not possible for
the air bags to provide their supplemental
protection.
In cases of other types of impacts and impacts
below air bag deployment thresholds, air bags
will not deploy. The driver and passenger will
then be protected to the extent possible by a
properly fastened seat belt. A properly fastened
seat belt is also needed to provide the best pos-
sible protection in a rollover.
We caution you not to rely on the presence of the
air bags in order to avoid wearing your seat belt.
It is important to your safety and that of your pas-
senger that you replace deployed air bags and
repair any malfunctioning air bags to ensure that
the vehicle will continue to provide supplemental
crash protection for occupants.
Warning!
G


Damaged seat belts or seat belts that
were highly stressed in an accident
must be replaced and their anchoring
points must also be checked. Only use
seat belts installed or supplied by an
authorized Mercedes-Benz Center.


Air bags and ETDs are designed to func-
tion on a one-time-only basis. An air bag
or ETD that was activated must be
replaced.


Air bags and ETDs contain perchlorate
material, which may require special han-
dling and regard for the environment.
Check with your local government’s dis-
posal guidelines. California residents,
see www.dtsc.ca.gov/Hazardous-
Waste/Perchlorate/index.cfm.


Do not pass seat belts over sharp edges.
They could tear.


Do not make any modification that could
change the effectiveness of the seat
belts.


Do not bleach or dye seat belts as this
may severely weaken them. In a crash,
they may not be able to provide
adequate protection.


No modifications of any kind may be
made to any components or wiring of
the SRS. This includes changing or
removing any component or part of the
SRS, the installation of additional trim
material, badges, etc. over the steering
wheel hub, passenger front air bag cov-
er, door frame trims, or door trim pan-
els, and installation of additional
electrical/electronic equipment on or
near SRS components and wiring. Keep
area between air bags and occupants
free from objects (e.g. packages,
purses, umbrellas, etc.).


Air bag system components will be hot
after an air bag has inflated. Do not
touch.

88 Safety and SecurityDriving safety systems
The electro-hydraulic brake system is
automatically activated when you

unlock the vehicle with the SmartKey


open the driver’s or passenger door


turn the SmartKey in the starter switch
to position1


depress the brake pedal


release the parking brake
Warning!
G
The electro-hydraulic brake system requires
electrical power to operate.
A malfunction in the vehicle’s power supply
or electrical system may impair brake sys-
tem operation and switch it into its emer-
gency operation mode. In such a case, the
red brake warning lamp (
page 307)
comes on and warning messages
(
page 334) appear in the multifunction
display while driving. To brake, the driver
must then apply significantly greater brake
pedal pressure and depress the pedal much
further to obtain the expected braking ef-
fect. If necessary, apply full pressure to the
brake pedal. Stopping distance is increased!
If there is a malfunction in the electro-hy-
draulic brake system, we recommend that
the vehicle be transported with all wheels
off the ground using flatbed or appropriate
wheel lift/dolly equipment.
A tow bar must be used if circumstances do
not permit the use of the recommended
towing methods and the vehicle requires
towing with all four wheels on the ground.
Towing the vehicle with all four wheels on
the ground is only permissible for distances
u p t o 3 0 m i l e s ( 5 0 k m ) a n d a t a s p e e d n o t t o
exceed 30 mph (50 km/h). For more infor-
mation, see “Towing the vehicle”
(page 373).
i
If the electro-hydraulic brake system is acti-
vated as the brake pedal is first depressed, you
may feel a reduced pedal resistance and longer
pedal travel than normal. When releasing the
pedal, you may also feel the brake pedal pulsate
and you may hear a sound which is caused by the
activation of the electro-hydraulic brake system
pump. This is normal and not an indication of a
malfunction. Pedal travel returns to normal when
you release the brake pedal and the sound soon
ceases.
If you experience the above while driving and the
red brake warning lamp (
page 307) illumi-
nates and/or warning messages appear in the
multifunction display (
page 334), the brake
system is malfunctioning. Follow the instructions
of the warning message(s) and have the brake
system checked immediately.

183 Controls in detail
Good visibility
Glare through a door window
Swing respective sun visor down.

Disengage the sun visor from
mounting3.

Pivot the sun visor to the side.
Vanity mirror

Swing respective sun visor down.

Flip up vanity mirror cover1 to access
the vanity mirror.
Vanity mirror lamp 2 comes on.

After using the vanity mirror, flip down
vanity mirror cover 1.

Swing the sun visor up.
Rear window defroster
The rear window defroster uses a large
amount of power. To keep the battery
drain to a minimum, switch off the
defroster as soon as the rear window is
clear. The defroster is automatically
deactivated after approximately
6 to 17 minutes of operation depending on
the outside temperature.
Activating
Press buttonF on the automatic
climate control panel (
page 186).
The indicator lamp on the button
comes on.Deactivating

Press buttonF again.
The indicator lamp on the button goes
out.
i
When the sun visor is disengaged from
mounting3, vanity mirror lamp2 switches
off.
!
To avoid damage to vanity mirror cover 1,
make sure it is closed before pivoting the sun
visor to the side.
Warning!
G
Any accumulation of snow and ice should be
removed from the rear window before
driving. Visibility could otherwise be
impaired, endangering you and/or others.
!
If the rear window defroster switches off too
soon and the indicator lamp starts flashing, this
means that too many electrical consumers are
operating simultaneously and there is insuffi-
cient voltage in the battery. The system re-
sponds automatically by deactivating the rear
window defroster.
As soon as the battery has sufficient voltage, the
rear window defroster automatically switches
back on automatically.

196 Controls in detailOpen airOpening and closing the door windows
The door windows are opened and closed
electrically. The switches for the door win-
dows are located on the door sill on the
driver’s side (
page 34). The switch for
the passenger side is located on the door
sill on the passenger side.
1Left window
2Right window

Switch on the ignition (
page 40).
Warning!
G
When closing the door windows, make sure
there is no danger of anyone being harmed
by the closing procedure.
The closing of the door windows can be im-
mediately halted by releasing the switch or,
if switch was pulled past the resistance
point and released, by either pressing or
pulling the respective switch.
If the window encounters an obstruction
t h a t b l o c k s i t s p a t h i n a c i r c u m s t a n c e w h e r e
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
t h a t b l o c k s i t s p a t h i n a c i r c u m s t a n c e w h e r e
you are closing the window by pulling and
holding the switch, or by pressing and hold-
ing button‹ on the SmartKey, or by
pressing and holding the ,button on the
climate control panel, the automatic
reversal function will not operate.
When leaving the vehicle, always remove the
SmartKey from 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.i
After switching off the ignition (
page 40)
or removing the SmartKey from the starter
switch, the door windows can be operated


until you open a door


for at least 5 minutes if no door was opened

199 Controls in detail
Open air
Your vehicle is equipped with a semi-auto-
matic soft top. This means that you will
have to release or lock the soft top manu-
ally by means of a handle. The soft top can
be opened or closed electrically using the
buttons on the soft top switch.
1Handle
Handle1 serves to release or lock the
soft top.
Warning!
G
When opening or closing the soft top, make
sure that nobody is trapped or injured by the
moving parts such as the soft top linkage.
If potential danger exists, release the soft
top switch. The soft top folding mechanism
stops immediately.Warning!
G
When leaving the vehicle, always remove the
SmartKey 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.
!
The opened soft top is stored behind the
roll-over bars. Never sit on the stored soft top
and never store objects on it. You will otherwise
damage the soft top.
Never use the space that emerges between the
roll-over bars and the rear window when the soft
top is closed as a storing space.
!
When you open or close the soft top, make
sure


there is sufficient clearance, as the soft top
swings upwards


that the soft top fabric is not frozen


that the soft top is not dirty or wet


that no items are placed on the soft top
Otherwise the soft top or other vehicle compo-
nents could be damaged.
!
Please keep in mind that weather conditions
can sometimes change rapidly. Make sure to
close the soft top when leaving the vehicle. If
water enters the vehicle interior, vehicle elec-
tronics could be damaged which is not covered
by the Mercedes-Benz Limited Warranty.

200 Controls in detailOpen airThe soft top switch is located on the lower
part of the center console.Soft top switch cover2Cover
3To open the soft top
4To close the soft topOpening the soft top

Switch on the ignition.

Fold down handle1.

Turn the handle clockwise as far as it
will go and leave it in this position (re-
lease position).

Push the soft top up by means of the
handle as far as it will go.
The soft top is released. An acoustic
signal indicates that you can now open
the soft top electrically.

Open soft top switch cover2.

Press and hold button3, until the soft
top has opened completely and until it
has locked.
While the soft top is opening, the K
symbol and the message
Top In
Operation
appear in the multifunction
display.
The windows open.
The opening process is completed.
i
Make sure that the soft top is dry before
opening it. Otherwise, water may enter the inte-
rior.
!
Leave the handle in the release position. Do
not turn it back. Otherwise, the locking mecha-
nism could be damaged when closing the soft
top.

201 Controls in detail
Open air
Closing the soft top
Switch on the ignition.

Press and hold button4, until the
electrical closing process has been
completed.
While the soft top is closing, the K
symbol and the message
Top In
Operation
appear in the multifunction
display.
An acoustic signal indicates that you
can now lock the soft top.

Pull the soft top by means of the handle
down on the windscreen frame.

Turn the handle counter-clockwise as
far as it will go.
The soft top is locked.

Fold up the handle.
Wind screen
The wind screen is a wind protection
device for driving with the soft top open.
The wind screen is stored on the inside of
the trunk lid.
1Wind screen
2Release
!
Always remove the soft top linkage covers
(
page 202) before closing the soft top.
You could otherwise damage the covers or the
linkages.
!
Before pulling the soft top down, make sure
that the handle is in the release position. Other-
wise, the locking mechanism could be damaged
when closing the soft top.
!
Do not pull on the wind screen to close the
trunk lid. Otherwise, the wind screen or the trim
panel could be damaged.