MERCEDES-BENZ SLR 2009 R199 Owner's Manual

291 Operation
Tires and wheels
Fitting anti-theft wheel nuts
Unscrew a wheel bolt from one of the
wheels.

Replace that wheel bolt with one of the
anti-theft wheel nuts1 delivered with
your vehicle.

Fasten anti-theft wheel nut1 using
wheel nut key2 and tighten with a
torque wrench to a tightening torque of
95 lb-ft (130 Nm).Warning!
G
The wheels could come loose if the wheel
bolts are not tightened to a torque of 95 lb-ft
(130 Nm). Have the tightening torque
checked after changing a wheel.
Warning!
G
The wheels could come loose if the wheel
bolts are not tightened to a torque of 95 lb-ft
(130 Nm). Have the tightening torque
checked after changing a wheel.i
Keep the anti-theft wheel nut key in a conve-
nient place in your vehicle where you and service
personnel can always find it easily when it is
needed.
i
If you should lose the anti-theft wheel nut
key or one of the anti-theft wheel nuts, please
contact an authorized Mercedes-Benz Center for
a replacement.

292 OperationWinter drivingBefore the onset of winter, have your
vehicle winterized at an authorized
Mercedes-Benz Center. This service
includes:

Check of anticorrosion and antifreeze
concentration.


Addition of cleaning concentrate to the
water of the windshield and headlamp
cleaning system. Add MB Concentrate
“MB Summerfit” to a premixed wind-
shield washer solvent/antifreeze
which is formulated for below freezing
temperatures (
page 401).


Battery test. Battery capacity drops
with decreasing ambient temperature.
A well charged battery helps to make
sure that the engine can be started,
even at low ambient temperatures.


Tire change. Mercedes-Benz recom-
mends M+S rated radial-ply tires with a
minimum tread depth of approximately 1/6in (4 mm) on all four wheels for the
winter season.
Winter tires*
Always use winter tires at temperatures
below 45°F (7°C) and whenever wintry
road conditions prevail. Not all M+S rated
tires provide special winter performance.
Make sure the tires you use show the
mountain/snowflake.marking on the
tire sidewall. These tires meet specific
snow traction performance requirements
of the Rubber Manufacturers Association
(RMA) and the Rubber Association of Can-
ada (RAC) and have been designed specif-
ically for use in snow conditions. Use of
winter tires is the only way to achieve the
maximum effectiveness of the ABS and
ESP
® in winter operation.
For safe handling, make sure that all
mounted winter tires are of the same make
and have the same tread design.Always observe the speed rating of the
winter tires installed on your vehicle. If the
maximum speed for which your tires are
rated is below the speed rating of your
vehicle, you must place a notice to this
effect where it will be seen by the driver.
Such notices are available from your tire
dealer or from any authorized
Mercedes-Benz Center.
After you have fitted the winter tires,
restart the TPMS (
page 274).
!
A wheel change should only be carried out
at an authorized Mercedes-Benz Center. Other-
wise there is a danger of damaging the vehicle by
jacking it up incorrectly.
Warning!
G
Winter tires with a tread depth of less than 1/6in (4 mm) must be replaced. They are no
longer suitable for winter operation, in par-
ticular because they do not provide suffi-
cient grip. This could cause you to lose
control of your vehicle and cause an acci-
dent.

293 Operation
Winter driving
Snow chains
Snow chains should only be driven on
snow-covered roads at speeds not to
exceed 30 mph (50 km/h). Remove chains
as soon as possible when driving on roads
without snow.Please observe the following guidelines
when using snow chains:


Use of snow chains is not permissible
with all wheel/tire combinations.


Snow chains should only be used on
the rear wheels. Follow the manufac-
turer’s mounting instructions.


Only use snow chains that are
approved by Mercedes-Benz. Any au-
thorized Mercedes-Benz Center will be
glad to advise you on this subject.


Use of snow chains may be prohibited
depending on location. Always check
local and state laws before installing
snow chains.
i
When driving with snow chains, you may
wish to deactivate the ESP
® (page 86) before
setting the vehicle in motion. This will improve
the vehicle’s traction.
!
If snow chains are mounted to the front
wheels, they may scrape against the body or axle
components. The tires or the vehicle could be
damaged as a result.
!
Use of snow chains is not permissible with
tire sizes:


255/35 ZR19 (96Y) XL (Summer tires only)


295/30 ZR19 (100Y) XL


295/35 ZR18 (99Y)

294 OperationMaintenanceIn order to maintain the performance and
safety of your vehicle, we strongly recom-
mend that you have your vehicle serviced
by an authorized Mercedes-Benz Center,
every 12 months, even if the vehicle has
covered less than 10 000 miles
(15 000 km) in that time.
The maintenance service indicator will
notify you when the next maintenance ser-
vice is due within the next 12 months or
10 000 miles (15 000 km), whichever
comes sooner.Before the next maintenance service is
due, one of the following messages will ap-
pear in the right multifunction display while
you are driving or when you switch on the
ignition:
Service In .. Days
Service In .. Miles

When the maintenance service is due, the
following message appears in the multi-
function display:
Service Due Now
Clearing the maintenance service indicator message
The maintenance service indicator mes-
sage is automatically cleared after 30 sec-
onds when you switch on the ignition. You
can also clear it yourself.
1Reset button
Press reset button 1.
The maintenance service indicator
message is cleared and the standard
display appears in the multifunction
display (
page 117).
!
Failure to have the vehicle maintained in ac-
cordance with the Maintenance Booklet and
maintenance service indicator at the designated
times/mileage will result in vehicle damage not
covered by the Mercedes-Benz Limited
Warranty.
!
Excessive load on the brake system causes
increased wear of brake pads and brake disks. If
the brake pads have to be replaced multiple
times within one maintenance service interval,
the brake disks must be checked. Observe the
information given in the Maintenance Booklet
and contact an authorized Mercedes-Benz
Center.

295 Operation
Maintenance
Maintenance service term exceeded
If you have exceeded the suggested main-
tenance service term, you will see the fol-
lowing message in the right multifunction
display:Service Exceeded By .. Days
Service Exceeded By .. MilesAny authorized Mercedes-Benz Center will
reset the maintenance service indicator
following a completed maintenance
service.Calling up the maintenance service due
date
Switch on the ignition (
page 40).

Press buttonè orÿ on the
multifunction steering wheel repeated-
ly until the standard display appears in
the multifunction display (
page 117).

Press button k or j on the
multifunction steering wheel until the
maintenance service indicator service
symbol 9 appears in the left multi-
function display and the maintenance
service deadline appears in the right
multifunction display.
i
If the vehicle is not be used for a longer pe-
riod of time, do not disconnect the consumer
battery. Instead, maintain the condition of the
battery by using the battery charger approved by
Mercedes-Benz for use on the SLR and supplied
with the car (
page 372). This charger automat-
ically controls the charge rate, and can be left
connected to the car for long periods without
damage to the battery.
If the battery supplying the vehicle’s electrical
consumers is disconnected, the days of discon-
nection will not be included in the count shown
by the maintenance service indicator. To arrive
at the true maintenance service deadline, you
will need to subtract these days from the days
shown in the maintenance service indicator.
Do not confuse the maintenance service indica-
tor with the engine oil level indicator:.

296 OperationMaintenanceResetting the maintenance service indicator
In the event that the maintenance service
on your vehicle is not carried out by an
authorized Mercedes-Benz Center, you can
have the maintenance service indicator
reset. The automotive maintenance facility
carrying out the maintenance service will
find the information for resetting the
maintenance service indicator in the
maintenance-relevant information for your
vehicle. Such information is available from
any authorized Mercedes-Benz Center or
directly from Mercedes-Benz.
i
If the maintenance service indicator was in-
advertently reset, have an authorized
Mercedes-Benz Center correct it.
Only reset if the proper maintenance service has
been performed. Resetting the system without
performing the proper service as called for by
the maintenance service indicator will result in
engine damage and/or other vehicle damage not
covered by the Mercedes-Benz Limited
Warranty.

297 Operation
Vehicle care
Vehicle care
Cleaning and care of the vehicle
If you have any questions about proper
care of your vehicle, please contact an
authorized Mercedes-Benz Center.Depending on body color the characteris-
tic carbon structure of the body surface
may become visible due to high ambient
temperatures and humidity. This phenom-
enon is related to the technology and
concept of the vehicle’s body.
While in operation, even while parked, your
vehicle is subjected to varying external
influences which, if gone unchecked, can
attack the paintwork as well as the
underbody and cause lasting damage.
Such damage is caused not only by
extreme and varying climatic conditions,
but also by:


Air pollution


Road salt


Tar


Gravel and stone chippingTo avoid paint damage, you should
immediately remove:


Grease and oil


Fuel


Coolant


Brake fluid


Bird droppings


Insects


Tree resins, etc.
Frequent washing reduces and/or elimi-
nates the aggressiveness and potency of
the above adverse influences.
More frequent washings are necessary to
deal with unfavorable conditions:


near the ocean


in industrial areas (smoke, exhaust
emissions)


during winter operation
Warning!
G
Many cleaning products can be hazardous.
Some are poisonous, others are flammable.
Always follow the instructions on the partic-
ular container. Always open your vehicle’s
doors or door windows when cleaning the in-
side.
Never use fluids or solvents that are not
designed for cleaning your vehicle.i
Mercedes-Benz recommends that you use
Mercedes-Benz care products. These have been
specially developed to suit Mercedes-Benz vehi-
cles and are state of the art. Mercedes-Benz
care products are available from any
Mercedes-Benz Center.
!
Affixing stickers, magnets, adhesive tape or
similar materials to painted body components
may damage the paintwork.

298 OperationVehicle careYou should check your vehicle from time to
time for stone chipping or other damage.
Any damage should be repaired as soon as
possible.Vehicle washingHand-wash
Do not use hot water or wash your vehicle
in direct sunlight.

Only use a mild car wash detergent,
which is recommended by
Mercedes-Benz.

Only use a soft sponge or a washing
brush.

Thoroughly spray the vehicle with a
diffused jet of water.
Direct only a very weak spray towards
the ventilation intake.

Use plenty of water and rinse the
sponge and chamois frequently.

Rinse with clean water and thoroughly
dry with a chamois.
Do not allow cleaning agents to dry on
the finish.Automatic car wash
You can have your car washed in an auto-
matic car wash from the start. Automatic
car washes without brushes are
preferable.

To protect the filter system, switch the
automatic climate control to air
recirculation mode (
page 193).
If the vehicle is very dirty, prewash it be-
fore running it through the automatic car
wash.
!
When washing the vehicle, fine and rigid
particles in sponges or brushes could scratch or
otherwise damage the paint. This applies to
both, hand-wash or automatic car wash.
Mercedes-Benz recommends you to have your
vehicle cleaned at an automatic car wash from
the start, preferably one without brushes, or to
use plenty of water when hand-washing your
vehicle.
Do not wash the car in direct sunlight and when
the body surface is hot.
In the winter, remove salt residue quickly and
thoroughly.
!
Do not use scouring agents on these parts.
Never apply strong force and only use a soft,
non-scratching cloth when cleaning the vehicle.
Do not attempt to wipe the surface with a dry
cloth or sponge.
Otherwise you may scratch or damage the paint.
!
Do not clean your vehicle in an automatic
touchless car wash which uses caustic spray.
Otherwise, the caustic spray will damage the
paint or ornamental moldings.
Do not choose final hot-wax conservation when
taking the vehicle to an automatic car wash.

299 Operation
Vehicle care
Power washer
Cleaning the windows and wiper blades

Remove the SmartKey from the starter
switch.

Fold the wiper arm away from the
windshield (
page 363).
You must feel the wiper arm engage in
position.

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
recommended.
!
Make sure that the windshield wiper switch
is set to0 (
page 52). Otherwise, the rain
sensor could activate and cause the wipers to
move unintentionally. This may lead to vehicle
damage.
Due to the width of the vehicle, fold in exterior
rear view mirrors prior to running the vehicle
through an automatic car wash to prevent
damage to the mirrors.
i
After running the vehicle through an auto-
matic car wash, wipe any wax off of the wind-
shield (
page 299). This will prevent smears
and reduce wiping noise which can be caused by
residual wax on the windshield.
!
Do not use power washer to clean your
vehicle or the engine.
!
The hood must be opened (
page 250) be-
fore folding the wiper arm away from the wind-
shield. You could otherwise damage the hood
and/or the wiper arms.
!
Never open or close the hood when the wip-
er arms are folded away from the windshield.
You could otherwise damage the hood and/or
the wiper arm.
Warning!
G
For safety reasons, switch off wipers and
remove SmartKey from starter switch
before cleaning 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.
!
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 door windows with hard objects
such as an ice scraper or ring. Doing so may
damage the windows.


300 OperationVehicle careCleaning the headlamps
Wipe the headlamp lens with a damp
sponge.Cleaning the headlamps

Wipe the headlamp lens with a damp
sponge.
Soft top care
Frequent cleaning reduces the dirt-repel-
lent effect of the soft top.
Intensive cleaning with Mercedes-Benz
care products for soft tops can help to re-
store the dirt-repellent effect.
!
Fold the windshield wiper arms back onto
the windshield before turning the SmartKey in
the starter switch.
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.
!
Only use windshield washer fluid suitable
for plastic lamp lenses. Unsuitable windshield
washer fluid may cause damage to the plastic
lenses of the headlamps.
Do not use


a dry cloth


abrasive products


solvents


cleaning agents containing solvents
You could otherwise scratch or damage the lens
surface.
!
Only use windshield washer fluid suitable
for plastic lamp lenses. Unsuitable windshield
washer fluid may cause damage to the plastic
lenses of the headlamps.
Do not use


a dry cloth


abrasive products


solvents


cleaning agents containing solvents
You could otherwise scratch or damage the lens
surface.
!
Incorrect cleaning and care can damage the
soft top or cause leaks. In this case contact an
authorized Mercedes-Benz Center, to have the
soft top inspected.
!
Remove bird droppings immediately. Bird
droppings are caustic and can cause leaks in the
soft top. Do not remove ice and snow with
sharp-edged devices.