towing MERCEDES-BENZ SLR CLASS 2005 Owners Manual

ContentsAt the gas station............................... 240
Refueling ...................................... 240
Check regularly and before
a long trip ..................................... 241
Engine compartment.......................... 243
Hood ............................................ 243
Engine oil...................................... 246
Transmission fluid level ................ 248
Coolant......................................... 249
Trunk ................................................. 250
Batteries....................................... 250
Windshield washer system and
headlamp cleaning system ........... 251
Tires and wheels ................................ 253
Important guidelines .................... 253
Tire care and maintenance ........... 254
Direction of rotation ..................... 256
Loading the vehicle ...................... 256
Recommended tire inflation
pressure ....................................... 262
Checking tire inflation pressure ... 264
Tire labeling .................................. 268
Load identification........................ 272
DOT, Tire Identification Number
(TIN) ............................................. 273Maximum tire load ....................... 274
Maximum tire inflation pressure .. 275
Uniform Tire Quality Grading
Standards (U.S. vehicles) ............. 276
Tire ply material ........................... 278
Tire and loading terminology ........ 278
Rotating tires ............................... 281
Anti-theft wheel nuts .................... 282
Winter driving .................................... 284
Winter tires* ................................ 284
Snow chains ................................. 285
Maintenance ...................................... 286
Clearing the maintenance
service indicator........................... 286
Maintenance service term
exceeded ..................................... 287
Calling up the service due date .... 287
Resetting the maintenance
service indicator........................... 288
Vehicle care ....................................... 289
Cleaning and care of the vehicle .. 289
Vehicle washing ........................... 290
Practical hints................................. 294
What to do if ... .................................. 296
Lamps in instrument cluster ........ 296
Lamp in center console................ 303
Vehicle status messages in the
multifunction display.................... 304
Symbol messages ........................ 309
Where will I find ...? ........................... 340
First aid kit ................................... 340
TIREFIT kit, electric air pump,
towing eye bolt and vehicle
literature portfolio ........................ 340
Locking/unlocking in an emergency . 342
Unlocking the vehicle................... 342
Replacing SmartKey batteries ........... 344
SmartKey ..................................... 345
Replacing bulbs ................................. 346
Front lamps.................................. 347
Rear lamps ................................... 347
Replacing the wiper blades................ 348
Removing wiper blades ................ 348
Installing wiper blades ................. 348

Contents
Flat tire .............................................. 349
Preparing the vehicle ................... 349
Sealing tires with TIREFIT kit ........ 349
Batteries ............................................ 354
Charging the batteries ................. 355
Towing the vehicle ............................. 357
Installing/reinstalling towing
eye bolt ........................................ 359
Points to bear in mind .................. 360
Transporting the vehicle............... 360
Fuses ................................................. 361
Technical data.................................. 362
Spare parts service............................. 364
Warranty coverage ............................. 365
Loss of Service and Warranty
Information Booklet ...................... 365
Identification labels ............................ 366
Engine number.............................. 366
Layout of poly-V-belt drive .................. 367
Engine ................................................ 368
Rims and tires .................................... 369
Mixed size tires ............................. 370
Winter tires* ................................. 371
Electrical system ................................ 372
Main dimensions ................................ 373
Weights .............................................. 374Fuels, coolants, lubricants, etc. .......... 375
Capacities ..................................... 375
Engine oils .................................... 377
Engine oil additives ....................... 377
Air conditioner refrigerant ............ 377
Brake fluid .................................... 378
Premium unleaded gasoline.......... 378
Fuel requirements......................... 378
Gasoline additives......................... 379
Coolants ....................................... 380
Windshield and headlamp
washer system.............................. 382
Technical terms............................... 384Index................................................. 390

85 Safety and Security
Driving safety systems
The SBC brake system is automatically ac-
tivated 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
If there is a malfunction in the SBC 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 357).
iIf the SBC brake system is activated 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 SBC pump. This is
normal and not an indication of a mal-
function. Pedal travel returns to normal
when you release the brake pedal and
the sound soon ceases.
If you experience the above while driv-
ing and the red brake warning lamp
(page 298) illuminates and/or warn-
ing messages appear in the multifunc-
tion display (
page 312), the brake
system is malfunctioning. Follow the in-
structions of the warning message(s)
and have the brake system checked
immediately.
Warning!
G
Have brake pad replacement and other work
on the SBC brake system carried out by
qualified technicians only. Contact your
Mercedes-Benz Center for further informa-
tion. The SBC brake system must be deacti-
vated prior to working on the system. High
pressure is intermittently built up in the sys-
tem as part of its automatic self-test. In ad-
dition, the system is automatically activated
when the vehicle is unlocked by remote con-
trol, when the driver or passenger door is
opened, when the SmartKey in the starter
switch is turned to position1, when the
brake pedal is depressed or when the park-
ing brake is released. Failure to deactivate
the system prior to maintenance will cause
brake pistons to extend and brake fluid to
leak, which may result in injuries (contu-
sions and acid burns). Extended brake
pistons may also cause injury.

92 Safety and SecurityAnti-theft systemsArming tow-away alarm
Lock your vehicle with the SmartKey.
The tow-away alarm is automatically
armed after about 30 seconds.Disarming tow-away alarm
To prevent triggering the tow-away alarm,
switch off the tow-away alarm feature
before towing the vehicle, or when parking
on a surface subject to movement, such as
a ferry or auto train.
The button is located on the lower part of
the center console.
1Tow-away alarm off button
2Indicator lamp

Switch off the ignition and remove the
SmartKey.

Press button 1.
Indicator lamp2 in button1 comes
on briefly.

Exit and lock your vehicle with the
SmartKey.
The tow-away alarm remains disarmed
until you lock your vehicle again.
iWhen you unlock your vehicle, the
tow-away protection disarms
automatically. The tow-away alarm
remains disarmed until you lock the
vehicle again.
iYou cannot disarm the tow-away alarm
while the ignition is switched on.

200 Controls in detailUseful featuresMap pocket in passenger footwell
Storage compartments Armrest storage compartment

Reach into the recess and lift armrest.
The armrest opens automatically.
Warning!
G
Do not place heavy or fragile objects, or ob-
jects having sharp edges, in the map pocket.
In an accident, during hard braking or sud-
den maneuvers, they could be thrown
around inside the vehicle, and cause injury
to vehicle occupants.
Warning!
G
To help avoid personal injury during a colli-
sion or sudden maneuver, exercise care
when stowing objects in the vehicle. Put lug-
gage or cargo in the trunk. Do not pile lug-
gage or cargo higher than the seat backs.
Do not place anything on the shelf below the
rear window.
Luggage nets cannot secure hard or heavy
objects.
Keep compartment lids closed. This will help
to prevent stored objects from being thrown
about and injuring vehicle occupants during
an accident.

211 Controls in detail
Useful features
Roadside Assistance button •
The Roadside Assistance button• is
located below the center armrest cover.
Press and hold the button (for longer
than two seconds)
A call to a Mercedes-Benz Roadside
Assistance dispatcher will be initiated.
The button will flash while the call is in
progress. The message Connecting call
will appear in the
multifunction display.
When the connection is established, the
message
Call connected
appears in the
multifunction display. The Tele Aid system
will transmit data generating the vehicle
identification number, model, color and lo-
cation (subject to availability of cellular
and GPS signals).A voice connection between the Roadside
Assistance dispatcher and the occupants
of the vehicle will be established.

Describe the nature of the need for as-
sistance.
The Mercedes-Benz Roadside Assistance
dispatcher will either dispatch a qualified
Mercedes-Benz technician or arrange to
tow your vehicle to the nearest authorized
Mercedes-Benz Center. For services such
as labor and/or towing, charges may ap-
ply. Refer to the Roadside Assistance Man-
ual for more information.
These programs are only available in the
USA:


Sign and Drive services: Services such
as jump start, a few gallons of fuel or
the replacement of a flat tire are ob-
tainable.
Warning!
G
If you feel at any way in jeopardy when in the
vehicle (e.g. smoke or fire in the vehicle, ve-
hicle in a dangerous road location), please
do not wait for voice contact after you have
pressed the emergency button. Carefully
leave the vehicle and move to a safe loca-
tion. The Response Center will automatically
contact local emergency officials with the
vehicle’s approximate location if they re-
ceive an automatic SOS signal and cannot
make voice contact with the vehicle occu-
pants.

230 OperationDriving instructionsPower assistance
Brakes
Warning!
G
The brake system requires electrical energy
for operation.
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 298) and
warning messages (
page 304) in the in-
strument cluster come on while driving. To
brake, the driver must then apply signifi-
cantly greater brake pedal pressure and de-
press the pedal much further to obtain the
expected braking effect. If necessary, apply
full pressure to the brake pedal. Brakes are
only applied to the front wheels. Stopping
distance is increased! If there is a malfunc-
tion in the SBC brake system, we recom-
mend that the vehicle be transported with
all wheels off the ground using flatbed or ap-
propriate 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
up to 30 miles (50 km) and at a speed not to
exceed 30 mph (50 km/h). For more infor-
mation, see “Towing the vehicle”
(page 357).
With the engine not running, there is no
power assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the ve-
hicle.
Warning!
G
After driving in heavy rain for some time
without applying the brakes or through wa-
ter deep enough to wet brake components,
the first braking action may be somewhat
reduced and increased pedal pressure may
be necessary to obtain expected braking ef-
fect. Maintain a safe distance from vehicles
in front.
Resting your foot on the brake pedal will
cause excessive and premature wear of the
brake pads.
It can also result in the brakes overheating
thereby significantly reducing their effec-
tiveness. It may not be possible to stop the
vehicle in sufficient time to avoid an acci-
dent.

259 Operation
Tires and wheels
Steps for determining correct load limit
The following steps have been developed
as required of all manufacturers under Title
49, Code of U.S. Federal Regulations, Part
575 pursuant to the “National Traffic and
Motor Vehicle Safety Act of 1966”.
Step 1 (Vehicles equipped with placard
Example A)
Locate the statement “The combined
weight of occupants and cargo should
never exceed XXX kg or XXX lbs.” on
your vehicle’s placard.
Step 1 (Vehicles equipped with placard
Example B)

Locate the heading “Vehicle Capacity
Weight” on your vehicle’s placard.
Step 2

Determine the combined weight of the
driver and passengers that will be
riding in your vehicle.Step 3

Subtract the combined weight of the
driver and passengers from XXX kilo-
grams or XXX lbs.
Step 4

The resulting figure equals the avail-
able amount of cargo and luggage load
capacity. For example, if the “XXX”
amount equals 1400 lbs. and there will
be five 150 lbs. passengers in your
vehicle, the amount of available cargo
and luggage load capacity is 650 lbs.
(1400-750 (5 x150) = 650 lbs.)
Step 5

Determine the combined weight of
luggage and cargo being loaded on the
vehicle. That weight may not safely
exceed the available cargo and luggage
load capacity calculated in step 4.Step 6 (if applicable)

If your vehicle will be towing a trailer,
load from your trailer will be trans-
ferred to your vehicle. Consult this
manual to determine how this reduces
the available cargo and luggage load
capacity of your vehicle (
page 261).
The following table shows examples on
how to calculate total and cargo load
capacities with varying seating configura-
tions and number and size of occupants.
The following examples use a load limit
of 1500 lbs. This is for illustration
purposes only. Make sure you are using
the actual load limit for your vehicle stated
on the vehicle’s placard (
page 257).

261 Operation
Tires and wheels
Certification label
Even after careful determination of the
combined weight of all occupants, cargo
and the trailer tongue load (if applicable)
(page 261) as to not exceed the permis-
sible load limit, you must make sure that
your vehicle never exceeds the Gross Vehi-
cle Weight Rating (GVWR) and the Gross
Axle Weight Rating (GAWR) for either the
front or rear axle. You can obtain the
GVWR and GAWR from the Certification la-
bel. The Certification Label can be found
on the driver’s door B-pillar, see “Technical
data” (
page 366).Gross Vehicle Weight Rating (GVWR): The
total weight of the vehicle, all occupants,
all cargo, and the trailer tongue load
(
page 261) must never exceed the
GVWR.
Gross Axle Weight Rating (GAWR): The to-
tal allowable weight that can be carried by
a single axle (front or rear).
To assure that your vehicle does not ex-
ceed the maximum permissible weight
limits (GVWR and GAWR for front and rear
axle), have the loaded vehicle (including
driver, passengers and all cargo and, if ap-
plicable, trailer fully loaded) weighed on a
suitable commercial scale.Trailer tongue load
The tongue load of any trailer is an impor-
tant weight to measure because it affects
the load you can carry in your vehicle. If a
trailer is towed, the tongue load must be
added to the weight of all occupants riding
and any cargo you are carrying in the
vehicle. The tongue load typically is ten
percent of the trailer weight and every-
thing loaded in it.
Your Mercedes-Benz has been designed
primarily to carry passengers and their
cargo. Mercedes-Benz does not recom-
mend trailer towing with your vehicle.

Practical hintsWhat to do if ...
Where will I find ...?
Locking/unlocking in an emergency
Replacing SmartKey batteries
Replacing bulbs
Replacing the wiper blades
Flat tire
Batteries
Towing the vehicle
Fuses