2004 MERCEDES-BENZ SL55AMG light

381 Technical data
Rims and tires
SL 55 AMG
Front axle:Rims (light alloy)
81/2 J x 18
Wheel offset
1.18 in (30 mm)
Summer tires (radial-ply tires)
255/40 R18 95W
or
255/40 R18 95Y
Rear axle:Rims (light alloy)
91/2 J x 18
Wheel offset
1.30 in (33 mm)
Summer tires (radial-ply tires)
285/35 R18 97W
1
or
285/35 R18 97Y
1
1Must not be used with snow chains.

389 Technical data
Fuels, coolants, lubricants, etc.
Brake fluid
During vehicle operation, the boiling point
of the brake fluid is continuously reduced
through the absorption of moisture from
the atmosphere. Under extremely strenu-
ous operating conditions, this moisture
content can lead to the formation of bub-
bles in the system, thus reducing the sys-
tem’s efficiency.
Therefore, the brake fluid must be re-
placed every two years, preferably in the
spring.
Only brake fluid approved by
Mercedes-Benz is recommended. Your au-
thorized Mercedes-Benz Center will pro-
vide you with additional information.
Premium unleaded gasoline
Fuel requirements
Only use premium unleaded fuel:

The octane number (posted at the
pump) must be 91 min. It is an average
of both the Research (R) octane num-
ber and the Motor (M) octane number:
(R+M) / 2). This is also known as the
ANTI-KNOCK INDEX.
Unleaded gasoline containing oxygenates
such as Ethanol, IPA, IBA and TBA can be
used provided the ratio of any one of these
oxygenates to gasoline does not exceed
10%; MTBE must not exceed 15%.
The ratio of Methanol to gasoline must not
exceed 3% plus additional cosolvents.
!To maintain the engine’s durability and
performance, premium unleaded gaso-
line must be used. If premium unleaded
is not available and low octane fuel is
used, follow these precautions:

have the fuel tank only partially
filled with unleaded regular and fill
up with premium unleaded as soon
as possible


avoid full throttle driving and abrupt
acceleration


do not exceed an engine speed of
3000 rpm if the vehicle is loaded
with a light load such as two per-
sons and no luggage


do not exceed
2/3 of maximum ac-
celerator pedal position if the vehi-
cle is fully loaded or operating in
mountainous terrain

397 Technical terms
ABS
(A
ntilock B
rake S
ystem)
Prevents the wheels from locking up
during braking so that the vehicle can
continue to be steered.
ABC
(A
ctive B
ody C
ontrol)
Active, computer-controlled system
that hydraulically adjusts the suspen-
sion at all four wheels in response to
various driving situations.
Alignment bolt
Metal pin with thread. The alignment
bolt, or centering bolt, is an aid used
when changing a tire to align the wheel
with the wheel hub.BabySmart
TM1
airbag deactivation
system
This system detects if a special system
compatible child restraint seat is in-
stalled on the front passenger seat. The
system will automatically deactivate
the passenger front airbag when such a
seat is properly installed (indicator
lamp 7 on the glove box comes on).
See your authorized Mercedes-Benz
Center for availability.
BabySmart
TM compatible child seats
Special restraint system for children.
The sensor system for the passenger
seat prevents deployment of the pas-
senger front airbag if a BabySmart
TM
compatible child seat is installed.BAS
(B
rake A
ssist S
ystem)
System for potentially reducing braking
distances in emergency braking situa-
tions. The system is activated when it
senses an emergency based on how
fast the brake is applied.
Bi-Xenon headlamps*
Headlamps which use an electric arc as
the light source and produce a more in-
tense light than filament headlamps.
Bi-Xenon headlamps produce low
beam and high beam.
CAC
(C
ustomer A
ssistance C
enter)
Mercedes-Benz customer service cen-
ter, which can help you with any ques-
tions about your vehicle and provide
assistance in the event of a break-
down.
1BabySmart
TM
is a trademark of Siemens
Automotive Corp.

402 Technical termsTraction
Force exerted by the vehicle on the
road via the tires.
Vehicle level control
The ground clearance of the vehicle is
automatically controlled according to a
selected setting and speed. The driver
can choose manually within a range of
ground clearance, for example on very
rough roads.
VIN
(V
ehicle I
dentification N
umber)
The number set by the manufacturer
and placed on the body to uniquely
identify each vehicle produced.Voice control system*
Voice control system for car phones,
portable cell phones and audio sys-
tems (radio, CD, etc.).
Wind screen
Screen for deflecting wind from the ve-
hicle interior when the hardtop is low-
ered.
Xenon headlamps
Headlamps which use an electric arc as
the light source and produce a more in-
tense light than filament headlamps.

406 IndexCentral locking
Automatic 105
Central locking switch 105
Switching on/off (control
system) 146
Unlocking from inside 105
Central locking switch 25
Central unlocking switch 25
Changing
Batteries (SmartKey with
KEYLESS-GO*) 329
Batteries (SmartKey) 328
SmartKey setting 91
SmartKey with KEYLESS-GO*
settings 96
Vehicle level 209
Charging
Vehicle batteries 361
CHECK ENGINE
Messages in display 303
CHECK ENGINE malfunction indicator
lamp 23, 285Checking
Coolant level 258
Oil level 252, 255
Tire inflate pressure 252
Vehicle lighting 252
Child safety
Airbags 60
Automatic child seat recognition 72
Infant and child restraint systems 58
Cigarette lighter 25, 219
Cleaning
Cup holder 279
Gear selector lever 279
Hard plastic trim items 279
Headlamps 168
Headliner 279
Leather upholstery 280
Plastic and rubber parts 280
Seat belts 279
Steering wheel 279
Upholstery 280
Windshield 47
Wood trims 280Clock 21
Closing
Hood 254
Power window with
KEYLESS-GO* 183
Retractable hardtop (SmartKey) 189
Retractable hardtop (switch) 186
Side windows 182
Sunshade 192
Trunk lid 102
Windows 181
Windows with KEYLESS-GO* 183
Cockpit 398
Collapsible tire 398
COMAND 25, 398
COMAND, radio and telephone 247
Combination switch 21, 47, 120, 121
Comfort driving
Transmission program mode 161
Consumer information 394

407 Index
Control system 127, 130, 398
AUDIO menu 132
Convenience submenu 148
Distronic* menu 135
Functions 128
Instrument cluster submenu 140
Lighting submenu 142
Malfunction memory menu 136
Menus 128
Multifunction display 127
Multifunction steering wheel 128
NAVI menu 134
Standard display menu 127, 132
Submenus 131
TEL* menu 152
Trip computer menu 150
Vehicle submenu 145
Convenience feature 189
Coolant 391
Adding 259
Anticorrosion/antifreeze
quantity 392Checking level 258
Messages in display 303, 304, 305
Temperature 249
Temperature gauge 124
Temperature warning lamp 23
Warning lamp 286
Coolant temperature gauge 23
Cooling see Air conditioner
Courtesy lighting 123
Cruise control 193, 398
"Resume" function 195
Canceling 194
Driving downhill 194
Driving uphill 194
Fine adjustment 195
Setting a higher speed 195
Setting a lower speed 195
Setting current speed 194
Setting to last stored speed 195Cruise control lever 21, 193
For cruise control 193
For Distronic* 200
Cup holder 25, 214
Cleaning 279
Customer Assistance Center 397
D
Daytime running lamp mode 119
Setting 142
Deactivating
Air conditioning (cooling) 179
Air recirculation mode 176
Alarm 86
Anti-theft alarm system 86
Automatic climate control 179
Central locking (control system) 146
Cruise control 194
Distance warning function* 204
Distronic* 202
Engine with KEYLESS-GO* 54

408 Index
Engine with the SmartKey 53
ESP 79
Exterior lamps 117
Hazard warning flasher 121
Headlamps 52, 117
Immobilizer 84
Interior light delayed switch-off 145
Parktronic* 212
Rear window defroster 177
Residual heat 178
Seat heating 110, 111
Seat ventilation* 113
Tow-away alarm 87
Deep water see Standing water
Defrosting 175
Delayed switch-off
Exterior lamps 143
Interior lighting 145
Digital clock 21
Direction of rotation (tires) 263Displays
Distronic* 198
Messages 256, 306
Parktronic* 211
Service indicator 271
Distance to empty (range)
Calling up 152
Distance warning function* 204
Activating 204
Deactivating 204
Intermittent warning sound 204
Symbol 135, 199
Distance warning function* switch 26
Distronic indicator lamp* 23
Distronic* 196, 398
"Resume" function 202
Activating 200
Calling up settings 135, 199
Cleaning system sensors 277
Cruise control lever 200Deactivating 202
Deceleration 199
Decreasing time interval 204
Displays 198
Distance warning function 204
Distance warning function switch 26
Driving hints 205
DTR warning lamp 198
Increasing time interval 203
Intermittent signal tone 198
Setting a higher speed 201
Setting a slower speed 202
Setting distance 26
Setting last stored speed 202
Setting speed 201
System sensor cover 277
Warning and indicator lamps 198
Distronic* warning lamp 23
Door control panel 21, 28
Door handle 28

412 IndexI
Identification labels 374
Ignition 31, 33
Switching on 31
Immobilizer 84
Activating 53, 84
Deactivating 84
Indicator lamps see Lamps, indicator and
warning
Infant and child restraint systems 70
Instrument cluster 22, 124, 399
Select language 141
Instrument lighting 124
Interior lighting 122
Automatic control 122
Delayed switch-off 145
Interior lighting control 27
Manual operation 123
Intermittent wiping 48J
Jack 324
K
Key, Mechanical 325
Key-dependent memory 149
KEYLESS-GO* 399
Closing power window with 183
Closing windows with 183
Important notes 94
Key positions 32
Starting the engine 44
Turning off the engine 54
KEYLESS-GO* start/stop button 25, 33,
44
Keys
Loss of 93
Kickdown 162, 399
Kilometers/miles in speedometer 141
Kneebag 64L
Labels, identification 374
Lamp bulbs, exterior 331
Lamps, exterior
Delayed switch-off 143
Exterior lamp switch 21, 46
Front 332
Headlamps 276
Light sensor 313
Replacing bulbs for rear 332, 335
Switching off 117
Switching on 117
Lamps, indicator and warning
ABS 23, 283
ABS/ESP 282
AIRBAG OFF 290
Airbag Off 64
Brakes 284
CHECK ENGINE 285