2004 MERCEDES-BENZ SL55AMG key battery

358 Practical hintsBatteries
BatteriesYour vehicle is equipped with two
batteries:

The starter battery (located in the en-
gine compartment)


The battery for electrical consumers
(located in the trunk)
Starter battery in the engine compartment1Positive terminal
2Negative terminal
Warning!
G
Failure to follow these instructions can re-
sult in severe injury or death.
Never lean over batteries while connecting,
you might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.
!Never loosen or detach battery termi-
nal clamps while the engine is running
or the SmartKey is in the starter switch.
Otherwise the alternator and other
electronic components could be se-
verely damaged.
Have the starter battery checked regu-
larly by an authorized Mercedes-Benz
Center.
Refer to Service Booklet for mainte-
nance intervals or contact an autho-
rized Mercedes-Benz Center for further
information.

359 Practical hints
Batteries
Warning!
G
Do not place metal objects on the battery as
this could result in a short circuit.
Use leak-proof batteries only to avoid the
risk of acid burns in the event of an acci-
dent.
Warning!
G
The 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. The same applies if
battery is disconnected. 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. Brakes are only applied to the
front wheels. Stopping distance is in-
creased! Adjust your driving style according-
ly. For more information, see “SBC brake
system” (
page 81).
Warning!
G
With a disconnected battery

you will no longer be able to turn the
SmartKey in the starter switch and
pressing the KEYLESS-GO* start/stop
button on the gear selector lever will
have no effect


the gear selector lever will remain
locked in positionP

367 Practical hints
Towing the vehicle
Warning!
G
The 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. 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. Brakes are only applied to the
front wheels. Stopping distance is in-
creased! Adapt your driving style according-
ly. SBC brake system (
page 81).
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. Adapt your driving accordingly.
!When towing the vehicle with all wheels
on the ground, please note the follow-
ing:
With the automatic central locking acti-
vated and the SmartKey in starter
switch position2, or KEYLESS-GO*
start/stop button in position2, the ve-
hicle doors lock if the left front wheel
as well as the right rear wheel are turn-
ing at vehicle speeds of approx. 9 mph
(15 km / h) or more.
To prevent the vehicle door locks from
locking, deactivate the automatic cen-
tral locking (
page 105).
Towing of the vehicle should only be
done using the properly installed tow-
ing eye bolt. Never attach tow cable,
tow rope or tow rod to the vehicle chas-
sis, frame or suspension parts.
iThe gear selector lever will remain
locked in positionP and the SmartKey
will not turn in the starter switch if the
battery is disconnected or discharged.
See notes on the battery (
page 358)
or on jump starting (
page 363).

401 Technical terms
Retractable hardtop
Hardtop roof that can be opened and
closed at the push of a button and
stored in the trunk.
Roll bar
Occupant protection system which
consists of tubular steel sheathed in
plastic. The roll bar is lowered into the
car body during normal driving condi-
tions and raised automatically. It may
also be manually raised and lowered by
operating a button during critical driv-
ing situations.
RON
The Research Octane Number for gaso-
line as determined by a standardized
method. It is an indication of a gaso-
line's ability to resist undesired detona-
tion (knocking). The average of both
the MON (Motor Octane Number) and
RON (Research Octane Number) is
posted at the pump, also known as
ANTI-KNOCK INDEX.SBC
(S
ensotronic B
rake C
ontrol)
Electronically controlled hydraulic
braking system for increased braking
safety and comfort.
Shift lock
When the vehicle is parked, this lock
prevents the gear selector lever from
being inadvertently moved out of posi-
tion P without SmartKey turned and
brake pedal depressed.
SRS
(S
upplemental R
estraint S
ystem)
Seat belts, emergency tensioning de-
vice and airbags. Though independent
systems, they are closely interfaced to
provide effective occupant protection.Tele Aid System
(Tele
matic A
larm I
dentification on D
e--
mand)
The Tele Aid system consists of three
types of response: automatic and man-
ual emergency, roadside assistance
and information. Tele Aid is initially ac-
tivated by completing a subscriber
agreement and placing an acquain-
tance call.
The Tele Aid system is operational pro-
vided that the vehicle’s battery is
charged, properly connected, not dam-
aged and cellular and GPS coverage is
available.
Tightening torque
Force times lever arm (e.g. a lug
wrench) with which threaded fasteners
such as wheel bolts are tightened.
Tire speed rating
Part of tire designation; indicates the
speed range for which a tire is ap-
proved.

405 Index
Backrest supports
Lumbar region 109
Shoulder region 109
Backrest tilt 35
Backup lamp bulbs 332
Backup lamps 335
BAS 75, 77, 397
Batteries, SmartKey
Changing 328
Batteries, SmartKey with KEYLESS-GO*
Changing 329
Check lamp 98
Batteries, vehicle 260
Charging 361
Disconnecting 360
For electrical consumers 260, 324,
358
For starter 260, 358
Messages in display 297, 298
Reconnecting 361
Removing 361
Service 358Battery
For electrical consumers 324
Bi-Xenon* 397
Bi-Xenon* headlamps 397
Block heater 269
Brake fluid 252, 386, 389
Brake lamp bulb, high mounted 332
Brake lamp bulbs, left and right 332
Brake pads
Message in display 298
Brake system
Messages in display 302
Brakes 240
Warning lamp 284
Break-in period 238
Bulbs, replacing
Backup lamps 335
Brake lamps 332
Front lamps 331, 334
License plate lamps 336Parking lamps 335
Rear fog lamp 335
Standing lamps 335
Tail lamp assemblies 335
Turn signal lamps, front 334
Turn signal lamps, rear 335
C
CAC see Customer Assistance Center
CAN System 398
Capacities
Fuels, coolants, lubricants etc. 386
Catalytic converter 247
CD player
Operating 134
Center air vents 25
Center console
Lower part 26
Upper part 25
Centigrade
Setting temperature units 140

409 Index
Doors
Message in display 306
Opening from inside vehicle 99
Storage compartments 215
Downhill driving
Cruise control 194
Downshifting 156
Drinking and driving 239
Drive sensibly - save fuel 239
Driving 40, 45
Driving abroad 246
Driving hints
Distronic* 205
SBC brake system 83
Driving instructions 239
Driving off 242
Driving safety systems 75
ABS 75, 76
BAS 77
ESP 78Driving systems 193
ABC 207
Cruise control 193
Distronic* 196
Parktronic* 210
Vehicle level control 208
DTR see Distronic
E
Easy-entry/exit 148
Interrupting movement 107, 148
Messages in display 306
Easy-entry/exit feature 107
Electric air pump 324, 354
Electrical consumer battery 260
Electrical outlet 222
Electronic Stability Program see ESP
Emergency call system*
Initiating emergency call 226
Requirements 223
Emergency engine shut-down 55Emergency operation
Locking the vehicle 327
Lowering load assist 327
Unlocking storage
compartments 326
Unlocking the trunk 326
Unlocking the vehicle 325
Emergency operation (Limp Home
Mode) 165
Emergency Tensioning Device (ETD) 68,
398
Emission control 248
Emission control label 374
Engine
Compartment 253
Starting with KEYLESS-GO* 44
Starting with the SmartKey 43
Turning off 53
Turning off with KEYLESS-GO* 54
Turning off with the SmartKey 53
Engine number 398

414 IndexMaximum cooling MAXCOOL 174
Memory function 399
Storing exterior rear view mirror park-
ing positions 115
Storing key-dependent settings 149
Menus 128
AUDIO 132
Distronic* 135
Malfunction memory 136
NAVI 134
Standard display 132
TEL* 152
Trip computer 150
Microphone
Hands-free microphone 27
Miles/kilometers in speedometer 141
Minimum distance (Parktronic*) 211
Mirrors 38, 166
Activating exterior rear view mirror
parking position 167
Adjusting interior rear view mirror 38
Automatic antiglare for interior rear
view mirror 166Exterior rear view mirror parking
position 149
Exterior rear view mirrors 38
Storing exterior rear view mirror park-
ing position 115
Misfiring 49
MON 251, 399
Mph or km/h in speedometer 141
Multicontour backrest* 109
Multifunction display 127, 400
Left display field 23
Right display field 23
Selecting language 141
Standard display 127
Multifunction display messages
ABC 292
ABS 293
Battery 297, 298
Brake pads 298
Brake system 302
CHECK ENGINE 303Coolant 304
Coolant level 303, 305
Display malfunction 306
Doors 306
Easy-entry/exit feature 306
Fuel reserve tank 309
Hood 309
Luggage cover 322
Retractable hardtop 309
Roll bar 316
SBC brake system 299, 300
Seat belts 316
SmartKey 309
SmartKey with KEYLESS-GO* 311
Tele Aid 316
Telephone* 317
Tires 317
Trunk 322
Washer fluid 322
Multifunction steering wheel 24, 128,
400
Buttons 128

419 Index
Setting current speed
Cruise control 194
Setting last stored speed
Distronic* 202
Setting speed
Cruise control 195
Distronic* 201
Setting to last stored speed
Cruise control 195
Settings
Calling up Distronic* 135, 199
Convenience functions 148
Factory (SmartKey) 91
Resetting all (control system) 137
Selective (SmartKey) 91
Settings menu
Individual vehicle settings 137
Submenus 138
Shifting
Gear selector lever position 158Into optimal gear range (automatic
transmission) 156
Shoulder support
Seat adjustment 109
Side air vents 25
Side marker lamps 332, 335
Side windows
Automatic closing 182
Automatic opening 182
Closing 181, 182
Closing fully 182
Closing with KEYLESS-GO* 183
Express-close 182
Express-open 182
Opening 181, 182
Opening fully 182
Stopping 183
Synchronizing power windows 183
SL 55 AMG Kompressor
MANUAL shift program mode 163SmartKey 90
Changing the batteries 328
Checking the batteries 92
Closing retractable hardtop 189
Factory setting 91
Global locking 91
Global unlocking 91
Messages in display 309
Opening retractable hardtop 188
Positions in starter switch 31
Reprogramming 91
Restoring factory settings 92, 96
Selective setting 91
Starting the engine 43
Turning off the engine 53
Unlocking 30
SmartKey positions 31
SmartKey with KEYLESS-GO* 93
Changing the batteries 329
Checking the battery 98
Factory setting 96