Page 243 of 302

239 Jump starting
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Jump startingImportant!
A discharged battery can freeze at approx. +14°F
(–10°C). In that case, it must be thawed out before
jumper cables are used. Attempting to jump start a
frozen battery can result in it exploding, causing
personal injury.
Jumper cable specifications:
• Minimum cable cross-section of 25 mm
2 or approx.
2AWG
• Maximum length of 11.5 ft. (3.5 m).
If the battery is discharged, the engine should be started
with jumper cables and the (12 V) battery of another
vehicle.
Only use 12 V battery to jump start your vehicle. Jump
starting with more powerful battery could damage the
vehicle’s electrical systems, which will not be covered
by the Mercedes-Benz Limited Warranty.
The battery is located in the trunk behind the right side
cover panel.
Wa r n i n g !
Failure to follow these directions will cause
damage to the electronic components, and can lead
to a battery explosion and severe injury or death.Never lean over batteries while connecting or jump
starting, 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 very explosive. Keep flames or
sparks away from battery, avoid improper
connection of jumper cables, smoking etc.Read all instructions before proceeding.
Page 244 of 302

240 Jump starting
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Proceed as follows:
1. Position the vehicle with the charged battery so that
the jumper cables will reach, but never let the
vehicles touch. Make sure the jumper cables do not
have loose or missing unsulation.
2. On both vehicles:
• Turn off engine and all lights and accessories,
except hazard warning flashers or work lights.
• Apply parking brake and shift selector lever to
position “P”.
Important!
3. Clamp one end of the first jumper cable to the
positive (+) terminal of the discharged battery and
the other end to the positive (+) terminal of the
charged battery. Make sure the cable clamps do not
touch any other metal parts.
4. Clamp one end of the second jumper cable to the
grounded negative (-) terminal of the charged
battery and the final connection to the negative (-)
terminal of the discharged battery.Important!
5. Start engine of the vehicle with the charged battery
and run at high idle. Make sure the cables are not
on or near pulleys, fans, or other parts that will
move when the engine is started. Allow the
discharged battery to charge for a few minutes. Start
engine of the disabled vehicle in the usual manner.
6. After the engine has started, remove jumper cables
by exactly reversing the above installation
sequence, starting with the last connection made
first. When removing each clamp, make sure that it
does not touch any other metal while the other end
is still attached.
Note:
If engine does not run after several unsuccessful
starting attempts, have it checked at the nearest
authorized Mercedes-Benz Center.
Excessive unburned fuel may damage the catalytic
converter.
Page 256 of 302
252 Remote control
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Changing batteries in the remote control
Checking batteries
If the transmit buttonŒ or‹ is pressed longer
than 1 second, the battery check lamp in the transmitter
eye (1) lights up briefly – indicating that the batteries
are in order.
Change batteries if the battery check lamp does not light
up briefly.Changing batteries
Unfold master key from holder by pressing key release
button (2). Pull off battery cover (3).
Page 257 of 302
253 Remote control
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Change batteries, inserting new ones with plus (+) side
facing up.
Press battery cover onto housing until locked in place.Important!
Batteries contain materials that can harm the
environment if disposed of improperly. Recycling of
batteries is the preferred method of disposal. For
disposal, please follow manufacturer’s recommendation
on battery package.
Replacement Battery:
Lithium, type CR 2025 or equivalent.
Synchronizing remote control
The system may have to be resynchronized, if the
transmitter is without voltage for several minutes.
To synchronize system, aim transmitter eye at vehicle
and briefly press transmit buttonŒ or‹ twice.
Within approx. 30 seconds insert key in steering lock
and turn it to position 2.
The remote control should once again be operational.
Page 264 of 302
260 Manual release of fuel filler flap
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Manual release of fuel filler flap
The manual release knob is located behind cover (2) in
the right slide trunk panel.
In case the central locking system does not release the
fuel filler flap:
1. Unscrew wing nut (1)
2. Pull panel (2) away from trunk wall.
3. Pull the manual release knob (3) (arrow) while
simultaneously opening the fuel filler flap.Trunk lamp
1Switching off
2Switching on
Switch off trunk lamp if the trunk is to remain open for
a long period of time. This prevents the vehicle battery
from being discharged.
When the trunk lid is closed, the switch will reset and
turn on the lamp the next time the lid is opened.
Page 280 of 302
276 Technical data
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Electrical system Weights
(see certification tag)
Main dimensions Generator (alternator) 14 V/150 A
Battery 12V/100 Ah
Starter motor
SL 500:
SL 600:12 V / 1. 7 k W
12V/2.2 kW
Spark plugs
SL 500:
SL 600:
Electrode gap
Tightening torqueBosch F 8 DPER
Beru 14 FGH 8 DPUR X 2
Beru 14 FGH 8 DPUR X 2
0.039 in (1.0 mm)
15 – 22 ft.lb (20 – 30 Nm)Hardtop load max. 66 lb (30 kg)
Trunk load max. 220 lb (100 kg)
Overall vehicle length 177.1 in (4499 mm)
O ve r a l l v e h i c l e w i d t h 71.3 in ( 1812 m m )
Overall height 51.3 in (1303 mm)
Wheel base 99.0 in (2515 mm)
Track, front 60.4 in (1535 mm)
Track, rear 60.0 in (1523 mm)
Page 290 of 302

286 Index
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
BBabySmart
TM airbag deactivation system ..................... 58
Self-test ......................................................................... 58
Backrest ............................................................................. 48
BAS (Brake assist system) ............................................ 188
Malfunction indicator lamp .....................................207
Battery .............................................................................237
Charge indicator lamp .............................................. 211
Recycling ....................................................................238
Brake assist system (BAS) ............................................ 188
Brake fluid ......................................................................279
Capacity ......................................................................277
Brake pad wear indicator lamp ....................................205
Brake warning lamp ......................................................205
CCatalytic converter ........................................................ 163
Central locking system ................................................... 29
Automatic central locking ......................................... 37
Central locking switch ............................................... 36
General notes ............................................................... 33
Locking and unlocking
with remote control ............................................... 30
Remote control ..................................................... 28, 29Remote control – changing batteries .................... 252
Vehicle keys .................................................................28
Changing wheels ............................................................231
Charge indicator lamp ................................................... 211
Check engine
malfunction indicator lamp .................................... 204
Check regularly and before a long trip ...................... 202
Checking engine oil level ............................................ 222
Checking engine oil level indicator .............................. 82
Cleaning and care of the vehicle ................................ 262
Clock .................................................................................. 79
Combination switch .........................................................86
Console storage compartments ....................................127
Consumer information ................................................. 283
Control and operation of
radio transmitters ..................................................... 154
Coolant
Adding coolant .......................................................... 225
Anticorrosion/antifreeze quantity ........................ 282
Checking level .......................................................... 224
Coolants ......................................................................281
Low engine coolant level
warning lamp ....................................................... 209
Temperature gauge .....................................................78
Cruise control ................................................................. 184
Cup holder .............................................................. 128, 265