
171 Automatic transmission
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Upshift through 2nd gear only. For driving in 
mountainous regions or under extreme operating 
conditions. This gear selection will allow use of 
the engine’s braking power when descending 
steep grades.
Use this position, which makes maximum use of 
the engine’s braking effect, while descending 
very steep or lengthy downgrades and only at 
speeds below 40 mph (60 km/h).
Important!
With selector lever in position “D”, “4” or “3”, upshifting 
from 1st to 2nd to 3rd gear is delayed depending on 
vehicle speed and engine temperature. This allows the 
catalytic converter to heat up more q uickly to operating 
temperatures.
During the brief warm-up period this delayed upshift 
and increased engine noise might be perceived as a 
malfunction. However, neither the engine nor 
transmission are negatively affected by this mode of 
operation.
The delayed upshift is effective with vehicle speeds 
below 31 mph (50 km/h) at partial throttle and engine 
temperatures below 95°F (35°C).To avoid overrevving the engine when the selector lever 
is moved to a lower driving range, the transmission will 
not shift to a lower gear, if the engine’s speed limit 
would be exceeded. In this case there will be no 
downshift, even when the vehicle speed reaches the 
engine’s speed limit of that gear, e.g. by applying the 
service brakes. Continue driving in the usual manner. 
The transmission will then shift down automatically.
To prevent the engine from laboring at low RPM when 
driving uphill gradients or with your vehicle heavily 
loaded, the automatic transmission will downshift when 
necessary to maintain engine RPM within the best 
torque range.
Wa r n i n g !
On slippery road surfaces, never downshift in order 
to obtain braking action. This could result in drive 
wheel slip and reduced vehicle control. Your 
vehicle’ s ABS will not prevent this type of loss of 
control. 

182 Driving instructions
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Deep water
Caution!
Do not drive through flooded areas or water of unknown 
depth.
If you must drive through deep water, drive slowly to 
prevent water from entering the engine compartment or 
passenger compartment, being ingested by the air 
intake, possibly causing damage to electrical 
components or wiring, to engine or transmission that is 
not covered by the Mercedes-Benz Limited Warranty.
Winter driving instructions
The most important rule for slippery or icy roads is to 
drive sensibly and to avoid abrupt acceleration, braking 
and steering maneuvers. Do not use the cruise control 
system under such conditions.
When the vehicle is in danger of skidding, move 
selector lever to position “N”. Try to keep the vehicle 
under control by corrective steering action.
Road salts and chemicals can adversely affect braking 
efficiency. Increased pedal force may become necessary 
to produce the normal brake effect. We therefore 
recommend depressing the brake pedal periodically when traveling at length on salt-strewn roads. This can 
bring road salt impaired braking efficiency back to 
normal. A prerequisite is, however, that this be done 
without endangering other drivers on the road.
If the vehicle is parked after being driven on salt treated 
roads, the braking efficiency should be tested as soon as 
possible after driving is resumed while observing the 
safety rules in the previous paragraph.
Wa r n i n g !
If the vehicle becomes stuck in snow, make sure 
that snow is kept clear of the exhaust pipe and 
from around the vehicle with engine running. 
Otherwise, deadly carbon monoxide (CO) gases may 
enter vehicle interior resulting in unconsciousness 
and death.To assure sufficient fresh air ventilation, open a 
window slightly on the side of the vehicle not 
facing the wind. 

237 Battery
Te ch n ica l
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and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index Battery
Important!
Battery replacement information:
The maintenance-free battery is located in the trunk 
behind the right side cover panel.
The service life of the battery is dependent on its 
condition of charge. The battery should always be kept 
sufficiently charged, in order to last an optimum length 
of time.Therefore, we strongly recommend that you have the 
battery charge checked frequently, and corrected if 
necessary, especially if you use the vehicle less than 
approximately 200 miles (300 km) per month, 
mostly for short distance trips, or if it is not used for 
long periods of time.
Only charge a battery with a battery charger after the 
battery has been disconnected from the vehicle’s 
electrical circuit.
Always disconnect the battery negative lead first and 
connect last.
When removing and connecting the battery, always 
make sure that all electrical consumers are off and the 
key is in steering lock position 0. The battery must 
always be securely installed when the vehicle is in 
operation. During removal and installation always 
protect the disconnected battery positive (+) terminal 
with the cover attached to the battery.
While the engine is running the battery terminal clamps 
must not be loosened or detached, otherwise the 
generator and other electronic components will be 
damaged.
Wa r n i n g !
Failure to follow these instructions can result 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.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. 

239 Jump starting
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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. 

266 Cleaning and care of the vehicle
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Seat belts
The webbing must not be treated with chemical 
cleaning agents. Use only clear, lukewarm water and 
soap. Do not dry the webbing at temperatures above 
176°F (80°C) or in direct sunlight.
Headliner, shelf behind roll bars, and other hard 
plastic trim items
Pour Mercedes-Benz approved Interior Care onto soft 
lint-free cloth and apply with light pressure.
Soft top
Clean soft top with soft top raised and locked. Lower the 
soft top into the storage compartment only if the top is 
completely dry. If the top is kept in the storage 
compartment for a lengthy period, raise it and air it out 
with the windows down about every 4 months. Dry cleaning: 
Brush top (always from front to rear) with a soft-bristled 
brush. 
Wet cleaning: 
Brush the dry top. Wash with a mild detergent and an 
ample supply of lukewarm water by wiping with a soft-
bristled brush or sponge from front to rear. Then rinse 
thoroughly with clear water. 
If only parts of the top have been washed, wet the entire 
top and allow it to air-dry before lowering it into the 
storage compartment. 
Wipe the rear window with a cloth soaked with a mild, 
non-abrasive detergent, rinse and rub dry. 
Do not use sharp-edged instruments for the removal of 
ice and snow. 
Notes:
Never run the vehicle through an automatic car wash 
with the soft top in place or use a power washer to clean 
it, as you may damage the soft top material. 
Remove bird droppings immediately. The organic acid 
damages the material and causes the soft top to leak. 
Wa r n i n g !
Do not bleach or dye seat belts as this may severely 
weaken them. In a crash they may not be able to 
provide adequate protection. 

273 Technical data
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Model SL 500 (129.068)
1
SL 600 (129.076)
1
Engine113 1 2 0
Mode of operation 4-stroke engine,
gasoline injection4-stroke engine,
gasoline injection
No. of cylinders 8 12
Bore 3.82 in (97.00 mm) 3.50 in (89.00 mm)
Stroke 3.30 in (84.00 mm) 3.16 in (80.20 mm)
Total piston displacement 303 cu.in. (4966 cm
3) 365.4 cu.in. (5987 cm
3)
Compression ratio 8.8:1 10:1
Output acc. 
to SAE J 1349302 hp/5600 rpm
(225 kW/5600 rpm)389 hp/5200 rpm
(290 kW/5200 rpm)
Maximum torque acc. 
to SAE J 1349339ft.lb/2750 rpm
(460 Nm/2750 rpm)420ft.lb/3800 rpm
(570 Nm/3800 rpm)
Maximum engine speed 6000 rpm 6000 rpm
Firing order 1-5-4-2-6-3-7-8 1-12-5-8-3-10-6-7-2-11-4-9
Poly-V-belts length 2390 mm 2585 mm
1 The quoted data apply only to the standard vehicle. See an authorized Mercedes-Benz Center for the corresponding data of all special bodies 
and special equipment. 

276 Technical data
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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)