257 Operation
Engine compartment
If there is excess engine oil with the engine
at normal operating temperature, the
following message will appear:Engine oil level
Reduce oil level!
Have excess oil siphoned or drained
off. Contact an authorized
Mercedes-Benz Center
For more information on messages in the
display concerning engine oil, see the
“Practical hints” section (
page 307). Adding engine oil
SL 500 and SL 55 AMG1Filler capSL 6001Filler cap
Unscrew filler cap1 from filler neck.
!Excess oil must be siphoned or drained
off. It could cause damage to the
engine and catalytic converter not
covered by the Mercedes-Benz Limited
Warranty.
!Only use approved engine oils. For a
listing of approved engine oils, refer to
the Factory Approved Service Products
pamphlet in your vehicle literature port-
folio.
In addition, check the oil filler cap for
important information pertaining to the
engine oil needing to meet a specific
Mercedes-Benz specification (e.g. MB
229.5). If such information is printed
on the oil filler cap, only use an engine
oil from the list of approved engine oils
in the Factory Approved Service Prod-
ucts pamphlet that meets the specifi-
cation indicated on the oil filler cap.
Using engine oils of other specification
may cause the FSS to incorrectly deter-
mine the next service interval and will
result in engine damage not covered by
the Mercedes-Benz Limited Warranty.
258 OperationEngine compartment
Add engine oil as required. Be careful
not to overfill with oil.
Be careful not to spill any oil when adding.
Avoid environmental damage caused by oil
entering the ground or water.
Screw filler cap1 back on filler neck.
For more information on engine oil, see the
“Technical data” section (
page 386) and
(
page 388).
Transmission fluid level
The transmission fluid level does not need
to be checked. If you notice transmission
fluid loss or gear shifting malfunctions,
have an authorized Mercedes-Benz Center
check the automatic transmission. Oil level in the ABC system
The oil level in the ABC system does not
need to be checked. If there is visible oil
loss or if malfunction messages appear in
the display, have an authorized
Mercedes-Benz Center check the ABC
system.
Coolant
!Excess oil must be siphoned or drained
off. It could cause damage to the
engine and catalytic converter not
covered by the Mercedes-Benz Limited
Warranty.
Warning!
G
In order to avoid any possibly serious burns:
Use extreme caution when opening the
hood if there are any signs of steam or
coolant leaking from the cooling system,
or if the coolant temperature gauge indi-
cates that the coolant is overheated.
Do not remove pressure cap on coolant
reservoir if engine temperature is above
158°F (70°C). Allow engine to cool
down before removing cap. The coolant
reservoir contains hot fluid and is under
pressure.
Using a rag, slowly open the cap approx-
imately
1/2 turn to relieve excess pres-
sure. If opened immediately, scalding
hot fluid and steam will be blown out un-
der pressure.
Do not spill antifreeze on hot engine
parts. Antifreeze contains ethylene gly-
col which may burn if it comes into con-
tact with hot engine parts.
272 OperationMaintenanceService term exceeded
If you have exceeded the suggested ser-
vice term, you will see the following mes-
sage in the right multifunction display:Service A exceeded by xx days
Service A exceeded by xx miles (km)An acoustic signal will also sound.
The Mercedes-Benz Center will reset the
service indicator following a completed
service.
Calling up the service indicator
Switch on ignition.
The standard display of the control sys-
tem appears (
page 127).
Press button k or j on the
multifunction steering wheel until the
FSS indicator service symbol 9 or
´ appears in the left multifunction
display and the service deadline ap-
pears in the right multifunction display.
Resetting the service indicator
In the event that the service on your vehi-
cle is not carried out by an authorized
Mercedes-Benz Center, you can reset the
service indicator yourself.
Switch on ignition.
The standard display of the control sys-
tem appears (
page 127).
Press button k or j on the
multifunction steering wheel until the
FSS indicator service symbol 9 or
´ appears in the left multifunction
display and the service deadline ap-
pears in the right multifunction display.
Press the reset button for about four
seconds.
The following message appears in the
tachometer:Service Interval...
Reset:
R-Button 3 Sec.
iIf the battery supplying the vehicle’s
electrical consumers is disconnected,
the days of disconnection will not be in-
cluded in the count shown by the ser-
vice indicator. To arrive at the true
service deadline, you will need to sub-
tract these days from the days shown
in the service indicator.
Do not confuse the service indicator
with the engine oil level indicator :.
307 Practical hints
What to do if …
Left display
Right display
Possible cause
Suggested solution
:
USA only:Add 1 qt engine oil
at next refuelingCanada only:Add 1 l engine oil
at next refueling
The engine oil level is too low.
Add engine oil (
page 257) and check the
engine oil level (page 255).
Engine oil level
Stop, engine off!
There is no oil in the engine. There
is a danger of engine damage.
Carefully bring the vehicle to a halt as soon as
possible.
Turn off the engine.
Add engine oil (
page 257) and check the
engine oil level (page 255).
Engine oil level
Reduce oil level!
You have added too much engine
oil. There is a risk of damaging the
engine or the catalytic converter.
Have excess oil siphoned or drained off. Ob-
serve all legal requirements with respect to its
disposal.
308 Practical hintsWhat to do if …When the message
Add 1 qt engine oil
at next refueling (Canada:
1l
) appears
while the engine is running and at
operating temperature, the engine oil level
has dropped to approximately the
minimum level.When this occurs, the warning will first
come on intermittently and then stay on if
the oil level drops further.
If no oil leaks are noted, continue to drive
to the nearest service station where the
engine oil should be topped to the required
level with an approved oil.
Left display
Right display
Possible cause
Suggested solution
:
Engine oil
Visit workshop!
It may be that there is water in the
engine oil.
Have the engine oil checked.
Engine oil level
Visit workshop!
The engine oil has dropped to a crit-
ical level.
Check the engine oil level (
page 255) and
add oil as required (
page 257).
If you must add engine oil frequently, have the
engine checked for possible leaks.
The measuring system is malfunc-
tioning.
Have the measuring system checked by an
authorized Mercedes-Benz Center.
!The engine oil level warnings should
not be ignored. Extended driving with
the symbol displayed could result in
serious engine damage that is not
covered by the Mercedes-Benz Limited
Warranty.
386 Technical dataFuels, coolants, lubricants, etc.
Fuels, coolants, lubricants, etc.CapacitiesVehicle components and their respective
lubricants must match. Therefore use only
brands tested and approved by Mercedes Benz. Please refer to the Facto-
ry Approved Service Products pamphlet, or
inquire at your Mercedes-Benz Center.
Model
Capacity
Fuels, coolants, lubricants, etc.
Engine with oil filter
SL 500
SL 600
SL 55 AMG
7.9 US qt (7.5 l)
8.5 US qt (8.0 l)
9.0 US qt (8.5 l)
Approved engine oils
Automatic transmission
SL 500
SL 600
SL 55 AMG
9.5 US qt (9.0 l)
8.0 US qt (7.5 l)
9.1 US qt (8.6 l)
MB Automatic Transmission Oil
Rear axle
SL 500
SL 600
SL 55 AMG
1.5 US qt (1.4 l)
1.3 US qt (1.2 l)
1.5 US qt (1.4 l)
Hypoid gear oil SAE 85 W 90
Hydraulic system for active body control (ABC)
approx. 4.3 US qt (4.0 l)
MB Hydraulic Fluid
Power steering
approx. 1.1 US qt (1.0 l)
MB Power Steering Fluid (Pentosin
CHF 11S)
Front wheel hubs
approx. 3.0 oz (85 g) each
High temperature roller bearing grease
Brake system
1.1 US qt (1.05 l)
MB Brake Fluid (DOT 4+)
388 Technical dataFuels, coolants, lubricants, etc.Engine oils
Engine oils are specifically tested for their
suitability in our engines. Therefore, use
only engine oils approved by
Mercedes-Benz. Information on approved
products is available in the
Factory Approved Service Products pam-
phlet, or at an authorized Mercedes-Benz
Center.
Please follow FSS recommendations for
scheduled oil changes. Failure to do so
could result in engine damage not covered
by the Mercedes-Benz Limited Warranty.
Engine oil additives
Do not blend oil additives with engine oil.
They may damage the engine.
Damage or malfunctions resulting from
blending oil additives are not covered by
the Mercedes-Benz Limited Warranty.Air conditioner refrigerant
R-134a (HFC) refrigerant and special PAG
lubricating oil are used in the air condition-
er system.
Never use R-12 (CFC) or mineral-based lu-
bricating oil. Otherwise damage to the
system will occur.
!Always check the oil filler cap
(page 257) for important informa-
tion pertaining to the engine oil need-
ing to meet a specific Mercedes-Benz
specification (e.g. MB 229.5). If such
information is printed on the oil filler
cap, only use an engine oil from the list
of approved engine oils in the Factory
Approved Service Products pamphlet
that meets the specification indicated
on the oil filler cap.
Using engine oils of other specification
may cause the FSS to incorrectly deter-
mine the next service interval and will
result in engine damage not covered by
the Mercedes-Benz Limited Warranty
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