2004 MERCEDES-BENZ CL55AMG octane

13 Introduction
Operator’s Manual
Operating your vehicle outside the USA or Canada
If you plan to operate your vehicle in for-
eign countries, please be aware that:

service facilities or replacement parts
may not be readily available,


unleaded gasoline for vehicles with cat-
alytic converters may not be available;
the use of leaded fuels will damage the
catalysts,


gasoline may have a considerably low-
er octane rating, and improper fuel can
cause engine damage.Certain Mercedes-Benz models are avail-
able for delivery in Europe under our Euro-
pean Delivery Program. For details, consult
an authorized Mercedes-Benz Center or
write to:
In the USA:
Mercedes-Benz USA, LLC
European Delivery Department
One Mercedes Drive
Montvale, NJ 07645-0350
In Canada:
Mercedes-Benz Canada, Inc.
European Delivery Department
98 Vanderhoof Avenue
Toronto, Ontario M4G 4C9

258OperationAt the gas station
Replace the fuel cap by turning it to the
right.
You will hear when the fuel cap is tight-
ened.

Close the fuel filler flap.
Check regularly and before a long trip
1Windshield washer and headlamp
cleaning system
2Brake fluid
3Coolant level
Warning!
G
Overfilling of the fuel tank may create pres-
sure in the system which could cause a gas
discharge. This could cause the gas to spray
back out when removing the fuel pump noz-
zle, which could cause personal injury.
iOnly use premium unleaded gasoline
with a minimum Posted Octane Rating
of 91 (average of 96 RON / 86 MON).
Information on gasoline quality can
normally be found on the fuel pump.
More information on gasoline can be
found in the Factory Approved Service
Products pamphlet.iLeaving the engine running and the fuel
cap open can cause the ? malfunc-
tion indicator lamp to illuminate.
For more information, see “Practical
hints” (
page 294).
iOpening the hood, see (
page 260).


364 Technical dataEngine
EngineModel
CL 500 (215.375)
1
1The 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.
CL 55 AMG (215.374)
1
CL 600 (215.376)
1
Engine
113
113
275
Mode of operation
4-stroke engine, gasoline injec-
tion
4-stroke engine, gasoline injec-
tion
4-stroke engine, gasoline injec-
tion
No. of cylinders
8
8
12
Bore
3.82 in (97.00 mm)
3.82 in (97.00 mm)
3.23 in (82.00 mm)
Stroke
3.31 in (84.00 mm)
3.60 in (92.00 mm)
3.43 in (87.00 mm)
Total piston displacement
303.0 cu in (4966 cm
3)
331.8 cu in (5439 cm
3)
336.4 cu in (5513 cm
3)
Compression ratio
10:1
9:1
9:1
Output acc. to SAE J 1349
302 hp / 5600 rpm
2
(225 kW / 5600 rpm)
2Premium fuel required. Performance may vary with fuel octane rating.
493 hp / 6100 rpm
2
(368 kW / 6100 rpm)
493 hp / 5000 rpm
2
(368 kW / 5000 rpm)
Maximum torque
acc. to SAE J 1349
339 lb-ft / 2700 - 4250 rpm
(460 Nm / 2700 - 4250 rpm)
516 lb-ft / 2750–4000 rpm
(700 Nm / 2750–4000 rpm)
590 lb-ft / 1800–3500 rpm
(800 Nm / 1800–3500 rpm)
Maximum engine speed
6000 rpm
6500 rpm
5950 rpm
Firing order
1-5-4-2-6-3-7-8
1-5-4-2-6-3-7-8
1-12-5-8-3-10-6-7-2-11-4-9
Poly-V-belt
2380 mm
Belt one: 1289 mm
Belt two: 2462 mm
2335 mm

373 Technical data
Fuels, coolants, lubricants, etc.
Model
Capacity
Fuels, coolants, lubricants, etc.
Low temperature cooling system
CL 600
2.3 US qt (2.2 l)
MB 325.0 Anticorrosion / Antifreeze
Fuel tank
including a reserve of
CL 500
CL 55 AMG
CL 600
23.2 US gal (88.0 l)
2.9 US gal (11.0 l)
Premium unleaded gasoline:
Minimum Posted Octane 91
(Avg.of96RON/86MON)
Air conditioning system
R-134a refrigerant and special PAG
lubricant oil (never R-12)
Windshield washer and
headlamp cleaning system:
7.1 US qt (6.7 l)
MB Windshield Washer Concentrate
1
1Use MB Windshield Washer Concentrate “S” and water for temperatures above freezing or MB Windshield Washer Concentrate “S” and commercially available pre-
mixed windshield washer solvent / antifreeze for temperatures below freezing point. Follow suggested mixing ratios (page 379).

375 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
Use only 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.
Using mixtures of Ethanol and Methanol is
not allowed. Gasohol, which contains
10% Ethanol and 90% unleaded gasoline,
can be used.
These blends must also meet all other fuel
requirements, such as resistance to spark
knock, boiling range, vapor pressure, etc.
!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.

385 Technical terms
FSS
(F
lexible S
ervice S
ystem)
Service indicator in the multifunction
display that informs the driver when
the next vehicle maintenance service is
due.
Gear range
Number of gears which are available to
the automatic transmission for shifting.
The automatic gear shifting process
can be adapted to specific operating
conditions using the selector lever.
GPS
(G
lobal P
ositioning S
ystem)
Satellite-based system for relaying
geographic location information to and
from vehicles equipped with special re-
ceivers. Employs DVD digital maps for
navigation.Instrument cluster
The displays and indicator/warning
lamps in the driver’s field of vision, in-
cluding the tachometer, speedometer,
engine temperature and fuel gauge.
KEYLESS-GO*
System for entering and operating the
vehicle without the use of a SmartKey.
Kickdown
Depressing the accelerator past the
point of resistance shifts the transmis-
sion down to the lowest possible gear.
This very quickly accelerates the vehi-
cle and should not be used for normal
acceleration needs.
Line of fall
The direct line that an object moves
downhill when influenced by the force
of gravity alone. Lock button
Button on the door which indicates
whether the door is locked or un-
locked. Pushing the lock button down
on an individual door from inside will
lock that door.
Memory function
Used to store three individual seat,
steering wheel and exterior mirror posi-
tions for each SmartKey or SmartKey
with KEYLESS-GO*.
MON
(M
otor O
ctane N
umber)
The Motor Octane Number for gasoline
as determined by a standardized meth-
od. It is an indication of a gasoline's
ability to resist undesired detonation
(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.

387 Technical terms
RON
(R
esearch O
ctane N
umber)
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 AN-
TI-KNOCK INDEX.
Shift lock
When the vehicle is parked, this lock
prevents the transmission selector le-
ver from being inadvertently moved out
of positionP without SmartKey turned
and brake pedal depressed.
Speedshift
Steering wheel gearshift control and
manual shift program. In the manual
shift program mode you can change
the gears yourself on the steering
wheel or by using the selector lever. 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
(T
elematic 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.Telematics
A combination of the terms “telecom-
munications” and “informatics”.
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.
Traction
Force exerted by the vehicle on the
road via the tires.
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.).

402 Index
Storing exterior rear view mirror
parking positions 117
Storing key dependent settings 117
Menus 131
AUDIO 134
Distronic* 142, 201
In control system 132, 133
Malfunction memory 144
NAVI 141
Settings menu 145
Standard display 134
Submenus 131
TEL* 139
Trip computer 143
Microphone
Hands-free microphone 27
Miles/kilometers in speedometer
Setting 148
Mirrors
Activating exterior rear view mirror
parking position 168
Adjusting 40
Automatic antiglare for rear view
mirror 167
Exterior rear view mirror 40Exterior rear view mirror parking
position 156
Exterior rear view mirror parking
positions 156
Interior rear view mirror 40
Storing exterior rear view mirror
parking position 117
MON (Motor Octane Number) 258, 385
Mph or km/h in speedometer 148
Multicontour backrest* 111
Multifunction display 24, 129, 386
Selecting language 149
Standard display 133
Multifunction display messages
ABC 300
ABS 301
BAS 302
Brake fluid 305
Brake pads 305
Check engine 294
Coolant 306
Coolant level 306
Distronic* 302
Doors 309
Engine 294Engine oil level 310
Entry position 312
Hood 312
Key 312
Lamps 315
Parking brake 305
Selector lever 302
SmartKey with KEYLESS-GO* 313
Tele Aid 318
Telephone* 319
Tires 321, 324
Trunk 319
Washer fluid 319
Multifunction steering wheel 24, 130,
386
Buttons 130
N
Navigation system
Operating 141
See separate COMAND operating in-
structions
Night security illumination 121
Nubuck leather upholstery
Cleaning 290