2004 MERCEDES-BENZ CLK55AMG COUPE oil

391 Technical data
Fuels, coolants, lubricants, etc.
Premium unleaded gasoline
Fuel requirements
Only use premium unleaded gasoline
meeting ASTM standard D 439:

The octane number (posted at the
p um p) m us t be 91 mi n. It i s an a vera ge
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 not to 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.
Gasoline additives
A major concern among engine manufac-
turers is carbon build-up caused by gaso-
line. Mercedes-Benz recommends only the
use of quality gasoline containing additives
that prevent the build-up of carbon depos-
its.
After an extended period of using fuels
without such additives, carbon deposits
can build up especially on the intake valves
and in the combustion area, leading to en-
gine performance problems such as:

Warm-up hesitation


Unstable idle


Knocking/pinging


Misfire


Power loss
Do not blend any specific fuel additives
with fuel. This only results in unnecessary
cost and may be harmful to the engine
operation.
!To maintain the engine’s durability and
performance, premium unleaded gaso-
l i n e m u s t b e u s e d . I f p r e m i u m u n l e a d e d
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 3 000 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.

392 Technical dataFuels, coolants, lubricants, etc.Damage or malfunctions resulting from
poor fuel quality or from blending specific
fuel additives are not covered by the
Mercedes-Benz Limited Warranty.Coolants
The engine coolant is a mixture of water
and anticorrosion / antifreeze, which
provides:

Corrosion protection


Freeze protection


Boiling protection (by increasing the
boiling point)
The cooling system was filled at the factory
with a coolant providing freeze protection
to approximately -22°F (-30°C) and corro-
sion protection.If the antifreeze mixture is effective
to -22°F (-30°C), the boiling point of the
coolant in the pressurized cooling system
is reached at approximately 266°F
(130°C).
The coolant solution must be used year
round to provide the necessary corrosion
protection and increase boil-over protec-
tion. Refer to Service Booklet for replace-
ment interval.
Coolant system design and coolant used
stipulate the replacement interval. The
replacement interval published in the
Service Booklet is only applicable if
MB 325.0 anticorrosion/antifreeze solu-
tion or other Mercedes-Benz approved
products of equal specification (see Facto-
ry Approved Service Products pamphlet)
are used to renew the coolant concentra-
tion or bring it back up to the proper level.To provide important corrosion protection,
the solution must be at least 45% anticor-
rosion/antifreeze (equivalent to freeze
protection to approx. -22°F [-30°C]). If you
use a solution that is more than 55% anti-
corrosion/antifreeze (freeze protection to
approx. -49°F [-45°C]), the engine temper-
ature will increase due to the lower heat
transfer capability of the solution. There-
fore, do not use more than this amount of
anticorrosion/antifreeze.
If the coolant level is low, water and MB
Anticorrosion /Antifreeze should be used
to bring it up to the proper level (have cool-
ing system checked for signs of leakage).
Please make sure the mixture is in accor-
dance with label instructions.
The water in the cooling system must meet
minimum requirements, which are usually
satisfied by normal drinking water. If you
are not sure about the water quality, con-
sult your authorized Mercedes-Benz
Center.

399 Technical terms
Engine number
The number set by the manufacturer
and placed on the cylinder block to
uniquely identify each engine pro-
duced.
Engine oil viscosity
Measurement for the inner friction (vis-
cosity) of the oil at different tempera-
tures. The higher the temperature an
oil can tolerate without becoming thin,
or the lower the temperature it can tol-
erate without becoming viscous, the
better the viscosity.
ESP
(E
lectronic S
tability Pr
ogram)
Improves vehicle handling and direc-
tional stability.
ETD
(E
mergency T
ensioning D
evice)
Device which deploys in certain frontal
and rear collisions exceeding the sys-
tem's threshold to tighten the seat
belts.
->SRSFSS
(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 gear selector le-
ver.
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 CD 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.

403 Index
A
ABS 23, 76, 397
Malfunction indicator lamp 306
Messages in display 315
Accelerator position,
automatic transmission 163
Accident
In case of 50
Activating
Air conditioning (cooling) 181
Air recirculation mode 178
Anti-theft alarm system 82
Automatic climate control 173
Central locking (control system) 149
Charcoal filter 179, 180
Distance warning function* 230
Distronic* 225, 226
Easy-entry/exit feature 150
ESP 80
Exterior headlamps 47
Exterior lamps 120
Exterior rear view
mirror parking position 168
Front and rear fog lamp 121, 122
Hazard warning flasher 123
Headlamps 47High beams 123
Ignition 31
Ignition with KEYLESS-GO* 33
Immobilizer 53, 81
Manual shift program
CLK 55 AMG 164
Rapid seat heating*
with seat ventilation* 115
Rapid seat heating*
without seat ventilation* 114
Rear window defroster 171
Residual heat 181
Seat heating*
with seat ventilation* 115
Seat heating*
without seat ventilation* 114
Seat ventilation* 113
Steering wheel gearshift
control (CLK 55 AMG) 164
Tow-away alarm 83
Trunk lid opening limiter*
(control system) 149
Windshield wipers 49Adding
Coolant 287
Engine oil 285
Additional turn signals 351
Adjustable air vents,
rear passenger compartment 182
Adjusting 34
Air distribution 176
Air volume 177
Backrest tilt 36
Exterior rear view mirror 39
Head restraint height 36
Head restraint tilt 36
Instrument cluster illumination 126
Interior rear view mirror 38
Mirrors 38
Multicontour seat* 112
Seat cushion depth 112
Seat cushion tilt 36
Seat fore and aft adjustment 35
Seat height 36
Seats 34
Steering column in/out 38
Steering column up/down 38
Steering wheel 37

407 Index
Center console 25
Lower part 26
PASS. AIRBAG OFF
indicator lamp 313
Upper part 25
Centigrade
Setting temperature units 142
Central locking
Automatic 105
From inside 106
Switch 106
Switching on/off
(control system) 149
Unlocking from inside 106
Central locking switch 106
Changing
Batteries (SmartKey
with KEYLESS-GO*) 346
Batteries (SmartKey) 345
Key setting 149
Changing CDs 199
Charcoal filter 179
Activating 179
Deactivating 180Charging
Vehicle battery 364
CHECK ENGINE malfunction
indicator lamp 308
Checking
Coolant level 286
Oil level 280, 283
Tire inflate pressure 280
Vehicle lighting 280
Child safety 68
Airbags 60
Infant and
child restraint systems 64, 68
LATCH child seat anchors 73
Child safety switch see
Blocking of rear window operation
Child seat anchors see
LATCH child seat anchors
Cigarette lighter 248Cleaning
Cup holder 303
Distronic* system sensor cover 301
Gear selector lever 303
Hard plastic trim items 303
Headlamps 166
Headliner 303
Instrument cluster 303
Leather upholstery 304
Light alloy wheels 303
Nubuck leather upholstery
(CLK 55 AMG) 304
Parktronic* system sensor 301
Plastic and rubber parts 304
Seat belts 303
Steering wheel 303
Upholstery 304
Windows 302
Windshield 49
Wiper blades 302
Wood trims 304
CLK 55 AMG
Manual shift program mode 164
Clock 23, 144

412 IndexE
Easy-entry/exit feature 107
Activating 150
Interrupting movement 150
Electrical fuses 372
Electrical system
Technical data 385
Electronic Stability Program see ESP
Emergency call system* 251
Emergency calls
Initiating an emergency call 254
Telephone* 208
With Tele Aid 252
Emergency operation
(Limp Home Mode) 165
Emergency operations
Closing sliding/pop-up roof* 348
Locking the vehicle 344
Opening sliding/pop-up roof* 348
Remote door unlock 258
Unlocking the vehicle 343
Emergency tensioning device see ETD
Emission control 276
Emission control label 378Ending
A call (telephone) 155
Engine
Compartment 281
Message in display 308
Starting 44
Starting with KEYLESS-GO* 44
Starting with the SmartKey 44
Technical data 380
Turning off 53
Engine cleaning 300
Engine compartment 281
Fuse box in 373
Hood 281
Engine malfunction
indicator lamp 23, 308
Engine number 399Engine oil 283, 390
Adding 285
Additives 390
Checking level 283
Consumption 283
Filler cap 285
Filler neck 285
Message in display 326
Messages in display 284
Viscosity 399
Engine oil level see Oil level
ESP 23, 78, 399
Messages in display 318
Switching off 79
Switching on 80
Warning lamp 310, 311
ETD 399
Safety guidelines 62
ETD (Emergency tensioning device) 67
Exterior lamp switch 119
Exterior rear view mirrors
Adjusting 39
Parking position for 151

419 Index
Menus 130
AUDIO 134
Control system 400
Distronic* 137, 224
In control system 132, 133
Malfunction memory 138
NAV 137
Settings menu 139
Standard display 134
Submenus 131
TEL* 154
Trip computer 152
Microphone
Hands-free microphone 27
Miles/kilometers in speedometer
Setting 142
Minispare wheel 340
Mounting 358
Removing 340
Storing 340
Technical data 384
Wheel bolts 342Mirrors
Activating exterior rear
view mirror parking position 168
Adjusting 38
Automatic antiglare
for rear view mirror 167
Exterior rear view mirror 39
Exterior rear view
mirror parking positions 151
Interior rear view mirror 38
Storing exterior rear view
mirror parking position 118
MON 279
MON (Motor Octane Number) 400
Mph or km/h in speedometer 142
Multicontour seat* 112
Multifunction display 129, 400
Selecting language 143
Standard display 133Multifunction display messages
ABS 315
BAS 316
Battery 320
Brake fluid 321
Brake pads 321
Check engine 308
Coolant 323
Coolant level 322
Cruise control 317
Display 325
Distronic* 317
Doors 325
Engine 308
Engine oil 326
ESP 318
Fog lamps, front 329
Fuel reserve tank 328
Gear selector lever 319
High beam headlamps 330
Hood 328
Key 328
Lamp sensor 330
Lamps 330

420 Index
License plate lamp 330
Low beam 330
Parking brake 321
SmartKey with KEYLESS-GO* 328
Steering gear oil level 335
Sunroof* 336
Symbol messages 320–336
Tele Aid 334
Telephone* 336
Text messages 315–319
Trunk 336
Washer fluid 336
Multifunction
steering wheel 24, 130, 400
Buttons 130N
Navigation system
Operating 137
See separate COMAND*
operating instructions
Night security illumination 121
Nubuck leather upholstery (CLK 55 AMG)
Cleaning 304O
Occupant safety 58
Airbags 59
Children and airbags 60
Children in the vehicle 68
Fastening the seat belts 40
Infant and child restraint systems 68
LATCH child seat anchors 73
Seat belts 40, 62
Odometer, main 23
Oil
Adding 285
Checking level 283
Consumption 283
Filler cap 285
Filler neck 285
Viscosity 399
Oil level
Checking 280
One-touch gearshifting 158
Canceling gear range limit 158
Downshifting 158
Upshifting 158