413 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 op-
eration.
!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.
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414 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.
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421 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.Head-thorax airbag
Installed in the driver and the front pas-
senger seat, these airbags protect oc-
cupants during side impact collisions
exceeding a preset threshold. Unlike
normal side airbags, head-thorax air-
bags are also designed to provide pro-
tection for the head area.
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.
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427 Index
A
ABS 23, 77, 419
Malfunction indicator lamp 312
Messages in display 321
Accelerator position,
automatic transmission 163
Accident
In case of 51
Activating
Air conditioning (cooling) 181
Air recirculation mode 178
Anti-theft alarm system 83
Automatic climate control 173
Central locking (control system) 149
Charcoal filter 179
Distance warning function* 238
Distronic* 233, 234
Easy-entry/exit feature 150
ESP 81
Exterior headlamps 47
Exterior lamps 120
Exterior rear view
mirror parking position 169
Front and rear fog lamp 121, 122
Hazard warning flasher 123
Headlamps 47High beams 123
Ignition 31
Ignition with KEYLESS-GO* 33
Immobilizer 54, 82
Manual shift programm
CLK 55 AMG 164
Rear window defroster 171
Residual heat 181
Seat ventilation* 113
Steering wheel gearshift
control (CLK 55 AMG) 164
Tow-away alarm 85
Windshield wipers 49
Adding
Coolant 292
Engine oil 291
Additional turn signals 373
Adjustable air vents,
rear passenger compartment 182Adjusting 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
Air conditioning (cooling)
Turning off 181
Turning on 181
Air conditioning refrigerant 412
Air distribution
Adjusting 176
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431 Index
Centigrade
Setting temperature units 142
Central locking
Automatic 107
From inside 108
Locking from inside 108
Switch 108
Switching on/off
(control system) 149
Unlocking from inside 108
Central locking switch 108
Changing
Batteries (SmartKey with
KEYLESS-GO*) 351
Batteries (SmartKey) 350
Key setting 149
Changing CDs 199
Charcoal filter 179
Activating 179
Deactivating 180
Charging
Vehicle battery 386
CHECK ENGINE
malfunction indicator lamp 314Checking
Coolant level 292
Oil level 286, 289
Tire inflate pressure 286
Vehicle lighting 286
Child safety 69
Airbags 60
Infant and child
restraint systems 64, 69
LATCH child seat anchors 73
Child safety switch see
Blocking of rear window operation
Child seat anchors see
LATCH child seat anchors
Cigarette lighter 254Cleaning
Cup holder 309
Distronic* system sensor cover 308
Gear selector lever 309
Hard plastic trim items 310
Headlamps 167
Headliner 310
Instrument cluster 309
Leather upholstery 310
Light alloy wheels 309
Nubuck leather upholstery
(CLK 55 AMG) 310
Parktronic* system sensor 308
Plastic and rubber parts 310
Seat belts 310
Soft top 306
Steering wheel 309
Upholstery 310
Windows 309
Windshield 50
Wiper blades 308
Wood trims 310
CLK 55 AMG
Manual shift program mode 164
Clock 23, 144
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436 IndexEmission control 282
Emission control label 400
Ending
A call (telephone*) 155
Engine
Compartment 287
Message in display 314
Starting 44
Starting with KEYLESS-GO* 44
Starting with the SmartKey 44
Technical data 402
Turning off 54
Engine cleaning 306
Engine compartment 287
Fuse box in 395
Hood 287
Engine malfunction
indicator lamp 23, 314
Engine number 421Engine oil 288, 412
Adding 291
Additives 412
Checking level 289
Consumption 288
Filler cap 291
Filler neck 291
Message in display 332
Messages in display 290
Viscosity 421
Engine oil level see Oil level
ESP 23, 79, 421
Messages in display 324
Switching off 80
Switching on 81
Warning lamp 316, 317
ETD 421
Safety guidelines 62
ETD (Emergency tensioning device) 67
Exterior lamp switch 119
Exterior rear view mirrors
Adjusting 39
Parking position for 151F
Fahrenheit
Setting temperature units 142
Fastening the seat belts 40
Fine adjustment
Cruise control 228
Distronic* 235
First aid kit 343
Flat tire 380
Lowering the vehicle 384
Minispare wheel 346
Mounting the Minispare wheel 380
Preparing the vehicle 380
Flexible Service System (FSS) 302, 421
Floormates*
Installing 255
Removing 255
Floormats* 255
Fog lamp, rear 122, 373
Fog lamps
Replacing bulbs 373
Fog lamps, front
Messages in display 335
Replacing bulbs 374
Switching on 122
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442 IndexMenus 130
AUDIO 134
Control system 422
Distronic* 137, 232
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 346
Mounting 380
Removing 346
Storing 346
Technical data 406
Wheel bolts 347Mirrors
Activating exterior rear
view mirror parking position 169
Adjusting 38
Automatic antiglare
for rear view mirror 168
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 285
MON (Motor Octane Number) 422
Mph or km/h in speedometer 142
Multicontour seat* 112
Multifunction display 129, 422
Selecting language 143
Standard display 133Multifunction display messages
ABS 321
BAS 322, 323
Battery 326
Brake fluid 327
Brake pads 327
Check engine 314
Coolant 329
Coolant level 328
Cruise control 323
Display 331
Distronic* 323
Doors 331
Engine 314
Engine oil 332
ESP 324
Fog lamps, front 335
Fuel reserve tank 334
High beam headlamps 335
Hood 334
Key 334
Lamp sensor 336
Lamps 336
License plate lamp 336
Low beam 336
Parking brake 327
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443 Index
Roll bar 338
Selector lever 325
SmartKey with KEYLESS-GO* 334
Soft top 340
Steering gear oil level 341
Symbol messages 326–342
Tele Aid 341
Telephone* 342
Text messages 321–325
Trunk 342
Washer fluid 342
Multifunction
steering wheel 24, 130, 422
Buttons 130
N
Navigation system
Operating 137
See separate COMAND*
operating instructions
Night security illumination 121
Nubuck leather upholstery (CLK 55 AMG)
Cleaning 310O
Occupant safety 58
Airbags 59
Children and airbags 60
Children in the vehicle 69
Fastening the seat belts 40
Infant and child restraint systems 69
LATCH child seat anchors 73
Seat belts 40, 62
Odometer, main 23
Oil
Adding 291
Checking level 289
Consumption 288
Filler cap 291
Filler neck 291
Viscosity 421
Oil level
Checking 286
One-touch gearshifting 158
Canceling gear range limit 158
Downshifting 158
Upshifting 158Opening
Ashtray (Center console) 253
Ashtray (Rear seat) 254
Cup holder 251
Doors from the inside 97
Fuel filler flap 284
Fuel filler flap manually 352
Glove box 250
Hood 287
Side windows 211
Ski sack roller blind* 217, 245
Soft top 215
Soft top (SmartKey) 222
Soft top (switch) 218
Trunk 98
Trunk from the inside 99
Windows 210
Windows with SmartKey 213
Windows with soft top switch 212
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