octane MERCEDES-BENZ CLK350 COUPE 2007 C209 Owner's Manual

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

304 Operation
At the gas station
Open the fuel filler flap by pushing at
the point indicated by the arrow 1.
The fuel filler flap springs open.
Turn fuel cap counterclockwise and
hold on to it until possible pressure is
released.
Take off cap and set it in the direction
of arrow 2 in the recess on the fuel fill-
er flap.
To prevent fuel vapors from escaping
into open air, fully insert filler nozzle
unit.
Only fill your tank until the filler nozzle
unit cuts out – do not top up or
overfill.
Replace fuel cap by turning it clockwise
until it audibly engages.
Close fuel filler flap.
Warning!G
Overfilling of the fuel tank may create
pressure in the system which could cause a
gas discharge. This could cause the gas to
spray back out when removing the fuel
pump nozzle, which could cause personal
injury.
iMake sure to close the fuel filler flap before
locking your vehicle as the flap locking pin
prevents closing after you have locked the
vehicle.
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.
For more information on gasoline, see “Premium
unleaded gasoline” (
page 451) or the Factory
Approved Service Products pamphlet.
iLeaving the engine running and the fuel cap
open can cause theú malfunction indicator
lamp (USA only) or the± malfunction indica-
tor lamp (Canada only) to illuminate.
More information can be found in the “Practical
hints” section (
page 359).


441 Technical data
Engine
Engine
ModelCLK 350 (209.356)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.
CLK 550 (209.372)1
Engine272273
Mode of operation4-stroke engine, gasoline injection4-stroke engine, gasoline injection
No. of cylinders68
Bore3.66 in (92.90 mm)3.85 in (98.00 mm)
Stroke3.39 in (86.00 mm)3.56 in (90.50 mm)
Total piston displacement213.5 cu in (3 498 cm3)333.25 cu in (5 461 cm3)
Compression ratio10.5:110.5:1
Output acc. to SAE J 1349268 hp / 6 000 rpm2
(200 kW / 6 000 rpm)
2Premium fuel required. Performance may vary with fuel octane rating.
382 hp / 6 000 rpm2
(285 kW / 6 000 rpm)
Maximum torque acc. to SAE J 1349258 lb-ft/ 2 400 - 5 000 rpm
(350 Nm / 2 400 - 5 000 rpm)391 lb-ft / 2 800 - 4 800 rpm
(530 Nm /2 800 - 4 800 rpm)
Maximum engine speed6 300 rpm6500 rpm
Firing order1-4-3-6-2-51-5-4-2-6-3-7-8
Poly-V-belt2 404 mm2 404 mm

449 Technical data
Fuels, coolants, lubricants, etc.
ModelCapacityFuels, coolants, lubricants, etc.
Cooling systemCLK 350
CLK 550approx. 7.8 US qt (7.4 l)
approx. 9.7 US qt (9.2 l)MB 325.0 Anticorrosion/Antifreeze
Agent
Fuel tank
including a reserve of16.35 US gal (62.0 l)
2.11 US gal (8.0 l)Premium unleaded gasoline:
Minimum Posted Octane 91
(Avg.of96RON/86MON)
Air conditioning systemR-134a refrigerant and special PAG lu-
bricant oil (never R-12)
Windshield washer and
headlamp cleaning system*6.4 US qt (6.0 l)MB Windshield Washer Concentrate1
1Use MB Windshield Washer Concentrate “MB SummerFit” and water for temperatures above freezing point or MB Windshield Washer Concentrate “MB SummerFit”
and commercially available premixed windshield washer solvent / antifreeze for temperatures below freezing point. Follow suggested mixing ratios (page 455).

451 Technical data
Fuels, coolants, lubricants, etc.
Premium unleaded gasolineFuel 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 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.Warning!G
Gasoline is highly flammable and poisonous.
It burns violently and can cause serious per-
sonal injury.
Never allow sparks, flame or smoking mate-
rials near gasoline!
Turn off the engine before refueling
Whenever you are around gasoline, avoid in-
haling fumes and skin or clothing contact,
extinguish all smoking materials.
Direct skin contact with fuels and the inha-
lation of fuel vapors can be damaging to
your health.
!To maintain the engine’s durability and per-
formance, premium unleaded gasoline must be
used. If premium unleaded is not available and
low octane fuel is used, follow these precau-
tions:

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 acceler-
ation.

Do not exceed an engine speed of 3 000 rpm
if the vehicle is loaded with a light load such
as two persons and no luggage.

Do not exceed 2/3 of maximum accelerator
pedal position if the vehicle is fully loaded or
operating in mountainous terrain.

463 Index
Front passenger front air bag 65, 69
Messages in display 372–375
Front passenger front
air bag off indicator lamp 29, 74, 366
Front seat head restraints
see Head restraints
FSS (Canada vehicles) 343
Fuel 304, 449
Additives 452
Automatic transmission fluid 448
Brake fluid 448
Capacities 448
Capacities, Fuel tank 449
Engine coolant 449
Engine oil 448
Filling the tank 303
Fuel display 27
Fuel filler flap and cap 303
Fuel filler flap and cap, Multifunction
display messages 383
Fuel reserve warning lamp 363
Power steering fluid 448
Premium unleaded
gasoline 304, 449, 451
Requirements, Octane rating 451
Technical data 449Fuel cap
Message in display 360
Fuel consumption statistics
After start 163
Resetting 164
Since last reset 164
Fuel filler flap 303
Locking/unlocking 303
Opening 304
Fuel reserve warning lamp 27
Fuel tank
Capacity 449
Filler flap 303
Message in display 385
Fuel, Premium unleaded
gasoline 304, 449, 451
Fuels, coolants, lubricants etc.
Capacities 448
Fuses 431
Fuse box (main)
in passenger compartment 432
Fuse box
in engine compartment 433
Fuse box
in trunk 434
Replacing 431G
Garage door opener 31, 285
Gasoline see Fuel
GAWR 337
Gear range
Automatic transmission 173
Limiting 173
Shifting into optimal 176, 178
Gear selector lever 50, 168
Cleaning 353
Gearshift pattern 168
Lock 51
Message in display 376
Position 169, 170
Position indicator 141
Shifting procedure 169
Unlocking in an emergency 401
Gear selector lever one-touch gearshifting
Automatic transmission 175
Global locking/unlocking
see Key, SmartKey or KEYLESS-GO*

467 Index
Lock buttons
Door handle (KEYLESS-GO*) 62, 105
Trunk lid (KEYLESS-GO*) 106
Loss of keys 107
Loss of Service and
Warranty Information Booklet 437
Low beam headlamps
Indicator lamp 27
Messages in display 388
Replacing bulbs (Bi-Xenon*) 407
Replacing bulbs (Halogen) 407, 409
Switching on 27, 55
Lubricants 448M
Maintenance 12, 343
Calling up service indicator 345
Clearing service indicator 344
FSS (Canada vehicles) 343
Maintenance System
(U.S. vehicles) 343
Resetting service indicator 345
Service indicator 343
Service term exceeded 344
Maintenance system (U.S. vehicles) 343
Manual headlamp mode see Headlamps
MAXCOOL maximum cooling 201
Maximum load rating, Tires 338
Maximum loaded vehicle weight,
Tire inflation pressure 338
Maximum tire inflation pressure 338
Mechanical key 399
Memory function see Seats, Power
Menus see Control system menus
Microphone, Hands-free 31
Minispare wheel see Spare wheelMirrors
Adjusting 45
Antiglare position 179
Auto-dimming 180
Exterior rear view mirrors 45
Interior rear view mirror 45
Mobile phone see Telephone*
MOE tires* see MOExtended system*
MOE* see MOExtended system*
MOExtended system* 420
MOExtended tires* 442
MON 304
Motor Octane Number see MON
MP3 224
Multicontour seat*
see Seats, Multicontour*
Multifunction display 141
Changing settings
see Control system menus and
Control system submenus
Selecting language 154
Symbol messages 378–393
Text messages 370–376

471 Index
Recovery services,
Stolen vehicle (Tele Aid) 285
Refrigerant, Air conditioning 450
Refueling 303
Regular checks 305
Remote control
SmartKey 98, 101
SmartKey with KEYLESS-GO* 101
Remote door unlock (Tele Aid) 284
Removing
Ski sack* (Canada only) 264
Replacing bulbs 406
Additional turn signals 407
Backup lamps 407, 411
Brake lamps 407
Corner-illuminating
front fog lamp* 407
Fog lamps 407, 411
Headlamp bulbs 409
Headlamps 407
High beam flasher (Bi-Xenon*) 407
High beam flasher (Halogen) 407
High beam headlamps
(Bi-Xenon*) 407
High beam headlamps
(Halogen) 407, 409High mounted brake lamp 407
License plate lamps 407, 412
Low beam headlamps
(Bi-Xenon*) 407
Low beam headlamps
(Halogen) 407, 409
Parking lamps 407, 410, 411
Side marker lamps 407
Standing lamps 407, 410, 411
Tail lamps 407, 411
Turn signal lamps 407, 411
Turn signal lamps (Bi-Xenon*) 411
Turn signal lamps (Halogen) 410
Reporting safety defects 18
Research Octane Number see RON
Reset button, In instrument
cluster 27, 138, 151, 152
Residual heat and ventilation* see REST*
REST* 205
Restraint system
see Children in the vehicle
Restraint system see SRS
Reverse gear position,
Automatic transmission 168, 170
Rims 338, 442
Roadside Assistance 12, 282RON 304
Roof rack 261
Rubber parts, cleaning 352
Run Flat Indicator (Canada only) 324