fuel pump MERCEDES-BENZ CLK350 COUPE 2007 C209 Owner's Manual

164 Controls in detail
Control system
Fuel consumption since last reset
Press buttonÿ orè repeatedly
until the first function of the trip com-
puter menu appears in the
multifunction display.
Press buttonj ork repeatedly
until the message
Since reset appears
in the multifunction display.
1Distance driven since last reset
2Time elapsed since last reset
3Average speed since last reset
4Average fuel consumption since last
resetResetting fuel consumption statistics
Press buttonÿ orè repeatedly
until the first function of the trip com-
puter menu appears in the
multifunction display.
Press buttonj ork repeatedly
until the reading that you want to reset
appears in the multifunction display.
Press and hold the reset button in the
instrument cluster (
page 138) until
the value is reset to
0.Distance to empty
Switch on the ignition (page 38).
Press buttonÿ orè repeatedly
until the first function of the trip com-
puter menu appears in the
multifunction display.
Press buttonj ork repeatedly
until the message
Range appears in the
multifunction display.
The calculated remaining driving range
based on the current fuel tank level
appears in the multifunction display. If
the remaining fuel in the tank is suffi-
ciently low, a fuel pump is shown in-
stead of the range.

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).


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.