2010 MERCEDES-BENZ C300 4MATIC Engine mount

Flexible Fuel Vehicles (identified by a label
reading Premium gasoline or E85 only! on
the fuel filler flap):
Ethanol fuel (E85) and its fumes are highly
flammable, poisonous and burn easily.
Ethanol fuel can cause serious injuries if
ignited or if you come into contact with it or
inhale fumes of it. Avoid inhalation of ethanol
fumes and skin contact with ethanol.
Extinguish all open flames before refueling.
Never smoke or create sparks close to
ethanol.
! Never refuel vehicles with gasoline engine
with diesel fuel. Even small amounts of
diesel fuel will damage the fuel system and
engine. Damage resulting from the use of
non-approved fuels or fuel additives or
resulting from mixing gasoline with diesel
fuel is not covered by the Mercedes-Benz
Limited Warranty.
! If you have accidentally filled the tank
with incorrect or non-approved fuel, do not
switch on the ignition. Otherwise the
incorrect or non-approved fuel will get into
the fuel lines. The fuel system must be
drained completely. Contact an authorized
Mercedes-Benz Center to have the fuel
system drained completely.
! To prevent damage to the catalytic
converters, only use premium unleaded
gasoline in this vehicle.
Flexible Fuel Vehicles (identified by a label
reading Premium gasoline or E85 only!
on the fuel filler flap) may be fueled with
E85. For additional information, see
“Flexible Fuel Vehicles”.
Any noticeable irregularities in engine
operation should be repaired promptly.
Otherwise, excessive unburned fuel may
reach the catalytic converter, causing it to
overheat and potentially start a fire.
i Only 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. Please contact gas
station personnel in case labels on the
pump cannot be found.
C 300 and C 300 Sport with automatic
transmission:
Flexible Fuel Vehicles are identified by a
label reading Premium gasoline or E85
only! on the fuel filler flap.
For more information on gasoline or E85,
see “Premium unleaded gasoline”
(Y page 354), see “Flexible Fuel Vehicles”
(Y page 355), see “Fuel requirements”
(Y page 354), or contact an authorized
Mercedes-Benz Center, or visit
www.mbusa.com (USA only).
Locking/unlocking the vehicle with the
SmartKey or KEYLESS-GO automatically
locks/unlocks the fuel filler flap.
iIn case the central locking system does
not release the fuel filler flap, see “Fuel filler
flap” (Y page 310).
The fuel filler flap is located on the right-hand
side of the vehicle towards the rear.
XTurn off the engine.
iLeaving the engine running and the fuel
filler cap open can cause the yellow engine
malfunction indicator lamp ; to
illuminate.
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GWarning!
The engine is equipped with a transistorized
ignition system. Because of the high voltage
it is dangerous to touch any components
(ignition coils, spark plug sockets, diagnostic
socket) of the ignition system
Rwith the engine running
Rwhile starting the engine
Rwhen the ignition is switched on and the
engine is turned manually
XPull hood lock release lever :.
The hood is unlocked.
! Never open the hood if the wiper arms are
folded forward away from the windshield.
Otherwise the windshield wipers or the
hood could be damaged.
XPush handle ; under the hood upwards.XPull up on the hood and then release it.
The hood will be held open at shoulder
height by gas-filled struts automatically.
ClosingGWarning!
When closing the hood, use extreme caution
not to catch hands or fingers. Be careful that
you do not close the hood on anyone.
Make sure the hood is securely engaged
before driving off. Do not continue driving if
the hood can no longer engage after an
accident, for example. The hood could
otherwise come loose while the vehicle is in
motion and injure you and/or others.
XLet the hood drop from a height of
approximately 8 in (20 cm).
XCheck to make sure the hood is fully
closed.
If you can raise the hood at a point above
the headlamps, then it is not properly
closed. Open it again and let it drop with
somewhat greater force.
Engine oil
The amount of oil your engine consumes will
depend on a number of factors, including
driving style. Increased oil consumption can
occur when the vehicle is new or the vehicle
is driven frequently at higher engine speeds.
Engine oil consumption checks should only
be made after the vehicle break-in period.
! Do not use any special lubricant additives,
as these may damage the drive assemblies.
Using special additives not approved by
Mercedes-Benz may cause damage not
covered by the Mercedes-Benz Limited
Warranty.
For further information contact an
authorized Mercedes-Benz Center.
Notes on checking engine oil level
When checking the oil level
Rthe vehicle must be parked on level ground
Rwith the engine at operating temperature,
the vehicle must have been stationary for
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Always use winter tires at temperatures
below 45‡ (7†) and whenever wintry road
conditions prevail. Not all M+S rated tires
provide special winter performance. Make
sure the tires you use show the mountain/
snowflake imarking on the tire sidewall.
These tires meet specific snow traction
performance requirements of the Rubber
Manufacturers Association (RMA) and the
Rubber Association of Canada (RAC) and
have been designed specifically for use in
snow conditions. Use of winter tires is the
only way to achieve the maximum
effectiveness of your vehicle’s driving safety
systems such as the ABS and the ESP ®
in
winter operation.
For safe handling, make sure all mounted
winter tires are of the same make and have
the same tread design.
For information on winter tires for your
vehicle model, see the “Technical data”
section ( Y page 344).
Always observe the speed rating of the winter
tires installed on your vehicle.
After installing winter tires:XCheck the tire inflation pressure and adjust
it if necessary ( Y page 232).XRestart the tire pressure loss warning
system ( Y page 233) or the Advanced Tire
Pressure Monitoring System (Y page 234).
Snow chains
! Some tire sizes do not leave adequate
clearance for snow chains. To help avoid
serious damage to your vehicle or tires,
make sure the use of snow chains is
permissible as specified in the “Technical
data” section of this Operator’s Manual.
Snow chains should only be driven on snow-
covered roads at speeds not to exceed
30 mph (50 km/h). Remove chains as soon
as possible when driving on roads without
snow.
Observe the following guidelines when using
snow chains:
R Use of snow chains is not permissible with
all wheel/tire combinations ( Y page 344).
R Use snow chains in pairs and on rear
wheels only. Follow the manufacturer’s
mounting instructions.
! If snow chains are mounted to the front
wheels, they may scrape against the body
or axle components. The tires or the vehicle
could be damaged as a result.
R Only use snow chains that are approved by
Mercedes-Benz. Any authorized Mercedes-
Benz Center will be glad to advise you on
this subject.
R Use of snow chains may be prohibited
depending on location. Always check local
and state laws before installing snow
chains.
R Do not use snow chains on the spare wheel.
i When driving with snow chains, you may
wish to switch off the ESP ®
(Y page 62)
before setting the vehicle in motion. This
will improve the vehicle’s traction.
Winter driving instructions
GWarning!
If the vehicle becomes stuck in snow, make
sure snow is kept clear of the exhaust pipe
and from around the vehicle with the engine
running. Otherwise, deadly carbon monoxide
(CO) gases may enter vehicle interior
resulting in unconsciousness and death.
To assure sufficient fresh air ventilation, open
a window slightly on the side of the vehicle
not facing the wind.
GWarning!
The outside temperature indicator is not
designed to serve as an ice-warning device
and is therefore unsuitable for that purpose.
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Indicated temperatures just above the
freezing point do not guarantee that the road
surface is free of ice. The road may still be icy,
especially in wooded areas or on bridges.GWarning!
On slippery road surfaces, never downshift in
order to obtain braking action. This could
result in drive wheel slip and reduced vehicle
control. Your vehicle’s ABS will not prevent
this type of loss of control.
The most important rule for slippery or icy
roads is to drive sensibly and to avoid abrupt
acceleration, braking and steering
maneuvers. Do not use the cruise control
system under such conditions.
When the vehicle is in danger of skidding, shift
the automatic transmission to neutral
position N or declutch in case of manual
transmission. Try to keep the vehicle under
control by corrective steering action.
i For information on driving with snow
chains, see “Snow chains” ( Y page 253).
Road salts and chemicals can adversely
affect braking efficiency. Increased pedal
force may become necessary to produce the
normal brake effect.
Depressing the brake pedal periodically when
traveling at length on salt-strewn roads can
bring road-salt-impaired braking efficiency
back to normal.
If the vehicle is parked after being driven on
salt-treated roads, the braking efficiency
should be tested as soon as possible after
driving is resumed.
GWarning!
Make sure not to endanger any other road
users when carrying out these braking
maneuvers.
Driving instructions
Drive sensibly – save fuel
To save fuel you should:
R Keep tires at the recommended inflation
pressures.
R Remove unnecessary loads.
R Remove roof rack when not in use.
R Allow engine to warm up under low load
use.
R Avoid frequent acceleration and
deceleration.
R Have all maintenance work performed at
the intervals specified in the Maintenance
Booklet and as required by the
Maintenance system. Contact an
authorized Mercedes-Benz Center.
Fuel consumption is also increased by driving
in cold weather, in stop-and-go traffic, on
short trips and in mountainous areas.
Drinking and driving
GWarning!
Drinking and driving and/or taking drugs and
driving are very dangerous combinations.
Even a small amount of alcohol or drugs can
affect your reflexes, perceptions and
judgment.
The possibility of a serious or even fatal
accident are greatly increased when you drink
or take drugs and drive.
Do not drink or take drugs and drive or allow
anyone to drive who has been drinking or
taking drugs.
Pedals
GWarning!
Make sure absolutely no objects are
obstructing the pedals’ range of movement.
Keep the driver’s footwell clear of all
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Display messagesPossible causes/consequences and M Solutions¥Check
Washer
FluidThe water level has dropped to approximately 1.1 US qts
(1.0 l).XAdd washer fluid ( Y page 228).DPower
Steering
Malfunctio
n
See
Operator's
ManualPower assistance for the steering system is not available. A
considerably higher degree of effort is necessary to steer the
vehicle.XCheck whether you are capable to apply the higher degree
of effort necessary to safely steer the vehicle.
If you are able to steer the vehicle safely:
XContinue driving with added caution.XHave the system checked at an authorized Mercedes-Benz
Center.
If, in any way, you feel that you are not able to steer the vehicle
safely:
XStop the vehicle in a safe location as soon as it is safe to
do so.XApply the parking brake.XDo not continue to drive.XContact an authorized Mercedes-Benz Center.
Engine
Display messagesPossible causes/consequences and M Solutions+Check
Coolant
Level See
Operator's
ManualThe coolant level is too low.XAdd coolant ( Y page 227).XIf you have to add coolant frequently, have the cooling
system checked at an authorized Mercedes-Benz Center.GWarning!
Do not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn
if it comes into contact with hot engine parts. You could be seriously burned.
! Do not ignore the low engine coolant level warning. Extended driving with the message
and symbol displayed may cause serious engine damage not covered by the Mercedes-Benz
Limited Warranty.
Do not drive without sufficient amount of coolant in the cooling system. The engine will
overheat causing major engine damage.
288Vehicle status messages in the multifunction displayPractical hints
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not exceed a vehicle speed of 50 mph
(80 km/h).
Contact the nearest authorized Mercedes-
Benz Center as soon as possible to have the
spare wheel replaced with a regular road
wheel.
Never operate the vehicle with more than one
spare wheel mounted.
Do not switch off the ESP ®
when a spare
wheel is mounted.
Preparing the vehicle
XWhenever possible, park the vehicle in a
safe distance from moving traffic on a hard,
flat surface.XTurn on the hazard warning flasher.XTurn the steering wheel so that the front
wheels are in a straight-ahead position.XEngage the parking brake.XShift the automatic transmission into park
position P (manual transmission to 1st or
reverse gear R).XTurn off the engine.XRemove the SmartKey from the starter
switch.
or
XVehicles with KEYLESS-GO: Open the
driver’s door (this puts the starter switch in
position 0, same as with the SmartKey
removed from the starter switch). The
driver’s door can then be closed again.
Open doors only when conditions are safe
to do so.XVehicles with KEYLESS-GO: Remove the
KEYLESS-GO start/stop button from the
starter switch.XHave any passenger exit the vehicle at a
safe distance from the roadway. Open
doors only when conditions are safe to do
so.Mounting the spare wheel
IntroductionXPrepare the vehicle as described
( Y page 318).XTake the following out of the vehicle:
R spare wheel
R jack
R vehicle tool kit box
For information on where to find the
respective items, see “Where will I find ...?”
( Y page 268) and ( Y page 270).
i Vehicles without spare wheel are not
factory-equipped with the tools required for
a wheel change such as a jack or a wheel
wrench. Some tools required for a wheel
change are specific to your vehicle.
Contact an authorized Mercedes-Benz
Center to obtain the tools approved for
your vehicle. This section describes the
wheel change using the tools approved and
recommended for your vehicle.
Lifting the vehicle
GWarning!
When jacking up the vehicle, only use the jack
which has been specifically approved by
Mercedes-Benz for your vehicle.
The jack is designed exclusively for jacking up
the vehicle at the jack take-up brackets built
into both sides of the vehicle. Make sure the
jack arm is fully seated in the jack take-up
bracket. The jack must always be vertical
when in use, especially on inclines or
declines.
The jack is intended only for lifting the vehicle
briefly for wheel changes. It is not suited for
performing maintenance work under the
vehicle. To help avoid personal injury, use the
jack only to lift the vehicle during a wheel
change.
Never get beneath the vehicle while it is
supported by the jack. Keep hands and feet
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Air conditioning refrigerant
R134a (HFC) refrigerant and special PAG
lubricating oil are used in the air conditioning
system.
! Never use R 12 (CFC) or mineral-based
lubricating oil. Otherwise damage to the
system will occur.
Brake fluid
GWarning!
During vehicle operation, the boiling point of
the brake fluid is continuously reduced
through the absorption of moisture from the
atmosphere.
Under extremely strenuous operating
conditions, this moisture content can lead to
the formation of bubbles in the system, thus
reducing the system’s efficiency.
Therefore, the brake fluid must be replaced
regularly. Refer to your vehicle’s Maintenance
Booklet for replacement interval.
Only brake fluid approved by Mercedes-Benz
is recommended. Any authorized Mercedes-
Benz Center will provide you with additional
information.
Premium unleaded gasoline
GWarning!
Gasoline is highly flammable and poisonous.
It burns violently and can cause serious
personal injury.
Never allow sparks, flames or smoking
materials near gasoline!
Turn off the engine before refueling.
Whenever you are around gasoline, avoid
inhaling fumes and any skin or clothing
contact. Extinguish all smoking materials.
Direct skin contact with fuels and the
inhalation of fuel vapors are damaging your
health.
! To maintain the engine’s durability and
performance, premium unleaded gasoline
must be used.
If premium unleaded gasoline is not
available and low octane gasoline is used,
follow these precautions:
R Have the fuel tank only partially filled
with unleaded regular gasoline and fill up
with premium unleaded gasoline as soon
as possible.
R Avoid full throttle driving and abrupt
acceleration.
R 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.
R Do not exceed 2
/ 3 of maximum
accelerator pedal position if the vehicle
is fully loaded or operating in
mountainous terrain.
Fuel requirements
Only use premium unleaded gasoline. The
octane number (posted at the pump) must be
91 min. It is an average of both the Research
Octane Number (RON) and the Motor Octane
Number (MON): (RON+MON)/2. This is also
known as the ANTI-KNOCK INDEX.
Reformulated gasolines (RFG) and/or
unleaded gasoline containing oxygenates
such as ethanol, TAME, ETBE, 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.
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Flexible Fuel Vehicles
All models of the C 300 with automatic
transmission are Flexible Fuel Vehicles.
Flexible Fuel Vehicles are identified by a label
reading Premium gasoline or E85 only! on
the fuel filler flap.
These vehicles are designed to operate on
premium unleaded gasoline or ethanol fuel
(E85), or on any mixture of these two. Ethanol
fuel (E85) is a mixture of approximately 85%
ethanol and 15% unleaded gasoline.GWarning!
Ethanol fuel (E85) and its fumes are highly
flammable, poisonous and burn easily.
Ethanol fuel can cause serious injuries if
ignited or if you come into contact with it or
inhale fumes of it. Avoid inhalation of ethanol
fumes and skin contact with ethanol.
Extinguish all open flames before refueling.
Never smoke or create sparks close to
ethanol.
Switching fuels
For best performance and driveability it is
recommended to use either one or the other
fuel. A refueling pattern that alternates
between the two different fuels should be
avoided if possible.
When switching fuels, make sure:
R Fuel level is below half full.
R Fuel level is above reserve (fuel tank
reserve warning lamp is not lit).
R Amount of added fuel is more than
5 gallons (20 liters).
R Ignition is off during refill.
R Immediately after refueling engine is
started and operated for at least 5 minutes.
These precautions and recommendations are
supposed to prevent any difficulties when
starting and operating the engine which
otherwise may be experienced before the
engine has fully adapted to the different fuel.
If in spite of these recommendations the
engine does not perform properly, adding
more gasoline (at least 3 gallons [12 liters])
to the fuel may improve the engine behavior.
Fuel consumption
E85 fuel contains less energy per gallon than
gasoline. To ensure that engine performance
with ethanol fuel is similar to that when using
gasoline, the engine must burn more ethanol
fuel. As a result, it is to be expected that the
fuel consumption will increase when using
E85 compared to gasoline operation.
Maintenance
Please inform your authorized Mercedes-
Benz Center if you use or have used E85 fuel
when your vehicle is delivered for
maintenance or repairs.
Cold weather performance
It is possible that starting times will
significantly increase at temperatures below
32‡ (0†). At low temperatures the use of a
block heater is recommended (contact an
authorized Mercedes-Benz Center for further
information). Rough idling may also be
experienced at such temperatures before the
engine is fully warmed up.
! E85 fuel is unsuitable for use when
ambient temperatures fall below 14‡
(-10†).
Hot weather performance
At ambient temperatures above 95‡ (35†)
start times may increase and be
accompanied by a rough idle following the
start.
Gasoline additives
A major concern among engine
manufacturers is carbon build-up caused by
gasoline. Mercedes-Benz recommends only
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