
Resume function ............................ 183
Setting current speed ....................181
Cup holders ........................................ 207
Curb weight ....................................... 250
Customer Assistance Center (CAC) ... 23
Customer Relations Department ....... 23
D
Dashboard see Instrument cluster
Data recording ..................................... 23
Date, Setting ...................................... 133
Daytime running lamp mode .............. 91
Switching on or off ......................... 133
Deep water
see Standing water
Defogging (windshield) ..................... 195
Defroster
Front (Climate control system) ......194
Rear window .................................. 196
Delayed shut-off
Exterior lamps ................................ 134
Interior lighting .............................. 135
Department of Transportation
see DOT
Difficulties
While driving .................................. 104
With starting .................................. 102
Dimensions (vehicle)
see Vehicle specification
Direction of rotation (tires) .............. 242
Displays
Maintenance service indicator .......259
Messages in the multifunction
display ........................................... 270
Multifunction display .....................120
Symbol messages ..........................279
Text messages ............................... 272
Trip computer ................................ 121
Vehicle status message memory ...129
Vehicle system settings .................130
Door control panel .............................. 33
Door handles ........................................ 33
Doors
Child safety locks ............................ 59
Locking/unlocking (KEYLESS-GO) ...71
Locking/unlocking (SmartKey) ........70
Messages in the multifunction
display ........................................... 286
Opening from inside ......................... 74
Remote door lock (Tele Aid) ........... 216
Remote door unlock (Tele Aid) .......215
Unlocking (Mechanical key) ...........309
DOT (Department of
Transportation) .................................. 250
Drinking and driving ......................... 254
Driving
Abroad ........................................... 257
Hydroplaning ................................. 257
Instructions ........................... 101, 254
In winter ........................................ 253
Problems ....................................... 104
Safety systems ................................ 60
Systems ......................................... 180
Through standing water .................257
Driving and parking
Safety notes .................................. 101
Driving off .................................. 103, 257
Driving safety systems ....................... 60
ABS .................................................. 61
Adaptive Brake ................................ 62
BAS .................................................. 61
EBP .................................................. 62
ESP ®
................................................ 62
ETS/4-ETS ....................................... 63
Driving systems
All-wheel drive (4MATIC) ................ 183
Cruise control ................................ 180
Dynamic handling package with
sport driving mode .........................184
Hill-start assist system ..................183
Parktronic system ..........................185
Rear view camera .......................... 188
Driving tips, automatic
transmission ...................................... 110
Dynamic handling package with
sport driving mode ............................ 184
E
E85 (ethanol fuel) .............................. 355
Easy-entry/exit feature .............. 85, 136
EBP (Electronic Brake
Proportioning) ...................................... 62
Index7204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 7

Electrical system
Improper work on or
modifications ................................... 22
Power outlets ................................. 210
Electrical system (Technical data)
see Vehicle specification
Electronic Stability Program
see ESP ®
Electronic Traction System
see ETS/4-ETS
Emergency, in case of
First aid kit ..................................... 268
Flat tire .......................................... 317
Hazard warning flasher ....................93
Roadside Assistance ................ 21, 214
Towing the vehicle .........................325
Emergency calls
Tele Aid .......................................... 212
Telephone ...................................... 173
Emergency operations
Remote door lock (Tele Aid) ........... 216
Remote door unlock (Tele Aid) .......215
Trunk lid, emergency release ...........76
Emergency Tensioning Device
see ETD
Emission control ............................... 258
Information label ............................ 333
System warranties ...........................20
Engine
Break-in recommendations ............222
Cleaning ......................................... 262
Compartment ................................ 224
Malfunction indicator lamp ............305
Messages in the multifunction
display ........................................... 288
Number .......................................... 333
Starting .......................................... 101
Turning off ..................................... 106
Engine (Technical data)
see Vehicle specification
Engine coolant
see Coolant
Engine oil
Adding ........................................... 226
Additives ........................................ 353
Checking level ............................... 226
Consumption ................................. 225Messages in the multifunction
display ........................................... 291
Oil dipstick ..................................... 226
Recommended engine oils and oil
filter ............................................... 353
ESP ®
(Electronic Stability
Program) .............................................. 62
ETS/4-ETS ....................................... 63
Messages in the multifunction
display ........................... 280, 281, 283
Warning lamp ................................. 302
ETD (Emergency Tensioning
Device) ................................................. 52
Safety guidelines ............................. 39
Ethanol fuel (E85) .............................. 355
ETS/4-ETS (Electronic Traction
System) ................................................ 63
Express operation
Panorama roof ............................... 200
Power windows ................................ 98
Tilt/sliding sunroof ........................196
Exterior lamp switch ........................... 90
Exterior rear view mirrors .................. 86
Fold-in function ................................ 88
Parking position ............................... 87
Power-folding ................................... 88
Switching fold-in function on or
off .................................................. 136
Exterior view of vehicle ...................... 26
F
Fastening the seat belts ..................... 50
First aid kit ......................................... 268
Flat tire ............................................... 317
Lowering the vehicle ......................321
Mounting the spare wheel .............318
Preparing the vehicle .....................318
Spare wheel ........................... 317, 349
Flexible Fuel Vehicles ....................... 355
Floormats ........................................... 220
Fluids
Automatic transmission fluid .........350
Brake fluid ..................................... 351
Capacities ...................................... 349
Engine coolant ............................... 351
Engine oil ....................................... 350
Manual transmission oil .................350
8Index204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 8

Power steering fluid .......................351
Washer and headlamp cleaning
system ........................................... 352
Fog lamps ............................................. 92
Messages in the multifunction
display ................................... 292, 294
Fold-in function for exterior rear
view mirrors ........................................ 88
Four-wheel drive see All-wheel drive (4MATIC)
Front air bags
see Air bags
Front axle oil ...................................... 351
Front lamps see Headlamps
Front passenger front air bag ............ 40
Messages in the multifunction
display ........................................... 272
Front passenger front air bag off
indicator lamp (Canada only) ..... 46, 307
Front passenger front air bag off
indicator lamp (USA only) .......... 42, 308
Front seat head restraints see Head restraints
Fuel ..................................................... 222
Additives ........................................ 355
Capacity, fuel tank .........................352
Drive sensibly–safe fuel .................254
Ethanol fuel (E85) .......................... 355
Fuel consumption (Flexible Fuel
Vehicle) .......................................... 355
Fuel consumption statistics ...........122
Fuel filler flap and cap ...................223
Fuel tank reserve warning lamp .....304
Premium unleaded gasoline ...........354
Refueling ........................................ 222
Requirements ................................ 354
Switching (Flexible Fuel Vehicle) .... 355
Fuel filler flap ..................................... 223
Opening manually ..........................310
Fuel gauge ................................... 28, 118
Fuels, coolants, lubricants etc. ........ 349
Fuel tank
Capacity ........................................ 352
Fuel filler flap and cap ...................223
Refueling ........................................ 222
Fuses .................................................. 328G
Garage door opener .................... 32, 216
Gasoline see Fuel
GAWR (Gross Axle Weight Rating) ... 251
Gear range ......................................... 111
Indicator ........................................ 111
Limiting .......................................... 112
Shifting into optimal ......................113
Gear selector lever ............................ 108
Cleaning ......................................... 265
Gearshift pattern ........................... 108
Lock ...................................... 102, 108
Shifting procedure .........................109
Transmission position indicator .....109
Transmission positions ..................109
Gearshift lever ................................... 107
Gearshift pattern ........................... 107
Generator
see Alternator
Global locking/unlocking
see Key, SmartKey
Glove box ........................................... 205
Gross Axle Weight Rating see GAWR
Gross Vehicle Weight
see GVW
Gross Vehicle Weight Rating
see GVWR
GVW (Gross Vehicle Weight) ............ 251
GVWR (Gross Vehicle Weight
Rating) ................................................ 251
H
Halogen headlamps see Headlamps
Hard plastic trim items, cleaning .... 265
Hazard warning flasher ....................... 93
Headlamp cleaning system ................ 93
Headlamps
Active Bi-Xenon headlamps .............90
Automatic headlamp mode ..............91
Bi-Xenon .................................. 90, 314
Cleaning lenses ............................. 263
Cleaning system .............................. 93
Daytime running lamp mode ............91
Index9204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 9

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.
At the gas station223Operation204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 223Z
![MERCEDES-BENZ C300 4MATIC 2010 W204 Owners Manual ModelCapacityFuels, coolants,
lubricants, etc.Fuel tankAll models17.4 US gal (66.0 l)Premium unleaded
gasoline (Minimum
Posted Octane 91
[Avg. of
96 RON/86 MON])
C 300, all models
(with automatic
tra MERCEDES-BENZ C300 4MATIC 2010 W204 Owners Manual ModelCapacityFuels, coolants,
lubricants, etc.Fuel tankAll models17.4 US gal (66.0 l)Premium unleaded
gasoline (Minimum
Posted Octane 91
[Avg. of
96 RON/86 MON])
C 300, all models
(with automatic
tra](/manual-img/4/3535/w960_3535-353.png)
ModelCapacityFuels, coolants,
lubricants, etc.Fuel tankAll models17.4 US gal (66.0 l)Premium unleaded
gasoline (Minimum
Posted Octane 91
[Avg. of
96 RON/86 MON])
C 300, all models
(with automatic
transmission):
Flexible Fuel
Vehicles (identified
by a label reading
Premium
gasoline or E85
only! on the fuel
filler flap).
Alternative fuel:
Ethanol fuel (E85)Fuel tank
reserveAll models,
except C 63 AMGapprox. 2.1 US gal (8.0 l)C 63 AMGapprox. 3.7 US gal (14.0 l)Air
conditioning
systemAll models—R134a refrigerant
and special
PAG lubricant oil
(never R 12)Washer
systemC 250 64
C 250 Sport 64
C 250 4MATIC 64
C 250 4MATIC Sport 644.2 US qt (4.0 l)MB Windshield
Washer
Concentrate 68
( Y page 358)
Washer fluid mixing
ratio ( Y page 358)C 300
C 300 Sport 65
C 350
C 350 Sport 653.7 US qt (3.5 l)Washer
system and
headlamp
cleaning
systemC 300 4MATIC
C 300 4MATIC Sport 65
C 350 4MATIC 64
C 63 AMG6.3 US qt (6.0 l)64 Canada only.
68 Mixed with water or commercially available premixed washer solvent/antifreeze.
65 USA only.352Fuels, coolants, lubricants, etc.Technical data
204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 352

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.
354Fuels, coolants, lubricants, etc.Technical data
204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 354

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
Fuels, coolants, lubricants, etc.355Technical data204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 355Z