Page 10 of 442

ContentsTechnical data.................................. 373
Parts service ...................................... 374
Warranty coverage ............................. 375
Loss of Service and Warranty
Information Booklet...................... 375
Identification labels............................ 376
Layout of poly-V-belt drive ................. 377
C 230 Kompressor (all models) .... 377
C 240 (all models)/
C 320 (all models)/
C 55 AMG..................................... 377
Engine ................................................ 378
Rims and Tires ................................... 380
Same size tires ............................. 381
Mixed size tires ............................ 382
Minispare wheel ........................... 383
Collapsible tire
(C 55 AMG only) ........................... 383
Electrical system................................ 384
Main dimensions................................ 385
Weights .............................................. 386Fuels, coolants, lubricants, etc. ......... 387
Capacities .................................... 387
Engine oils.................................... 390
Engine oil additives ...................... 390
Air conditioning refrigerant .......... 390
Brake fluid .................................... 390
Premium unleaded gasoline ......... 391
Fuel requirements ........................ 391
Gasoline additives ........................ 392
Flexible Fuel Vehicles ................... 392
Coolants....................................... 394
Windshield washer and
headlamp cleaning system* ......... 396
Consumer information ....................... 397
Uniform tire quality grading ......... 397
Technical terms............................... 399Index................................................. 405
Page 16 of 442

14 IntroductionWhere to find itThis Operator’s Manual is designed to pro-
vide comprehensive support information
for you, the vehicle operator. Each section
has its own reference color so you can find
information quickly.At a glance
Here you will find an overview of all the
controls that can be operated from the
driver’s seat.Getting started
Here you will find all the information you
need for your first drive. You should read
this section first if this is your first
Mercedes-Benz vehicle or if you are rent-
ing or borrowing this vehicle.Safety and Security
Here you will find descriptions of the safety
features of your vehicle.
Controls in detail
Here you will find detailed information
about the equipment installed in your vehi-
cle. This section expands on the “Getting
started” section and also describes techni-
cal innovations. If you are already familiar
with the basic functions of your vehicle,
this section will be of particular interest to
you.Operation
Here you will find all the information you
need for the proper operation of your vehi-
cle.Practical hints
This section provides fast assistance for
dealing with problems you may encounter.
Technical data
All important technical data for your vehi-
cle can be found in this section.Indexes
The glossary provides explanations of the
most important technical terms.
The table of contents and the index are de-
signed to help you find information quickly
and easily.
The following publications are part of your
vehicle documentation:
this Operator’s Manual
the Maintenance Booklet
Separate operating instructions will be
provided as required depending on the
equipment options installed in your vehi-
cle.
Page 18 of 442

16 IntroductionOperating safety
Proper use of the vehicle
Proper use of the vehicle requires that you
are familiar with the following information
and rules:
the safety precautions in this manual
the “Technical data” section in this
manual
traffic rules and regulations
motor vehicle laws and safety
standards
Warning!
G
Work improperly carried out on electronic
components and associated software could
cause them to cease functioning. Because
the vehicle’s electronic components are
interconnected, any modifications made
may produce an undesired effect on other
systems. Electronic malfunctions could
seriously impair the operating safety of your
vehicle.
See an authorized Mercedes-Benz Center
for repairs or modifications to electronic
components.
Other improper work or modifications on the
vehicle could also have a negative impact on
the operating safety of the vehicle.
Some safety systems only function while the
engine is running. You should therefore
never turn off the engine while driving.
Warning!
G
Heavy blows against the vehicle underbody
or tires/wheels, for example when running
over an obstacle, road debris or a pothole,
may cause serious damage and impair the
operating safety of your vehicle. If you feel a
sudden significant vibration or ride distur-
bance, or you suspect that damage to your
vehicle has occurred, you should turn on
your hazard warning flashers, carefully slow
down, and drive with caution to an area
which is a safe distance from the road.
Inspect the vehicle underbody and
tires/wheels for possible damage. If the
vehicle appears unsafe, have it towed to the
nearest authorized Mercedes-Benz Center
or other qualified maintenance or repair
facility for further inspection or repairs.
Warning!
G
Various warning labels are attached to your
vehicle. These warning labels are intended
to make you and others aware of various
risks. You should not remove any of these
warning labels unless explicitly instructed to
do so by information on the label itself.
Removal of any of these labels may cause
you and others to be unaware of certain
risks which may result in an accident and/or
personal injury.
Page 282 of 442

280 OperationEngine compartmentChecking engine oil level with the
control system
When checking the oil level
the vehicle must be parked on level
ground
with the engine at operating tempera-
ture, the vehicle must have been
stationary for at least five minutes with
the engine turned off
with the engine not at operating tem-
perature yet, the vehicle must have
been stationary for at least 30 minutes
with the engine turned off
To check the engine oil level via the
multifunction display, do the following:
Switch on ignition (
page 33).
The standard display (
page 121) should
appear in the multifunction display.
Press buttonk orj on the
steering wheel until the following
message is seen in the multifunction
display:One of the following messages will
subsequently appear in the indicator:
Engine oil level
OK
Add 1.0 qt engine oil
for max. oil level(Canada:
1.0 l
)
Add 1.5 qts engine oil
for max. oil level(Canada:
1.5 l
)
Add 2.0 qts engine oil
for max. oil level(Canada:
2.0 l
)
If necessary, add engine oil.
For adding engine oil see (
page 281).
More information on engine oil can be
found in the “Technical data” section
(
page 387) and (
page 390).
Other display messages
If the SmartKey is not turned to position2
in the starter switch, the following
message will appear:
Switch ignition on to
check engine oil level
Switch on ignition (
page 33).
iIf you want to interrupt the checking
procedure, press thek orj
button on the multifunction steering
wheel.
Page 284 of 442

282 OperationEngine compartmentC 230 Kompressor (all models)1Filler cap
Unscrew filler cap1 from filler neck.
Add engine oil as required. Be careful
not to overfill with oil.
Be careful not to spill any oil when adding.
Avoid environmental damage caused by oil
entering the ground or water.
Screw filler cap1 back on filler neck.
C 240 (all models), C 320 (all models),
C55AMG1Filler cap
Unscrew filler cap1 from filler neck.
Add engine oil as required. Be careful
not to overfill with oil.Be careful not to spill any oil when adding.
Avoid environmental damage caused by oil
entering the ground or water.
Screw filler cap1 back on filler neck.
More information on engine oil can be
found in the “Technical data” section
(
page 387) and (
page 390).
Transmission fluid level
The transmission fluid level does not need
to be checked. If you notice transmission
fluid loss or gear shifting malfunctions,
have an authorized Mercedes-Benz Center
check the transmission.
!Excess oil must be siphoned or drained
off. It could cause damage to the
engine and catalytic converter not
covered by the Mercedes-Benz Limited
Warranty.
!Excess oil must be siphoned or drained
off. It could cause damage to the
engine and catalytic converter not
covered by the Mercedes-Benz Limited
Warranty.
Page 375 of 442
373 Technical data
Parts service
Warranty coverage
Identification labels
Layout of poly-V-belt drive
Engine
Rims and Tires
Electrical system
Main dimensions
Weights
Fuels, coolants, lubricants, etc.
Consumer information
Page 376 of 442
374 Technical dataThe “Technical data” section provides the
necessary technical data for your vehicle.Parts service
All authorized Mercedes-Benz Centers
maintain a stock of genuine
Mercedes-Benz parts required for mainte-
nance and repair work. In addition, strate-
gically located parts distribution centers
provide quick and reliable parts service.
More than 300 000 different parts for
Mercedes-Benz models are available.
Genuine Mercedes-Benz parts are subject
to stringent quality inspections. Each part
has been specifically developed, manufac-
tured or selected for and adapted to
Mercedes-Benz vehicles.
Therefore, genuine Mercedes-Benz parts
should be installed.
!The use of non-genuine Mercedes-Benz
parts and accessories not authorized
by Mercedes-Benz could damage the
vehicle, which is not covered by the
Mercedes-Benz Limited Warranty, or
could compromise the vehicle’s
durability or safety.
Page 377 of 442
375 Technical data
Warranty coverage
Warranty coverage
Your vehicle is covered under the terms of
the “warranties” printed in the Service and
Warranty Information booklet. Your autho-
rized Mercedes-Benz Center will exchange
or repair any defective parts originally in-
stalled in the vehicle in accordance with
the terms of the following warranties:
New Vehicle Limited Warranty
Emission System Warranty
Emission Performance Warranty
California, Maine, Massachusetts, and
Vermont Emission Control Systems
WarrantyReplacement parts and accessories are
covered by the Mercedes-Benz Parts and
Accessories warranties, copies of which
are available at any Mercedes-Benz
Center.Loss of Service and Warranty
Information Booklet
Should you lose your Service and Warranty
Information booklet, have an authorized
Mercedes-Benz Center arrange for a
replacement. It will be mailed to you.