Page 10 of 426

ContentsTechnical data..................................  361
Parts service ......................................  362
Warranty coverage .............................  363
Loss of Service and Warranty 
Information Booklet......................  363
Identification labels............................  364
Layout of poly-V-belt drive .................  365
C 240 (all models) ........................  365
Engine ................................................  366
Rims and Tires ...................................  367
Same size tires .............................  368
Minispare wheel ...........................  369
Electrical system................................  370
Main Dimensions ...............................  371
Weights ..............................................  372Fuels, coolants, lubricants, etc. .........  373
Capacities ....................................  373
Engine oils....................................  375
Engine oil additives ......................  375
Air conditioning refrigerant ..........  375
Brake fluid ....................................  375
Premium unleaded gasoline .........  376
Fuel requirements ........................  376
Gasoline additives ........................  377
Flexible Fuel Vehicles ...................  377
Coolants.......................................  379
Windshield washer and 
headlamp cleaning system* .........  381
Consumer information .......................  382
Uniform tire quality grading .........  382
Technical terms...............................  385Index.................................................  391 
         
        
        
     
        
        Page 16 of 426

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 426

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 275 of 426

273 Operation
Engine compartment
If necessary, add engine oil.
For adding engine oil see (
page 274).
More information on engine oil can be 
found in the “Technical data” section 
(
page 373) and (
page 375).
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 the ignition (
page 33).If you see the message:
Observe waiting time
If engine is at operating temperature, 
wait five minutes before repeating 
check procedure.
If engine is not at operating tempera-
ture yet, wait 30 minutes before 
repeating check procedure.
If you see the message:
Engine oil level
Not when engine on
Turn off the engine.
If the engine is at operating tempera-
ture, wait five minutes before checking 
oil.
If the engine is not at operating temper-
ature yet, you must wait 30 minutes 
before checking oil.If there is excess engine oil with the engine 
at normal operating temperature, the 
following message will appear:
Engine oil level
Reduce oil level
Have excess oil siphoned or drained 
off. Contact an authorized 
Mercedes-Benz Center.
More information on messages in the 
display concerning engine oil can be found 
in the “Practical hints” section 
(
page 312) and (
page 313).
iIf you want to interrupt the checking 
procedure, press thek orj 
button on the multifunction steering 
wheel.
!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 276 of 426

274 OperationEngine compartmentAdding engine oil
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.
More information on engine oil can be 
found in the “Technical data” section 
(
page 373) and (
page 375).
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.
!Only use approved engine oils and oil 
filters required for vehicles with 
Maintenance System (U.S. vehicles) or 
FSS (Canada vehicles). For a listing of 
approved engine oils and oil filters, 
refer to the Factory Approved Service 
Products pamphlet in your vehicle 
literature portfolio, or contact an 
authorized Mercedes-Benz Center.
Using engine oils and oil filters of 
specification other than those 
expressly required for the Maintenance 
System (U.S. vehicles) or FSS (Canada 
vehicles), or changing of oil and oil filter 
at change intervals longer than those 
called for by the Maintenance System 
(U.S. vehicles) or FSS (Canada 
Vehicles) will result in engine damage 
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 363 of 426
361 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 364 of 426
362 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 
maintenance and repair work. In addition, 
strategically 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 
subjected to stringent quality inspections. 
Each part has been specifically developed, 
manufactured 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 365 of 426
363 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 
installed 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.