2012 MERCEDES-BENZ C-Class SEDAN warning

TiresSummer tiresAlloy wheelsV1V2V3V4BA225/45 R17 91 W
MOExtended 27, 287.5 J x 17 H2
Wheel offset: 1.85 in (47 mm)###—FA

RA225/45 R17 91 W
MOExtended 27
245/40 R17 91 W
MOExtended 27, 297.5 J x 17 H2
Wheel offset: 1.85 in (47 mm)
8.5 J x 17 H2
Wheel offset: 2.28 in (58 mm)###—FA

RA225/40 R18 92 Y XL

255/35 R18 94 Y XL 297.5 J x 18 H2
Wheel offset: 1.85 in (47 mm)
8.5 J x 18 H2
Wheel offset: 2.13 in (54 mm)###—FA

RA225/40 R18 92 Y XL

255/35 R18 94 Y XL 298.0 J x 18 H2
Wheel offset: 1.97 in (50 mm)
8.5 J x 18 H2
Wheel offset: 2.13 in (54 mm)###—FA

RA225/40 ZR18 92 Y XL

255/35 ZR18 94 Y XL 298.0 J x 18 H2
Wheel offset: 1.97 in (50 mm)
8.5 J x 18 H2
Wheel offset: 2.13 in (54 mm)###—FA

RA235/40 ZR18 95 Y XL

255/35 ZR18 94 Y XL 298.0 J x 18 H2
Wheel offset: 1.77 in (45 mm)
9.0 J x 18 H2
Wheel offset: 2.13 in (54 mm)———#FA

RA235/35 ZR19 XL

255/30 ZR19 XL 298.0 J x 19 H2
Wheel offset: 1.77 in (45 mm)
9.0 J x 19 H2
Wheel offset: 2.13 in (54 mm)———#27 MOExtended tires (tires with run-flat characteristics) only in combination with an activated tire pressure loss
warning system or tire pressure monitor.
28 Not in combination with sports suspension code 486, dynamic handling package code 483 or Sports package
code 950/952.
29 Use of snow chains is not permitted. Observe the notes in the "Snow chains" section.Wheel and tire combinations337Wheels and tiresZ

All-weather tiresAlloy wheelsV1V2V3V4BA205/55 R16 91 H M+S307 J x 16 H2
Wheel offset: 1.69 in (43 mm)#———BA225/45 R17 91 H M+S 287.5 J x 17 H2
Wheel offset: 1.85 in (47 mm)##——FA

RA225/45 R17 91 H M+S

245/40 R17 91 H M+S 297.5 J x 17 H2
Wheel offset: 1.85 in (47 mm)
8.5 J x 17 H2
Wheel offset: 2.28 in (58 mm)###—Winter tiresAlloy wheelsV1V2V3V4BA205/55 R1 6 91 H
M+S i 307 J x 16 H2
Wheel offset: 1.69 in (43 mm)#———BA225/45 R17 91 H M+S i7.5 J x 17 H2
Wheel offset: 1.85 in (47 mm)###—BA225/45 R17 91 H
M+S i MOExtended 277.5 J x 17 H2
Wheel offset: 1.85 in (47 mm)###—BA225/40 R18 92 V XL
M+S i8.0 J x 18 H2
Wheel offset: 1.77 in (45 mm)———#BA235/40 R18 95 V XL
M+S i 298.0 J x 18 H2
Wheel offset: 1.77 in (45 mm)———#FA

RA235/40 R18 95 V XL
M+S i
255/35 R18 94 V XL
M+S i 298.0 J x 18 H2
Wheel offset: 1.77 in (45 mm)
9.0 J x 18 H2
Wheel offset: 2.13 in (54 mm)———#30 Not in combination with Sports package code 950/952.
28 Not in combination with sports suspension code 486, dynamic handling package code 483 or Sports package
code 950/952.
29 Use of snow chains is not permitted. Observe the notes in the "Snow chains" section.
27 MOExtended tires (tires with run-flat characteristics) only in combination with an activated tire pressure loss
warning system or tire pressure monitor.338Wheel and tire combinationsWheels and tires

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Please read the information on qualified
specialist workshops ( Y page 24).
Notes on technical data
i The data stated here specifically refers to
a vehicle with standard equipment. Consult
an authorized Mercedes-Benz Center for
the data for all vehicle variants and trim
levels.
Genuine Mercedes-Benz parts
All Mercedes-Benz Centers maintain a supply
of genuine Mercedes-Benz parts for
necessary service and repair work. In
addition, strategically located parts delivery
centers provide for quick and reliable parts
service.
There are more than 300,000 different
genuine Mercedes-Benz parts available for
Mercedes-Benz models.
Genuine Mercedes-Benz parts are subject to
strict quality control. Each part has been
specially developed, manufactured or
selected for Mercedes-Benz vehicles and
fine-tuned for them.
Therefore, only genuine Mercedes-Benz parts
should be used.
GWARNING
Driving safety may be impaired if non-
approved parts, tires and wheels or safety-
relevant accessories are used.
This could lead to malfunctions in safety-
relevant systems, e.g. the brake system. This
could cause you to lose control of your vehicle
and cause an accident.
For this reason, Mercedes-Benz recommends
that you use genuine Mercedes-Benz parts or
parts of equal quality. Only use tires, wheels
and accessories that have been specifically
approved for your vehicle.
! Air bags and Emergency Tensioning
Devices, as well as control units and
sensors for these restraint systems may be
installed in the following areas of your
vehicle:
R doors
R door pillars
R door sills
R seats
R dashboard
R instrument cluster
R center console
Do not install accessories such as audio
systems in these areas. Do not carry out
repairs or welding. You could impair the
operating efficiency of the restraint
systems.
Have aftermarket accessories installed at
a qualified specialist workshop. Mercedes-
Benz recommends that you use an
authorized Mercedes-Benz Center for this
purpose.
HEnvironmental note
Daimler AG also supplies reconditioned major
assemblies and parts which are of the same
quality as new parts. They are covered by the
same Limited Warranty entitlements as new
parts.
Always specify the vehicle identification
number (VIN) ( Y page 343) and the engine
342Genuine Mercedes-Benz partsTechnical data

iThe data shown on the identification plate
is example data. This data is different for
every vehicle and can deviate from the data
shown here. You can find the data
applicable to your vehicle on the vehicle's
identification plate.
Vehicle identification number (VIN)
The vehicle identification number (VIN) can
be found in the following locations:
R on the vehicle identification plate
( Y page 343)
R on the lower edge of the windshield
( Y page 344)
In addition to being stamped on the vehicle
identification plate, the vehicle identification
number (VIN) is also stamped onto the vehicle
body.
It is located on the floor in front of the right-
hand front seat.
XSlide the right-hand front seat to its
rearmost position.XFold floor covering : upwards.
You will see vehicle identification number
(VIN) ;.Engine number:Emission control information plate,
including the certification of both federal
and Californian emissions standards;Engine number (stamped into the
crankcase)=VIN (on the lower edge of the windshield)
Service products and capacities
Important safety notes
Service products include the following:
R fuels (e.g. gasoline, diesel)
R lubricants (e.g. engine oil, transmission oil)
R coolant
R brake fluid
R windshield washer fluid
Vehicle components and their respective
lubricants must match. You should therefore
only use products that have been tested and
approved by Mercedes-Benz.
Information on tested and approved products
can be obtained at a Mercedes-Benz Center
or on the Internet at http://
www.mbusa.com (USA only).
GWARNING
Comply with all valid regulations with respect
to handling, storing and disposing of service
fluids. Otherwise, you could endanger
persons or the environment.
Keep service fluids out of the reach of
children.
344Service products and capacitiesTechnical data

Fuel
Important safety notesGWARNING
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.
Direct skin contact with fuels and the
inhalation of fuel vapors are damaging to your
health.
Premium-grade unleaded gasoline
! To ensure the longevity and full
performance of the engine, only premium-
grade unleaded gasoline may be used.
If there is no premium-grade unleaded
gasoline available and regular-grade
unleaded gasoline may be used; please
observe the following precautions:
R only fill the fuel tank to half full with
regular-grade unleaded gasoline and fill
the rest with premium-grade unleaded
gasoline as soon as possible.
R do not drive at the maximum speed.
R avoid sudden acceleration.
R if the vehicle is carrying a light load, e.g.
two passengers without luggage, do not
allow the engine to rev above
3,000 rpm.
R if the vehicle is fully loaded or is being
operated in mountainous terrain, do not
depress the accelerator pedal further
than Ô of the pedal travel.
Flexible fuel vehicles
Important safety notes
Flexible fuel vehicles can be recognized by
the sticker on the inside of the filler flap.
Flexible fuel vehicles can be operated with
premium-grade unleaded gasoline and
ethanol (E85) or a mixture of both. Ethanol
fuel (E85) is a mixture of approximately 85%
ethanol and 15% unleaded gasoline.
GWARNING
Ethanol fuel (E85) and its vapors are highly
flammable, poisonous and highly
combustible. Ethanol fuel causes serious
injury if it ignites, if it comes into contact with
your skin or if you inhale the vapors. Avoid
inhaling ethanol vapors and ethanol coming
into contact with your skin. Before refueling,
extinguish all naked flames. Never allow
sparks or smoking materials near ethanol.
Changing the fuel type
For best performance and drivability, it is
recommended that you use either one or the
other fuel. Avoid alternating regularly
between the two different types of fuel.
When changing between the fuel types,
ensure that the following conditions are met:
R the fuel level is below half full.
R the fuel level is above the reserve level. This
is identifiable by the fuel tank reserve
warning lamp not being lit.
R you add more than 5 gallons (20 liters) of
fuel.
R you switch off the engine before refueling.
R the engine is started and runs for at least
five minutes immediately after refueling.
These precautions should prevent the
possibility of engine difficulties arising from
changing to a different fuel type.
If the engine still doesn't run correctly, refuel
with at least 3 US gal (12 l) of premium-grade
unleaded gasoline. This may improve the
running of the engine.
Service products and capacities347Technical dataZ

Refrigerant of the air-conditioning
system
The air-conditioning system is filled with
R134a refrigerant and a special PAG
lubricant.
! Never use refrigerant R 12 (CFC) or
mineral lubricants. Otherwise, you could
damage the air-conditioning system.
Brake fluid
GWARNING
Over a period of time, the brake fluid absorbs
moisture from the air; this lowers its boiling
point.
If the boiling point of the brake fluid is too low,
vapor pockets may form in the brake system
when the brakes are applied hard (e.g. when
driving downhill). This would impair braking
efficiency.
You should have the brake fluid renewed at
regular intervals. The brake fluid change
intervals can be found in the Service Booklet.
Only use brake fluid approved by Mercedes-
Benz. Information about approved brake
fluids can be obtained from any authorized
Mercedes-Benz Center or on the Internet at
http://bevo.mercedes-benz.com.
Coolant
Important safety notes
The coolant is a mixture of water and
antifreeze/corrosion inhibitor. It performs
the following tasks:
R corrosion protection
R antifreeze protection
R raising the boiling point
The engine cooling system is filled at the
factory with coolant that contains an
antifreeze/corrosion inhibitor that ensures
protection down to approximately -35 ‡
(-37 †).
! Only add coolant that has been premixed
with the desired antifreeze protection.
Otherwise, the engine could be damaged.
Further information on coolants and on
filling can be found in the Mercedes-Benz
Specifications for Service Products, MB
Approval 310.1, e.g. on the Internet at
http://bevo.mercedes-benz.com . You can
also consult an authorized Mercedes-Benz
Center.
! Always use a suitable coolant mixture,
even in countries where high temperatures
prevail.
Otherwise, the engine cooling system is not
sufficiently protected from corrosion and
overheating.
If the coolant has antifreeze protection down
to -35 ‡ (-37 †), the boiling point of the
coolant under operating conditions is
approximately 266 ‡ (130 †).
Your vehicle has a range of aluminum
components. Aluminum components in the
engine make it necessary to use antifreeze/
corrosion inhibitor coolant that has been
specifically formulated to protect the
aluminum parts. Using other antifreeze/
corrosion inhibitors without these
characteristics affects the service life.
The coolant must be used throughout the year
in order to maintain the necessary corrosion
350Service products and capacitiesTechnical data

protection and to provide protection from
overheating. In the Service Booklet, you can
find information on the intervals for renewal.
The renewal interval is determined by the
coolant type and the engine cooling system
design. The renewal interval in the Service
Booklet is only valid if the coolant is renewed
or filled up with Mercedes-Benz approved
products. Therefore, only use MB 325.0 or
326.0 anticorrosion/antifreeze or another
Mercedes-Benz approved product of the
same specification.
Information on other products with the same
specifications that are approved by
Mercedes-Benz can be obtained at an
authorized Mercedes-Benz Center or on the
Internet at http://bevo.mercedes-benz.com.
The coolant is checked at every maintenance
interval at an authorized Mercedes-Benz
Center.
The antifreeze/corrosion inhibitor
concentration in the engine cooling system
should:
R be at least 50%. This will protect the engine
cooling system against freezing down to
approximately -35 ‡ (-37 † ).
R not exceed 55% (antifreeze protection to
-49 ‡ [-45 † ]); otherwise, heat will not
dissipate as effectively.
If the coolant level is too low, MB 325.0 or
326.0 anticorrosion/antifreeze should be
added. Have the engine cooling system
checked for possible leaks.
Windshield/headlamp cleaning
system
GWARNING
Washer solvent/antifreeze is highly
flammable. Do not spill washer solvent/
antifreeze on hot engine parts, because it may
ignite and burn. You could be seriously
burned.
Use MB SummerFit windshield washer
concentrate at temperatures above freezing:XMix 1 part MB SummerFit with 100 parts
water.
Use MB WinterFit windshield washer
concentrate at temperatures below freezing:
XAt temperatures down to 14 ‡ ( Ò 10 †):
mix 1 part MB WinterFit with 2 parts water.XAt temperatures down to Ò 4 ‡ ( Ò 20 †):
mix 1 part MB WinterFit with 1 part water.XAt temperatures down to Ò 20.2 ‡
( Ò 29 †): mix 2 parts MB WinterFit with 1
part water.
! Only SummerFit and WinterFit can be
mixed. Otherwise, the jets could become
blocked.
Vehicle data
Please note that for the specified vehicle
data:
R the heights specified may vary as a result
of:
- tires
- load
- condition of the suspension
- optional equipment
Missing values were not available at time of
going to print.
All modelsVehicle length182.3 in (4630 mm )Vehicle width
including exterior
mirrors79.1 in (2008 mm)Vehicle height56.9 in (1444 mm)Wheelbase108.7 in (2760 mm )Front track60.7 in (1541 mm)Rear track60.8 in (1544 mm)Vehicle data351Technical dataZ