2011 MERCEDES-BENZ C-Class oil pressure

Engine oil (on-board computer) ...... 171
Outside temperature ...................... 167
Setting ........................................... 123
Theft deterrent locking system
Immobilizer ...................................... 66
Through-loading feature ................... 218
Tilt/sliding sunroof Opening/closing .............................. 88
Resetting ......................................... 88
Time (on-board computer) ................ 179
Timer (on-board computer) .............. 172
Tire pressure Calling up (on-board computer) .....277
Checking manually ........................275
Display message ............................ 197
Maximum ....................................... 280
Notes ............................................. 273
Pressure loss warning ....................275
Recommended ............................... 272
Tire pressure monitoring system
Function/notes ............................. 277
Restarting ...................................... 279
Warning lamp ................................. 212
Tires
Aspect ratio (definition) .................292
Average weight of the vehicle
occupants (definition) ....................290
Bar (definition) ............................... 290
Characteristics .............................. 290
Checking ........................................ 271
Cleaning ......................................... 272
Definition of terms .........................290
Direction of rotation ......................284
Distribution of the vehicle
occupants (definition) ....................293
DOT, Tire Identification Number
(TIN) ............................................... 289
DOT (Department of
Transportation) (definition) ............290
Flat tire .......................................... 254
GAWR (Gross Axle Weight Rating)
(definition) ..................................... 291
Guidelines to be observed .............271
GVW (Gross Vehicle Weight)
(definition) ..................................... 291
GVWR (Gross Vehicle Weight
Rating) (definition) .........................291Increased vehicle weight due to
optional equipment (definition) ......291
Kilopascal (kPa) (definition) ...........291
Labeling (overview) ........................286
Load bearing index (definition) ......292
Load index ..................................... 289
Load index (definition) ...................291
Maximum loaded vehicle weight
(definition) ..................................... 291
Maximum load on a tire
(definition) ..................................... 292
Maximum permissible tire
pressure (definition) ....................... 292
Maximum tire load .........................284
Maximum tire load (definition) .......291
Optional equipment weight
(definition) ..................................... 292
PSI (pounds per square inch)
(definition) ..................................... 292
Replacing ....................................... 286
Service life ..................................... 271
Sidewall (definition) .......................292
Speed index (definition) .................291
Storing ........................................... 272
Structure and characteristics
(definition) ..................................... 290
Temperature .................................. 285
TIN (Tire Identification Number)
(definition) ..................................... 292
Tire bead (definition) ......................292
Tire pressure (definition) ................292
Tire pressures (recommended) ......290
Tire size (data) ............................... 293
Tire size designation, load-bearing
capacity, speed index ....................287
Tire tread ....................................... 271
Tire tread (definition) .....................292
Total load limit (definition) .............293
Traction ......................................... 285
Traction (definition) .......................292
Tread wear ..................................... 285
Uniform Tire Quality Grading
Standards ...................................... 284
Uniform Tire Quality Grading
Standards (definition) ....................290
Unladen weight (definition) ............291
Wear indicator (definition) .............292
Wheel rim (definition) ....................291Index15BA 204 USA, CA Edition A 2011; 1; 5, en-UShereepeVersion: 3.0.3.62010-05-20T09:17:30+02:00 - Seite 15

Mounting a new wheelGWarning!
Always replace wheel bolts that are damaged
or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be
repaired immediately. Do not continue to
drive under these circumstances! Contact an
authorized Mercedes-Benz Center or call
Roadside Assistance.
Incorrect wheel bolts or improperly tightened
wheel bolts can cause the wheel to come off.
This could cause an accident. Make sure to
use the correct wheel bolts.
GWarning
Only use genuine Mercedes-Benz wheel bolts.
Other wheel bolts may come loose.
Do not tighten the wheel bolts when the
vehicle is raised. Otherwise, the vehicle could
fall off the jack.
GWarning
Make sure to use the original length wheel
bolts when remounting the original wheel
after it has been repaired.
XClean the wheel and wheel hub contact
surfaces.
! To prevent damage to the paintwork, hold
the wheel securely against the wheel hub
while screwing in the first wheel bolt.
XPlace the emergency spare wheel on the
wheel hub and push it on.XTighten the wheel bolts until they are
finger-tight.
Lowering the vehicle
XTurn the crank of the jack counter-
clockwise until the vehicle is once again
standing firmly on the ground.XPlace the jack to one side.XTighten the wheel bolts evenly in a
crosswise pattern in the sequence
indicated ( : to A). The tightening torque
must be 96 lb-ft (130 Nm) .GRisk of accident
Have the tightening torque checked
immediately after a wheel is changed. The
wheels could come loose if they are not
tightened to a torque of 96 lb-ft (130 Nm).
XTurn the jack back to its initial position and
store it together with the rest of the vehicle
tool kit in the trunk/cargo compartment.XTransport the faulty wheel in the trunk/
cargo compartment.
or
XDepending on the size of the wheel, you
may also be able to secure the faulty wheel
in the spare wheel well. In this case, you
will have to remove the stowage well casing
from the spare wheel well and stow it
securely in the trunk/cargo compartment.
i When you are driving with the collapsible
spare wheel mounted, the tire pressure
loss warning system or the tire pressure
258Flat tireBreakdown assistance
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Depending upon the weather and/or road
surface (conditions), the tire traction varies
widely.
Do not use tires until they are excessively
worn as the tire traction on wet road surfaces
decreases significantly when the tread depth
is less than 1
/ 8 in (3 mm).
Tread wear indicators (TWI) are required by
law. Six indicators are positioned over the tire
tread. They are visible as soon as a tread
depth of approximately 1
/ 16 in (1.6 mm) is
reached. If this is the case, the tire is so worn
that it must be replaced.
The recommended tread depth for summer
tires is at least 1
/ 8 in (3 mm). The
recommended tread depth for winter tires is
at least 1
/ 6 in (4 mm).
Bar marking
: for tread wear is integrated
into the tire tread.
Storing tires
Store tires that are not being used in a cool,
dry and preferably dark place. Protect the
tires from contact with oil, grease and fuel.
Cleaning tires
GWarning
Do not use power washers with circular jet
nozzles (concentrated-power jets) to clean
your vehicle, especially for cleaning tires. You
could otherwise damage the tires and cause
an accident.
Tire pressures
Recommended tire pressures
GWarning
Follow recommended tire inflation pressures.
Do not underinflate tires. Underinflated tires
wear excessively and/or unevenly, adversely
affect handling and fuel economy, and are
more likely to fail from being overheated.
Do not overinflate tires. Overinflated tires can
adversely affect handling and ride comfort,
wear unevenly, increase stopping distance,
and result in sudden deflation (blowout)
because they are more likely to become
punctured or damaged by road debris,
potholes etc.
Do not overload the tires by exceeding the
specified load limit as indicated on the Tire
and Loading Information placard on the
driver's door B-pillar. Overloading the tires
can overheat them, possibly causing a
blowout. Overloading the tires can also result
in handling or steering problems, or brake
failure.
You will find a table of recommended tire
pressures on the Tire and Loading
Information placard on the B-pillar on the
driver's side ( Y page 280). You will find a
table of tire pressures for various operating
conditions on the inside of your vehicle's fuel
filler flap.
Use a suitable pressure gauge. The outer
appearance of a tire does not permit any
reliable conclusion about the tire pressure.
On vehicles equipped with the electronic tire
pressure monitor, the tire pressure can be
checked using the on-board computer.
GWarning
Should the tire pressure drop repeatedly:
272Tire pressuresTires and wheels
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Increased vehicle weight due to
optional equipment
This is the combined weight of all standard
and optional equipment available for the
vehicle, regardless of whether it is actually
installed on the vehicle or not.
Wheel rim
This is the part of the wheel on which the tire
is mounted.
GAWR (Gross Axle Weight Rating)
The GAWR is the maximum gross axle weight
rating. The actual load on an axle must never
exceed the gross axle weight rating. The
gross axle weight rating can be found on the
vehicle identification plate on the B-pillar on
the driver's side.
Speed index
The speed index is part of the tire
identification. It specifies the speed range for
which the tire is approved. Specifies the
speed range for which the tire is approved.
GVW (Gross Vehicle Weight)
The gross vehicle weight includes the weight
of the vehicle including fuel, tools, the spare
wheel, accessories installed, occupants,
luggage and the drawbar noseweight if
applicable. The gross vehicle weight must not
exceed the gross vehicle weight rating GVWR
as specified on the vehicle identification plate
on the B-pillar on the driver's side.
GVWR (Gross Vehicle Weight Rating)
The GVWR is the maximum permissible gross
weight of a fully loaded vehicle (the weight of
the vehicle including all accessories,
occupants, fuel, luggage and the drawbar
noseweight if applicable). The gross vehicle
weight rating is specified on the vehicle
identification plate on the B-pillar on the
driver's side.
Maximum loaded vehicle weight
The maximum weight is the sum of the
unladen weight of the vehicle, the weight of
the accessories, the maximum load and the
weight of the optional equipment installed at
the factory.
Kilopascal (kPa)
Metric unit for tire pressure. 6.9 kPa is the
equivalent of 1 psi. Another unit for tire
pressure is bar. 100 kilopascal (kPa) is the
equivalent of 1 bar.
Load index
In addition to the load bearing index, the load
index may also be imprinted on the sidewall
of the tire. This specifies the load bearing
capacity more precisely.
Unladen weight
The weight of a vehicle with standard
equipment including the maximum capacity
of fuel, oil and coolant. It also includes the air-
conditioning system and optional equipment
if these are installed on the vehicle, but does
not include passengers or luggage.
Maximum tire load
The maximum tire load in kilograms or
pounds is the maximum weight for which a
tire is approved.
Definitions for tires and loading291Tires and wheelsBA 204 USA, CA Edition A 2011; 1; 5, en-UShereepeVersion: 3.0.3.62010-05-20T09:17:30+02:00 - Seite 291Z

All of these mix fuels must fulfill the fuel
requirements, e.g.:
R knock resistance
R boiling point
R vapor pressure
Additives in gasoline
One of the major problems in engine design
is the creation of carbon deposits during the
process of burning fuel. Mercedes-Benz
recommends that you use fuel brands that
have the additives which prevent the build up
of carbon deposits.
If you use fuels without these additives for a
longer period of time, there may be a build up
of carbon deposits, especially on the inlet
valves and in the combustion chamber.
This could lead to engine running problems,
e.g.:
R warm-up hesitation
R unstable idle
R knocking/pinging
R misfire
R power loss
In areas where carbon deposits may be
encountered due to lack of availability of
gasoline which contains these additives,
Mercedes-Benz recommends the use of
additives approved for use in Mercedes-Benz
vehicles.
Consult an authorized Mercedes-Benz Center
or visit http://www.mbusa.com (USA only)
to view a list of approved products. Observe
the instructions for use on the product label.
Do not mix other fuel additives with fuel. This
causes unnecessary costs and could damage
the engine.
! Do not refuel with low-grade fuel and do
not use fuel additives that are not tested
and approved for Mercedes-Benz vehicles.
Damage or malfunctions can result that are
not covered:
R by the Mercedes-Benz Limited Warranty
R by an existing Limited Warranty
R by an extended Limited Warranty
Engine oil
Points to remember
The engine oils are matched to the
performance of Mercedes-Benz engines and
service intervals. For this reason, only use
engine oils and oil filters that are approved for
vehicles with a service system.
Contact an authorized Mercedes-Benz Center
or visit http://www.mbusa.com (USA only)
for a list of approved engine oils and oil filters.
! Never use engine oil or an oil filter of a
specification other than is necessary to
fulfill the prescribed service intervals. Do
not change the engine oil or oil filter in
order to achieve longer replacement
intervals than those prescribed. Otherwise,
you may cause damage to the engine or
exhaust gas aftertreatment; this is not
covered by the Mercedes-Benz Limited
Warranty.
Follow the instructions in the service
interval display regarding the oil change.
Otherwise, you may damage the engine and
the exhaust gas aftertreatment.
Mercedes-Benz recommends MOBIL OIL.
The table shows which engines oil have been
approved for your vehicle.
ModelEngine
modelMB
ApprovalC 250 48272229.5C 250 4MATIC 48272229.5C 300272229.5C 300 4MATIC272229.548
Canada only.308Service products and capacitiesTechnical data
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