Get Maintenance and care -> Engine compartment Guide for Mercedes C Class 4 Door Second Generation (2007-2013)

Aqualified specialist workshop, e.g. an

authorized Mercedes-BenzCenter, will reset

the ASSYST PLUS service interval display

after the service work has been carried out.

You can also obtain further information on

maintenance work, for example.

Special service requirements

The specified maintenance interval takes only

the normal operation of the vehicle into

account. Under arduous operating conditions

or increased load on the vehicle,

maintenance work must be carried out more

frequently, for example:

regular city driving with frequent

intermediate stops

if the vehicle is primarily used to travel

short distances

use in mountainous terrain or on poor road

surfaces

if the engine is often left idling for long

periods

Under these or similar conditions, have, for

example, the air filter, engine oil and oil filter

replaced or changed more frequently. Under

arduous operating conditions, the tires must

be checked more often. Further information

can be obtained at a qualified specialist

workshop, e.g. an authorized Mercedes-Benz

Center.

Driving abroad

An extensive Mercedes-Benz Service network

is also available in other countries. You can

obtain further information from any

authorized Mercedes-BenzCenter.

Engine compartment

Hood

Important safety notes

WARNING

If the hood is unlatched, it may open up when

the vehicle is in motion and block your view.

There is a risk of an accident.

Never unlatch the hood while driving.

WARNING

When opening and closing the hood, it may

suddenly fall into the closed position.There is

a risk of injury to persons within range of

movement of the hood.

Open and close the hood only when no one is

within its range of movement.

WARNING

Certain components in the engine

compartment, such as the engine, radiator

and parts of the exhaust system, can become

very hot. Working in the engine compartment

poses a risk of injury.

Where possible, let the engine cool down and

touch only the components described in the

following.

WARNING

Opening the hood when the engine is

overheated or when there is a fire in the

engine compartmentcould expose you to hot

gases or other service products. There is a

risk of injury.

Let an overheated engine cool down before

opening the hood. If there is a fire in the

engine compartment, keep the hood closed

and contact the fire department.

WARNING

The engine compartment contains moving

components. Certain components, such as

the radiator fan, may continue to run or start

again suddenly when the ignition is off. There

is a risk of injury.

Engine compartment

283

Maintenance and care

If you need to do any work inside the engine

compartment,

switch off the ignition

never reach into the area where there is a

risk of danger from moving components,

such as the fan rotation area

keep clothing away from moving parts

WARNING

The ignition system and the fuel injection

system work under high voltage. If you touch

components which are under voltage, you

could get an electric shock. There is a risk of

injury.

Never touch components of the ignition

system or fuel injection system when the

ignition is switched on.

Opening the hood

WARNING

The windshield wipers and wiper linkage

could be set in motion.

When the hood is open, you or others could

be injured by the wiper linkage.

Make sure that the windshield wipers are

switched off. Remove the SmartKey or make

sure that no ignition positionhas been

selected with KEYLESS-GO. All indicator

lamps must be off in the instrument panel.

Make sure that the windshieldwipers are

not folded away fromthe windshield. You

could otherwise damage the windshield

wipers or the hood.

Make sure that the windshield wipers are

turned off.

Pull release lever : on the hood.

The hood is released.

Reach into the gap, pull hood catch

handle ; up and lift the hood.

If you lift the hood by approximately

15 inches (40cm), the hood is opened and

held open automatically by the gas-filled

strut.

Closing the hood

Lower the hood and let it fall from a height

of approximately 8 in (20 cm).

Check that the hood has engaged properly.

If the hood can be raised slightly, it is not

properly engaged. Open it again and close

it with a little more force.

Engine oil

General notes on the oil level

Depending on the driving style, the vehicle

consumes up to 0.9 US qt (0.8 liters)of oil

over adistanceof600 miles (1,000 km). The

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Engine compartment

Maintenance and care

oil consumption may be higher than this when

the vehicle is new or if you frequently drive at

high engine speeds.

Depending on the engine, the oil dipstick may

be in a different location.

When checking the oil level:

park the vehicle on a level surface.

the engine should be switched off for

approximately five minutes if the engine is

at normal operating temperature.

if the engine is not at normal operating

temperature, e.g. if the engine was only

started briefly: wait about 30 minutes

before carrying out the measurement.

Checking the oil level using the oil

dipstick

Park the vehicle on a level surface.

To check the oil level with the engine at

operating temperature, switch the engine

off and wait for approximately five minutes.

Pull oil dipstick : out of the dipstick guide

tube.

Wipe off oil dipstick :.

Slowly slide oil dipstick : into the guide

tube to the stop, and take it out again.

If the level is between MIN mark = and

MAX mark ;, the oil level is correct.

If the oil level has dropped to MIN mark

= or below, add 1.1 US qt (1.0 liter) of

engine oil.

Adding engine oil

WARNING

If engine oil comes into contact with hot

components in the engine compartment, it

may ignite. There is a risk of fire and injury.

Make sure that engine oil is not spilled next

to the filler neck. Let the engine cool down

and thoroughly clean the engine oil off the

components before starting the engine.

Environmental note

When adding oil, take care not to spill any. If

oil enters the soil or waterways, it is harmful

to the environment.

Only use engine oils and oil filters that

have been approved for vehicles with a

service system. You can obtain a list of the

engine oils and oil filters tested and

approved in accordance with the

Mercedes-Benz Specifications for Service

Products at any Mercedes-Benz Service

center.

Damage to the engine or exhaust system is

caused by the following:

using engine oils and oil filters that have

not been specifically approved for the

service system

replacing engine oil and oil filters after

the interval for replacement specified by

the service system has been exceeded

using engine oil additives.

Do not add too much oil. If the oil level is

above the "max" mark on the dipstick, too

much oil has been added. This can lead to

damage to the engine or the catalytic

converter. Have excess oil siphoned off.

Engine compartment

285

Maintenance and care

Example: engine oil cap

Turn cap : counter-clockwise and remove

it.

Add engine oil.

If the oil level is at or below the MIN mark

on the oil dipstick, add 1.1 US qt (1.0 liter)

of engine oil.

Replace cap : on the filler neck and turn

clockwise.

Ensure that the cap locks into place

securely.

Check the oil level againwith the oil

dipstick (Y page 285).

Further information on engine oil

(Y page 351).

Checking and adding other service

products

Checking coolant level

WARNING

The engine cooling system is pressurized,

particularly when the engine is warm. When

opening the cap, you could be scalded by hot

coolantspraying out. There is a risk of injury.

Let the engine cool down before opening the

cap. Wear eye and hand protection when

opening the cap. Open the cap slowly half a

turn to allow pressure to escape.

Only checkthe coolant level when the vehicle

is on a level surface and the engine has cooled

down.

Turn the SmartKey to position 2 in the

ignition lock (Y page 141).

On vehicles with KEYLESS-GO, press the

Start/Stop button twice (Y page 142).

Check the coolant temperature display in

the instrument cluster.

The coolant temperature must be below

158 ‡ (70 †).

Slowly turn cap : half a turn counter-

clockwise and allow excess pressure to

escape.

Turn cap : further counter-clockwise and

remove it.

If the coolant is at the level of marker bar

= in the filler neck when cold, there is

enough coolant in coolant expansion

tank ;.

If the coolant level is approximately 0.6 in

(1.5 cm) above marker bar = in the fuel

filler neck when warm, there is enough

coolant in expansion tank ;.

If necessary, add coolant that has been

tested and approved by Mercedes-Benz.

Replace cap : and turn it clockwise as far

as it will go.

For further information on coolant, see

(Y page 352).

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Engine compartment

Maintenance and care

Maintenance and care -> Engine compartment for Your Mercedes C Class 4 Door Second Generation (2007-2013)

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