Mercedes C-Class

W203 since 2000 of release

Repair and car operation

+ Mercedes-Benz Cars of a class C (W-203)
+ Operation manual
+ Routine maintenance
+ Engine
+ cooling and heating Systems
- Power supply system and release
   + Power supply system of the petrol and diesel engine
   + System of injection of fuel of the petrol engine
   + System of injection of fuel of the diesel engine. Turbokompressor
   + Systems of release and decrease in toxicity of the fulfilled gases. Turbokompressor
+ engine Electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment

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Power supply system and release

 Separate characteristics are provided also in the text of Head and in case of obligation of their performance are allocated with a bold print


Fuel tank, l



including fuel reserve


Petrol models

Unleaded gasoline is not worse AI-95/A-85, probably temporary application of unleaded gasoline is not worse AI-91/A-82.5. Thus engine capacity will decrease a little, at increase in fuel consumption

Do not apply an additive to fuel. They can result in the increased wear or engine damage.

Diesel models

Summer and winter diesel fuel

No. 2 or No. 1 on ASTM D975

Do not apply ship (Marine Diesel Fuel), boiler, etc. diesel fuel.

When using diesel fuel with the content of sulfur over 0.5 %, make replacement of impellent oil each 10000 km.

Winter fuel, provides normal working capacity to - 20°С.

Thanks to preliminary heating of fuel at the included system of heating of the car, the car on winter diesel fuel can be maintained, as a rule, without refusals at temperature of external air to - 25°С.

Do not add gasoline to diesel fuel.

In case of application of summer diesel fuel, and also at temperature of external air is lower - 15°С to fuel it is necessary to add certain, depending on temperature of external air quantity of means for fluidity or kerosene improvement.

Means for improvement of fluidity can be used also in a combination to kerosene.

You can receive the certificate of funds on HUNDRED Mercedes-Benzs.

The additive share taking into account temperature of external air should be minimum.

The share of kerosene in a mix should make no more than 50 %.

Additive add to diesel fuel before loss of property of fluidity of diesel fuel owing to paraffin allocation. Owing to allocation of paraffin it is possible to eliminate malfunctions only with heating of all power supply system.

Mixing of diesel fuel with kerosene carry out only in a fuel tank. For this purpose in a tank at first fill in kerosene, and then add diesel fuel.

After that the engine should work some time in order that the mix was distributed on all power supply system.


Additives of kerosene lead to decrease in a point of ignition of diesel fuel. Thereof danger at the address with a fuel mix increases. Observe the corresponding safety regulations!

System of injection of the petrol engine

Electronic microprocessor system of the distributed injection of HFM with a thermometric measuring instrument of weight of soaked-up air. The inlet pipeline with changeable geometry

System of injection of the diesel engine

Electronic, microprocessor, with direct injection from the general distributive highway of "Common-Rail", a turbokompressor and cooling of blown air

Pressure of fuel, Atm

Petrol engines, with the connected vacuum


with the disconnected vacuum


Falling pressure

Right after an engine stop


In 30 minutes.


Productivity of the fuel pump

1 l/35 of second

The content in the fulfilled gases at full loading

Petrol CO2 engines, %


Diesel CO2 engines, %


Diesel engine Dymnost, no more


O2, %


WITH in an exhaust pipe, %

Max. 0.5



The contents WITH on 2800-3100 rpm



Value lambda




Dual chain from a crankshaft asterisk

Injection moment

It is established by means of the control probe, the piston of the 1st cylinder of the engine should be in VMT

Idling turns, in mines

Adjustment of number of turns of idling within maintenance is not required.

Diesel engine 611


Diesel engine 612


Restriction of turns, in minute.


Efforts of a tightening of carving connections, Nanometer

The moments of an inhaling of fixture are given also in the text of Head and on some иллюстрациях*.

*vydelenny in the text a bold print the moments of an inhaling are subject to exact observance; the efforts not allocated with a bold print are given only roughly.

Nozzle clip

7Нм +90 °

Cap nut of the pipeline of a nozzle


TNVD gear wheel


TNVD flange


TNVD fastening


Reception pipe to a final collector


Arm to transmission