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
   Indicator of term of approach of planned maintenance (ASSYST)
   Schedule of routine maintenance
   General information on control
   Check of levels of liquids, control of leaks
   Check of a condition of tires and pressure in them. Designation of tires and disks of wheels. Rotation and replacement of wheels
   Replacement of impellent oil and oil filter
   Checks of brake system. Adjustment of the parking brake
   Check of fuel system
   Check of a condition and replacement of hoses of an impellent compartment, localization of leaks
   Check of a condition of ridge belts of a streaming drive of auxiliary units
   Check of functioning of system of cooling and frost resistance of cooling liquid. Liquid replacement
   Check of a condition of system of production of the fulfilled gases
   Check of level of oil of automatic transmission
   Visual control of a box of gear shifting on leakages of oil
   Condition check suspension bracket and steering component
   Check of a condition of protective covers of power shafts
   Check of level of liquid of system of hydrostrengthening of a wheel
   Check of level of liquid of system of adjustment of a road clearance
   Check of central air of air
   Cleaning of the mechanism of the movable panel of the hatch of a roof
   Visual control of a seat belt and safety cushion block
   Check of operability of headlights and horn
   Condition check, adjustment and replacement of brushes of screen wipers
   Check of a condition of the battery, care of it and charging
   Replacement of the battery of system of an emergency call of Tele-Aid
   Replacement of an element of the filter of air of salon / coal filter of purification of air
   Check, cleaning and greasing of the coupling device
   Replacement of brake liquid
   Check of the elastic coupling of the driveshaft
   Check and replacement of spark plugs. Check of a condition of high-voltage wires
   Replacement of an element of the air filter of the engine
   Replacement of the fuel filter
+ Engine
+ cooling and heating Systems
+ Power supply system and release
+ engine Electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment

Replacement of impellent oil and oil filter

Long contact of skin to the fulfilled impellent oil is quite dangerous. Use protective cream and put on gloves during carrying out this procedure. The clothes which have become impregnated with oil replace immediately.


Frequent replacement of impellent oil is the main preventive procedure of the service, to the available amateur mechanic. Eventually oil is subject to a razzhizheniye and pollution that conducts to premature wear of the engine.

Impellent oil can be extorted by means of a special probe (is available at filling stations) through a tube щупа measurements of level of oil. After that it is necessary to fill system with oil, as a rule.

Do not pour out the fulfilled oil together with a household waste or otherwise. It can cause environmental pollution.

Expediently at replacement of oil to fix on the engine a label with brand of oil and its viscosity.

Application of oils of various types adversely affects operation of the engine. It is not recommended to mix various brands of oils also. Impellent oils of the same type and brand, but various viscosity in necessary cases, in particular in inter-season period, can mix up.

Necessary tool:

· A viewing ditch or the hydrolift with supports (if oil is not sucked away).
· A head for an otvorachivaniye of a drain stopper.
· The special tool for a filter otvorachivaniye (a key for the filter, a tape key or the HAZET 2172 tool).
· Capacity for collecting oil (if oil is not sucked away) by capacity not less than 6 l.

Necessary spare parts and expendables:

· Only if oil is not sucked away: an aluminum or copper sealing ring for a drain stopper (are sometimes delivered together with the oil filter).
· Oil filter.
· Necessary amount of impellent oil. Apply the oil resolved by the manufacturer, address to Specifications.

Removal of impellent oil

Impellent oil can be removed with a vysasyvaniye method, through an opening щупа or is merged from the case pallet.

For an otsasyvaniye the corresponding pump is required. Thus it is necessary to watch that the hose corresponded to an opening and had sufficient length.

If oil is sucked away, pay attention to special remarks at the end of the section.

The volumes specified in Specifications are approximate. In any case it is necessary to check oil level by means of the index or the indicator on a control panel. The description provided below belongs first of all to the petrol engine. Differences for the diesel engine are given in the Section end.


1. Warm up the engine to working temperature. For this purpose start the engine and wait, that the temperature of cooling liquid on a control panel reached normal value or that the hose of a radiator got warm. After that pass not less than 5 km that the temperature of impellent oil reached a preset value.
2. Remove the top cover of the engine.

3. Unscrew a cover of the oil filter (1) by means of HAZET 2169 (2) and head key on 27 mm. On an illustration the engine 611 is shown.

4. Take out a cover of the oil filter with a filtering element.
5. Suck away oil by means of the special device through an opening for the level index.

 Concerning the engine 111.955 of the remark are provided in the Section end.

6. If the device for an oil otsasyvaniye available is not present, merge oil. For this purpose establish the car horizontally on supports or over a viewing ditch.

 Operation of lifting and car installation on supports is connected with danger! Therefore before carrying out operation familiarize with Poddomkrachivaniye's Section and Introduction towage to the management.

7. Remove the bottom cover of an impellent compartment, address to the Section Removal and installation of a cover of an impellent compartment from the bottom.

 Watch that at a reversing of a stopper of a drain opening hot impellent oil did not get on a palm.

8 Turn out a stopper (1) drain opening from the pallet of a case (2) and let's to oil merge completely.

9. Screw a stopper with new sealing laying and tighten the moment 30Нм.
10. Remove capacity with the merged oil from under the engine.

If in impellent oil in a large number metal shaving and wear products are found, it indicates possibility задиров, for example, damages of bearings of a cranked shaft and rods. For elimination of consequences of damages after repair of the engine it is necessary to clean oil channels and hoses carefully. Besides, in the presence of an oil radiator it is necessary to replace it.

11. Establish into place the bottom cover of an impellent compartment, address to the Section Removal and installation of a cover of an impellent compartment from the bottom.
12. Lower the car on wheels.

13. Replace a sealing ring (3).

14. Insert into a cover a new filtering element.
15. Screw a screw cover with a new sealing ring and tighten the moment 25Нм.

Oil filling


1. Open a cover (1) and fill in new oil through a branch pipe of a cover of a head of cylinders. (2) – index of level of oil.

It is recommended to pour in at first on Ѕ oil l less, than it is necessary, to warm up the engine and in some minutes to check oil level by means of the index of level (2), if necessary to add oil. Surpluses of oil are necessary for sucking away, laying or epiploons of the engine and the catalytic converter otherwise can be damaged.

2. Establish into place the top cover of the engine.
3. Pass on the car and check tightness of a stopper of a drain opening. If necessary carefully tighten a stopper.
4. Through 2 mines after an engine stop once again check oil level, if necessary modify it.
Engine 111.955: At an otsasyvaniye of oil keep in mind the following:
5. Before an otsasyvaniye disconnect a hose between a separator of oil and a directing pipe of the index of level by means of a clip, for example, HAZET-4590.
6. Suck away oil.
7. Remove a clip.

Do not forget to remove a clip since otherwise the separated oil will not flow down in the case pallet, it will be drained in by the engine and the measuring instrument of weight of air will be thus littered.