Mercedes S-Class W-220

since 1998 release

Repair and operation of the car

Mercedes W220
+ Mercedes-Benz cars of the class S (W220)
+ Operation manual
- Routine maintenance
   Active system of the warning of the term of approach planned THAT (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 motive oil and oil filter
   Check of the brake system
   Check of fuel system
   Check of a state and replacement of hoses of a motive compartment, localization of leaks
   Check of a condition of ridge belts of the streaming drive of auxiliary units
   Check of functioning of the cooling system 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 check of tightness of automatic transmission
   Check of a state component of a suspension bracket and steering
   Check of a condition of protective covers of power shafts
   Check of level of liquid of system of hydrostrengthening of a wheel
   Check of the air conditioning system
   Lubricant of limiters of doors and cylinder of the lock
   Visual control of a seat belt and block of a safety cushion
   Check of operability of headlights and horn
   Check of a state, adjustment and replacement of brushes of screen wipers
   Check of a condition of the battery, care of it and charging
   Replacement of an element of the filter of air of salon / coal filter of purification of air
   Replacement of brake fluid
   Check and replacement of spark plugs. Check of a condition of high-voltage wires
+ Engine
+ Cooling system and heating
+ Power supply system and release
+ Engine electric equipment
+ Automatic transmission
+ Power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Schemes of electric equipment

Check of level of liquid of system of hydrostrengthening of a wheel


1. Periodically check liquid level in system of hydrostrengthening of a wheel in order to avoid emergence of problems with management of the car, such as damage of the steering pump. Act as follows.

Do not hold a steering wheel turned against the stop in this or that party more than five seconds. It can put the steering pump out of action.

2. The tank of system of hydrostrengthening of a wheel is located in a motive compartment and has the unscrewing cover with the measuring probe which is built in in it.

3. Park the car on the flat platform and cock the parking brake.
Level of oil can be checked in a cold or heated-up state (since +50 °C). Here check in a cold state is described. Pay attention to the remarks provided in the end of the Section if the level of oil has to be checked in a heated-up state.
4. The car should not be heated-up, the engine should not work. Forward wheels have to stand directly.
5. Turn off a tank stopper by means of the screw-driver. For this purpose insert a screw-driver core into a stopper groove.
6. Wipe with a pure rag the index of level under a cover.
7. Manually screw and again turn off a stopper. Liquid level in the compensation tank depending on its temperature has to coincide with the corresponding zone of the index.
8 Liquid cold (at ambient temperature): level has to be in area - And - (cool).
Liquid at a working temperature (about +50 °C): level has to be in the hot area.
9. If necessary liquid level in the tank should be added. For addition of level use only new liquid as even the most insignificant impurity can lead to violation of work of hydraulic system.

 Attention! If liquid level in the tank fell below a zone, the corresponding temperature of liquid, steering with the hydraulic amplifier of the steering mechanism needs to be checked in a specialized workshop as liquid loss takes place. In this case it is not enough to be limited only to addition of level of liquid.