Mercedes S-Class W-140

In 1991-1999 editions

Repair and enterprise of the car



Mercedes S-Class
+ Mercedes Benz cars of the class S (W-140)
+ Operation manual
- Routine maintenance
   Specifications
   Active system of the prevention to entrance term systematically THAT (ASSYST)
   Planned schedule of routine maintenance
   General information on vote
   Check of levels of liquids, control of a vytecheniye
   Check of a condition of tires and pressure in them, the name of tires and Disks of wheels, rotation of wheels
   Compensation of engine oil and fat filter
   Check of the brake system
   Check of system of fuel, compensation of the filter for fuel
   Check of a state and compensation of hoses of motor office, localization of a vytecheniye
   Check of a condition of ridge serpantinnogo belts of an incentive of auxiliary devices
   Check of functioning of the cooling system and frost resistance of the cooled liquid, compensation of liquid
   Check of a condition of system of the edition of the working gases
   Check of the ATF level, compensation of the AT filter
   visuale check of density of automatic transmission
   Check of a condition of the Aufhängung components and management
   Check of a condition of protective caps of power shafts
   Check of the air conditioning system
   Lubricants of limiters of doors and cylinders of locks
   visuale control of a seat belt and block of an inflatable safety cushion
   Check of operability of searchlights and klaksona
   Check of a state, regulation and compensation of brushes of screen wipers
   Check of a condition of the battery, its leaving and loading
   Compensation of salonnogo of the filter
   Compensation of brake fluid
   Check and compensation of spark plugs, check of a condition of high-voltage lines (petrol models)
+ motor
+ cooling systems, heating
+ systems of power supply and edition
+ electric equipment of the motor
+ gear shifting boxes
+ Awtomatitscheckaja transmission
+ connection
+ brake system
+ Aufhängung and management
+ body
+ electric onboard equipment


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Check of levels of liquids, control of a vytecheniye

Lower than the procedure of check of level of liquids which are made each 400 km of the movement or weekly described. It is possible to find the description of other checks of levels of liquid further in offices which are devoted to specific procedures of service. Irrespective of check intervals you do not allow after the planned schedule that liquid followed under car, - designates a similar vytecheniye on defect, is necessary to delete it at once.

When checking level of any working liquid the car has to be strictly horizontally!


Liquids are a not deprived component of the Schmierens systems, cooling, brake and the Umfließens systems of a windshield. Because of gradual costs it is necessary for und\oder of pollution of liquids to replace during the normal enterprise of the car them periodically., Before beginning to liquid doliwaniju in some the listed components you study requirements of specifications to types and volumes of the used liquids.

Engine oil

visuale control of a vytecheniye

At samaslennom the motor and big costs of oil you check places of the most probable development of a vytecheniye:
  • You check uplotnitelnyj a neck saliwnoj cover element, - for existence on existence of cracks and other mechanical damages;
  • Components of system of ventilation kartera (including - a ventilation hose which goes from a cover of the head of cylinders to a hose of Aufsaugens of air);
  • Transferring of a cover of the head of cylinders;
  • Transferring of the head of cylinders;
  • uplotnitelnoje motor kartera peel drain stopper ring;
  • Transferring of the fat filter, - you study the place of a request of the filter to a flange attentively;
  • Transferring of a peel of kartera.
  • Forward and back networks of a bent shaft.
  • Turn the generator in polyethylene, opryskajte the motor of usual cold cleaner, - then, short time around, - erase you to water on autolinen.

    You strew borders of the connected surfaces and uplotnitelnyje elements of the power plant outside from lime or talkom.

    Check oil level if dolejte is necessary.

    During shortly (about 30 km) trips (it would be desirable after the bystry route) you heat the motor, - the warmed-up oil differs in the increased fluidity and easier Dichtlosigkeit filters.

    Saparkujte the car and, yourself from a lamp including, you investigate the motor for the purpose of localization of sources of a vytecheniye of oil.

    Remove the reasons of development of a vytecheniye.

    Check of level

    The maximum admissible costs of engine oil form 1 l / in 1000 kilometer, real level of consumption of oil depends on a manner, - the frequent movement with high changes of the motor leads to increase in costs of oil.

    Information on the principle of functioning of a control lamp of level of engine oil is provided in office a combination of devices, measuring devices both control lamps, and light indicators главы operation manual


    About dangerous ambushes of level of engine oil of the driver a control lamp (watch office notifies the operation manual is established in installation of the lock of ignition a combination of devices, measuring devices both control lamps, and light indicators of the head). The touch switch of level of oil will be under car, in the right forward corner of a peel of kartera of the motor interrupted.


    Position saliwnoj of a neck and schtschupa of measurement of level of engine oil on the S280 and S320 models

    1 — Schtschup


    Position saliwnoj of a neck and schtschupa of measurement of level of engine oil on the S300TDI models


    1 — a neck
    2 — Schtschup


    Position saliwnoj of a neck and schtschupa of measurement of level of engine oil on the S420 and S500 models

    1 — Schtschup
    2 — a neck


    Position saliwnoj of a neck and schtschupa of measurement of level of engine oil on the S600 models

    1 — Schtschup
    2 — a neck


    Check of level of engine oil is made by means of measuring schtschupa, prodetogo in the judging listener and is lowered in the motor to the lower point of its peel kartera. Check of level of oil has to be made before the first in the present day trips, or later approximately in 5 minutes after a motor break. If to fill check right after a motor exception, its results will not reflect adequately a situation as a part of oil will appear separately after internal galleries and components of the motor.

    Pull out measuring schtschup from the judging listener and nassucho you wipe its edge of the pure old ragamuffin or a paper handkerchief. Correct schtschup back in the listener before blow, then again you pull out. schtschupa edge seen, you estimate the size of the land plot moisturized with oil. Level of oil has to be between the top and lower notes on schtschupa edge. As a last resort dolejte in the motor the corresponding amount of oil of the necessary grade.


    Immersion of level from a frame of the lower bound of admissible volume leads to development of fat Hungerns of the motor, threateningly from serious mechanical damages of the last. Also try not to pour oil it above as the top note as it can lead to sabrassywaniju of spark plugs or accident of networks of the power plant owing to the increased increase in pressure.

    Around oil in the motor has to fill in the cover of saliwnoj of a neck equipped with the work of a slice to be diminished. In prevention of rasbrysgiwanija of oil during its gas station in the motor you use a funnel, or maslenkoj with long nossikom from. Oil fills in, you firmly tighten nawernite and a cover of saliwnoj of a neck, then you start the motor and attentively you look at existence of signs of a vytecheniye to traffic jams of a drain and the surface of the fat filter connected with the block.

    Deafen the motor, oboschdite is 5-10 minutes old during which oil will be pulled together in a peel, then you double-check level.

    It is necessary to pull together abundance oil or to extort, - the increased level of engine oil can be a cause of accident of the catalytic reformer. Pursue reliability of a delay of a cover of saliwnoj of a neck.


    Check of level of engine oil is an important preventive procedure of service of the motor. Constant immersion of level demonstrates existence of a vytecheniye of oil owing to accident of networks, damage of uplotnitelnych of transferrings, sale of piston rings or judging banks of gates. If oil reminds milk after color or a consistence, or drops of water are present there, it speaks about possible damage of transferring of the head of cylinders, or formation of cracks in a head body (OK) or the block. Check has to be made urgently. During measurement of level of oil always you check also its state. It is a lot of and specifying from fingers you are diminished from schtschupa edge oil traces, - in case of presence there of small metal particles oil is subject to compensation (watch office compensation of engine oil and the fat filter).

    The cooled motor liquid

    Do not allow a means meeting against a cold injury on the open land plots of a body and the painted surfaces of the car.

    You erase casual drops from enough water urgently.

    They remember that means against a cold injury is a poisonous liquid and a meeting in an organism even in small payment threateningly from the most serious consequences, to a lethal exit in the highest step.

    You never give means against a cold injury from kept in leaky closed packing, collect the cooled liquid spilled on a floor urgently.

    They remember that sladkowatyj a means smell against a cold injury to itself can lift attention of children and animals.

    About ways you advise to yourself use of thoroughly working cooled liquid at local authorities, - in many regions of the world special points after acceptance of various study of gegestaltet.

    You do not pull together the old cooled liquid in the sewerage and on the earth at all!

    It were nonpoisonous grades of means against a cold injury, despite it, them also lately is developed have to be implemented in an organized order



    All cars which are considered in this manual, from the compensation cooling system, equipped working with an excess pressure. The white expanding plastic container is located in motor office and connected by a hose with the heater.

    Depending on heating of the motor during its work the vast cooled liquid fills a container. When cooling the motor the cooled liquid automatically works back in the cooling system that guarantees to maintenance of constant value of its level. About dangerous ambushes of level of cooled driver's liquid a control lamp (watch office notifies the operation manual is made in structure of a combination of devices a combination of devices, measuring devices both control lamps, and light indicators of the head). The touch switch of level of the cooled liquid will be in the lower part of the expanding container of the cooling system interrupted.


    Check of level of the cooled liquid in a container regularly has to be made, at strictly horizontal position of the machine and the excluded motor. In a cold condition of the cooled liquid its level up to a note has to go "MINUTE" in the expanding container. In a hot condition of the cooled liquid level has to be 1.5 cm higher, for example, on. As a last resort you make the corresponding correction, - you supplement 40%/60% of mix of means against a cold injury on the basis of ethylene glycol with water (watch specifications).

    Banish the car and again you measure the level of the cooled liquid. If to the necessary dolit level only of small amount of the cooled liquid demand, then it is possible to use clear water for this purpose. However, frequent additions of water will dilute means against a cold injury. To guarantee around the normal relation of means against a cold injury and water, always doliwajte to necessary level with the necessary mix.

    If the level of the cooled liquid regularly falls, then existence of Ausfließens is possible in system. See the heater, hoses, a cover of saliwnoj of a neck, a stopper of a drain and the water pump (in address office to check of functioning of the cooling system and frost resistance of the cooled liquid, compensation of liquid). If it is not spread over a vytecheniye, make check of density of a cover of the expanding container and the heater in the conditions of 100.

    If you have to accept a cover, expect until the motor does not cool down completely, then you wrap a piece of thick old tatters around a cover and you prevent them up to the first support. If begins to escape at the same time from a cover of couple or the cooled liquid, allow the motor a little more that it cooled down, and only you accept then a cover.

    It is necessary to check also a condition of the cooled liquid. It has to be rather pure. If liquid has brown or rusty color, it is necessary to pull together them to erase system and, to fill its new mix. Even if the cooled liquid looks normal, the brake materials of corrosion coming to structure lose efficiency over time therefore it is necessary to replace it is necessary for certain periods.

    For check of frost resistance of the cooled areometr liquid it is necessary to use.

    Brake fluid

    Brake fluid can threaten your eyes and damage the painted surfaces of the car therefore you are extremely careful in the treatment of her. Do not use brake fluid which looked open long time or which is it as year more. Brake fluid has a quality to absorb humidity from air that can lead to dangerous loss of efficiency of the brake system. Use only the recommended type of brake fluid. Mixing of various types of liquid can lead to failure of the brake system.


    The main cylinder of the brake system is defined in a back left corner of motor office. Wear notifies on ambushes of level of brake fluid of the driver the office a combination of devices in a combination of devices of a control lamp (look which, measuring devices both control lamps, and light indicators in the head the operation manual) is established poplawkowyj their touch switch in a cover of the container GTZ are established.

    Level of brake fluid becomes optical, checked after signs on a plastic container which is defined on the main cylinder. Level of liquid has to be between signs of MAX and "MINUTE". If it is admissible lower than the level, wipe the top part of a container and a cover of the pure old ragamuffin at first to prevent a dirt meeting in system after removal of a cover. Dolejte to the necessary level of the recommended liquid, but you do not pour.

    Until the cover of a container is not accepted, check liquid and a container of the main cylinder for existence of pollution. If there particles of a rust are present, is necessary dirt or drops of water to pull together liquid from system and, to fill in new.

    After addition of a container to necessary level you are convinced that the cover is defined just, for prevention of a vytecheniye of und\oder liquid of a meeting of dirt.

    Liquid level in the main cylinder will fall owing to sale of overlays of friction of Bremsleistens a little. There is no need of its doliwat until level does not remain along with it signs "MINUTE"; it will rise after compensation of slips. Very low level can designate on Bremsleistens sale. Check them for sale existence (watch office check of the brake system).

    If the level of brake fluid constantly falls, at once you check all system for existence of a vytecheniye. Check brake lines, hoses and schtuzernyje of association, together with supports, to cylinders of a wheel and the main cylinder (check of a state and compensation of hoses of motor office, localization of a vytecheniye address later offices to check of the brake system).

    If when checking level of liquid the container is empty or almost empty, the brake system has to be checked for existence of a vytecheniye and prokatschana (address heads to connection and to the brake system).

    Liquid of system of hydro-strengthening of a steering wheel (GUR)

    If it is liquid level in a container a zone which corresponds to liquid temperature below, it is necessary to check management with the hydraulic amplifier of the tax mechanism in the allocated workshop as loss of liquid is available. In this case it is necessary to be limited insufficiently only to addition of level of liquid.


    Check of level of GUR liquid on the models equipped with motors of a series 104 and 119

    30 — the container GUR
    30s — Plastregister


    Check of level of GUR liquid is made at a temperature about 20 °C. Level of liquid has to be between notes "MINUTE" and "scope" of Plastregisters of a container / (except the models equipped with series 120 motors) / edges of the container constructed in a cover measuring schtschupa (model by means of series 120 motors). The full volume of a container forms 1.4 l.

    Information on correction of level of GUR liquid for diesel models was not provided at the time of drawing up the modern guide of producers, the principle is similar above for petrol engines is described.

    Omywatelja liquid reel up glasses / lens of searchlights

    The concentrate of stekloomywajuschtschego of means is easily lit! In the address with a means stekloomywajuschtschego concentrate the appendix of fire, naked flame and smoking are forbidden.


    Liquid for washing of a windshield is brought in a plastic container in the right forward corner of motor office. saliwnaja a neck of a container is removed in the peredka panel and is between the right searchlight of the block and the heater. Power of a container is specified in specifications.


    Wear notifies on ambushes of level of cooled driver's liquid is established in a combination of devices of a control lamp (watch office a combination of devices, measuring devices both control lamps, and light indicators of the head the operation manual). The touch switch of a control lamp is constructed in the top part of a container of the cooled liquid.


    In areas with a temperate climate the system from usual water can be corrected, but recommended to supplement in water By means of for washing of glasses (the summer concentrate of megawatts has a marking of S). The container should not be filled more than on 2 thirds that the free room in case of expansion of water when freezing remained. In areas with cold climatic conditions it is necessary for washing of a windshield (marking of W) to use a special concentrate reducing a freezing point of liquid which can be got in any business of automobile accessories. Usually it is on sale the concentrated or ready look. If you got the concentrated means against a cold injury, mix it with water according to the instruction of the producer on packing.

    Do not use means against a cooling system cold injury - it will damage the painted surfaces of the car!