Mercedes S-Class W-140

1991-1999 of release

Repair and operation of the car

Mercedes S-Class
+ Mercedes-Benz cars of the class S (W-140)
+ 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 of wheels
   Replacement of motive oil and oil filter
   Check of the brake system
   Check of fuel system, replacement of the fuel filter
   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 the ATF level, replacement of the AT filter
   Visual check of tightness of automatic transmission
   Check of a condition of components of a suspension bracket and steering
   Check of a condition of protective covers of power shafts
   Check of the air conditioning system
   Lubricant of limiters of doors and cylinders of locks
   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 the saloon filter
   Replacement of brake fluid
   Check and replacement of spark plugs, check of a condition of high-voltage wires (petrol models)
+ Engine
+ Cooling systems, heating
+ Power supply system and release
+ Engine electric equipment
+ Gear shifting box
+ Automatic transmission
+ Coupling
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment


Check of the ATF level, replacement of the AT filter

Check of level

Check of level of liquid in automatic transmission

6 — the Index of level of liquid
6a — the Blocking lever
6b — the Core (the left top illustration for models, to 09.93 g of the issue)

Liquid level is measured in automatic transmission at the heated-up engine and transmission. For warming up of the power unit up to the necessary temperature you can make short (15 kilometers) a trip.


1. Place the car on a horizontal surface, cock the parking brake. For reliable fixing of the car enclose under prop wheels.
2. Start the engine and leave to work at single turns. Press a pedal of a foot brake and accurately move the selector from situation "P" to situation "1", then back in "Р". Make sure of lack of signs of development of external leakages of ATF.
3. The probe of measurement of level of liquid is located in a back part of transmission. Before taking the probe, carefully wipe a case surface around it, - hit of dirt in a box is inadmissible.
4. Open the blocking lever 6a (models to 09.93 g of the issue).
5. Press a core (6b) (models from 10.93 g of the issue) sideways in the direction of an arrow, remove both parts and the blocking lever (6a).
6. Take the index of level of liquid 6. Wipe it with a dry rag.
7. Insert the index against the stop, again take it and check liquid level. On the cold transmission (about 30 °C) the ATF level has to be between the marks "MIN" / "30" and "MAX" / "80". On the heated-up transmission (about 80 °C) level has to be on the mark "MAX" / "80".

If you measure level at the cold power unit, the received result will be lower than real. Surely check level on the heated-up engine as excess of the maximum admissible level of liquid can lead to a box exit out of operation. Addition of liquid is carried out through the directing tube of the measuring probe. Do not allow hit of dirt in AT case. Add only fresh liquid and only through a funnel (it is desirable, equipped with the filter).

8. Add liquid in the small portions, constantly checking level.
9. After you restored liquid level in a box, return the probe into place and kill the engine.
10. If you have to add often liquid in a box, it means that somewhere there is a leak. Immediately eliminate it.

Replacement of ATF and AT filter

Replacement of transmission liquid and filter

1 — the Drain stopper in the pallet
2 — the Drain stopper in the hydrotransformer
3 — the Pallet

5 — the Oil filter
6 — the Bolt of fastening of the filter, a bolt of fastening of the pallet
050 — the Funnel


1. Install the gear shifting selector lever in situation "P" and tighten the lever of the drive of the parking brake.
2. Turn off a drain stopper (1) on the pallet and a drain stopper (2) on the hydrotransformer. Removal of liquid has to be made only on heated-up transmission.
3. Remove the pallet (3) and an oil filter (5).
4. Insert a funnel 050 into an opening of the directing tube of the measuring probe. Fill in 4 l of fresh ATF in transmission.
5. Start the engine and establish idling turns at the gear shifting selector lever in situation "P".
6. Serially switch the AT selector lever to provisions R-N-D-N-R, detaining him in each situation several seconds.
7. Check and adjust liquid level.