Mercedes S-class W202

1993-2000 of release

Repair and car operation

Mercedes W202
+ 1.2. The general data
+ 2. Maintenance service
+ 3. Engines
- 4. Greasing system
   4.2. The engine oil specification
   4.3. A scope of oils / a viscosity class
   4.4. The oil expense
   4.5. A contour of circulation of oil (ДД)
   4.6. Oil редукционный the valve
   + 4.7. The oil pallet
   4.8. The indicator of level of oil
   4.9. The heat exchanger oil-/of a cooling liquid
   4.10. Diagnostics of malfunctions in a contour of circulation of oil
+ 5. Cooling system
+ 6. Heating, ventilation
+ 7. Ignition system
+ 8. Fuel system
+ 9. Transmission
+ 10. A running gear
+ 11. A steering
+ 12. Brake system
+ 13. A body
+ 14. An electric equipment
+ 14.2. Electroschemes

4.8. The indicator of level of oil


27. The oil pallet
351. The gauge of level of oil
352. A bimetallic latching disk
358. A float
359. A magnet
360. Reed – contact (язычковый contact, геркон)
365. A ring of round section
And – the Ventilating aperture in diameter of 8 mm
b – the Drain aperture in diameter of 4 mm

The indicator of level of oil consists of the gauge of level of oil which is established on спускной to a stopper in the oil pallet, and a control lamp on the instrument panel. The indicator supervises oil level in the oil pallet, since temperature of oil +60 C. As soon as ignition joins, the control lamp burns for the functional control and dies away after the beginning of rotation of the engine.

Oil level in the oil pallet is reproduced by means of a float (358). At low level of oil (in the field of the bottom mark маслоизмерительного щупа) by means of a magnet (359) in a float opens геркон. Thanks to it electronics in the communication panel receives a signal, and the lamp lights up.

At the lowered level of oil, depending on a driving manner, at first the control lamp for a short while lights up, and then burns constantly.

That at various road situations, for example, at sharp turns to avoid false alarm signals, in the electronic scheme the delay line is built in. She allows to light up to a control lamp only after the alarm system of low level of oil during 60 seconds

For an exception of false indication at the cold engine (dense oil slowly pours out in the oil pallet) the gauge of level of oil is equipped by a bimetallic latching disk (352). It prevents work empty поплавковой chambers through a drain aperture (b) at low temperatures.

The bimetallic latching disk opens at temperature nearby +60 C and is closed at temperature nearby +30 C.

At oil replacement поплавковая the chamber is filled with oil through a ventilating aperture (). It excludes the subsequent false indication. The indicator of level of oil is established so that the control lamp lighted up shortly before level achievement "min" on маслоизмерительном щупе (a safety reserve). Thanks to it it is possible to fill in oil not at once, and at the nearest opportunity, for example, at refuelling.



1. Remove the bottom cover of a motor compartment.
2. Lower engine oil.
3. Remove штеккер (1) gauges of level of oil.
4. Unscrew bolts (20). Turn the gauge (351) levels of oil and take it from the oil pallet.


1. Establish the gauge of level of oil with a new sealing ring of round section and twirl with the moment 10 Н.м.
2. Put on штеккер.
3. Establish the bottom cover of a motor compartment.
4. Fill in engine oil.
5. Warm up the engine and check up tightness of the gauge of level of oil.