S-class W202 Mercedes

1993-2000 of release

Repair and car operation

W202 Mercedes
+ 1.2. General information
+ 2. Maintenance
+ 3. Engines
- 4. Greasing system
   4.2. Specification of engine oil
   4.3. Scope viscosity oils / class
   4.4. Consumption of oil
   4.5. Contour of circulation of oil (DD)
   4.6. Oil reduktsionny valve
   + 4.7. Oil pallet
   4.8. Indicator of level of oil
   4.9. The heat exchanger oil - / 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. Running gear
+ 11. Steering
+ 12. Brake system
+ 13. Body
+ 14. Electric equipment
+ 14.2. Electroschemes

b47c026d b47c026d

4.8. Indicator of level of oil



27. Oil pallet
351. Sensor of level of oil
352. A bimetallic latching disk
358. Float
359. Magnet
360. Reed – contact (yazychkovy contact, геркон)
365. Ring of round section
and – the Ventilating opening in diameter of 8 mm
b–Drain opening in diameter of 4 mm

The indicator of level of oil consists of the sensor of level of oil which is established on a spuskny stopper in the oil pallet, and a control lamp on the dashboard. The indicator supervises oil level in the oil pallet, since oil +60 temperature ° C. As soon as ignition joins, the control lamp burns for 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 masloizmeritelny 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 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 sensor of level of oil is equipped with a bimetallic latching disk (352). It prevents work empty the poplavkovy chamber through a drain opening (b) at low temperatures.

The bimetallic latching disk opens at temperature about +60 ° C and is closed at temperature about +30 ° by C.

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



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


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