Mercedes of the S-class W202
1993-2000 of release
Repair and operation of the car
+ 1.2. General information
+ 2. Maintenance
+ 3. Engines
- 4. Lubrication system
4.2. Specification of engine oil
4.3. Scope viscosity oils / class
4.4. Oil consumption
4.5. Contour of circulation of oil (DD)
4.6. Oil reducing valve
+ 4.7. Oil pallet
4.8. Oil level indicator
4.9. The heat exchanger oil - / cooling liquid
4.10. Diagnostics of malfunctions in an oil circulation contour
+ 5. Cooling system
+ 6. Heating, ventilation
+ 7. System of ignition
+ 8. Fuel system
+ 9. Transmission
+ 10. Running gear
+ 11. Steering
+ 12. Brake system
+ 13. Body
+ 14. Electric equipment
+ 14.2. Electrical circuitries
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PETROL AND DIESEL ENGINES
The indicator of level of oil consists of the oil level sensor which is installed on a spuskny stopper in the oil pallet, and a control lamp on the dashboard. The indicator controls oil level in the oil pallet, since temperature of oil of +60 °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 the low level of oil (in the field of the lower mark of the masloizmeritelny probe) 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 oil level, 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 line of a delay is built in. She allows to light up to a control lamp only after the alarm system of low level of oil during 60 sec.
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 the bimetallic latching disk (352). It prevents operation empty of the float-operated camera through a drain opening (b) at low temperatures.
The bimetallic latching disk opens at a temperature about +60 °C and is closed at a temperature about +30 °C.
When replacing oil the float-operated camera is filled with oil through an air vent (and). It excludes the subsequent false indication. The indicator of level of oil is installed so that the control lamp lit up shortly before achievement of the min level on the masloizmeritelny probe (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.