S 600 Sedan (140.057) V12-6.0L (120.982) (1996)
/v12-6.0l_(120.982)/Page-663001.png)
Oil Level Sensor: Description and Operation
The engine oil levels in the oil level sensor (S43) and in the oil sump are balanced through the bore (c).
The bore (c) is opened or closed by a bimetal snap plate (8). The bimetal snap plate (8) opens from an engine oil temperature of 60 - 70 °C and closes
at an engine oil temperature of 30 - 40 °C.
When the engine oil is changed. the oil level sensor (S43) is therefore filled through the vent bore (d).
The oil level is measured with a float (6) with ring magnet (7) and a contact (arrow). The contact (arrow) is closed by the magnetic field of the ring
magnet (7) depending on the position of the float (6). The contact (arrow) is open when engine oil level is less than "min" and closed when engine oil
level is greater than "min" When contact (7) is closed, vehicle ground exists at the base plate in the instrument cluster and the indicator lamp (e.g.
model 202: A1e12) does not come on.
