Oil Level Sensor: Description and Operation

Oil Level Sensor:
As in the E38 M60 and in the M73 engines, a thermal oil level sensor is fitted in the M62.

This oil level sensor sends a pulse width modulated signal to the check-control module (E31: CCM; E38/E39: LCM).

The pulse duty factor of this signal is a measure for the oil level in the engine. If the level drops below a threshold value stored in the CCM/LCM control unit, the check control message "Check engine oil level" is displayed for the driver.