Hi Patrick,Originally Posted by PatrickPGH
Look at the bottom of the oil pan and you will see a roundish cover on it, that is the sensor. In the M50 it screws out, but all the oil will come with it so probably want to wait until your next oil change. It is a two stage sensor, one part measures the level in the pan and the other is dynamic measuring when the engine is running. Not a super expensive part if it is bad.
Best,
Rory