[M54B30 06/2002]
Hello there,
I have a problem with my oil pressure control lamp;
when I turn the key to position "ignition", the lamp already turns off after 2-3 seconds. (No engine start)
If I start the engine, the lamp will continue to stay off.
I know for a fact that my old oil pressure valve inside the housing was bad, I switched it out yesterday.
So it could not have been enough pressure inside the housing.
Other than that, when I drain the oil for an oil change, it also turns off while the ignition is on.
That means at the moment I have no way of knowing if my oil pressure is enough.
I already changed it out for an original new one, straight from BMW. So it should be the correct one in good quality.
If I understand correctly, the lamp will shut off when the switch closes (Pressure is applied), which means it grounds to the chassis/engine.
In this case, the cable couldn't be broken because it would loose the connection to ground and show the light.
What ways do I have to check it?
At the moment my best guess is, the switch functions the wrong way. I have a 2002, in that year a lot of things were changed to facelift, maybe that could be one of the things. But it wouldn't make sense to change something this important without any documentation to find.