Oil Level Sensor: Questions & Troubleshooting

Hello fellow mechanics!

I read in this forum that for vehicles without a Waste Oil Injection (WOI) system, the oil level sensor is deactivated.
During my last oil change, I tested something: I turned on the ignition with an empty oil pan, and there was no oil level warning.

Now I wonder what the point is of enabling or disabling a sensor that undoubtedly exists and is very useful, depending on fixed or flexible maintenance intervals.

Is there a way to use the sensor even with a fixed interval?

Please explain it to me!

Sure, here's the translation:

"Thank you very much in advance!"