I bought a new Febi coolant level sensor as preventative maintenance and noticed it would randomly trigger a coolant low light although the level was fine. I tested the sensor and it works fine so there was an intermittent contact issue. Before I inspected the car wiring, I installed the old working sensor and noticed that the connector fit snug. When I tried it on the Febi again it was loose. So I measured the diameter of the pins and found that the 2 male bullet style pins on the Febi are almost 1mm smaller in diameter than the original. I think I could remedy the problem by simply bending the pins slightly. Just wanted to put it out there incase someone else was experiencing this issue.