Originally Posted by 328IScreamer
My obc on my e36 is displaying coolant low when it is perfectly fine. I'm assuming it's the sensor. What is involved in replacing this?
It's either the sensor or the wiring to the sensor. You can try bridging the two wires by removing the connector, turn the key on and off. If the light goes out it is the sensor. If it's still on, it could be a broken wire/bad connection.