2005 saab 9-3 no power to coolant sensor

What is your question?

Replaced the coolant level sensor thinking that was the reason the "coolant level low" light keeps coming on. The light still comes on. I used a test light to determine if power is getting to the sensor and it is not. All fuses in all 4 fuse boxes are good. Where is the fuse or power source that controls the power to the coolant level sensor?

What makes this problem better or worse?

Nothing

How long has your 2005 Saab 9-3 had this problem?

Intermittently