Ours have worked fine since day one.
We do flush our tanks, and not just drain them. That may contribute to good performance.
Fill three quarters or less full and all the ice cues you have. Put some water softener and dish soap into the mix and drive down a bad section I40 or somewhere.
Bleach will also cut grease and crud too so pour some of that in.
Flush don't just drain and refill and flush all the soap etc out again.
If that don't do it, well I haven't replaced any sensors, or checked wiring.
I do understand, I believe there is not a whole lot to the sensors to go bad.
So maybe the cleaning will do it.
Now I'm gonna sit back and watch someone tell you and me how to fix it right.
