When I attempt to use the level monitor on our 2001 it will flash all lights quickly and then show only the lowest light on all tanks and battery. Any idea on where to start trouble shooting?

I had a similar problem with my 2001. It was a loose ground wire going to the control panel. Mine was a white wire that went from the control panel to a screw that was screwed into the metal side rail. I had to take the upper metal fridge vent off to get to it. It was located to the left of the opening. The screw had come out of the metal rail probably due to road vibrations. I installed a larger screw and put a dab of sealer on it to keep it from backing out. Hope this helps.

Bob

__________________
2014 FR Heritage Glen 282RK
2013 F250 HD 6.7L Diesel
Formerly Owned: 1995 22D Fun Chaser & 2901L Classic