Tone on leveling panel .

[Philmont man]

I have a 2006 Sun Voyager motor home and there is a steady annoying tone on the level control panel when I turn the motor off. Doesn’t matter if the jacks are up or down. Also the lights on the panel light up dimly. I use to turn the key to the on position and back off and it would quit but not now. I can turn the key to the on position and leave it there and it stops. idea?

Dennis Peterson