Recreational Vehicle Lpg Tank Valve/gauge problems of the 2005 Ford Five Hundred

My 2005 Ford 500 some times the dash quits working radio heat that stuff is fine but the dash it's self rpm speedometor gas gauge all the dash quits and when that happens the airbag light comes on because when the dash quits so does the airbags that is a saftey and should be a recall.

Driving when the call rpm drop and abs goes out car won't excelerate "failsafe engine mode " is what it says n my check engine light and abs light and rench light on, had to pull over and shut off and turn back on. Cleaned the throttle body and reprogramed the computer and it continues to happen at random and will randomly excelerate on its own with rpms rising and yet I'm no where near gas pedal, I'm on brakes. As my instrument panel will malfunction and all gauges will go to zero and wiggle and all warning lights will be displayed them goes completely black, this has also been very unsafe of an issue because at night when this happens you can't see your spend or gas or anything. And the fail-safe mode also has almost cause me to have crashed as well as been crashed into over four dozen times. Seeing how I pay for it to be fixed and nothing can't seem to fix it . . . It's very scary and I worry for my life each time I drive.