2010 Dodge avenger multiple warning lights and gauges acting up.

I am having the exact same problem. Took it to the mechanic and a bad battery, alternator and a BCM later, all the warning lights are still flashing. As soon as I get it fixed I'll let you know how

Any updates on this?

Turns out it was some fuses and wires behind my dashboard that were crossing. Not a car or electrical person so i cant tell u exactly what. But that was basically it.

Yes there are 3 ground wires inside the engine compartment in front of the driver... above the front drivers side tire. Really easy to access them. The 2 little ones are what you need. Unscrew them and clean the connectors with 200 grit sand paper as well as the screw and metal surface. This will resolve the issue. Even if they are tight and look clean. Do it anyways. I've done it 3 times since posting this question it is the solution.

Clean ground wire connectors. The are inside the engine compartment above front drivers wheel. Just unscrew them and clean with sand paper. And re-tighten them. It will solve the problem. Guaranteed.