The ABS and Track module has detected a problem with the system. The code(s) can be read to help determine the cause. Your local auto parts store can help you with that at no charge.
Most likely about 2 gallons.
I am currently attempting to go 28 miles with .835 gallons of regular after driving 20 miles with the gas light on. If I don't right again I made it.
However far you can get on about 1 gallon.
No. Just the main tank. The warning light comes on with about a gallon left in the tank, in my experience.
From my experience, roughly 1 gallon.
No.
I have made it 27 miles, I wouldn't go much more than that.
Not that I've seen.
possibly the cap isn't tight enough, turn it until you hear it click 3 times.
The warning light on the dash of a Dodge Charger could mean different things. It would depend on the year of the Dodge Charger for starters. There are also multiple warning lights. It is recommended to check the owners manual or have it checked my a mechanic.
Look in your owners manual.
By buying fog lights and installing them.