voltage light came on while driving turned car off and then on light went off
Have battery terminals, battery voltage and alternator output voltage checked. Could be something as simple as a loose or dirty connection. Or maybe battery low voltage / going bad or alternator going bad.
Also check alternator belt tension.
Search Chrysler 300 Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Chrysler 300 Experts