Check the brake pedal position switch. It's a little switch on the brake pedal itself, google it for your year/make/model to see where it is.
I found it, but what would I do,
Is the switch working? Can you press the plunger in/out? If the switch is not at fault, then you'll have to troubleshoot the electrical circuit, may be a short to ground causing lights to stay on.
Looking for a Used 300M in your area?
CarGurus has 3 nationwide 300M listings and the tools to find you a great deal.
Search Chrysler 300M Questions
Chrysler 300M Experts
Related Models For Sale