Hello Scotty my 2005 Ford Focus has this weird burning smell coming from the cabin vents and it throws the battery light. When I was driving it, it stalled out on me but started right back off the battery light goes of and on then later it will start to throw other lights, the car has been parked for a few couple days in the cold and shocking it starts back up so I think the alternator it’s charging but then the light came on and I turned it off and tried starting it and the car won’t start but all the unlock and lock from the remote still working so I’m not sure if I would need a new battery, the belt seem to be good also I just need suggestions