I have a 2012 Mazda 3 with only 14k miles. When I am driving and hit the breaks, the headlights will dim. Checked the battery and had good amps cold and running. Also checked the fuses and nothing was out of place. Anyone have any thoughts on what this could be?

 

Your alt voltage regulator is not putting out enough voltage. Theres a PCM flash update the dealer can do.