general problems of the 2013 Mazda MAZDA3

There seems to be a lot of people who own 2012 and 2013 Mazda 3 sedans (with skyactiv-g 2. 0l and halogen type headlights) that are dealing with the same issue I am dealing with myself. I have just purchased a used 2013 Mazda 3 with skyactive technology and I noticed that when I was braking the headlights would pulse on and off and would continue while I braked. I have been told there is a TSB on this issue (attached) and Mazda is well aware of this happening. This concern is caused by inadequate alternator output controlled by the pcm when the battery is under a heavy load. They are to the point now of charging people for a doing the TSB on the car that is causing the problem of the alternator not producing the proper wattage to support both the headlights and the brake lights at the same time. There are numerous online forum entries that speak of this issue with 2012 and 2013 Mazda 3's. I am very concerned that my headlights may stop working which could result in my death or the death of my occupants of my vehicle not to mention the other motorists on the road around me if my head lights were to eventually fail at night due to lack of proper wattage to the headlights. There are videos on you tube that show these pulsing headlights on Mazda's. I believe that headlights are important enough safety issue that their failing could result in death if the headlights completely failed due to the known fault in these vehicles over time.

When driving at highway speeds and applying brakes, the headlights will pulse bright to dim for the duration of braking. I have seen this problem reported online by several dealers and it has a known software update to fix the problem, but it is not listed under the recalls for this vehicle. A similar problem exists on the 2014 Mazda's and a recall does exist for that vehicle.

When I hit the brakes, the light flash almost as if it flashing my bright light, no matter where or how fast or slow I'm driving.

Every time I slow down (braking or just decelerating) the lights flicker. This happens with high or low beams. This has been happening for quite some time. I thought it might be the battery, but after replacement this continued.

While braking the front lights are pulsing from regular to dim and back and forth. They return to normal after releasing the brake pedal. This was first noticed while exiting from highway speeds to a down ramp. There is a service bulletin from Mazda on this, #13-21. It has already been done to my vehicle to no avail. The problem is electrical in nature in my opinion.