One problem related to brake light on has been reported for the 2014 Mazda CX-5. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2014 Mazda CX-5 based on all problems reported for the 2014 CX-5.
Abt 35k miles I began hearing intermittent sequels coming from rear of vehicle while driving. When I first mentioned this to Mazda service adviser, he said he did a complete diagnostic and car was fine. At abt 40-45k the intermittent squeals included grinding like a tin can noise, but there were no indicators that it was a break issue; noise was noticed more during driving not when I stopped and no service brake lights were on. If I accelerated or maneuvered my steering wheel I was able to get noise to stop. When I took my car in to Mazda for oil change I asked to also have brakes checked and adviser said he would do a complete diagnostic. He said brakes were in yellow and I could try to change my brake fluid? the noise, duration and occurrences increased to weekly and then daily. It was still intermittent and while driving forward and in reverse, not as much when braking, and it had become increasingly louder. I called Mazda corporate and they finally agreed to do a diagnostic at a nearby Mazda store when I mentioned I found tbs 04-005/15 on the brake issue and was taking the vehicle to another dealership for a brake check. The diagnostic technician report stated to replace rear brake pads to correct problem. It said the rear brakes had 4mm on outer pads and 1mm on inner pads, and front pads were at 8mm; it did not state if front brakes were also worn unevenly. It also said rear rotors were at 10mm and min was 8mm. I told corporate that it was unusual that rear brakes would wear unevenly and prior to front brakes, that there was no brake service light showing, that the noise was intermittent not constant and while driving more than braking. I also mentioned that I believed there was a defect in the braking system.