2012 Mazda Mazda5 Brakes Problems

The contact owns a 2012 Mazda MZ5. The contact stated that while driving at an undisclosed speed, the brake pedal was depressed and went to the floorboard. The vehicle was taken to the dealer; however, the vehicle was not diagnosed nor repaired and remained at the dealer. The manufacturer was made aware of the failure and informed the contact that there was no recall associated with the VIN. The failure mileage was approximately 118,000.

During July of 2021 brake pedal went all the way down with no braking. Pumping the pedal restored braking. After the 3rd incident, had the master cylinder replaced on July 30, 2021 by certified mechanics. Brakes seemed fine, but on Aug 11, 2021 brake pedal went all the way down producing no braking on 3 occasions. Pumping the pedal restored braking. Took vehicle back to garage. Mechanics have not gotten it to fail. Possible new parts are bad? Could anti lock brake system cause this? Its been a really good car for 155,000 miles, but now I'm afraid to drive it.

TL* THE CONTACT OWNS A 2012 MAZDA 5. WHILE DRIVING APPROXIMATELY 5 MPH, THE BRAKE PEDAL TRAVELED TO THE FLOORBOARD WHEN IT WAS DEPRESSED. THERE WERE NO WARNING INDICATORS ILLUMINATED. A LOCAL DEALER WAS NOT CONTACTED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE ANTI LOCK BRAKE SYSTEM NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF FAILURE. THE VIN WAS UNKNOWN. THE APPROXIMATE FAILURE MILEAGE WAS 90,000.

2012 MAZDA5. BROUGHT THE CAR TO THE DEALER, TOLD THEM ABOUT THE VIBRATION AND THUMPING NOISE COMING FROM THE BRAKES / TIRES. THEY SAID THE TIRES BALANCES FINE AND COULD NOT FIND ANY ISSUES. DRIVING DOWN THE HIGHWAY, AT 70 MPH. HAD TO HIT THE BRAKES HARD, HAD A TERRIBLE VIBRATION FROM THE HITTING THE BRAKES/TIRES. I HAD THE TIRES LOOK INTO AT 18,000 MILES, THEY SAID NO PROBLEM, THEN AT 22,000, CANT FIND ANY ISSUES, THEY SAID THAT THESE TIRES WEAR FAST AND THAT'S THE WAY THE LOW PROFILE TIRES ARE, NOW I WILL TAKE IT IN AT 25,000 MILES AND SEE WHAT THEY SAY,TREAD WEAR IS TERRIBLE, AT 18,000 MILES IT WAS DOWN TO 5/32 TREAD. I KNOW THAT THERE IS SOME TYPE OF BELT SEPARATION IN THE TIRES, TRACTION IS ALSO TERRIBLE IN THE SNOW AND RAIN, TIRES ARE TOYO PROXES A18. *TR

STARTING A FEW MONTHS AGO, MY STEERING WHEEL SHIMMIED AS I WAS BRAKING. IT WAS INTERMITTENT. IN MAY, THE SHAKING DISAPPEARED BUT A SLIGHT GRINDING SENSATION(NO NOISE) COULD BE FELT WHEN I APPLIED THE BRAKE PEDAL. I DIDN'T THINK IS WAS A BRAKE WEAR PROBLEM SINCE THE CAR WAS RELATIVELY NEW AND I LIVE IN A FLAT AREA WITH NO UNUSUAL STRESS ON THE BRAKES. I WAS ON VACATION FOR A FEW MONTHS AND DID NOT DRIVE THE CAR. MY HUSBAND DROVE IT ONCE AND FELT IT WASN'T SAFE TO DRIVE BECAUSE OF WEAK BRAKING. I TOOK IT TO THE DEALER WHEN I RETURNED. MY BRAKING DISTANCE WAS DOUBLE OF WHAT IT USED TO BE. I FELT UNSAFE DRIVING THE CAR THE 5 MILES TO THE DEALERSHIP. THE DEALER SEEMED TO KNOW THAT MAZDA WOULD PROBABLY FIX THE ISSUE EVEN THOUGH BRAKE ISSUES ARE USUALLY CONSIDERED NORMAL WEAR AND TEAR. I WAS TOLD THAT MAZDA DID FIX THE PROBLEM AT NO CHARGE AND THAT THERE HAD BEEN A DESIGN FLAW WITH THE 2012 MAZDA5'S ROTORS. I WAS TOLD THEY WERE TOO THIN IN THE ORIGINAL DESIGN AND THUS WORE OUT QUICKLY. THEY ALSO INDICATED THEY HAD FIXED IT IN MORE RECENT MODELS. I FEEL THAT THIS SHOULD HAVE BEEN A FORMAL RECALL. THE CAR RAPIDLY WENT FROM A INTERMITTENT BOTHER TO A TRUE SAFETY ISSUE. I CONTINUALLY WORRIED THAT I MIGHT HAVE TO STOP QUICKLY AND WOULD NOT BE ABLE TO. *TR