2012 mazda CX-9 brakes problems

BRAKE PEDAL MAKES HISSING SOUND WHEN DEPRESSED LIKE AIR LEAKAGE; INTERMITTENTLY VERY DIFFICULT TO DEPRESS BRAKE PEDAL WITH A LOT OF FORCE APPLIED (TYPICALLY IF PUMPING BRAKE), LEADING TO INCREASED STOPPING DISTANCE/DIFFICULT STOPPING. OCCURS WHEN BRAKES DEPRESSED (SOFT PEDAL, AIR HISSING); IF DEPRESSED AGAIN IN QUICK SUCCESSION, VERY HARD TO PRESS WITH SIGNIFICANTLY REDUCED STOPPING POWER. O…

I PUT MY VEHICLE IN THE MAZDA SHOP LAST YEAR 2017 FOR A RECALL AND I MENTIONED THAT THERE WAS SOMETHING I FELT IN MY BRAKES THEY TOLD ME THAT IT MAY BE DUST AND BY DRIVING IT WILL GO AWAY,MAZDA KNEW ABOUT THIS PROBLEM THEY SHOULD HAVE TAKEN CARE OF IT THEN.MY VEHICLE WAS TAKEN TO OURISMAN MAZDA DEALERSHIP ABOUT 2 WEEKS AGO AND I WAS TOLD THAT IT WAS MY BRAKE BOOSTER & MASTER CYLINDER LABOR IS $709…

FOR THE PAST WEEK, MY 2012 MAZDA CX-9 HAS BEEN HAVING ISSUES WITH NOT BRAKING. AT FIRST, I THOUGHT IT WAS JUST MY IMAGINATION, BUT EVERY DAY THIS PAS WEEK, AT LEAST ONCE A DAY, I GO TO PUSH ON THE BRAKE PEDAL AND IT WON'T MOVE. THE BRAKE PEDAL IS STIFF AS IF I'M PUSHING ON A BLOCK OF CEMENT. IT'S VERY SCARY, AND I'VE ALMOST HIT SEVERAL CARS, AND EVEN ALMOST HIT A PEDESTRIAN. I AM A MOM AND DRI…

ON JANUARY 7,2015 I WAS DRIVING ON THE LONG ISLAND EXPRESS WAY MERGING OFF THE RAMP BACK ONTO THE HIGH WAY WHEN I COULDN'T BREAK. MY BREAKS DIDN'T WORK. I KEPT ON PRESSING THEM DOWN AND NOTHING WAS WORKING. TRUCKS WERE ALL HONKING AT ME BECAUSE I WAS MERGING WITHOUT STOPPING. FINALLY I WENT OFF THE RAMP ONTO THE GRASS. I CALLED THE DEALERSHIP AND WAS INFORMED THAT THERE IS A RECALL REGARDING THIS …

I HAD TO PUSH HARDER AND HARDER ON MY MAZDA CX9 BRAKE PEDAL FOR MY CAR TO SLOWDOWN AND TO COME TO A COMPLETE STOP . THIS HAPPENED WHEN BACKING OUT OF MY GARAGE AND THE BRAKE IS GETTING WORSE EVERYDAY ON MY WAY TO WORK . ON THE DAY WHEN I HAD TO TAKE MY CAR TO THE MECHANICS , I HAD PRACTICALLY PUT BOTH FEET ON THE BRAKE PEDAL FOR THE CAR TO STOP . IT WAS A TERRIFYING EXPERIENCE THAT THE CAR WOULD…

DROVE ~600 MILES WITH A FAILED BRAKE BOOSTER. FOUND OUT VIA INTERNET THAT MAZDA HAD PROVIDED AN EXTENDED WARRANTY TO COVER THIS DEFECT. WHEN THE DEALERSHIP WHERE I TOOK THE CAR TRIED TO FIND THE PART IT WAS ON BACKORDER WITH MAZDA. THE MAZDA SERVICE MANAGER AT PRESTON MAZDA, JOHN ROSENSTEEL, HAD ONE OF HIS PEOPLE DRIVE TO BUTLER, PA FROM BOARDMAN, OH TO PICK UP THE PART. I TOOK THE CAR TO THE DEAL…

BRAKES DO NOT STOP VEHICLE IMMEDIATELY, IT IS HARD TO APPLY BRAKES.

TL* THE CONTACT OWNS A 2012 MAZDA CX-9. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 20 MPH, THE BRAKES FAILED TO OPERATE. THE CONTACT MENTIONED THAT THE BRAKES GRADUALLY SLOWED DOWN THE VEHICLE AND STOP INDEPENDENTLY. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE THEY INFORMED THE CONTACT THAT THERE WAS AN UNKNOWN RECALL ON THE VEHICLE. THE CONTACT CONTACTED RILEY MAZDA (75 MYR…

BRAKES WERE OCCASIONALLY 'TIGHT', HAD TO BE PUSHED VERY HARD TO GET THE VEHICLE TO STOP. WHEN I PUSHED THE BRAKES IT SOUNDED LIKE AIR WAS BEING PUSHED OUT. CHANGED PADS AND BRAKE FLUID, FLUSHED THE AIR OUT. ONLY MADE IT WORSE. NOW THE BRAKES ARE CONSTANTLY 'TIGHT' AND AFTER LEARNING THIS IS A COMMON ISSUE WITH THIS VEHICLE I'M GOING TO REPLACE THE BRAKE BOOSTER. RIDICULOUS THAT SO MANY ARE HAVING …

WHILE BRAKING NORMALLY FOR A STOP SIGN, THE BRAKES BECAME HARD TO PRESS AND DID NOT STOP THE CAR AS NORMAL. HISSING FROM THE PEDAL AREA WAS HEARD AND THE CAR FINALLY STOPPED HALFWAY THROUGH AN INTERSECTION AFTER NEARLY STANDING ON THE BRAKES.