2012 MAZDA CX-9 Complaints

I WAS DRIVING HOME FROM WORK TODAY. WHEN I APPROACHED A TRAFFIC LIGHT, I DEPRESSED THE BRAKE PEDAL AND HAD TO PRESS IT VERY HARD FOR THE CAR TO STOP. GOOD THING THERE WAS NOBODY IN FRONT OF ME BECAUSE I WOULD HAVE HIT THEM. AS I STARTED TO GO AGAIN AND PROCEED TO ANOTHER LIGHT, AS I PUSHED THE BRAKE PEDAL, I HEARD A 'HISSING' SOUND COMING FROM THE PEDAL. IT ALMOST SOUNDED LIKE AIR COMING OUT OF A TIRE. THIS WAS ALARMING TO ME BECAUSE I FELT AS IF MY BRAKES WERE GIVING OUT. I HAD TO PRESS VERY HARD ON THE BRAKE AND AS IT BRAKED, IT WAS SO SUDDEN IT SHOVED ME FORWARD IN THE SEAT. I TOOK IT RIGHT OVER TO OUR SERVICE SHOP IN TOWN, AND AFTER HE TOOK THE CAR FOR A TEST DRIVE, HE DROVE IT RIGHT BACK AND PROCEEDED TO TELL ME THAT IT SOUNDS LIKE THE BRAKE BOOSTER WAS GOING. HE ADVISED ME NOT TO DRIVE THE CAR AND TO CALL AAA AND HAVE IT TOWED TO THE DEALER. I MANAGED TO GET IT BACK HOME, VERY SLOWLY, AND INTO THE GARAGE. THIS IS VERY FRIGHTENING TO ME BECAUSE MY DAUGHTER ALSO DRIVES THIS CAR ON OCCASION AND WHAT IF THE BRAKES FAILED WHILE SHE WAS DRIVING?! IN READING ALL THE POSTS WITH CUSTOMERS HAVING THIS SAME ISSUE WITH THE BRAKES, I THINK MAZDA NEEDS TO RECALL THIS PART BEFORE THEY HAVE A BIGGER LAWSUIT ON THEIR HANDS! I WILL BE CALLING THE DEALERSHIP FIRST THING TOMORROW MORNING.

UPON STARTING CAR AND PUTTING CAR INTO DRIVE, BRAKES WOULD NOT STOP THE CAR INITIALLY AND HAD TO PUMP THE BRAKES SEVERAL TIMES TO EVENTUALLY KEEP THE CAR FROM ROLLING. WHEN THE BRAKES ARE PRESSED TO THE FLOOR, THERE IS A HIGH PITCHED SQUEALING SOUND AS IF THERE IS A VACUUM LEAK OR SOMETHING. I SUSPECT THAT BASED ON THE OTHER COMPLAINTS AND ARTICLES I HAVE READ THAT THE BRAKE BOOSTER HAS A COMPROMISED SEAL. THIS NEEDS TO BE A RECALL ITEM AND VERY SOON AS MANY PEOPLES' LIVES ARE BEING PUT IN DANGER BECAUSE OF THIS COMMON DEFECT IN THE CX9 FAMILY OF BRAKING SYSTEMS.

JUST AFTER SHIFTING INTO DRIVE FROM PARK, NOTICED HIGH PITCHED SQUEAL AND HISSING. BRAKES HAD TO BE PRESSED ALL THE WAY TO FLOOR IN ORDER TO STOP THE VEHICLE AT ONLY 5-10 MPH. THEN WHILE DRIVING SOMETIMES BRAKES SEEMED TO WORK FINE AND OTHER TIMES NEEDED TO DEPRESS BRAKE PEDAL ALL THE WAY TO FLOOR. SEEMS TO BE AN ISSUE THAT SHOULD BE RECALLED GIVEN SO MANY PEOPLE HAVING SUCH AN ISSUE AT LOW MILEAGE.

TL* THE CONTACT OWNS A 2012 MAZDA CX-9. AFTER ATTEMPTING TO ENGAGE THE BRAKES, THE BRAKE PEDAL FAILED TO DEPRESS. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER FOR FURTHER INSPECTION. THE VIN WAS NOT AVAILABLE. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 41,000.

I REVERSED MY VEHICLE INTO A PARKING SPOT AND STARTED HEARING ABNORMAL NOISE LIKE BRAKES GRINDING, BUT WAS STILL PRESENT EVEN WHEN NOT MOVING. HAVING A CAR BACKROUND I KNEW IT WAS MORE LIKE AIR. WASN'T SURE WHAT IT WAS, BUT BECAUSE I ALREADY WORK AT A DEALERSHIP I DECIDED TO HAVE ONE OF MY DIAGNOSTIC TECHS CHECK IT OUT. HE KNEW RIGHT FROM MY DESCRIPTION THAT IT WAS PROBABLY BRAKE BOOSTER RELATED. CALLED MY DEALERSHIP THAT ALWAYS SERVICES MY CAR FOR AN EMERGENCY DROP OFF. BRINGING THE VEHICLE TO THE DEALERSHIP, EVERY TIME I BRAKED THE PEDAL WOULD NOT GO DOWN ALL THE WAY, GO STRAIGHT TO THE FLOOR, OR I'D HAVE TO DOUBLE TAP THE BRAKES SIMILIAR TO IF I WAS DRIVING ON ICE. WHEN AT STOPS I'D HEAR THE AIR NOISE FROM THE BOOSTER, AND EVEN WHEN THE VEHICLE WAS OFF THE PEDAL GOES TO THE FLOOR. SOMETIMES I'D BE COMING TO A STOP AND THE BRAKES WOULD GRAB SUDDENLY AND I'D SLIDE FORWARD ON THE SEAT & MOST LIKELY INTO THE STEERING WHEEL IF I DIDN'T HAVE MY SEATBELT ON. THE PROBLEMS WITH THE BRAKE HAPPENED AT SUDDEN STOPS, SLOW STOPS, AND THE NOISE OF AIR WAS PRESENT AT ALL BRAKING. CHECK ONLINE FOR TSB BRAKES FOR MY VEHICLE AND SEE IT IS BECOMING A COMMON THING. VEHICLE IS AT THE DEALERSHIP CURRENTLY & IS OUT OF WARRANTY, BUT WITH THIS BEING SUCH A WELL NOTED CONCERN & OTHER ISSUES I'VE HAD I DON'T KNOW WHAT I WILL DO.

I EXPERIENCED UNEXPLAINED SUDDEN ACCELERATION WHILE STOPPED AT A STOP LIGHT. AT THE TIME OF THE INCIDENT THERE WAS ONE CAR STOPPED IN FRONT OF ME AND ONE BEHIND ME. FROM THE ONSET OF THE INCIDENT IT TOOK JUST A VERY FEW SECONDS, PROBABLY BETWEEN TWO AND FOUR, FOR THE ENGINE TO REV TO AN EXTREMELY HIGH SPEED. WHILE THIS WAS HAPPENINGS I COULD FEEL THE VEHICLE ATTEMPTING TO MOVE FORWARD FORCEFULLY WHILE I WAS APPLYING THE BRAKES VERY HARD. I SHIFTED INTO NEUTRAL AND TURNED OFF THE IGNITION. I THEN SHIFTED INTO PARK. I TURNED THE IGNITION ON AGAIN AND THE ENGINE CONTINUED TO REV AT A VERY HIGH SPEED. I IMMEDIATELY SHUT OFF THE ENGINE. I DECIDED TO START THE VEHICLE ONE MORE TIME. THIS TIME WHEN I TURNED ON THE IGNITION THE VEHICLE RAN NORMALLY. I CAUTIOUSLY DROVE IT FOR POSSIBLY FIVE MILES AND PARKED IT WHERE I COULD HAVE IT TOWED TO THE DEALERSHIP. I WAS ASKED ABOUT FLOOR MATS.THE ORIGINAL FLOOR MATS WERE IN THE VERY BACK OF THE VEHICLE AND I HAD WEATHERTECH MATS, IN THE FRONT OF THE CAR, WHICH WERE ATTACHED TO HOOKS IN THE FLOOR HOLDING THEN IN PLACE. THE DEALERSHIP DID TAKE THE SITUATION VERY SERIOUSLY. THEY DID INDICATED CONCERN ABOUT HAVING THE VEHICLE ON THE ROAD AGAIN. THEY TESTED THE VEHICLE FOR ANY COMPUTER CODES WHICH MIGHT INDICATE WHAT MAY HAVE CAUSED THE PROBLEM AND FOUND NOTHING. THEY CONTACTED MAZDA AND AT THE TIME THAT I SOLD THE CAR BACK TO THE DEALERSHIP THEY HAD NOT HEARD ANYTHING FROM MAZDA.

BRAKE PEDAL BECAME DIFFICULT TO DEPRESS AND VEHICLE ALSO DIFFICULT TO STOP. DIDN'T TAKE BUT A QUICK SEARCH TO FIND MANY OTHER OWNERS OF THESE VEHICLES EXPERIENCING THE SAME THING BASED ON THEIR DESCRIPTIONS. IT'S SO COMMON IT SHOULD ALREADY BE A RECALL. MAZDA SHOULD LEARN FROM OTHER MANUFACTURERS MISTAKES AND BE PROACTIVE AND NOT REACTIVE. WE ALREADY REGRETTED PURCHASING THE VEHICLE AND THIS SOLIDIFIES ARE DECISION TO TRADE IT IN AND NEVER PURCHASE A MAZDA AGAIN. *TR

PULLED OUT OF MY DRIVEWAY THIS MORNING AND TRIED TO USE MY BRAKES -- HEARD A HISSING, SQUEAKING SOUND AND THE CAR DIDN'T STOP. I PUMPED THE BRAKES SEVERAL TIMES WAS ABLE TO SLOW THE VEHICLE DOWN. BRAKES FELT EXTREMELY SLUGGISH FOR THE REST OF MY MORNING DRIVE (DROPPING OFF MY DAUGHTER AT HER SCHOOL). AT A STOPLIGHT THE CAR STALLED, WHICH HAS NEVER HAPPENED BEFORE. TOOK IT TO MY MECHANIC WHO SAID THE COMPUTER WAS KICKING OUT MULTIPLE CODES WHICH SEEMED TO BE RELATED TO THE BRAKE BOOSTER SYSTEM. HE RECOMMEND I TAKE THE VEHICLE TO A LOCAL MAZDA DEALERSHIP B/C IT MIGHT STILL BE UNDER WARRANTY. THE MAZDA DEALER JUST CONFIRMED THAT THE PROBLEM IS RELATED TO THE SUPPOSEDLY KNOWN FAULTY BRAKE BOOSTER SYSTEM AND A LEAK IN THE VACUUM. MAZDA WILL REPLACE THE PARTS FOR FREE AND NOT CHARGE ANY LABOR, EITHER. VERY SCARY ISSUE -- I NEARLY HIT SEVERAL VEHICLES ON MY DRIVE THIS MORNING AND WAS LUCKY THAT THE CARS IN FRONT OF MY MOVED TO AVOID AN ACCIDENT. MAZDA NEEDS TO RECALL ALL CARS WITH THIS ISSUE BEFORE SOMEONE IS INJURED, OR WORSE. *TR

AT VARYING SPEEDS, THE BRAKES ARE VERY DIFFICULT TO APPLY. WHEN APPLIED FULLY, A LOUD SQUEALING CAN BE HEARD FROM THE DASHBOARD AREA. THE VEHICLE IS CURRENTLY AT A SERVICE CENTER FOR EVALUATION. *TR

VACUUM LEAK ON BRAKE BOOSTER. CAN HEAR THE LEAK WHEN DEPRESSING PEDAL. BECOMES VERY HARD WHEN DEPRESSED FULLY AND IS HARD TO STOP, THIS IS A WELL DOCUMENTED PROBLEM. *TR