2011 MAZDA CX-9 Complaints

SUDDENLY STARTS TO ACCELERATE WHILE AT A STOP LIGHT, STOP SIGN OR I AM LETTING A PERSON OUT AND STILL IN DRIVE AND MY FOOT IS ON THE BREAK. IT HAS DONE IT 4 TIME SINCE I GOT HER BOUGHT 02/03/2020 THE LAST WAS 06/06/2020. I HAVE TO PRESS DOWN ON THE BREAK VERY HARD TO KEEP IT FROM GOING FORWARD LASTS ONLY A SECOND OR TWO. *TR

BRAKES WHEN APPLIED WOULD SOMETIMES GO TO THE FLOOR BEFORE STOPPING. THE BRAKE BOOSTER HAS GONE BAD AND VERY DANGEROUS ALMOST CAUSING AN ACCIDENT. BRAKE PEDAL SOFT AND SOMETIMES WILL NOT STOP.

TL* THE CONTACT OWNS A 2011 MAZDA CX-9. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 10 MPH, BOTH FRONT AND REAR SIDE DRIVER AND PASSENGER SIDE CURTAIN AIRBAGS DEPLOYED INADVERTENTLY. DURING THE INCIDENT NO COLLISION HAD OCCURRED AND VEHICLE WAS NOT DRIVEN OVER A BUMP. THE DRIVER SUSTAINED NECK AND LEFT SHOULDER INJURIES AND SUFFERED HEADACHES SINCE THE INCIDENT. MEDICAL TREATMENT WAS REQUIRED. THE VEHICLE WAS TOWED TO THE LOCAL DEALER BROWN MAZDA OF CHANTILLY (4155 AUTO PARK SERVICE CHANTILLY, VA). THE CAUSE OF THE FAILURE WAS NOT DETERMINED. THE MANUFACTURER WAS ALSO NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 137,000.

BRAKES REALLY HARD TO PRESS. WIFE THOUGHT CAR WASN'T GOING TO STOP AND SHE WAS GOING TO REAR END CAR IN FRONT OF HER. SOMETIMES BRAKE PEDAL WOULD FEEL SPONGY. OVER LAST MONTH THERE WAS AN INTERMITTENT STRANGE NOISE SOMETIMES WHEN CAR WAS STARTED. MAZDA DEALERSHIP IDENTIFIED THE PROBLEM TO BE A DEFECTIVE BRAKE BOOSTER. I FOUND THAT NHTSA OPENED INVESTIGATION ON CX-9 BRAKE ISSUES PREVIOUSLY AND MAZDA IDENTIFIED PROBLEM TO BE BRAKE BOOSTER. MAZDA EXTENDED THE WARRANTY TO 7 YEARS OR 90,000 MILES AND NHTSA CLOSED INVESTIGATION. OUR BRAKE BOOSTER FAILED AT 9 YEARS WITH 79,388 MILES ON THE CAR. FROM WHAT I HAVE READ THE LIFE EXPECTANCY OF A BRAKE BOOSTER IS THE LIFE OF THE CAR. MAZDA NEVER INFORMED US ABOUT THIS POSSIBLE PROBLEM. OUR FAMILY COULD HAVE BEEN SERIOUSLY INJURED OR KILLED DUE TO THIS DEFECT. WHY DID THE NHTSA ACCEPT AN EXTENDED WARRANTY AS A SOLUTION?

TL* THE CONTACT OWNS A 2011 MAZDA CX9. THE CONTACT STATED THAT WHILE HIS WIFE WAS DRIVING APPROXIMATELY 13 MPH AND ATTEMPTING TO SLOW DOWN, THE BRAKE PEDAL WAS HARDER THAN USUAL TO DEPRESS. AS A RESULT, THE DRIVER REAR ENDED THE VEHICLE IN FRONT CAUSING A FIVE VEHICLE COLLISION AT A TRAFFIC LIGHT. NONE OF THE FRONTAL AIR BAGS DEPLOYED. THE POLICE WERE PRESENT AND A POLICE REPORT WAS FILED. THERE WERE NO INJURIES REPORTED. THE VEHICLE WAS TOWED TO AN IMPOUND LOT WHERE THE INSURANCE COMPANY WAS SCHEDULED TO HAVE AN INSPECTOR INSPECT THE VEHICLE. THE VEHICLE WAS NOT TAKEN TO THE DEALER FOR A DIAGNOSTIC. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE CONTACT REFERENCED NHTSA ACTION NUMBER: PE14005 (SERVICE BRAKES, HYDRAULIC). THE VIN WAS NOT AVAILABLE. THE APPROXIMATE FAILURE MILEAGE WAS 86,000.

THE TRANSFER CASE IN OUR 2011 MAZDA CX-9 FAILED AT 130,000 MILES. I UNDERSTAND THAT MAZDA KNOW ABOUT A DEFECT AS TO THE PROXIMITY OF THE TRANSFER CASE TO THE EXHAUST. THE HEATED TRANSFER CASE LUBRICANT BECOME SLUDGE-LIKE AND CAUSES THE CASE TO FAIL ALSO AFFECTING THE TRANSMISSION SPLINES. THE HEATED LUBRICANT ESCAPED AND DRIPS ON THE EXHAUST AND FILLS THE VEHICLE WITH A TOXIC SMELLING GAS AND APPARENTLY CAN LIGHT ON FIRE. THE TRANSFER CASE FAILED WHILE DRIVING MAKING GETTING OUT OF TRAFFIC DIFFICULT. MAZDA ISSUED A BULLETIN IN 2014 EXTENDING THE WARRANTY TO 7 YEARS OR 90,000 MILES BUT DIDN'T INFORM ANY OF THE CUSTOMERS OF THIS PROBLEM. THERE IS NO SERVICE SCHEDULE FOR THE TRANSFER CASE AS RECOMMENDED BY MAZDA. OR ANY WAY I UNDERSTAND TO CHANGE THE LUBRICANT IN THE TRANSFER CASE. WITHOUT INFORMING US OF THE ISSUE OR HAVING RECOMMENDED ANY PREVENTATIVE MAINTENANCE MAZA CAUSED A VERY DANGEROUS SITUATION FOR MY FAMILY. I HAVE CONTACTED MAZDA USA AND THEY HAVE BEEN UNHELPFUL.

BRAKE BOOSTER IS LEAKING. TAKES LONGER TO STOP. CALLED MAZDA AND REPORTED ISSUE.

OUR VEHICLE HAS LOST BRAKING POWER AND IS UNSAFE TO DRIVE ANY DISTANCE NOW. IT IS VERY DIFFICULT TO GET THE VEHICLE TO STOP AND KEEP IT STOPPED ONCE IT HAS STOPPED MOVING WITHOUT PUTTING IT IN PARK. I HAVE BEEN ADVISED THIS IS IN RELATION TO MAZDA SSP 93. MAZDA HAS ADVISED THAT IS IT MY RESPONSIBILITY TO HAVE THIS VEHICLE TOWED TO THE NEAREST DEALERSHIP, PAY FOR REPAIR LABOR, AND PAY FOR A RENTAL CAR WHILE REPAIRS ARE BEING MADE. I AM IN COMPLETE DISBELIEF THAT A KNOWN MANUFACTURER'S DEFECT RELATED TO BRAKING AND GENERAL SAFETY OF EVERYONE ON THE ROAD WAS NOT IMMEDIATELY ISSUED AS A RECALL. WE WERE PROVIDED ZERO NOTICE THAT THERE WAS EVEN POTENTIAL FOR BRAKE FAILURE.

BRAKE PEDAL IS VERY HARD AND VEHICLE IS NOT STOPPING WELL ALMOST CAUSING AN ACCIDENT

THE A/C EVAPORATOR TANK CONDENSATION DRAIN CLOGS. OURS HAS CLOGGED TWICE AND THE FIRST TIME THE WATER IN THE TANK WOULD SLOSH AROUND AND HEAR IT WHEN MAKING A LEFT TURN. EVENTUALLY IT RUINED THE BLOWER MOTOR TO THE A/C, WHICH HAD TO BE REPLACED. NOW 19 MONTHS LATER, WE HEARD THE WATER AGAIN AND TOOK IT IN RIGHT AWAY AND IT WAS CLOGGED AGAIN AND THE BLOWER MOTOR HAS TO BE REPLACED AGAIN. THIS IS A DESIGN DEFECT. THERE SHOULD BE A BETTER DRAIN SYSTEM. CLEARLY THIS IS AN ISSUE WITH THE MAZDA CX-9 MODEL IN SEVERAL YEARS BECAUSE THERE ARE VIDEOS OF HOW TO UNCLOG THE A/C DRAIN.