What 170 owners told NHTSA about the 2011 Mazda Cx-90 Phev

CURRENT MILEAGE: 125707. NOTED BRAKE FADE, INSUFFICIENT BRAKING RESPONSE DURING NORMAL CITY DRIVING. THE VEHICLE WAS TOWED TO A LOCATION TO HAVE THE BRAKES EXAMINED. NEW FRONT ROTORS, CALIPERS AND BRAKE PADS WERE INSTALLED. BRAKE SYSTEM BLED AND VEHICLE TEST DRIVEN. NORMAL BRAKING DURING SPEED TESTS OF CITY DRIVING AND EMERGENCY BRAKING. VEHICLE THEN DRIVEN FOR 2-3 DAYS OF NORMAL OPERATION. OPERATOR DRIVING THE VEHICLE AND WHEN BRAKING TO A STOP ON APPROACH TO AN INTERSECTION NOTED THE BRAKE PEDAL WENT TO THE FLOOR BEFORE VEHICLE WOULD SLOW. THE PEDAL HAD TO BE PUMPED TO OBTAIN A MEASURE OF BRAKE RESPONSE. THE VEHICLE TOOK LONGER TO SLOW TO A STOP. ALSO NOTED DURING BRAKING WAS A "HISSING" NOISE WHEN DEPRESSING THE PEDAL. PEDAL WAS THEN PUMPED UP ON APPROACH TO ANY ANTICIPATED STOPPING POINT. VEHICLE TAKEN TO BE CHECKED FOR POSSIBLE AIR IN THE BRAKE LINES. BRAKE SYSTEM CHECKED FOR AIR IN THE BRAKE LINES AND NONE FOUND. TAKEN TO A THIRD-PARTY SHOP FOR ANALYSIS. IT WAS DETERMINED THAT THE MAZDA OEM POWER BRAKE BOOSTER HAD FAILED AND PER THE MECHANIC (NOTE ATTACHED PDF) THE DIAPHRAGM HAD BECOME "BRITTLE" AND THE BRAKE POWER BOOSTER FAILURE CAUSED THE "HISSING" NOISES AND THE BRAKES TO BE CAUSING THE BRAKES TO BECOME UNRESPONSIVE. THE OEM BRAKE BOOSTER HAD TO BE REPLACED. DURING A REVIEW OF ONLINE INFORMATION IT WAS DISCOVERED THAT THE NHTSA HAD CONDUCTED AN INVESTIGATION INTO THE ISSUE OF MASTER BRAKE CYLINDER LEAKAGE REGARDING THIS GENERATION OF MAZDA BRAKE BOOSTERS. THE VEHICLE HAS BEEN IN TO A MAZDA DEALERSHIP FOR PRIOR RECALL REPLACEMENT OF OTHER DEFECTS, HOWEVER THIS POTENTIAL DEFECT WAS NOT ADDRESSED.

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THE BRAKE START LOSING POWER AND NEED TO PUSH REALLY HARD TO STOP.. AND ALSO MAKE LOSING AIR SOUND WHEN PUSH ON BRAKE

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MY BRAKES DID NOT RESPOND AS THEY NORMALLY WOULD UPON APPLICATION OF THE BRAKE PEDAL WHEN APPROACHING AN INTERSECTION ON THURSDAY MORNING. IT FELT ALMOST LIKE THERE WAS A PILLOW UNDER THE BRAKE PEDAL. THIS OCCURRED ONCE ON THURSDAY MORNING, AND ONCE ON FRIDAY AFTERNOON. FRIDAY EVENING BRAKE FLUID WAS FILLED TO ENSURE THAT THERE WAS NOT A LACK OF FLUID CAUSING THE PROBLEM, HOWEVER THE PROBLEM AGAIN OCCURRED SEVERAL TIMES ON FRIDAY EVENING AFTER ADDING BRAKE FLUID. BY SATURDAY MORNING IT WAS WORSENING BOTH IN FREQUENCY (OCCURRING WITH EVERY APPLICATION OF THE BRAKE) AND SEVERITY (FELT AS THOUGH NO MATTER HOW LONG AND HARD I APPLIED PRESSURE TO THE BRAKES IT WOULD NOT PERFORM IN A MANNER THAT WOULD BE EFFECTIVE IN ANYTHING OTHER THAN VERY SLOW SPEEDS WITH EXCESSIVE SPACE BETWEEN ALL VEHICLES). ON SATURDAY IT ALSO BEGAN MAKING A HISSING NOISE WHICH OCCURRED AS I WAS DEPRESSING THE BRAKE PEDAL, THEN STOPPED WHEN THE BRAKE PEDAL WAS FINALLY FULLY DEPRESSED (WHICH TOOK AN EXTRAORDINARILY LONG TIME). I FELT IT WAS NO LONGER SAFE TO DRIVE OTHER THAN TO GET IT TO OUR MECHANIC WHICH I DID ON MONDAY MORNING. OUR MECHANIC TESTED IT AND DETERMINED THAT THE BRAKE VACUUM BOOSTER HAD FAILED AND HAD TO BE REPLACED.

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NOTICE WHILE ON LINE FOR GAS, MAINTAINING FOOT ON BRAKE PEDAL CAR BEGAN TO MOVE FORWARD AND HAD TO APPLY MORE FOOT PRESSURE. CAR HAS 690000 MILES AND OVER 7 YEARS OLD. IN PARK WHILE DEPRESSING THE BRAKE PEDAL CAN HEAR A HISSING SOUND. SYMPTOMS GETTING WORST, BRAKING DISTANCES ARE LONGER AND TAKES MORE PEDAL PRESSURE.

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TL* THE CONTACT OWNS A 2011 MAZDA CX-9. WHILE DRIVING AT AN UNKNOWN SPEED, THE BRAKES FAILED TO RESPOND WHEN THE BRAKE PEDAL WAS DEPRESSED. THERE WERE NO WARNING INDICATORS ILLUMINATED DURING THE FAILURE. THE DEALER WAS NOT CONTACTED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE BRAKE BOOSTER FAILED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VIN WAS UNKNOWN. THE FAILURE MILEAGE WAS 120,000.

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CAR SURGES UNEXPECTEDLY EVEN WHEN GAS PEDAL NOT ENGAGED - CAN CAUSE A RUSHED FORWARD OR REVERSE MOTION, PUTTING PEDESTRIANS OR OTHER CARS AT RISK. THIS HAPPENS DAILY. PROBLEM WAS IDENTIFIED BY DEALERSHIP SEVERAL MONTHS AGO. THERE IS A RELATED OIL LEAK.

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MAZDA CX-9 2011 HAS UN-DETECTED WATER PUMP LEAKS WHICH CAUSE TO ENGINE OVERHEAT AND EVENTUAL ENGINE DEATH. MAZDA CORPORATE IS UNWILLING TO CO-OPERATE. CAR SUDDENLY CAME TO A HALT SHOWING ENGINE LIGHT ON.

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64300 MILES ON ODOMETER AND AM EXPERIENCING TRANSMISSION SHUDDER AT 35 - 45 MPH IN 5TH GEAR. TORQUE CONVERTER PROBLEM? PRETTY LOW MILES FOR TRANSMISSION ISSUES. SMH

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ANY TIME THERE IS EVEN A SLIGHT INCLINE IN THE ROAD AND ANYTHING THAT COULD LESSEN TRACTION SUCH AS A LITTLE GRAVEL, MY TIRES SPIN AND THE CAR DOES NOT MOVE. IT'S ESPECIALLY BAD IN ANY TYPE OF INCLEMENT WEATHER, RAIN, SNOW, SLEET. I LOOSE ALL TRACTION. THE BACK TIRES DO NOT MOVE AT ALL AND THE FRONT TIRES SPIN. THE TIRES HAVE GOOD TREADS.

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TAKATA RECALL I HAD TO PUT IN MY VIN TO MAKE AN APPOINTMENT FOR RECALLS & WAS SENT A MESSAGE BACK STATING THERE ARE NO RECALLS ON MY CAR. WHEN I LOOKED IT UP ON YOUR WEBSITE IT SAYS MY CAR IS IN RECALL FOR AIRBAGS AND LOWER CONTROL ARM. BUT ACCORDING TO THE MAZDA DEALER & THE MAZDA WEBSITE I DON'T HAVE ANY RECALLS ON MY CAR!!! SO TO DATE I HAVEN'T BEEN ABLE TO FIX THE ITEMS THAT ARE BEING RECALLED. WHEN THE RECALL FOR THE AIRBAGS CAME OUT I CONTACTED MAZDA & THERE WAS NO RECALL. AGAIN WHEN THE RECALL WAS EXPANDED I CONTACTED MAZDA. MY VEHICLE WAS NOT ON THE LIST. I WENT TO YOUR SITE TO SEE WHAT YOU HAD ABOUT MY CAR & DISCOVERED YOU HAVE 2 OPEN RECALLS ON MY CAR THAT AS FAR AS FAR AS MAZDA IS CONCERNED I HAVE NONE. YET YOU HAVE ON YOUR WEBSITE THAT I DO SO I AM TRYING TO GET TO THE BOTTOM OF THIS. DOES MY CAR HAVE ANY RECALLS OR NOT? I ALSO WANT TO POINT OUT THAT THERE WAS A RECALL ON THE TRANSFER CASE ON MY CAR. NOW WHEN I BOUGHT THE CAR THE REASON WHY I BOUGHT IT WITH HIGH MILEAGE WAS BECAUSE THE CAR WAS SUPPOSED TO BE CERTIFIED PREOWNED. I WAS GIVEN THE 1 YEAR WARRANTY. THEN I WAS TOLD THAT THE RECALL ON THE TRANSFER CASE WOULD BE VALID UNTIL 100000 MILE. SO WHEN MY TRANSFER CASE NEEDED TO BE REPAIRED AT 92000 MILES. I CONTACTED MAZDA & AFTER MONTHS OF BACK & FORTH I WAS TOLD I DIDN'T QUALIFY FOR THEM TO TAKE CARE OF THE REPAIR EVEN THOUGH IT LOOKS LIKE A MONSTER TOOK A BITE OUT OF THE TRANSFER CASE AT 92000 MILES BECAUSE ACCORDING TO THEIR RECORDS MY CAR WAS NOT CERTIFIED PREOWNED. IASKED TO RECONSIDER BECSUSE THE TRANSFER CASE WSS COMPLETELY DESTROYED ST 92000. THEY SAID THEY COULD NOT MAKE AN EXCEPTION WITH ME BECSUSE THEN THEY'D HAVE TO MAKE EXCEPTIONS FOR OTHERS. I WAS TOLD TO GET IN TOUCH WITH THE DEALER I'M GETTING IN TOUCH ABOUT THAT THIS WEEK. THERE IS SOMETHING ODD ABOUT ALL OF THIS. HOW COME MAZDA DOESN'T HAVE THE RECALLS FOR MY CAR THAT YOU HAVE?

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MY DRIVER SIDE HEADLIGHT WENT OUT A MONTH AGO. I CHANGED THE HID BULBS, THE FUSE AND NOTHING WAS WORKING. I TOOK IT TO A MAZDA DEALER FOR MY WARRANTY WHEN I BOUGHT IT. AFTER MAZDA CHECKED IT OUT, THEY FOUND MY HID BALLAST WAS FRIED DUE TO WATER CONDENSATION. MY HEAD LIGHT IS NOT BROKEN OR MISSING ANY PARTS. MY WARRANTY WILL NOT COVER IT. I HAVE READ IN SEVERAL SITES THAT THIS IS COMMON AND MAZDA KNOW ABOUT IT AND HAS DONE NOTHING TO FIX IT. I HAVE BEEN PULLED OVER SEVERAL TIMES CAUSE OF THIS.

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TAKADA AIRBAG RECALL

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DRIVERS LOW LIGHT BALLAST TOOK ON WATER AND RUSTED OUT CAUSING THE HEADLIGHT TO SHORT OUT.

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TAKATA INFLATORS RECALL? NO INCIDENT TO REPORT

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TL* THE CONTACT OWNS A 2011 MAZDA CX-9. WHILE DRIVING 40 MPH, THE BRAKE PEDAL WAS DEPRESSED, BUT WAS EXTREMELY FIRM. THE CONTACT STATED THAT GRADUALLY THE BRAKE PEDAL TRAVELED TO THE FLOORBOARD BEFORE THE VEHICLE WAS ABLE TO BE STOPPED. THE VEHICLE WAS TAKEN TO CARDINALEWAY MAZDA-PEORIA (8424 W BELL RD, PEORIA, AZ 85382, (623) 738-0755) WHERE IT WAS DIAGNOSED THAT THE BRAKE BOOSTER AND BRAKE BOOSTER SWITCH NEEDED TO BE REPLACED. THE CONTACT STATED THAT THE VEHICLE WAS CURRENTLY AT THE DEALER TO BE REPAIRED. THE CONTACT STATED THAT THE FAILURE WAS INTERMITTENT. THE MANUFACTURER WAS NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS 74,000.

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LOST BRAKING POWER. PEDAL HAS TO GO TO FLOOR TO WORK.

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BRAKE BOOSTER FAILURE BRAKE PEDAL HISSING AND STARTED TO STIFFEN I WAS DRIVING THEN STOPPED AT A TRAFFIC LIGHT NOTICED THAT THE BRAKES WERE HISSING AND WAS REALLY HARD TO PUSH ON TO A COMPLETE STOP

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SITTING AT A STOPLIGHT, MY BRAKE PEDAL CAME UP AND THE CAR DIED. RESTARTED IT, AND IT RAN FINE. HAPPENED AGAIN AT A STOPLIGHT. I TOOK IT TO A SHOP WHO SAID IT WAS A "MAZDA" ISSUE . WITHIN A WEEK, MY BRAKES STARTED TO NOT WORK. I TOOK IT TO MAZDA & THEY TOLD ME I WAS PAST THE 90,000 EXTENDED WARRANTY. I ASKED THEM WHY THEY WOULDN'T HONOR FIXING IT WHEN IT WAS A MAZDA ISSUE AND THEY JUST SAID I WAS PAST THE WARRANTY. BEWARE OF BUYING A "CERTIFIED USED CAR"! WARRANTIES/RECALLS WILL NOT BE SENT TO YOU!

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TAKATA RECALL I RECEIVED A LAWSUIT CARD IN THE MAIL OF A DEFECTIVE AIR BAG.

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TL* THE CONTACT OWNS A 2011 MAZDA CX-9. WHILE DRIVING, THE BRAKES WERE APPLIED AND FAILED TO RESPOND. ADDITIONALLY, THE BRAKE PEDAL BECAME HARD TO DEPRESS. THE LOCAL DEALER WAS NOT CONTACTED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 60,000. *CN

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STIFF PEDAL. NO BRAKES

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MY CARS BRAKE PEDAL SUDDENLY BECAME STIFF AND WOULD NOT STOP MY CAR. I HAD TO SWERVE TO PREVENT MYSELF FROM REAR ENDING THE VEHICLE IN FRONT OF ME. AT THE NEXT STOP LIGHT I WAS EXTREMELY CAUTIOUS AND AFTER I FINALLY STOPPED, AS I WAITED FOR THE GREEN LIGHT THE CAR BEGAN IDLING ODDLY THEN IT STALLED. WAS ABLE TO START IT BACK UP. IT SEEMS TO BE SHIFTING A LITTLE ODDLY TOO. VERY SCARY DRIVING MY CAR. INCREDIBLY LUCKY WE WEREN'T INJURED NOR WAS ANYONE ELSE. WILL HAVE IT TOWED TO THE SHOP TO BE SAFE.

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TL* THE CONTACT OWNS A 2011 MAZDA CX-9. WHILE DRIVING APPROXIMATELY 30 TO 40 MPH, THE CONTACT ENGAGED THE BRAKE PEDAL AND ATTEMPTED MAKE A LEFT TURN, BUT THE BRAKES FAILED TO ENGAGE. THE CONTACT WAS ABLE TO STEER THE VEHICLE ONTO A DIRT ROAD TO BRING THE VEHICLE TO A STOP. THE VEHICLE WAS TOWED TO THE HYUNDAI MAZDA DEALER (14821 PANDELLI ROAD VICTORVILLE, CA 92392 PHONE 760-241-3801) WHERE IT WAS DIAGNOSED THAT THE BRAKE BOOSTER FAILED. THE MANUFACTURER STATED THAT THE BRAKE BOOSTER FAILURE WAS NOT WARRANTED FOR 90,000 MILES. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 90,000.

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HAD A PROBLEM A FEW YEARS AGO RELATED TO THE TRACTION CONTROL SYSTEM AS INDICATED BY THE WARNING LIGHT APPEARING ON THE DASH. DEALER CONTACTED THE WARRANTY DEPARTMENT TO FILE A CLAIM AND SAID THAT IS WOULD NOT BE COVERED UNDER WARRANTY BECAUSE THEY FELT IT WAS DUE TO DIRT AND NOT A FAULTY SENSOR. THE DEALER NEVER CONFIRMED ONE OR THE OTHER. SECOND ISSUE IS RELATED TO A HISSING NOISE COMING FROM THE BREAK PEDDLE. RESEARCH SUGGESTED MAZDA WAS INVESTIGATED BY NHTSA BACK IN 2014 AND INSTEAD OF A RECALL, MAZDA ISSUED AND EXTENDED WARRANTY FOR 7 YEARS OR 90K MILES. UNFORTUNATELY MY VEHICLE IS WITHIN THE 7 YEARS BUT NOT THE 90K. I AM CURRENTLY AT 97K MILES. STILL WAITING TO SEE IF MAZDA WILL COVER THE REPAIR OR AT LEAST DISCOUNT IT.

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BREAKBOOSTER WHEN WE ASKED OUR MECHANIC TO CHECK IT AND END UP AFTER CALLING MAZDA FREMONT THAT IT IS COVERED BY THE EXTENDED WARRANTY FOR THIS. WHILE DRIVIG I THOUGHT I LOSS MY BREAK AND WAS NOT FULLY WORKING. WAS SCARED . MAZDA FREMONT ASSISTED US AND PROVIDED US A TEMPORARY CAR TO USE.

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