2010 Mazda CX-9 problems and owner complaints

WAS DRIVING ON I-495E IN MARYLAND BETWEEN EXITS 28 AND 29. CHANGED LANES AND PUT FOOT DOWN ON GAS PEDAL TO ACCELERATE. SUDDENLY FELT LIKE GAS PEDAL WAS STUCK AND THAT BRAKING COULD ONLY SLOW BUT NOT STOP ACCELERATION. MOVED OVER A FEW LANES TO RIGHT SHOULDER AND AFTER CONTINUED FAILURE OF BRAKES TO STOP ACCELERATION (AND CONSIDERABLE ENGINE TORQUE) BEGAN TO APPLY EMERGENCY BRAKE. SLOWED ACCELERATION FURTHER BUT STILL COULD NOT BRING CAR TO A FULL STOP. FINALLY PUT CAR INTO NEUTRAL AND CAME TO A STOP. HAD TOWED TO NEAREST MAZDA DEALER, YET AFTER…

Owner-reported narrative. 19,000 miles reported. Look up ODI 10427053 at NHTSA ↗

TL* THE CONTACT OWNS A 2010 MAZDA CX-9. WHILE DRIVING APPROXIMATELY 10 MPH, THE VEHICLE UNCONTROLLABLY ACCELERATED INTO ONCOMING TRAFFIC. THE BRAKES WERE APPLIED REPEATEDLY WHEN SUDDENLY THE VEHICLE CAME TO A STOP. THE VEHICLE WAS TOWED TO AN AUTHORIZED DEALER FOR DIAGNOSIS WHERE THE TECHNICIAN WAS UNABLE TO LOCATE THE PROBLEM. THE MANUFACTURER WAS NOTIFIED OF THE UNINTENDED ACCELERATION FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 18,000.

Owner-reported narrative. 18,000 miles reported. Look up ODI 10449469 at NHTSA ↗

WHILE DRIVING MY 2010 MAZDA CX-9 APPROXIMATELY 65MPH ON INTERSTATE 270S IN MARYLAND, I PRESSED THE GAS PEDAL TO ACCELERATE IN AN ATTEMPT TO PASS SEVERAL VEHICLES WHO WERE TRAVELING IN THE RIGHT HAND LANE. ONCE I FELT THAT I HAD ENOUGH ADDITIONAL SPEED TO SUCCESSFULLY PASS THE VEHICLES, I RELEASED THE GAS PEDAL AND NOTED THAT THE CAR CONTINUED TO ACCELERATE. I ATTEMPTED TO APPLY MY BRAKES, BUT THEY WOULD NOT SLOW THE VEHICLE. AFTER SEVERAL UNSUCCESSFUL ATTEMPTS TO APPLY MY BRAKES, I SEARCHED FOR A SAFE PLACE TO CONTINUE TRAVELING AS MY VEHIC…

Owner-reported narrative. 25,068 miles reported. Look up ODI 10554259 at NHTSA ↗

VEHICLE BRAKES LIGHTING DIM WHILE COMING TO A STOP AND CAN NOT BE SEEN FROM OTHER VEHICLES APPROACHING FROM BEHIND ON THE ROAD. WHEN NOT REPLACED, STOP LIGHT WILL RUN CONTINUALLY OR NOT FUNCTION, POTENTIALLY CAUSING PREMATURE BULB FAILURE, SAFETY ISSUES AND/OR THE TRANSMISSION WILL NOT SHIFT OUT OF PARK. A FAILED STOPLIGHT SWITCH WILL PREVENT THE BRAKE LIGHT FROM ILLUMINATING WHEN THE BRAKE PEDAL IS APPLIED THAT MAY CAUSE A COLLISION AND A LIFE LOST. *TR

Owner-reported narrative. 60,000 miles reported. Look up ODI 10664091 at NHTSA ↗

THE CAR HAS BEEN TURNING OFF WHILE DRIVING WITH NO PRIOR INDICATIONS OR WARNINGS. ENGINE TURNS OFF AND STEERING WHEEL FREEZES AND LOCKS UP. THIS HAS OCCURRED MULTIPLE TIME AND WE HAVE TAKEN THE CAR TO THE DEALER A NUMBER OF TIMES WHO HAS INSPECTED IT AND EVEN KEPT IT AT THE SHOP DROVE IT FOR A NUMBER OF DAYS AND COULD NOT PINPOINT THE PROBLEM. WE HAVE MADE MAZDA USA AWARE OF THE ISSUE AND THE POTENTIAL THREAT OF THIS VEHICLE (THEY GAVE US A CASE # 149456450) HOWEVER, SADLY THEIR ATTITUDE IS THAT IF THE PROBLEM CANT BE PINNED THEN IT DOES…

Owner-reported narrative. 41,000 miles reported. Look up ODI 10569405 at NHTSA ↗

AFTER RECENTLY RECEIVING OUR VEHICLE BACK FROM A MAZDA DEALER FOR WARRANTY REPAIRS ON THE PTU AND CONTROL ARMS, WE WERE DRIVING DOWN THE HIGHWAY AT 65 MPH - INITIALLY GOING UP A HILL IN THE MOUNTAINS. THE CAR WOULD NOT SHIFT GEARS (AN AUTOMATIC) AND THEN WOULD NOT ACCELERATE PAST 30 MPH. NO DUMMY LIGHTS LIT WHATSOEVER. WE GOT TO THE TOP OF THE HILL AND HAVING NO PLACE TO PULL OFF ON THE HIGHWAY MOUNTAIN SHOULDER, STAYED IN THE LANE OF TRAFFIC WITH OUR HAZARDS ON. THE DOWN SIDE OF THE HILL WAS A 6% GRADE WITH A CLIFF ON THE OTHER SIDE OF THE…

Owner-reported narrative. 75,000 miles reported. Look up ODI 10914106 at NHTSA ↗

THE VEHICLE STALLS WHEN IDLING AT A STOP LIGHT OR IN A DRIVE THRU. THE VEHICLES MOTOR BEGINS TO SHAKE AND THEN EVENTUALLY DIES AND STALLS OUT AND THE VEHICLE MUST BE STARTED AGAIN WITH THE TURN OF THE IGNITION. THE BRAKING SYSTEM IS ALSO DEFECTIVE. WHEN AT A STOP LIGHT AND YOUR FOOT IS ON THE BRAKE PEDAL. THE PEDAL SUDDENLY SINKS AS IF THE BRAKE FLUID IN THE MASTER CYLINDER HAS DRAINED FULLY AND THE BRAKE PEDAL SINKS ALL THE WAY TO THE FLOOR AND THE VEHICLE SHOOTS FORWARD EVEN IF YOUR FOOT IS ON THE BRAKE. ANOTHER PROBLEM IS IN THE POWER DOO…

Owner-reported narrative. 44,521 miles reported. Look up ODI 10577269 at NHTSA ↗

I had engine failure with a complete loss of power and a shuttering of the steering wheel while pulling into a parking lot and going less than 30 miles per hour. The temperature gauze went from cold to hot suddenly. There were no leaks of coolant or oil and no signs that the engine was out of water or that the water pump had "melted". On the final car repair trip we found out that the engine has an internal water pump that failed and resulted in oil & water getting into the engine. The engine light NEVER came on, I had complained about the tire…

Owner-reported narrative. Look up ODI 11460271 at NHTSA ↗

NEW VEHICLE WITH DEAD BATTERY ON FOUR SEPERATE OCCASIONS. TOOK TO DEALERSHIP, BATTERY REPLACED. CHILD COMPLAINED THAT SEAT WAS HOT. NEXT DAY DEALER NOTIFIED AND CAR BROUGHT IN T ODEALERSHIP. A LOANER VEHICLE WAS RECEIVED. I WAS NOTIFIED HEATED SEATS WITH RECALL AND WOULD BE DISCONNECTED AT THIS TIME. THIS ALL OCCURED IN A TWO WEEK PERIOD IN JANUARY. MARCH 17 TOOK CAR BACK TO DEALERSHIP TO HAV RECALL ON HEATED SEATS FIXED. MARCH 25TH ATTEMPTED TO USE HEATED SEATS, DID NOT WORK. MAR 30TH VEHICLE BACK TO DEALERSHIP. HEATED SEATS WORKING AFTER THEY…

Owner-reported narrative. 45 miles reported. Look up ODI 10323481 at NHTSA ↗

WE WERE SITTING IN A PARKING LOT WAITING ON A PIZZA. WE NOTICED THE A/C WASN'T COOLING, AND THEN NOTICED THE CAR WAS STARTING TO OVERHEAT. (THIS WAS THE FIRST TIME EVER). WE CHECKED THE RADIATOR, IT WAS EMPTY. WE PURCHASED COOLANT AND FILLED UP THE RESERVOIR. NEVER SAW ANY LEAKS. CAR STARTED BUT SEEMED SLUGGISH LIKE THE BATTERY WAS LOW. WE GOT OUR PIZZA AND DROVE ABOUT 6 MILES WHERE WE PARKED TILL WE TOOK IT TO THE DEALER ON MONDAY. OUR MECHANIC CALLED ME LATER TO TELL ME THAT THE WATER PUMP HAD FAILED AND THAT IT HAD LEAKED INTO THE OIL…

Owner-reported narrative. 108,000 miles reported. Look up ODI 11394287 at NHTSA ↗