2016 Mazda CX-9 service brakes problems

What owners report

• “The vehicle has tire pressure monitoring system malfunction warnings and parking brake malfunction warnings even after taking to dealership to be fixed. Was told it’s a known problem by Mazda, should be recalled, but there were not any current recalls for the issue.”

  NHTSA complaint · filed 12/11/2023

• “Engine Coolant Leaking from rear of engine near Exhaust / turbocharger at Cylinder Head. No Warning Lights indicating problem until coolant level low causing overheating and fire risk. Rear Brakes not releasing completely from "City Mode" where brakes are kept close to rotor "to increase braking response in City driving" - causes premature brake wear, warped brake rotors (reoccurs within 10K miles from new / replaced rotors) Front Bumper Fascia keeps coming loose at clips near headlights on bo…”

  NHTSA complaint · filed 08/21/2022

• “MY WIFE AND DAUGHTERS TOOK A TRIP, AND ON THE WAY HOME, THE ENGINE LIGHT CAME ON. WHEN TURNING ON THE ENGINE TO CHECK THE ENGINE LIGHT, I NOTICED THAT THE BRAKE PEDAL WAS HARD. I WAS THINKING THE ENGINE LIGHT HAD TO DO WITH THE GAS CAP NOT BEING ON TIGHT SINCE FAMILY PURCHASED GAS ON THE TRIP BACK HOME. I DROVE THE CX-9 TO AUTOZONE TO DETERMINE THE CODE FOR THE ENGINE LIGHT. THE ATTENDANT AT AUTOZONE WAS UNABLE TO REGISTER A CODE. HOWEVER, I NOTICED THE BRAKES FELT DIFFERENT ON THE DRIVE TO AUTO…”

  NHTSA complaint · filed 08/17/2020

• “BOTH REAR BRAKES LOCKED UP ON SEPARATE OCCASION WHILE DRIVING ON THE FREEWAY AT ABOUT 70 MPH. EACH TIME THE BRAKE ENGAGED THEMSELVES AND LOCKED ONTO THE DISK/ROTOR. THIS CAUSED THE PADS TO BURN UP AND PRODUCE A LARGER QUANTITY OF SMOKE. ON ONE OCCASION THE ROTOR BECAME RED HOT, FLAME WAS VISIBLE, LOTS OF SMOKE WAS BEING PRODUCED, AND IT WARPED ROTOR. EVERY TIME IT OCCURRED I STOPPED THE VEHICLE AND TURNED IT OFF. AFTER THE RESTART OF THE VEHICLE THE BRAKES WERE NOT LOCKED BUT THE VEHICLE WOULD…”

  NHTSA complaint · filed 10/21/2019

• “BRAKE LIGHTS COME UP INTERMITTENTLY, ESPECIALLY WHEN TEMPERATURE IS LOW. ALSO, FRONT RADAR SENSOR SYSTEM MALFUNCTION AND SMART BRAKE SYSTEM MALFUNCTION WARNINGS COME UP ALSO,. THIS IS DURING THE DRIVE.”

  NHTSA complaint · filed 02/06/2019

• “I WAS DRIVING ON THE INTERSTATE AND THE TPMS WARNING CAME ON. I PULL OFF THE INTERSTATE AND PARK. THERE IS SMOKE COMING FROM THE RIGHT REAR WHEEL AND THE CENTER OF THE WHEEL IS EXTREMELY HOT, TOO HOT TO TOUCH. I CAN FEEL THE HEAT FROM ABOUT A FOOT AWAY. THERE IS METAL PINING AND GROANING AS IT COOLS DOWN, THE TIRE IS WARM, BUT NOT AS HOT AS THE CENTER A THE WHEEL. THE LEFT REAR WHEEL IS COOL TO THE TOUCH, AS ARE THE FRONT WHEELS. I TOGGLE THE ELECTRONIC PARKING BRAKE A FEW TIMES AND AFTER THE…”

  NHTSA complaint · filed 01/07/2019

• “DRIVING TO WORK IN THE MORNING AT 5:45AM ON 06/05/2018 GOING 65 MPH AND MY CAR CUTS ENGINE POWER AND STARTS LOWLY DECLINING PRESSING GAS DID NOTHING AND MULTIPLE NOTIFICATIONS FLASHING SUCH AS VEHICLE SYSTEM MALFUNCTION, FORWARD SMART CITY BRAKE SUPPORT MALFUNCTION, SMART BRAKE SYSTEM MALFUNCTION. I HAD TO PULL OFF TO THE SIDE OF THE HIGHWAY I CAN'T EVEN SAY I CAN PULL OFF SAFELY BECAUSE ALL POWER WAS CUT. SO LET THE CAR SIT FOR 5 MINUTES WHILE OFF AND THEN RESTARTED AND WAS ABLE TO MAKE IT …”

  NHTSA complaint · filed 08/08/2018

• “THIS INCIDENT HAPPENED ON 31ST JULY, WHEN MY WIFE WAS DRIVING THIS CAR ON HIGHWAY 4 MARTINEZ, CA AT AROUND 5.00 PM WITH OUR DAUGHTER (2 YEARS OLD) RETURNING FROM DAYCARE. SHE WAS DRIVING AT APPROX 60 MILE/HR, WHEN THE CAR STARTED GIVING AUDIO VISUAL WARNINGS ON MULTIPLE FAILURES AND THE CAR STARTED SLOWING DOWN WITHOUT RESPONDING TO THE GAS PEDAL AND ENGINE PROPULSION REDUCED TO 'ZERO'. MY WIFE PANICKED AND WAS LUCKILY ABLE TO PULL OVER ON THE CURB SIDE SAFELY, EVEN THOUGH TRAFFIC WAS VERY HIGH…”

  NHTSA complaint · filed 08/08/2018

Unverified owner reports from NHTSA's public complaint database.

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