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2012 Mazda CX-9

Owner reports · Recalls · Investigations

More warning signs than most CX-9 years

Owner complaints for the 2012 Mazda CX-9 are substantially higher than the model-year median of 61.

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When problems were reported

Mileage at the reported incident

170 reports with mileage · 51 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Service Brakes. Review the 139 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 25 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Air Bags. Review the 23 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

9 crash reports0 fire reports4 injury reports

Service Brakes complaints

139 reports
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59,000 miles · Nov 29, 2016
Service Brakes

I HAD TO PUSH HARDER AND HARDER ON MY MAZDA CX9 BRAKE PEDAL FOR MY CAR TO SLOWDOWN AND TO COME TO A COMPLETE STOP . THIS HAPPENED WHEN BACKING OUT OF MY GARAGE AND THE BRAKE IS GETTING WORSE EVERYDAY ON MY WAY TO WORK . ON THE DAY WHEN I HAD TO TAKE MY CAR TO THE MECHANICS , I HAD PRACTICALLY PUT BOTH FEET ON THE BRAKE PEDAL F…

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I HAD TO PUSH HARDER AND HARDER ON MY MAZDA CX9 BRAKE PEDAL FOR MY CAR TO SLOWDOWN AND TO COME TO A COMPLETE STOP . THIS HAPPENED WHEN BACKING OUT OF MY GARAGE AND THE BRAKE IS GETTING WORSE EVERYDAY ON MY WAY TO WORK . ON THE DAY WHEN I HAD TO TAKE MY CAR TO THE MECHANICS , I HAD PRACTICALLY PUT BOTH FEET ON THE BRAKE PEDAL FOR THE CAR TO STOP . IT WAS A TERRIFYING EXPERIENCE THAT THE CAR WOULD NOT STOP AND CONTINUED TO ROLL FORWARD AND MORE SO AT EVERY TRAFFIC LIGHT . I TOOK MY CAR TO TWO DIFFERENT MECHANICS WITHIN ONE HOUR SINCE I DIDN'T BELIEVE THE FIRST ONE AND WANTED A SECOND OPINION . THEY BOTH TOLD ME THAT THE BRAKE BOOSTER AND THE MASTER CYLINDER WERE DEFECTIVE AND NEEDED TO REPLACE IMMEDIATELY BECAUSE I JUST DON'T HAVE BRAKE ON MY CAR ! THEY SAID THIS SHOULD NOT HAPPEN IN A CAR WITH ONLY 59,000 MILES . THE FIRST MECHANIC EVEN HAD ME SIGNED A WAIVER SINCE I DIDN'T WANT THEM TO FIX THE BRAKE AND WANTED A SECOND OPINION . I DID NOT BELIEVE THAT IT WOULD COST ME $1062,07 TO FIX THE BRAKE . UNFORTUNATELY THE SECOND MECHANIC GAVE ME THE SAME DIAGNOSTIC WITH THE COST OF $843 AND TWO DAYS TO ORDER THE PARTS SINCE IT WAS ON SATURDAY AND RECOMMENDED ME TO LEAVE THE CAR IN THEIR GARAGE . AND TO MAKE THE THING WORSE MY MAZDA DEALER SERVICE IS NOT OPEN ON THE WEEKEND . I GOOGLED AND FOUND OUT THAT THE DEFECTIVE BRAKE HAS HAD HAPPENED TO SEVERAL OTHER MAZDA CX 9 OWNERS AND NO RECALLS HAD EVER BEEN ISSUED . I DO HAVE PHOTOS OF THE DEFECTIVE BRAKE BOOST AND MASTER CYLINDER BUT DON'T KNOW HOW TO UPLOAD .

NHTSA ODI #10928685

58,500 miles · Nov 28, 2016
Service Brakes

DROVE ~600 MILES WITH A FAILED BRAKE BOOSTER. FOUND OUT VIA INTERNET THAT MAZDA HAD PROVIDED AN EXTENDED WARRANTY TO COVER THIS DEFECT. WHEN THE DEALERSHIP WHERE I TOOK THE CAR TRIED TO FIND THE PART IT WAS ON BACKORDER WITH MAZDA. THE MAZDA SERVICE MANAGER AT PRESTON MAZDA, JOHN ROSENSTEEL, HAD ONE OF HIS PEOPLE DRIVE TO BUTLER…

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DROVE ~600 MILES WITH A FAILED BRAKE BOOSTER. FOUND OUT VIA INTERNET THAT MAZDA HAD PROVIDED AN EXTENDED WARRANTY TO COVER THIS DEFECT. WHEN THE DEALERSHIP WHERE I TOOK THE CAR TRIED TO FIND THE PART IT WAS ON BACKORDER WITH MAZDA. THE MAZDA SERVICE MANAGER AT PRESTON MAZDA, JOHN ROSENSTEEL, HAD ONE OF HIS PEOPLE DRIVE TO BUTLER, PA FROM BOARDMAN, OH TO PICK UP THE PART. I TOOK THE CAR TO THE DEALER ON THE DAY BEFORE THANKSGIVING AND THE CAR WAS READY TO GO WITH A NEW BOOST UNIT BY FRIDAY. THIS WAS ALL DUE TO THE EFFORTS OF AN EXCELLENT SERVICE MANAGER AT THE DEALERSHIP. MAZDA FAILED ME AS A CUSTOMER BY NOT HAVING THE BRAKE BOOSTER IN STOCK EVEN THOUGH IT WAS THE SUBJECT OF MULTIPLE FAILURES AND AN EXTENDED WARRANTY. *TR

NHTSA ODI #10928427

18,300 miles · Oct 30, 2016
Service Brakes

WHILE BRAKING NORMALLY FOR A STOP SIGN, THE BRAKES BECAME HARD TO PRESS AND DID NOT STOP THE CAR AS NORMAL. HISSING FROM THE PEDAL AREA WAS HEARD AND THE CAR FINALLY STOPPED HALFWAY THROUGH AN INTERSECTION AFTER NEARLY STANDING ON THE BRAKES.

NHTSA ODI #10920085

15 miles · Sep 6, 2016
Service Brakes

BRAKES FELT HARD/STIFF AND VEHICLE DIDN'T STOP AS EXPECTED. ALMOST HIT ANOTHER CAR. HAD TO APPLY BRAKES MULTIPLE TIMES TO SLOW DOWN.

NHTSA ODI #10903891

101,000 miles · Aug 31, 2016
Service Brakes

LOSS OF BRAKE FLUID; BRAKE PEDAL HARD TO PUSH. UNABLE TO STOP CAR; HISSING NOISE AT BRAKE PEDAL.

NHTSA ODI #10899735

33,000 miles · Aug 30, 2016
EngineFuel/propulsion SystemPower Train

TL* THE CONTACT OWNS A 2012 MAZDA CX-9. WHILE DRIVING 20 MPH, THERE WAS A LOUD METAL TO METAL NOISE COMING FROM THE REAR OF THE VEHICLE. IN ADDITION, THE GEARS FAILED TO SHIFT CORRECTLY AND THE OIL AND ENGINE INDICATORS ILLUMINATED. THE DEALER DIAGNOSED THAT THE BRAKES NEEDED TO BE CHANGED. THE BRAKES WERE REPLACED, BUT THE FAIL…

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TL* THE CONTACT OWNS A 2012 MAZDA CX-9. WHILE DRIVING 20 MPH, THERE WAS A LOUD METAL TO METAL NOISE COMING FROM THE REAR OF THE VEHICLE. IN ADDITION, THE GEARS FAILED TO SHIFT CORRECTLY AND THE OIL AND ENGINE INDICATORS ILLUMINATED. THE DEALER DIAGNOSED THAT THE BRAKES NEEDED TO BE CHANGED. THE BRAKES WERE REPLACED, BUT THE FAILURE RECURRED AND WORSENED. THE CONTACT ALSO SMELLED FUEL COMING FROM THE VEHICLE AND THE VEHICLE HAD TROUBLE ACCELERATING. THE MANUFACTURER WAS NOTIFIED. THE FAILURE MILEAGE WAS 33,000.

NHTSA ODI #10899636

44,000 miles · Aug 16, 2016
Service Brakes

AT 44,000 MILES, BRAKES FEEL HARD AND VEHICLE BRAKES SLOWER THAN IT SHOULD WAS NEARLY IN AN ACCIDENT DUE TO THIS. IT TOOK A MUCH LONGER DISTANCE TO STOP. EMERGENCY REPAIR AT LOCAL SHOP INDICATED BRAKE BOOSTER FAILED. REALLY DANGEROUS SITUATION. MAZDA SHOULD RECALL

NHTSA ODI #10896239

40,000 miles · Aug 8, 2016
Service Brakes

BRAKE PEDAL BECAME SPONGY AND STOPPING POWER DIMINISHED CONSIDERABLY. HEARD A LOUD HISSING SOUND FROM THE FRONT DRIVER'S SIDE. HAD TO FULLY DEPRESS THE BRAKE PEDAL TO STOP QUICKLY.

NHTSA ODI #10894100

107,000 miles · Aug 7, 2016
Service Brakes

BRAKE BOOSTER - WHEN DEPRESSING THE BRAKES (ANY TIME OF DAY) THERE WAS A STRANGE HISSING NOISE, LIKE AIR BEING RELEASED FROM A BALLOON. IF THE PEDAL WAS PRESSED CLOSER TO THE FLOOR THERE WAS A HIGH PITCHED SQUEAL. BRAKES BECAME VERY HARD TO PRESS AND THE CAR BECAME EXTREMELY DIFFICULT TO STOP. LUCKILY THERE WERE NO CARD IN FRONT…

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BRAKE BOOSTER - WHEN DEPRESSING THE BRAKES (ANY TIME OF DAY) THERE WAS A STRANGE HISSING NOISE, LIKE AIR BEING RELEASED FROM A BALLOON. IF THE PEDAL WAS PRESSED CLOSER TO THE FLOOR THERE WAS A HIGH PITCHED SQUEAL. BRAKES BECAME VERY HARD TO PRESS AND THE CAR BECAME EXTREMELY DIFFICULT TO STOP. LUCKILY THERE WERE NO CARD IN FRONT OF ME. A REPAIR SHOP INSTRUCTED ME TO CHECK BRAKE FLUID (WHICH WAS SLIGHTLY LOW, AND I FILLED IT). THIS DID NOT SOLVE THE PROBLEM. BRAKES ARE EVEN HARDER TO PRESS. FROM RESEARCH I SEE THAT MAZDA HAS HAD THIS PROBLEM FOR SOME YEARS NOW. THEY SHOULD RECALL THESE CARS AND REPLACE THE BOOSTERS BEFORE SOMEONE IS KILLED. WE HAVE FOUR KIDS IN OUR HOUSE AND THIS IS OUR ONLY TRANSPORTATION. THE CAR IS NO LONGER UNDER WARRANTY SO I WILL BE LEFT REPLACING THIS ON MY OWN.

NHTSA ODI #10893864

75,000 miles · Aug 2, 2016
Service Brakes

BREAKS SLOWLY STRTED TO GET HARFER TO PRESS , HERE AND THERE AND LAST FRIDAY WENT TO TAKE NY KIDS TO THE STORE AND A COUPLE NEIGHBORHOOD KIDS TAGED ALONG WHEN I GOT TO THE INTERSECTION MY BREAK PEDAL WOULD NOT PRESS DOWN SO THANKFULLY NO CARS WERE COMING AS I SLOW ROLLED THROUGH THE STOP SIGN ON A VERY BUSY FAST SPEED HIGWAY . C…

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BREAKS SLOWLY STRTED TO GET HARFER TO PRESS , HERE AND THERE AND LAST FRIDAY WENT TO TAKE NY KIDS TO THE STORE AND A COUPLE NEIGHBORHOOD KIDS TAGED ALONG WHEN I GOT TO THE INTERSECTION MY BREAK PEDAL WOULD NOT PRESS DOWN SO THANKFULLY NO CARS WERE COMING AS I SLOW ROLLED THROUGH THE STOP SIGN ON A VERY BUSY FAST SPEED HIGWAY . CALLED MAZDA AND THEY SAID THEY HAVE HAD ISSUES . PLEASE IF U NOTICE ANY BREAK ISSUES GET THEM FIXED RIGHT AWAY THIS STORY COULD HAVE ENDED MUCH DIFFRENTLY WITH THE LOSS OF 5 KIDS KILLED BECAUSE THIS IS NOT A RECALL JUST A COMMON COMPLAINT AT THIS POINT IT WAS UNDER INVESTAGATION AT ONE POINT . MAZDA NEEDS TO STEP UP AND SEND LETTERS TO OWNERS OF THIS ISSUE .LET ME NOTE MAZDA WAS QIUCK TO GET IT N AND FIXED AND GAVE ME A RENTAL . THANK U FOR THAT BUT ALL I CAN THINK ABOUT IS HOW ALL THIS COULD HAVE ENDED .

NHTSA ODI #10892517

Official recalls

4

19V782000 · Air Bags:frontal:passenger Side:inflator Module

Oct 31, 2019

Mazda North American Operations (Mazda) is recalling certain 2007-2012 CX-7, CX-9, and 2009-2012 Maza6 vehicles. These vehicles had their passenger frontal air bag inflators previously replaced under a prior recall using inflators of the same design. The inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, temperature and temperature cycling.

Consequence & remedy

Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.

Remedy: Owners are advised not to drive their vehicles until the repair has been performed. Mazda will notify owners, and dealers will replace the front passenger air bag inflator with an alternate one, free of charge. The recall began December 3, 2019. Owners may contact Mazda customer service at 1-800-222-5500, option 4. Mazda's number for this recall is 1317F. Note: This recall supersedes recalls 16V356 and 17V012.

18V717000 · Air Bags:frontal:passenger Side:inflator Module

Oct 12, 2018

Mazda North American Operations (Mazda) is recalling certain 2014-2015 Mazda CX-9 vehicles sold, or ever registered in the states of Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands or "Zone A." Additionally, unless covered in "Zone A," Mazda is recalling certain 2011-2013 Mazda6, 2011-2012 CX-7, and 2011-2015 CX-9 sold, or ever registered in the states of Arizona, Arkansas, Delaware, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, West Virginia and the District of Columbia, or "Zone B." Additionally, unless covered in Zone A or Zone B, Mazda is recalling certain 2010-2013 Mazda6, 2010-2012 CX-7, and 2010-2015 CX-9 vehicles ever registered in the states of Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming or "Zone C." These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the passenger frontal air bag, these inflators may explode due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.

Consequence & remedy

Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.

Remedy: Mazda will notify owners, and dealers will replace the front passenger air bag inflator with an alternate inflator, free of charge. The recall began November 9, 2018. Owners may contact Mazda customer service at 1-800-222-5500, Option 4. Mazda's number for this recall is 1317F.

17V457000 · Air Bags:frontal:passenger Side:inflator Module

Jul 18, 2017

Mazda North America Operations (Mazda) is recalling certain 2012 CX-7, CX-9 and Mazda6 vehicles sold, or ever registered, in the states of Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands, or "Zone A." Additionally, unless included in "Zone A" above, Mazda is recalling certain 2009 CX-7, CX-9 and Mazda6 vehicles sold, or ever registered in the states of Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia, or "Zone B." Additionally, unless included in "Zone A" or "Zone B" above, Mazda is recalling certain 2007-2008 CX-7 and CX-9 sold, or ever registered in the states of Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming. These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the passenger frontal air bag, these inflators may rupture due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.

Consequence & remedy

Consequence: An inflator rupture may result in metal fragments striking the vehicle occupants resulting in serious injury or death.

Remedy: Owners are advised not to drive their vehicles until the remedy is performed. Mazda will notify owners, and dealers will replace the front passenger side air bag inflator with an alternate inflator, free of charge. The recall began October 4, 2017. Owners may contact Mazda customer service at 1-800-222-5500. Mazda's number for this recall is 1317F. Note: This recall supersedes recall 17V-012.

15V451000 · Suspension:front:control Arm:lower Arm; Suspension:front:control Arm:lower Ball Joint

Jul 20, 2015

Mazda North American Operations (Mazda) is recalling certain model year 2007-2014 CX-9 vehicles manufactured October 24, 2006, to December 28, 2013. The affected vehicles have front suspension ball joints that may corrode from water leaking into the fitting.

Consequence & remedy

Consequence: Over time, the ball joint corrosion may result in the front lower control arm separating from the ball joint, causing a loss of steering control and increasing the risk of a crash.

Remedy: Mazda will notify owners, and dealers will replace both the left and right lower control arms, free of charge. The recall began on September 14, 2015. The recall will begin with model year 2007-2009 vehicles registered in Connecticut, Delaware, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, Washington D.C., West Virginia, and Wisconsin. The second phase will be for model year 2010-2014 vehicles in the same states. Finally, all remaining vehicles will be remedied. Owners may contact Mazda customer service at 1-800-222-5500. Mazda's number for this recall is 8515G.

Additional source detail variants (2)

Suspension:front:control Arm:lower Ball Joint

Mazda North American Operations (Mazda) is recalling certain model year 2007-2014 CX-9 vehicles manufactured October 24, 2006, to December 28, 2013. The affected vehicles have front suspension ball joints that may corrode from water leaking into the fitting.

Consequence: Over time, the ball joint corrosion may result in the front lower control arm separating from the ball joint, causing a loss of steering control and increasing the risk of a crash.

Remedy: Mazda will notify owners, and dealers will replace both the left and right lower control arms, free of charge. The recall began on September 14, 2015. The recall will begin with model year 2007-2009 vehicles registered in Connecticut, Delaware, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, Washington D.C., West Virginia, and Wisconsin. The second phase will be for model year 2010-2014 vehicles in the same states. Finally, all remaining vehicles will be remedied. Owners may contact Mazda customer service at 1-800-222-5500. Mazda's number for this recall is 8515G.

Suspension:front:control Arm:lower Arm

Mazda North American Operations (Mazda) is recalling certain model year 2007-2014 CX-9 vehicles manufactured October 24, 2006, to December 28, 2013. The affected vehicles have front suspension ball joints that may corrode from water leaking into the fitting.

Consequence: Over time, the ball joint corrosion may result in the front lower control arm separating from the ball joint, causing a loss of steering control and increasing the risk of a crash.

Remedy: Mazda will notify owners, and dealers will replace both the left and right lower control arms, free of charge. The recall began on September 14, 2015. The recall will begin with model year 2007-2009 vehicles registered in Connecticut, Delaware, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, Washington D.C., West Virginia, and Wisconsin. The second phase will be for model year 2010-2014 vehicles in the same states. Finally, all remaining vehicles will be remedied. Owners may contact Mazda customer service at 1-800-222-5500. Mazda's number for this recall is 8515G.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

2

PE19006 · Inadvertent Curtain Air Bag Deployment

Opened May 2, 2019 · Closed Jan 15, 2021

Status: closed (inferred from source dates) · Air Bags; Air Bags:side/window; Air Bags:side/window:curtain

The Office of Defects Investigation (ODI) opened this Preliminary Evaluation (PE19-006) on May 2, 2019 to investigate two Vehicle Owner Questionnaires (VOQs) and Early Warning Reporting data related to allegations of inadvertent deployment (IAD) of side curtain airbags in Model Year (MY) 2010 through 2013 Mazda CX-9 vehicles. ODI sent an Information Request (IR) to Mazda North America Operations, LLC. to gather information about the alleged defect in the subject vehicles. In the 20 months since opening the PE, ODI has received three additional VOQs. To date, there have been a total of 11 IAD incidents within the identified population of 104,360 vehicles. Of the 11 incidents, no serious injuries were reported. The last known incident occurred in December 2020.Mazda's response to ODI's IR letter identified the root cause as a manufacturing issue of the Bosch SMG076 Roll Rate Sensor within the Restraint Control Module (RCM). During the manufacturing calibration process, small particles may be generated that could affect roll sensor capacitance, which could lead to a loss of curtain airbag protection or an erroneous deployment command. On November 19, 2012, a revised Roll Rate Sensor calibration process was launched, establishing a clean point for the issue. In its responses to ODI, Mazda has assessed the condition as a low risk to motor vehicle safety, with low incident frequency not warranting action. Any RCM data indicating a malfunctioning Roll Rate Sensor will result in the illumination of the airbag warning light. In the event of an erroneous curtain airbag deployment, there is no contact with properly seated occupants. Additionally, the condition is not affected by deterioration or wear, and known incidents established a random pattern of occurrence.During the investigation, ODI examined the injury risk to vehicle occupants from curtain airbag deployments. It was determined that the subject vehicles do not pose a substantial risk to out of position occupants, as testing data falls within Technical Working Group (TWG) reference values. Modeling simulation based on data provided by Mazda for properly seated occupants during static and dynamic airbag deployments indicated sufficient head clearance and no risk of brain injury. ODI analysis reveals that inadvertent deployment incident rates of curtain airbags in the subject vehicles are low through approximately ten years in service. Incident frequency does not meet values warranting recall action, but rather align closely with baseline frequency of general inadvertent deployments which are known to occur in rare driving conditions. Additionally, warranty analysis of RCM failures resulting in a loss of curtain airbag protection revealed low claim rates.Based on the analysis conducted, this investigation has been closed. The closing of this investigation does not foreclose the Agency from taking further action, if warranted, or the potential for a future finding that a safety-related defect exists, based upon additional information the Agency may receive.The five ODI complaints cited above can be reviewed at NHTSA.gov under the following identification numbers: 10905492, 11165925, 11270089, 11310044, 11385219.

Additional source detail variants (3)

Air Bags

The Office of Defects Investigation (ODI) opened this Preliminary Evaluation (PE19-006) on May 2, 2019 to investigate two Vehicle Owner Questionnaires (VOQs) and Early Warning Reporting data related to allegations of inadvertent deployment (IAD) of side curtain airbags in Model Year (MY) 2010 through 2013 Mazda CX-9 vehicles. ODI sent an Information Request (IR) to Mazda North America Operations, LLC. to gather information about the alleged defect in the subject vehicles. In the 20 months since opening the PE, ODI has received three additional VOQs. To date, there have been a total of 11 IAD incidents within the identified population of 104,360 vehicles. Of the 11 incidents, no serious injuries were reported. The last known incident occurred in December 2020.Mazda's response to ODI's IR letter identified the root cause as a manufacturing issue of the Bosch SMG076 Roll Rate Sensor within the Restraint Control Module (RCM). During the manufacturing calibration process, small particles may be generated that could affect roll sensor capacitance, which could lead to a loss of curtain airbag protection or an erroneous deployment command. On November 19, 2012, a revised Roll Rate Sensor calibration process was launched, establishing a clean point for the issue. In its responses to ODI, Mazda has assessed the condition as a low risk to motor vehicle safety, with low incident frequency not warranting action. Any RCM data indicating a malfunctioning Roll Rate Sensor will result in the illumination of the airbag warning light. In the event of an erroneous curtain airbag deployment, there is no contact with properly seated occupants. Additionally, the condition is not affected by deterioration or wear, and known incidents established a random pattern of occurrence.During the investigation, ODI examined the injury risk to vehicle occupants from curtain airbag deployments. It was determined that the subject vehicles do not pose a substantial risk to out of position occupants, as testing data falls within Technical Working Group (TWG) reference values. Modeling simulation based on data provided by Mazda for properly seated occupants during static and dynamic airbag deployments indicated sufficient head clearance and no risk of brain injury. ODI analysis reveals that inadvertent deployment incident rates of curtain airbags in the subject vehicles are low through approximately ten years in service. Incident frequency does not meet values warranting recall action, but rather align closely with baseline frequency of general inadvertent deployments which are known to occur in rare driving conditions. Additionally, warranty analysis of RCM failures resulting in a loss of curtain airbag protection revealed low claim rates.Based on the analysis conducted, this investigation has been closed. The closing of this investigation does not foreclose the Agency from taking further action, if warranted, or the potential for a future finding that a safety-related defect exists, based upon additional information the Agency may receive.The five ODI complaints cited above can be reviewed at NHTSA.gov under the following identification numbers: 10905492, 11165925, 11270089, 11310044, 11385219.

Air Bags:side/window:curtain

The Office of Defects Investigation (ODI) opened this Preliminary Evaluation (PE19-006) on May 2, 2019 to investigate two Vehicle Owner Questionnaires (VOQs) and Early Warning Reporting data related to allegations of inadvertent deployment (IAD) of side curtain airbags in Model Year (MY) 2010 through 2013 Mazda CX-9 vehicles. ODI sent an Information Request (IR) to Mazda North America Operations, LLC. to gather information about the alleged defect in the subject vehicles. In the 20 months since opening the PE, ODI has received three additional VOQs. To date, there have been a total of 11 IAD incidents within the identified population of 104,360 vehicles. Of the 11 incidents, no serious injuries were reported. The last known incident occurred in December 2020.Mazda's response to ODI's IR letter identified the root cause as a manufacturing issue of the Bosch SMG076 Roll Rate Sensor within the Restraint Control Module (RCM). During the manufacturing calibration process, small particles may be generated that could affect roll sensor capacitance, which could lead to a loss of curtain airbag protection or an erroneous deployment command. On November 19, 2012, a revised Roll Rate Sensor calibration process was launched, establishing a clean point for the issue. In its responses to ODI, Mazda has assessed the condition as a low risk to motor vehicle safety, with low incident frequency not warranting action. Any RCM data indicating a malfunctioning Roll Rate Sensor will result in the illumination of the airbag warning light. In the event of an erroneous curtain airbag deployment, there is no contact with properly seated occupants. Additionally, the condition is not affected by deterioration or wear, and known incidents established a random pattern of occurrence.During the investigation, ODI examined the injury risk to vehicle occupants from curtain airbag deployments. It was determined that the subject vehicles do not pose a substantial risk to out of position occupants, as testing data falls within Technical Working Group (TWG) reference values. Modeling simulation based on data provided by Mazda for properly seated occupants during static and dynamic airbag deployments indicated sufficient head clearance and no risk of brain injury. ODI analysis reveals that inadvertent deployment incident rates of curtain airbags in the subject vehicles are low through approximately ten years in service. Incident frequency does not meet values warranting recall action, but rather align closely with baseline frequency of general inadvertent deployments which are known to occur in rare driving conditions. Additionally, warranty analysis of RCM failures resulting in a loss of curtain airbag protection revealed low claim rates.Based on the analysis conducted, this investigation has been closed. The closing of this investigation does not foreclose the Agency from taking further action, if warranted, or the potential for a future finding that a safety-related defect exists, based upon additional information the Agency may receive.The five ODI complaints cited above can be reviewed at NHTSA.gov under the following identification numbers: 10905492, 11165925, 11270089, 11310044, 11385219.

Air Bags:side/window

The Office of Defects Investigation (ODI) opened this Preliminary Evaluation (PE19-006) on May 2, 2019 to investigate two Vehicle Owner Questionnaires (VOQs) and Early Warning Reporting data related to allegations of inadvertent deployment (IAD) of side curtain airbags in Model Year (MY) 2010 through 2013 Mazda CX-9 vehicles. ODI sent an Information Request (IR) to Mazda North America Operations, LLC. to gather information about the alleged defect in the subject vehicles. In the 20 months since opening the PE, ODI has received three additional VOQs. To date, there have been a total of 11 IAD incidents within the identified population of 104,360 vehicles. Of the 11 incidents, no serious injuries were reported. The last known incident occurred in December 2020.Mazda's response to ODI's IR letter identified the root cause as a manufacturing issue of the Bosch SMG076 Roll Rate Sensor within the Restraint Control Module (RCM). During the manufacturing calibration process, small particles may be generated that could affect roll sensor capacitance, which could lead to a loss of curtain airbag protection or an erroneous deployment command. On November 19, 2012, a revised Roll Rate Sensor calibration process was launched, establishing a clean point for the issue. In its responses to ODI, Mazda has assessed the condition as a low risk to motor vehicle safety, with low incident frequency not warranting action. Any RCM data indicating a malfunctioning Roll Rate Sensor will result in the illumination of the airbag warning light. In the event of an erroneous curtain airbag deployment, there is no contact with properly seated occupants. Additionally, the condition is not affected by deterioration or wear, and known incidents established a random pattern of occurrence.During the investigation, ODI examined the injury risk to vehicle occupants from curtain airbag deployments. It was determined that the subject vehicles do not pose a substantial risk to out of position occupants, as testing data falls within Technical Working Group (TWG) reference values. Modeling simulation based on data provided by Mazda for properly seated occupants during static and dynamic airbag deployments indicated sufficient head clearance and no risk of brain injury. ODI analysis reveals that inadvertent deployment incident rates of curtain airbags in the subject vehicles are low through approximately ten years in service. Incident frequency does not meet values warranting recall action, but rather align closely with baseline frequency of general inadvertent deployments which are known to occur in rare driving conditions. Additionally, warranty analysis of RCM failures resulting in a loss of curtain airbag protection revealed low claim rates.Based on the analysis conducted, this investigation has been closed. The closing of this investigation does not foreclose the Agency from taking further action, if warranted, or the potential for a future finding that a safety-related defect exists, based upon additional information the Agency may receive.The five ODI complaints cited above can be reviewed at NHTSA.gov under the following identification numbers: 10905492, 11165925, 11270089, 11310044, 11385219.

PE15022 · Lower Ball Joint Separation

Opened Jun 9, 2015 · Closed Aug 20, 2015

Status: closed (inferred from source dates) · Suspension:front:control Arm:lower Ball Joint

In an July 7,2015 letter to NHTSA, Mazda identified a safety defect that could result in lower ball joint separation in approximately 193,484 model year (MY) 2007 through 2014 Mazda CX-9 vehicles (NHTSA Recall No. 15V-451,Mazda 8515G).Mazda indicated that damage to the ball joint boot may allow water to enter the front suspension ball joint fitting during use which may result in premature ball joint wear and a progressively looser joint.In January 2014, Mazda implemented redesigned lower control arms in production vehicles to improve the durability of the lower ball joints.The redesign involved changing the shape of the top surface of the ball joint boot cover and adding a suspension plate to the undersurface of the knuckle.Mazda's recall will replace the defect lower control arms with the redesigned parts.ODI's analysis of information collected during PE15-022 identified a total of 62 ball joint separation incidents, including 34 identified in ODI complaints and 31 identified in Mazda complaints and field reports (3 of the Mazda records involve vehicles/incidents that were also reported to ODI).When Mazda's design change was implemented, most of the field experience related to lower ball joints involved complaints of noise and premature wear-out.Only 1 of the ODI and 6 of the additional Mazda separation complaints identified in ODI's analysis were reported prior to January 2014.Significant increases in the number and trend in separation complaints were observed in 2015, when 30 of the ODI complaints and 16 of the additional Mazda complaints were reported.The report trend appears to be accelerating, with 29 of the reports received after ODI opened PE15-022 on June 9, 2015.There has been one crash reported to ODI related to the alleged defect (VOQ 10746510). This investigation is closed based on Mazda's recall.The 34 VOQs associated with this investigation are: 10747358, 10746510, 10744897, 10743509, 10736229, 10735938, 10734763, 10734302, 10734290, 10733813, 10732578, 10732217, 10732154, 10731850, 10730736, 10730280, 10730143, 10730114, 10726622, 10726480 10726448, 10726168, 10725839, 10725567, 10725488, 10725427, 10725390, 10717510, 10714469, 10695142, 10668978, 10648429, 10640541, 10546535