NHTSA owner reports · September 18, 2026 snapshot.
Engine complaints
17 reportsClear category filterMileage unknown · Apr 14, 2026
Engine
Engine throwing a code after dying at intersection. Found that it isa known issue for this vehicle and repair costs are astronomical. Diagnostic Summary: 2013 Mazda CX-9 (3.7L V6)Issue: Faulty Crankshaft/Camshaft Correlation (Code P0016)Current Mileage: ~160,000 miles Reported Symptoms: Extended cranking (long start), rattle up…
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Engine throwing a code after dying at intersection. Found that it isa known issue for this vehicle and repair costs are astronomical. Diagnostic Summary: 2013 Mazda CX-9 (3.7L V6)Issue: Faulty Crankshaft/Camshaft Correlation (Code P0016)Current Mileage: ~160,000 miles Reported Symptoms: Extended cranking (long start), rattle upon startup, and rattle under light acceleration. The 2013 Mazda CX-9 is KNOWN for a serious issue where the internal water pump fails, allowing coolant to leak into the oil, which causes timing chain failure and potential engine destruction. I wish I knew this years ago...
NHTSA ODI #11731017
188,000 miles · Mar 5, 2026
EngineSuspension
The contact owns a 2013 Mazda CX-9. The contact stated that while driving at an undisclosed speed, the vehicle shuddered abnormally. The check engine warning light was illuminated. The vehicle was taken to a dealer, where it was diagnosed, and determined that the lower control arm needed to be replaced. The vehicle was repaired;…
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The contact owns a 2013 Mazda CX-9. The contact stated that while driving at an undisclosed speed, the vehicle shuddered abnormally. The check engine warning light was illuminated. The vehicle was taken to a dealer, where it was diagnosed, and determined that the lower control arm needed to be replaced. The vehicle was repaired; however, the contact had not received documentation of the repair. The manufacturer was notified of the failure and informed the contact that the vehicle was repaired under an undisclosed recall. The failure mileage was approximately 188,000.
NHTSA ODI #11722285
Mileage unknown · Mar 9, 2023
Engine
The engine in my Mazda blew with no warning. I got in my car after warming it up and noticed my check engine light on, which wasn’t unusual because it has came on before with a loose gas gap warning, so I put it in gear and drove less than 50 ft before it started making noises. I immediately turned around and came straight home …
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The engine in my Mazda blew with no warning. I got in my car after warming it up and noticed my check engine light on, which wasn’t unusual because it has came on before with a loose gas gap warning, so I put it in gear and drove less than 50 ft before it started making noises. I immediately turned around and came straight home and turned the car off. It started up and all but wouldn’t hold power. I got multiple opinions and no one could tell me why it my engine gave out with no warning. It was current with oil changes and all. I did purchase it used from Beardmore and didn’t have it for a full 2years.
NHTSA ODI #11511035
Mileage unknown · Jan 16, 2023
Engine
Water pump is cracked and leaking through weep hole, to no fault of the driver. The vehicle has over 214k miles on it and the mechanic informed us that this is common in this vehicle of this age with that many miles on it. Luckily we caught it before the leaky coolant mixed in with the engine oil and caused the engine to seize u…
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Water pump is cracked and leaking through weep hole, to no fault of the driver. The vehicle has over 214k miles on it and the mechanic informed us that this is common in this vehicle of this age with that many miles on it. Luckily we caught it before the leaky coolant mixed in with the engine oil and caused the engine to seize up, which after doing my research I'm realizing is a common issue with this make and model of vehicle. No mechanic in our town will fix it since the entire engine has to be taken out in order to get to the water pump. It's just too risky apparently. The only reason I'm reporting is because after doing my research I've found that water pumps breaking is a common issue with 2013 Mazda CX-9s.
NHTSA ODI #11502039
Mileage unknown · Jul 14, 2022
Engine
Car began shuddering/shaking and check engine light went on. Booked appointment at Mazda dealer. Upon inspection they found a significant amount of coolant had leaked into engine and timing was jumping. Was advised it should not be driven as the engine could freeze at any moment without warning. The technician provided a vid…
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Car began shuddering/shaking and check engine light went on. Booked appointment at Mazda dealer. Upon inspection they found a significant amount of coolant had leaked into engine and timing was jumping. Was advised it should not be driven as the engine could freeze at any moment without warning. The technician provided a video inspection of car showing large amount of coolant inside car's engine. An oil change had been performed less then 2 months earlier (5/19/2022) and no issues were noted.
NHTSA ODI #11473807
Mileage unknown · May 29, 2022
Engine
I was sitting in the car rider line and my engine started making this loud noise. I looked down at the temperature gage and it started over heating. I went to go pull it over and I noticed that the check engine light came on that's when I was turning in the parking place the engine stalled and i turned the car off. I took it to…
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I was sitting in the car rider line and my engine started making this loud noise. I looked down at the temperature gage and it started over heating. I went to go pull it over and I noticed that the check engine light came on that's when I was turning in the parking place the engine stalled and i turned the car off. I took it to a local shop and he told me that I need a new engine, because apparently whoever made the car decided it was a grand idea to put the water pump in with the engine. A engine cost about $4,000. Because the water pump is in with the engine it costs about the same as replacing the engine. Thank god I was driving down the main road whenever it happened because me and my daughter could have gotten hurt. Insurance won't pay for it. I don't know how I am going to pay for it.
NHTSA ODI #11466604
Mileage unknown · Feb 10, 2022
Engine
Headed out to the store and engine was running rough and CEL was on. Thought it was bad gas because I just put a few dollars in. Added gas treatment and topped off tank and continued to store. Stopped at Advanced Auto near the grocery store so they could pull the code. It was a P0016 - cam position sensor. If that was ba…
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Headed out to the store and engine was running rough and CEL was on. Thought it was bad gas because I just put a few dollars in. Added gas treatment and topped off tank and continued to store. Stopped at Advanced Auto near the grocery store so they could pull the code. It was a P0016 - cam position sensor. If that was bad it would explain rough idle. Leaving to come home engine was a bit rougher and realized there was no heat blowing. Only 4 miles from home so kept driving figuring thermostat was broke but was concerned 2 things bad at once. About a mile up the street complete loss of engine power, power everything was on. Had no power steering or brakes. Managed to coast into a parking lot. Shut off engine, and waited. Restarted engine, notice temp gauge starting to go higher - pulled back onto street but again lost power steering and brakes. Managed to pull into parking log of auto repair shop and left vehicle there. Contacted Mazda next day - they agreed it was mostly the water pump failure and could possible fix it. Arranged for tow later in the week. Mazda inspected and said they could not repair. Needs new engine $5000-6000.
NHTSA ODI #11451430
Mileage unknown · Jul 1, 2021
EngineUnknown Or Other
The water pump went out with no notice or warning, flushed all the coolant/water into the engine and failed. Over a $2K repair for a known engine defect with active lawsuits out. A Mazda water pump lawsuit alleges 2007-2016 Mazda CX-9 and 2009-2013 Mazda6 vehicles are equipped with pumps that suddenly fail and cause catastrophi…
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The water pump went out with no notice or warning, flushed all the coolant/water into the engine and failed. Over a $2K repair for a known engine defect with active lawsuits out. A Mazda water pump lawsuit alleges 2007-2016 Mazda CX-9 and 2009-2013 Mazda6 vehicles are equipped with pumps that suddenly fail and cause catastrophic engine failures. The proposed class action lawsuit alleges the vehicles lose engine power and fail to accelerate and maintain speed. The vehicles also allegedly can't readily control steering and cannot fully engage the brakes. The plaintiffs claim the vehicles are at risk of serious crashes because Mazda has failed to disclose the alleged water pump defects. Please investigate for a recall asap!
NHTSA ODI #11423136
Mileage unknown · Apr 22, 2021
EngineUnknown Or Other
WATER PUMP FAILED AND IMPACTED MY ENGINE AS WELL. I JUST BROUGHT MY CAR IN AS WELL 10/20/2020 NO MENTION OF THIS ISSUE. BEGINNING IN 2007 AND CONTINUING THROUGH THE 2016 MODEL YEAR, MAZDA HAS INCORPORATED ITS MZI CYCLONE ENGINE (THE 'CYCLONE ENGINE') INTO HUNDREDS OF THOUSANDS OF VEHICLES, WHICH INCLUDE THE CX-9 FOR MODEL YEA…
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WATER PUMP FAILED AND IMPACTED MY ENGINE AS WELL. I JUST BROUGHT MY CAR IN AS WELL 10/20/2020 NO MENTION OF THIS ISSUE. BEGINNING IN 2007 AND CONTINUING THROUGH THE 2016 MODEL YEAR, MAZDA HAS INCORPORATED ITS MZI CYCLONE ENGINE (THE 'CYCLONE ENGINE') INTO HUNDREDS OF THOUSANDS OF VEHICLES, WHICH INCLUDE THE CX-9 FOR MODEL YEARS 2007 THROUGH 2016 AND THE MAZDA 6 FOR MODEL YEARS 2009 THROUGH 2013. THE CYCLONE ENGINE CONTAINS AN INTERNAL CHAIN-DRIVEN WATER PUMP, WHICH MEANS THE TIMING CHAIN IS CONNECTED TO THE WATER PUMP AND PROVIDES THE POWER THE WATER PUMP NEEDS TO CIRCULATE COOLANT THROUGH THE ENGINE WHEN THE ENGINE IS RUNNING. THE CHAIN-DRIVEN WATER PUMP IS LOCATED INTERNAL TO THE CYCLONE ENGINE, BEHIND NUMEROUS ENGINE COMPONENTS, INCLUDING THE TIMING CHAIN COVER. UNBEKNOWNST TO PURCHASERS AND LESSEES OF THESE VEHICLES, THE CYCLONE ENGINE CONTAINS A DEFECT IN DESIGN, MANUFACTURING, MATERIALS AND/OR WORKMANSHIP THAT CAUSES THE WATER PUMP TO SUDDENLY AND PREMATURELY FAIL WELL-BEFORE THE END OF THE USEFUL LIFE OF THE ENGINE, WHICH LEADS TO CATASTROPHIC ENGINE FAILURE OR A COSTLY REPLACEMENT DUE TO THE WATER PUMP'S INACCESSIBLE PLACEMENT IN THE ENGINE. WHEN THE WATER PUMP PREMATURELY FAILS WITHOUT WARNING, COOLANT IS ABLE TO LEAK FROM THE WATER PUMP INTO THE OIL PAN AND/OR OTHER ENGINE COMPONENTS, ALLOWING IT TO MIX WITH THE ENGINE'S OIL. THE MIXTURE OF ENGINE OIL AND COOLANT CIRCULATES THROUGHOUT THE ENGINE, LEADING TO DESTRUCTION OF THE ENGINE. DESPITE HAVING KNOWLEDGE OF THIS DEFECT, MAZDA CONTINUED SELLING DEFECTIVE VEHICLES, FAILED TO DISCLOSE THE DEFECT TO OWNERS AND LESSEES, HAS NOT ISSUED A RECALL, AND HAS NOT REMEDIED THE ISSUE AND/OR COMPENSATED OWNERS AND LESSEES OF THE DEFECTIVE VEHICLES.
NHTSA ODI #11413454
88,000 miles · Mar 17, 2021
Engine
THE POWER STEERING AND POWER BREAKING SUDDENLY FAILED WHILE TRAVELING AT ABOUT 40MPH. THE CHECK ENGINE LIGHT HAD GONE ON A FEW MINUTES BEFORE THE CAR HAD THIS INCIDENT. WITH CONSIDERABLE FORCE ON THE BRAKE I WAS ABLE TO GET THE CAR TO THE SIDE OF THE ROAD. IT WAS TOWED TO A GARAGE WHERE THEY TOLD ME A 'WATER LINE HAD BROKE RE…
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THE POWER STEERING AND POWER BREAKING SUDDENLY FAILED WHILE TRAVELING AT ABOUT 40MPH. THE CHECK ENGINE LIGHT HAD GONE ON A FEW MINUTES BEFORE THE CAR HAD THIS INCIDENT. WITH CONSIDERABLE FORCE ON THE BRAKE I WAS ABLE TO GET THE CAR TO THE SIDE OF THE ROAD. IT WAS TOWED TO A GARAGE WHERE THEY TOLD ME A 'WATER LINE HAD BROKE RESULTING IN THE ENGINE BECOMING SUDDENLY FILLED WITH COOLANT'.
NHTSA ODI #11403483
Official recalls
4Oct 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.
Jan 9, 2018
Mazda North American Operations (Mazda) is recalling certain 2013 Mazda6 and 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 2010 Mazda6, CX-7 and CX-9 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 covered in Zone A or Zone B, Mazda is recalling certain 2009 Mazda6, CX-7, and 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 March 2, 2018. Owners may contact Mazda customer service at 1-800-222-5500. Mazda's number for this recall is 1317F.
Apr 11, 2016
Mazda North American Operations (Mazda) is recalling certain model year 2016 CX-3 vehicles manufactured June 1, 2015, to December 2, 2015, 2013-2014 Mazda2 vehicles manufactured July 3, 2013, to August 8, 2014, 2014-2016 CX-5 vehicles manufactured January 19, 2013, to December 2, 2015, and 2013-2015 CX-9 vehicles manufactured December 6, 2012, to July 31, 2015. The lower mounting nuts and bolts that attach the front strut assembly to the steering knuckle may loosen, allowing the steering knuckle to separate.
Consequence & remedy
Consequence: If the steering knuckle separates from the strut assembly, it can cause a loss of steering control, increasing the risk of a crash.
Remedy: Mazda will notify owners, and dealers will inspect the lower mounting nuts and bolts that secure the front strut assembly to the steering knuckle. If the bolts are loose, they will be replaced and then correctly tightened, free of charge. The recall is expected to begin May 20, 2016. Owners may contact Mazda customer service at 1-800-222-5500. Mazda's number for this recall is 9316D.
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
2PE19006 · 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