MY M3 WITH M-DCT TRANSMISSION HAS SIGNIFICANT THROTTLE DELAY IN LOWER GEARS AT ROLLING SPEEDS. CAR WOULD NOT RESPOND TO THROTTLE INPUT FOR ONE SECOND OR MORE AND THEN SUDDENLY SURGE FORWARD. THIS IS A SIGNIFICANT SAFETY ISSUE AS THE CAR FAILS TO ACCELERATE WHEN NEEDED. *TR
2008 BMW M3
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all M3 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
65 reports with mileage · 17 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.
- Power Train. Review the 37 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine. Review the 20 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Air Bags. Review the 9 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
82 reports2008 M3 DCT LAG PROBLEM. AT LOWER SPEEDS THE GEARBOX TAKES TO MUCH TIME TO SELECT A GEAR (LIKE COMING THROUGH A SLOW CORNER) AND THEN AFTER THE LAG AND IT "CATCHES" AGAIN THERE IS USUALLY A JERKY ACCELERATION. THIS IS NOT NORMAL FOR A TRANSMISSION TO DRIVE THIS WAY. HAPPENS MORE IN "D" MODE BUT ALSO IN REGULAR MODE ESPECIALLY IN…
Read full complaint
2008 M3 DCT LAG PROBLEM. AT LOWER SPEEDS THE GEARBOX TAKES TO MUCH TIME TO SELECT A GEAR (LIKE COMING THROUGH A SLOW CORNER) AND THEN AFTER THE LAG AND IT "CATCHES" AGAIN THERE IS USUALLY A JERKY ACCELERATION. THIS IS NOT NORMAL FOR A TRANSMISSION TO DRIVE THIS WAY. HAPPENS MORE IN "D" MODE BUT ALSO IN REGULAR MODE ESPECIALLY IN 2ND GEAR. *TR
I HAVE THE DCT TRANSMISSION WITH MY 2008 BMW M3 AND THE LAG IS VERY UNSAFE. DEALER SAYING NO FIX AND PROBLEM NOT UNSAFE. *TR
I HAVE A 2008 BMW M3 WITH THE DCT TRANSMISSION. EVER SINCE BMW INSTALLED A SOFTWARE UPDATE TO FIX A SIMILAR NHTSA ISSUE WITH THE TRANSMISSION, MY CAR SUFFERS FROM A SUDDEN POWER LOSS WHEN I SLOW DOWN TO APPROXIMATELY 10MPH, AND THEN TRY TO ACCELERATE AGAIN. THIS LEADS TO A VERY DANGEROUS SITUATION WHILE THE CAR DOES NOT MOVE AND…
Read full complaint
I HAVE A 2008 BMW M3 WITH THE DCT TRANSMISSION. EVER SINCE BMW INSTALLED A SOFTWARE UPDATE TO FIX A SIMILAR NHTSA ISSUE WITH THE TRANSMISSION, MY CAR SUFFERS FROM A SUDDEN POWER LOSS WHEN I SLOW DOWN TO APPROXIMATELY 10MPH, AND THEN TRY TO ACCELERATE AGAIN. THIS LEADS TO A VERY DANGEROUS SITUATION WHILE THE CAR DOES NOT MOVE AND TRAFFIC AROUND ME CONTINUES TO MOVE. *TR
WHILE DECELERATING IN 2ND OR 1ST GEAR UNDER LIGHT BRAKING THEN ATTEMPTING TO ACCELERATE THE VEHICLE EXPERIENCES A LOSS OF POWER FOR TWO TO THREE SECONDS. MY FIRST EXPERIENCE WITH THIS HAPPENED MAKING A LEFT TURN ACROSS OPPOSING TRAFFIC LANE. HAD ONCOMING TRAFFIC BEEN CLOSER WHEN THE VEHICLE DID NOT ACCELERATE I WOULD HAVE BEEN …
Read full complaint
WHILE DECELERATING IN 2ND OR 1ST GEAR UNDER LIGHT BRAKING THEN ATTEMPTING TO ACCELERATE THE VEHICLE EXPERIENCES A LOSS OF POWER FOR TWO TO THREE SECONDS. MY FIRST EXPERIENCE WITH THIS HAPPENED MAKING A LEFT TURN ACROSS OPPOSING TRAFFIC LANE. HAD ONCOMING TRAFFIC BEEN CLOSER WHEN THE VEHICLE DID NOT ACCELERATE I WOULD HAVE BEEN HIT MID SIDE OF THE VEHICLE. BMW REPORTS THAT THIS IS NORMAL BEHAVIOR OF THIS TRANSMISSION HOWEVER I FEEL IT IS A MAJOR SAFETY ISSUE. *TR
M3 WITH DCT AUTOMATED MANUAL TRANSMISSION WILL NOT SHIFT WHEN AT LOWER SPEEDS GOING AROUND CORNERS. THERE IS A LONG DELAY BEFORE IT SHIFTS SO ITS DANGEROUS WHEN MERGING OUT INTO TRAFFIC. THE CAR HAS PERFORMED THIS WAY SINCE PURCHASED AND MULTIPLE SOFTWARE REPROGRAMMING HAS NOT REMEDIED. WHEN TURNING THE REAR DIFFERENTIAL MA…
Read full complaint
M3 WITH DCT AUTOMATED MANUAL TRANSMISSION WILL NOT SHIFT WHEN AT LOWER SPEEDS GOING AROUND CORNERS. THERE IS A LONG DELAY BEFORE IT SHIFTS SO ITS DANGEROUS WHEN MERGING OUT INTO TRAFFIC. THE CAR HAS PERFORMED THIS WAY SINCE PURCHASED AND MULTIPLE SOFTWARE REPROGRAMMING HAS NOT REMEDIED. WHEN TURNING THE REAR DIFFERENTIAL MAKES A GRINDING NOISE. IT STARTED AT ABOUT 1200 MILES AND CONTINUES AT 5000 MILES. THE DEALER PUT FLUID IN TO REMEDY AND SAID TO WAIT 300-500 MILES FOR IT TO GO AWAY. THAT WAS OVER 1500 MILES AGO................. *TR
ISSUE WITH THROTTLE NOT RESPONDING WITH THE DCT TRANSMISSION CAR (2008 BMW M3). THIS IS A SOFTWARE PROBLEM THAT RENDERS THE CAR UNRESPONSIVE TO THROTTLE INPUT AND THEREFORE INCREASING THE RISK OF AN ACCIDENT. *TR
THE CAR HAS A DANGEROUS THROTTLE LAG AT SLOW SPEEDS. WHEN TRYING TO MERGE ONTO FASTER TRAFFIC, IT CAUSES A DANGEROUS SITUATION WHERE THE CAR DOES NOT ACCELERATE FOR UP TO 2 SECONDS. ALMOST GOT REAR ENDED A COUPLE TIMES. THE CAR IS EQUIPPED WITH THE DCT TRANSMISSION, I HAVE RECENTLY GOTTEN A RECENT SOFTWARE UPDATE WHICH IS CAUSIN…
Read full complaint
THE CAR HAS A DANGEROUS THROTTLE LAG AT SLOW SPEEDS. WHEN TRYING TO MERGE ONTO FASTER TRAFFIC, IT CAUSES A DANGEROUS SITUATION WHERE THE CAR DOES NOT ACCELERATE FOR UP TO 2 SECONDS. ALMOST GOT REAR ENDED A COUPLE TIMES. THE CAR IS EQUIPPED WITH THE DCT TRANSMISSION, I HAVE RECENTLY GOTTEN A RECENT SOFTWARE UPDATE WHICH IS CAUSING THE PROBLEM TO OCCUR. BMW CURRENTLY IS NOT OFFERING A SOLUTION AND CALLING THE PROBLEM NORMAL. *TR
MY CAR IS EQUIPPED WITH THE "DCT" TRANSMISSION. AT LOWER SPEEDS, THERE IS A DELAY OF 1+ SECONDS IN THROTTLE RESPONSE IN "D MODE" (SIMILAR TO AN AUTOMATIC MODE). THIS HAS LEFT ME IN LIFE THREATENING SITUATIONS SEVERAL TIMES IN INTERSECTIONS WITH NO THROTTLE RESPONSE AND ONCOMING CARS. I FEEL I CANNOT TRUST THE VEHICLE TO MOVE …
Read full complaint
MY CAR IS EQUIPPED WITH THE "DCT" TRANSMISSION. AT LOWER SPEEDS, THERE IS A DELAY OF 1+ SECONDS IN THROTTLE RESPONSE IN "D MODE" (SIMILAR TO AN AUTOMATIC MODE). THIS HAS LEFT ME IN LIFE THREATENING SITUATIONS SEVERAL TIMES IN INTERSECTIONS WITH NO THROTTLE RESPONSE AND ONCOMING CARS. I FEEL I CANNOT TRUST THE VEHICLE TO MOVE WHEN I NEED IT TO. SOMEBODY IS GOING TO BE INJURED OR KILLED DUE TO THIS ISSUE. I WAS NEARLY STRUCK ON TWO SEPARATE OCCASIONS. I HAVE HAD THE CAR IN TO THE DEALER REPEATEDLY FOR THIS ISSUE AND AM ONLY REFERRED TO BMW SI B 28 07 08 AS AN EXPLANATION, WHICH IS TOTALLY UNACCEPTABLE! *TR
I HAVE A 08 BMW M3 WITH DCT TRANSMISSION. IT RECEIVED A SOFTWARE UPDATE MONTHS AGO TO FIX A TRANSMISSION SHIFTING PATTERN. IT DID SOLVE THAT ISSUE BUT IT CREATED A MUCH WORSE ONE. THE CAR NOW, WHEN DECELERATING FROM NORMAL SPEEDS AND REACHES A SPEED WHERE IT SHOULD BE ENGAGING INTO 2ND GEAR, IT DOES NOT FOR ABOUT 1-2 SECONDS. TH…
Read full complaint
I HAVE A 08 BMW M3 WITH DCT TRANSMISSION. IT RECEIVED A SOFTWARE UPDATE MONTHS AGO TO FIX A TRANSMISSION SHIFTING PATTERN. IT DID SOLVE THAT ISSUE BUT IT CREATED A MUCH WORSE ONE. THE CAR NOW, WHEN DECELERATING FROM NORMAL SPEEDS AND REACHES A SPEED WHERE IT SHOULD BE ENGAGING INTO 2ND GEAR, IT DOES NOT FOR ABOUT 1-2 SECONDS. THIS HAPPENS EVERY TIME. THE CLASSIC EXAMPLE IS WHEN I SLOW DOWN AT AN INTERSECTION, COME OUT OF STREET AND MERGE INTO TRAFFIC, TRY TO MAKE A U-TURN, TURN INTO A BUSINESS ETC. THIS CREATES A SCENARIO THAT IF YOU ARE AT A BUSY ROAD AND LETS SAY DOING 45 MPH AND YOU SLOW DOWN TO MAKE A LEFT TURN TO A SLOW SPEED THAT YOU CAR SHOULD ENGAGE 2 OR 3RD GEAR AND IT SITS THERE FOR A SECOND OR TWO AND IT SEEMS TO BE "LOOKING" FOR A GEAR TO CHOOSE AND IT SIMPLY DOES NOT RESPOND. TO TRY TO COMPENSATE, THE NATURAL REACTION IS TO STEP ON THE GAS A BIT MORE TO MAKE IT THROUGH THE INTERSECTION. THE CAR THEN, WHEN IT DECIDES TO ENGAGE 2ND GEAR, LURCHES FORWARDS IN A VERY ABRUPT MANNER. THIS CREATES A VERY DANGEROUS SCENARIO SINCE THAT PAUSE IS A GREAT DEAL OF DISTANCE TRAVELED BY THE CAR BEHIND YOU AND IT KEEPS GOING. THE LAG IN THE TRANSMISSION CREATES DRASTIC VOID IN POWER AND THERE YOU SIT LIKE A FISH IN A BARREL HOPING A CAR OR AN 18-WHEELER DOES NOT HIT YOU FROM BEHIND. I HAVE HAD 3 VERY CLOSE TIMES MAKING A U-TURN IN A BUSY STREET THAT MY CAR WAS EXTREMELY CLOSE TO BEING REAR ENDED WITH A CHILD IN THE BACK SEAT! ONCE IT CREATED ROAD RAGE WITH THE DRIVER OF THE TRUCK THAT ALMOST HIT ME AND THE OTHER PERSON ENDED UP IN THE MEDIAN AS TO NOT HIT ME. BMW HAS CHOSEN TO BE NON-COMMUNICATIVE WITH ITS CUSTOMERS AND EVEN STATING THAT THIS IS NORMAL FOR A DCT TRANSMISSION WHICH IS NOT. THIS DID NOT EXIST BEFORE THE LAST SOFTWARE UPDATE 31.2. IT IS VERY CONCERNING THAT BMW HAS TAKING THIS STANCE. I 'M AN AVID AUTO ENTHUSIAST & AN ER DOC AND TRUST ME THIS IS VERY DANGEROUS AND SOMEONE WILL BE KILLED IN AN ACCIDENT IF THEY DO NOT FIX THIS SOON PLEASE HELP! *TR
Official recalls
520V017000 · Air Bags:frontal:driver Side:inflator Module
Jan 15, 2020
BMW of North America, LLC (BMW) is recalling certain 2008-2013 128i and 135i Convertibles, 128i, 135i, and M Coupes, 2007-2010 X3 30si and X3 xDrive30i, 2013-2015 X1 sDrive28i, X1 xDrive28i and X1 xDrive35i, 2007-2013 328i, 328i xDrive, 335i, 335is, 335i xDrive and M3 Coupes, 2006-2011 328i, 328xi, 328i xDrive, 325i, 325xi, 330i, 330xi, 335i, 335xi, 335i xDrive and M3, 2009-2011 335D, 2006-2012 325xi, 328i, 328xi and 328i xDrive, 2010-2011 X6 ActiveHybrid, 2007-2013 328i, 335i, 335is, M3 Coupes, X5 30si, X5 xDrive30i, X5 xDrive35i, X5 48i, X5 xDrive48i, X5 xDrive50i and X5 M, 2009-2013 X5 xDrive35d and 2008-2014 X6 xDrive35i, X6 xDrive50i and X6M vehicles equipped with non-desiccated driver frontal air bag inflators containing phase stabilized ammonium nitrate (PSAN) that were used as interim remedy parts for previous Takata recalls. These inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, high temperatures, and high 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: BMW will notify owners, and dealers will replace the driver air bag. On X5 and X6 vehicles, only the inflator will be replaced. All repairs will be performed free of charge. The recall began March 11, 2020. Owners may contact BMW customer service at 1-800-525-7417.
19V472000 · Electrical System; Electrical SYSTEM:12V/24V/48V Battery:cables; Electrical System:wiring:fuses And Circuit Breakers
Jun 19, 2019
BMW of North America, LLC (BMW) is recalling certain 2009 328i and 328xi, 2009-2011 335d, 2008-2012 M3 Coupe and M3 Convertible, and 2008-2011 M3 Sedan vehicles. The connection of the positive battery cable at the fuse box terminal may degrade, resulting in an intermittent loss of electrical power.
Consequence & remedy
Consequence: A loss of electrical power can cause the vehicle to stall, increasing the risk of a crash.
Remedy: BMW will notify owners, and dealers will replace and secure the positive battery cable connector, free of charge. The recall began August 14, 2019. Owners may contact BMW customer service at 1-800-525-7417. Note: This recall is an expansion of a previous recall, number 18V-314.
Additional source detail variants (3)
Electrical System:wiring:fuses And Circuit Breakers
BMW of North America, LLC (BMW) is recalling certain 2009 328i and 328xi, 2009-2011 335d, 2008-2012 M3 Coupe and M3 Convertible, and 2008-2011 M3 Sedan vehicles. The connection of the positive battery cable at the fuse box terminal may degrade, resulting in an intermittent loss of electrical power.
Consequence: A loss of electrical power can cause the vehicle to stall, increasing the risk of a crash.
Remedy: BMW will notify owners, and dealers will replace and secure the positive battery cable connector, free of charge. The recall began August 14, 2019. Owners may contact BMW customer service at 1-800-525-7417. Note: This recall is an expansion of a previous recall, number 18V-314.
Electrical SYSTEM:12V/24V/48V Battery:cables
BMW of North America, LLC (BMW) is recalling certain 2009 328i and 328xi, 2009-2011 335d, 2008-2012 M3 Coupe and M3 Convertible, and 2008-2011 M3 Sedan vehicles. The connection of the positive battery cable at the fuse box terminal may degrade, resulting in an intermittent loss of electrical power.
Consequence: A loss of electrical power can cause the vehicle to stall, increasing the risk of a crash.
Remedy: BMW will notify owners, and dealers will replace and secure the positive battery cable connector, free of charge. The recall began August 14, 2019. Owners may contact BMW customer service at 1-800-525-7417. Note: This recall is an expansion of a previous recall, number 18V-314.
Electrical System
BMW of North America, LLC (BMW) is recalling certain 2009 328i and 328xi, 2009-2011 335d, 2008-2012 M3 Coupe and M3 Convertible, and 2008-2011 M3 Sedan vehicles. The connection of the positive battery cable at the fuse box terminal may degrade, resulting in an intermittent loss of electrical power.
Consequence: A loss of electrical power can cause the vehicle to stall, increasing the risk of a crash.
Remedy: BMW will notify owners, and dealers will replace and secure the positive battery cable connector, free of charge. The recall began August 14, 2019. Owners may contact BMW customer service at 1-800-525-7417. Note: This recall is an expansion of a previous recall, number 18V-314.
17V676000 · Electrical System:wiring
Oct 25, 2017
BMW of North America, LLC (BMW) is recalling certain 2006-2011 323i, 325i, 325xi, 328i, 328xi, 330i, 330xi, 335i, 335xi and M3, 2007-2011 328i xDrive, 335i xDrive and 335is and 2009-2011 335d vehicles. The wiring and electrical connectors for the system that controls air flow for the heating and air conditioning system may overheat.
Consequence & remedy
Consequence: Wiring that overheats could cause the electrical connectors to melt, and increase the risk of a fire, even when the vehicle is unattended.
Remedy: BMW will notify owners, and dealers will replace the wiring and electrical connectors, free of charge. Interim letters were mailed on November 27, 2017. Owners will receive a second notice when the remedy becomes available. Owners may contact BMW customer service at 1-800-525-7417.
16V071000 · Air Bags:frontal:driver Side:inflator Module
Feb 5, 2016
BMW of North America, LLC (BMW) is recalling certain model year 2008-2013 128i and 135i coupes and convertibles and 1 Series M coupes, 2006-2011 325i, 325xi, 328i, 328xi, 328i xDrive, 330i, 330xi, 335i, 335xi, 335i xDrive Sedans, 2009-2011 335d sedans, 2006-2012 325xiT, 328i and 328xi sports wagons, 2007-2013 328i, 328xi, 328i xDrive, 335i, 335xi, 335i xDrive, 335is and M3 Coupes and Convertibles, 2013-2015 X1 sDrive28i, X1 xDrive28i and X1 xDrive35i SAVs, 2007-2010 X3 xDrive30i SAVs, 2007-2013 X5 xDrive30i, X5 xDrive35i, X5 xDrive48i, X5 xDrive50i and X5 M SAVs, 2009-2013 BMW X5 xDrive35d SAVs, 2008-2014 X6 xDrive35i, X6 xDrive50i, and X6 M SACs, 2010-2011 BMW X6 xDrive50i SACs and 2008-2011 M3 Sedan vehicles. Upon deployment of the driver's frontal air bag, excessive internal pressure may cause the inflator to rupture.
Consequence & remedy
Consequence: In the event of a crash necessitating deployment of the driver's frontal air bag, the inflator could rupture with metal fragments striking the driver or other occupants resulting in serious injury or death.
Remedy: BMW will notify owners, and dealers will replace the driver's frontal air bag module or inflator depending on the vehicle model, free of charge. The recall began March 9, 2018. Owners may contact BMW customer service at 1-800-525-7417.
08V595000 · Power Train:clutch Assembly
Nov 14, 2008
BMW IS RECALLING 2,500 MY 2008-2009 M3 PASSENGER VEHICLES WITH AN OPTIONAL DOUBLE CLUTCH TRANSMISSION. THE PROBLEM INVOLVES THE DOUBLE CLUTCH GEARBOX. IN A SITUATION OF RAPID VEHICLE DECELERATION, THE TRANSMISSION SOFTWARE MAY PERFORM A MULTISTAGE DOWNSHIFT.
Consequence & remedy
Consequence: IN THAT SITUATION, AT LOW VEHICLE SPEEDS, IT IS POSSIBLE FOR THE ENGINE TO STALL INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL REPROGRAM THE ENGINE AND TRANSMISSION ELECTRONIC CONTROL UNIT WITH UPDATED SOFTWARE FREE OF CHARGE. THE RECALL BEGAN ON DECEMBER 3, 2008. OWNERS MAY CONTACT BMW AT 1-800-831-1117.
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
1EA21002 · Desiccated Air Bag Inflator Rupture
Opened Sep 17, 2021 · No close date supplied
Status: open (inferred from source dates) · Air Bags:frontal:driver Side:inflator Module; Air Bags:frontal:passenger Side:inflator Module
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited. The rapid burning can cause the inflator to rupture during deployment, potentially causing serious or even fatal injury to vehicle occupants. See 2016 Blomquist Report at www.nhtsa.gov/sites/nhtsa.gov/files/documents/expert_report-hrblomquist.pdf.Consequently, all frontal inflators using propellant 2004 that do not contain a "desiccant" (a substance that traps and holds moisture) in US vehicles are under recall. These "non-desiccated" inflators either have been or are required to be replaced.In some cases, the remedy part for these recalled inflators was, or will be, an inflator using either propellant 2004 or 2004L that does contain a desiccant. None of these "desiccated" remedy parts (which were installed in older model year vehicles) are currently under recall for a degradation concern. Certain subsets of desiccated PSAN inflators using propellant 2004 for use as original equipment, however, have been recalled for a degradation concern. All Takata inflators produced with propellant 2004L contain desiccant, and none of these desiccated inflators using propellant 2004L are under recall for a degradation concern. There have been no reported field ruptures in any non-recalled desiccated PSAN inflators.It is understood that desiccants fully saturate at some threshold, at which point any additional moisture will not be captured. This means the degradation process observed in non-desiccated inflators using propellant 2004 may also occur in non-recalled desiccated inflators using propellant 2004, assuming additional moisture enters the inflator and high temperature cycling occurs. Based on available information, desiccant saturation can occur within the first five years in the worst environments, and the time required for full saturation is affected by multiple factors. While no present safety risk has been identified, further work is needed to evaluate the future risk of non-recalled desiccated inflators using propellant 2004.Three entities -- Takata (now known as TK Global), the Independent Testing Coalition, and Exponent -- have been studying the long-term behavior of Takata desiccated PSAN inflators using propellant 2004L (as well as 2004) in the presence of moisture and temperature cycling. The research efforts, which include development of predictive modeling techniques and field sample analysis, are ongoing. To date, none of the researchers have identified field evidence showing that propellant 2004L is undergoing a degradation process that leads to aggressive deployment and potential rupture. However, the time in service of such inflators remains short compared to that of the inflators using propellant 2004. Further study is needed to assess the long-term safety of desiccated inflators using propellant 2004L.The Office of Defects Investigation is opening this investigation to examine whether a safety defect related to propellant degradation exists in non-recalled desiccated PSAN frontal inflators manufactured by Takata. This investigation will require extensive information on Takata production processes and surveys of inflators in the field. Lists of recall actions that may have used desiccated PSAN inflators as remedy parts, as well as the makes and models originally manufactured with them, is available with the downloadable version of this document (see nhtsa.gov/recalls?nhtsaId=EA21002 -- note this information is subject to change/revision as the investigation proceeds). This investigation does not supersede EA15-001, which remains open.
Additional source detail variants (2)
Air Bags:frontal:driver Side:inflator Module
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited. The rapid burning can cause the inflator to rupture during deployment, potentially causing serious or even fatal injury to vehicle occupants. See 2016 Blomquist Report at www.nhtsa.gov/sites/nhtsa.gov/files/documents/expert_report-hrblomquist.pdf.Consequently, all frontal inflators using propellant 2004 that do not contain a "desiccant" (a substance that traps and holds moisture) in US vehicles are under recall. These "non-desiccated" inflators either have been or are required to be replaced.In some cases, the remedy part for these recalled inflators was, or will be, an inflator using either propellant 2004 or 2004L that does contain a desiccant. None of these "desiccated" remedy parts (which were installed in older model year vehicles) are currently under recall for a degradation concern. Certain subsets of desiccated PSAN inflators using propellant 2004 for use as original equipment, however, have been recalled for a degradation concern. All Takata inflators produced with propellant 2004L contain desiccant, and none of these desiccated inflators using propellant 2004L are under recall for a degradation concern. There have been no reported field ruptures in any non-recalled desiccated PSAN inflators.It is understood that desiccants fully saturate at some threshold, at which point any additional moisture will not be captured. This means the degradation process observed in non-desiccated inflators using propellant 2004 may also occur in non-recalled desiccated inflators using propellant 2004, assuming additional moisture enters the inflator and high temperature cycling occurs. Based on available information, desiccant saturation can occur within the first five years in the worst environments, and the time required for full saturation is affected by multiple factors. While no present safety risk has been identified, further work is needed to evaluate the future risk of non-recalled desiccated inflators using propellant 2004.Three entities -- Takata (now known as TK Global), the Independent Testing Coalition, and Exponent -- have been studying the long-term behavior of Takata desiccated PSAN inflators using propellant 2004L (as well as 2004) in the presence of moisture and temperature cycling. The research efforts, which include development of predictive modeling techniques and field sample analysis, are ongoing. To date, none of the researchers have identified field evidence showing that propellant 2004L is undergoing a degradation process that leads to aggressive deployment and potential rupture. However, the time in service of such inflators remains short compared to that of the inflators using propellant 2004. Further study is needed to assess the long-term safety of desiccated inflators using propellant 2004L.The Office of Defects Investigation is opening this investigation to examine whether a safety defect related to propellant degradation exists in non-recalled desiccated PSAN frontal inflators manufactured by Takata. This investigation will require extensive information on Takata production processes and surveys of inflators in the field. Lists of recall actions that may have used desiccated PSAN inflators as remedy parts, as well as the makes and models originally manufactured with them, is available with the downloadable version of this document (see nhtsa.gov/recalls?nhtsaId=EA21002 -- note this information is subject to change/revision as the investigation proceeds). This investigation does not supersede EA15-001, which remains open.
Air Bags:frontal:passenger Side:inflator Module
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited. The rapid burning can cause the inflator to rupture during deployment, potentially causing serious or even fatal injury to vehicle occupants. See 2016 Blomquist Report at www.nhtsa.gov/sites/nhtsa.gov/files/documents/expert_report-hrblomquist.pdf.Consequently, all frontal inflators using propellant 2004 that do not contain a "desiccant" (a substance that traps and holds moisture) in US vehicles are under recall. These "non-desiccated" inflators either have been or are required to be replaced.In some cases, the remedy part for these recalled inflators was, or will be, an inflator using either propellant 2004 or 2004L that does contain a desiccant. None of these "desiccated" remedy parts (which were installed in older model year vehicles) are currently under recall for a degradation concern. Certain subsets of desiccated PSAN inflators using propellant 2004 for use as original equipment, however, have been recalled for a degradation concern. All Takata inflators produced with propellant 2004L contain desiccant, and none of these desiccated inflators using propellant 2004L are under recall for a degradation concern. There have been no reported field ruptures in any non-recalled desiccated PSAN inflators.It is understood that desiccants fully saturate at some threshold, at which point any additional moisture will not be captured. This means the degradation process observed in non-desiccated inflators using propellant 2004 may also occur in non-recalled desiccated inflators using propellant 2004, assuming additional moisture enters the inflator and high temperature cycling occurs. Based on available information, desiccant saturation can occur within the first five years in the worst environments, and the time required for full saturation is affected by multiple factors. While no present safety risk has been identified, further work is needed to evaluate the future risk of non-recalled desiccated inflators using propellant 2004.Three entities -- Takata (now known as TK Global), the Independent Testing Coalition, and Exponent -- have been studying the long-term behavior of Takata desiccated PSAN inflators using propellant 2004L (as well as 2004) in the presence of moisture and temperature cycling. The research efforts, which include development of predictive modeling techniques and field sample analysis, are ongoing. To date, none of the researchers have identified field evidence showing that propellant 2004L is undergoing a degradation process that leads to aggressive deployment and potential rupture. However, the time in service of such inflators remains short compared to that of the inflators using propellant 2004. Further study is needed to assess the long-term safety of desiccated inflators using propellant 2004L.The Office of Defects Investigation is opening this investigation to examine whether a safety defect related to propellant degradation exists in non-recalled desiccated PSAN frontal inflators manufactured by Takata. This investigation will require extensive information on Takata production processes and surveys of inflators in the field. Lists of recall actions that may have used desiccated PSAN inflators as remedy parts, as well as the makes and models originally manufactured with them, is available with the downloadable version of this document (see nhtsa.gov/recalls?nhtsaId=EA21002 -- note this information is subject to change/revision as the investigation proceeds). This investigation does not supersede EA15-001, which remains open.
Illustration