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2014 MERCEDES-BENZ C250

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2014 MERCEDES-BENZ C250 do not stand out strongly from the model-year median of 163.

About this comparison →

When problems were reported

Mileage at the reported incident

66 reports with mileage · 97 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.

  • Air Bags. Review the 93 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 22 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Steering. Review the 18 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

13 crash reports4 fire reports9 injury reports

What owners actually said

163 reports
15 miles · Jun 12, 2018
Structure

I WAS DRIVING ON THE FREEWAY AT AROUND 9AM CST HEADED TO DFW AIRPORT WHEN ALL OF A SUDDEN I JUST HEARD A LOUD BANG. I IMMEDIATELY FELT PRESSURE IN MY EARS AND IT NOW FELT LIKE THERE WAS A WINDOW OPEN. HAVING PULLED OUT TO A SAFE SPOT ON THE SIDE OF THE FREEWAY TO INSPECT THE VEHICLE, I WAS SHOCKED TO SEE THE SUNROOF GLASS IS WH…

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I WAS DRIVING ON THE FREEWAY AT AROUND 9AM CST HEADED TO DFW AIRPORT WHEN ALL OF A SUDDEN I JUST HEARD A LOUD BANG. I IMMEDIATELY FELT PRESSURE IN MY EARS AND IT NOW FELT LIKE THERE WAS A WINDOW OPEN. HAVING PULLED OUT TO A SAFE SPOT ON THE SIDE OF THE FREEWAY TO INSPECT THE VEHICLE, I WAS SHOCKED TO SEE THE SUNROOF GLASS IS WHAT HAD EXPLODED.

NHTSA ODI #11101470

Mileage unknown · Jun 11, 2018
Air Bags

TL* THE CONTACT OWNS A 2014 MERCEDES-BENZ C250. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V627000 (AIR BAGS); HOWEVER, THE PARTS TO DO THE REPAIR WERE UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE DEALER (RBM OF ATLANTA INC., 7640 ROSWELL…

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TL* THE CONTACT OWNS A 2014 MERCEDES-BENZ C250. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V627000 (AIR BAGS); HOWEVER, THE PARTS TO DO THE REPAIR WERE UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE DEALER (RBM OF ATLANTA INC., 7640 ROSWELL RD, ATLANTA, GA 30350, 770-390-0700) WAS CONTACTED AND CONFIRMED THAT THE PARTS WERE NOT AVAILABLE FOR THE RECALL REMEDY. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.

NHTSA ODI #11101136

Mileage unknown · Jun 8, 2018
Air Bags

HI, WE WERE LIVING IN THE USA AND RECENTLY MOVED TO CANADA AND IMPORTED OUR CAR AS WELL. THIS IS WHEN WE REALIZED THAT THERE IS AN ACTIVE RECALL ON OUR CAR. BECAUSE OF THIS RECALL WE ARE NOT ABLE TO COMPLETE THE INSPECTION AND REGISTER OUR CAR IN CANADA. WE HAVE BEEN FOLLOWING UP WITH MERCEDES USA FOR MORE THAN 6 MONTHS NOW AND…

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HI, WE WERE LIVING IN THE USA AND RECENTLY MOVED TO CANADA AND IMPORTED OUR CAR AS WELL. THIS IS WHEN WE REALIZED THAT THERE IS AN ACTIVE RECALL ON OUR CAR. BECAUSE OF THIS RECALL WE ARE NOT ABLE TO COMPLETE THE INSPECTION AND REGISTER OUR CAR IN CANADA. WE HAVE BEEN FOLLOWING UP WITH MERCEDES USA FOR MORE THAN 6 MONTHS NOW AND NO UPDATE ON THIS. KINDLY HELP US IN THIS REGARD.

NHTSA ODI #11100602

Mileage unknown · Jun 7, 2018
Air Bags

TL* THE CONTACT OWNS A 2014 MERCEDES-BENZ C250. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V627000 (AIR BAGS); HOWEVER, THE PART NEEDED FOR THE REPAIR WAS NOT AVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE CONTACT CALLED MERCEDES-BENZ OF SAN …

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TL* THE CONTACT OWNS A 2014 MERCEDES-BENZ C250. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V627000 (AIR BAGS); HOWEVER, THE PART NEEDED FOR THE REPAIR WAS NOT AVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE CONTACT CALLED MERCEDES-BENZ OF SAN DIEGO AT (858) 569-6900 (LOCATED AT 4750 KEARNY MESA RD, SAN DIEGO, CA 92111) AND WAS INFORMED THAT THE PART WAS NOT AVAILABLE. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.

NHTSA ODI #11100449

58,000 miles · Jun 6, 2018
Unknown Or Other

THE DRIVER'S SIDE INTERIOR DOOR HANDLE IS DEFECTIVE AND BROKEN. MBUSA REFUSES TO HONOR EXTENDED WARRANTY TO REPLACE DEFECTIVE PARTS.

NHTSA ODI #11100173

55,000 miles · May 31, 2018
Air BagsUnknown Or OtherCrashInjury

I WAS IN A HEAD ON COLLISION AND THE AIRWAY DID NOT DEPLOY

NHTSA ODI #11098916

60,000 miles · May 25, 2018
Air BagsSteering

MY STEERING WHEEL STARTED TO CLICK WHEN I TURNED IT, DIDN'T THINK ANYTHING OF IT. I WAS RECENTLY PULLING INTO A PARKING SPOT AND MY STEERING WHEEL MADE A LOUD POP AND GOT STUCK, THEN A LOUD CRACK AGAIN AND STARTED TO WORK. IT STILL CLICKS AND NOW MY PASSENGER AIRBAG LIGHT IS ON PERMANENTLY. I WENT TO THE DEALERSHIP IN OXNARD AND…

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MY STEERING WHEEL STARTED TO CLICK WHEN I TURNED IT, DIDN'T THINK ANYTHING OF IT. I WAS RECENTLY PULLING INTO A PARKING SPOT AND MY STEERING WHEEL MADE A LOUD POP AND GOT STUCK, THEN A LOUD CRACK AGAIN AND STARTED TO WORK. IT STILL CLICKS AND NOW MY PASSENGER AIRBAG LIGHT IS ON PERMANENTLY. I WENT TO THE DEALERSHIP IN OXNARD AND THEY SAID IT WOULD BE 175 TO CHECK ABOUT THE AIRBAGS EVEN THOUGH THERE IS A RECALL. THEY ALSO SAID THEY DON'T HAVE THE PARTS NEEDED TO MY STEERING WHEEL. I DO NOT FEEL SAFE AT ALL DRIVING THIS CAR. THE HORN DOESN'T WORK AND NEITHER DO ANY OF THE BUTTONS ON MY STEERING WHEEL.

NHTSA ODI #11098013

50,000 miles · May 25, 2018
Air BagsExterior Lighting

TL* THE CONTACT OWNS A 2014 MERCEDES-BENZ C250. THE CONTACT STATED THAT THE SRS INDICATOR ILLUMINATED, WHICH WAS A SAFETY CONCERN. THE VEHICLE WAS NOT TAKEN TO A DEALER FOR DIAGNOSTIC TESTING OR REPAIRS. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 50,000.

NHTSA ODI #11098008

52,000 miles · May 25, 2018
Air BagsCrashInjury

TL* THE CONTACT OWNS A 2014 MERCEDES-BENZ C250. WHILE DRIVING 60 MPH, THE CONTACT REAR ENDED THE PRECEDING VEHICLE. THE AIR BAGS FAILED TO DEPLOY AND CAUSED THE CONTACT TO SUSTAIN RIB INJURIES AND A BROKEN TOE, WHICH REQUIRED MEDICAL ATTENTION. THE CONTACT WAS UNAWARE OF THE INJURIES TO THE OTHER DRIVER. A POLICE REPORT WAS FILE…

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TL* THE CONTACT OWNS A 2014 MERCEDES-BENZ C250. WHILE DRIVING 60 MPH, THE CONTACT REAR ENDED THE PRECEDING VEHICLE. THE AIR BAGS FAILED TO DEPLOY AND CAUSED THE CONTACT TO SUSTAIN RIB INJURIES AND A BROKEN TOE, WHICH REQUIRED MEDICAL ATTENTION. THE CONTACT WAS UNAWARE OF THE INJURIES TO THE OTHER DRIVER. A POLICE REPORT WAS FILED. THE VEHICLE WAS TOWED TO AN INDEPENDENT AUTO COLLISION CENTER. THE DEALER WAS NOT CONTACTED TO DETERMINE THE CAUSE OF THE AIR BAG FAILURE. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 52,000.

NHTSA ODI #11098002

50,200 miles · May 24, 2018
EngineUnknown Or OtherFire

TL* THE CONTACT OWNED A 2014 MERCEDES-BENZ C250. WHILE DRIVING 60 MPH, THE VEHICLE CAUGHT ON FIRE WITHOUT WARNING. THE CONTACT STATED THAT THE FAILURE OCCURRED WHEN RETRIEVING THE VEHICLE FROM THE DEALER AND THAT THE VEHICLE HAD BEEN AT THE DEALER FOR THREE MONTHS. THE POLICE DEPARTMENT WAS CALLED, BUT A POLICE REPORT WAS NOT FI…

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TL* THE CONTACT OWNED A 2014 MERCEDES-BENZ C250. WHILE DRIVING 60 MPH, THE VEHICLE CAUGHT ON FIRE WITHOUT WARNING. THE CONTACT STATED THAT THE FAILURE OCCURRED WHEN RETRIEVING THE VEHICLE FROM THE DEALER AND THAT THE VEHICLE HAD BEEN AT THE DEALER FOR THREE MONTHS. THE POLICE DEPARTMENT WAS CALLED, BUT A POLICE REPORT WAS NOT FILED. NO INJURIES WERE SUSTAINED. THE FIRE DEPARTMENT WAS ABLE TO EXTINGUISH THE FIRE. THE VEHICLE WAS TOWED TO MERCEDES BENZ OF PALM BEACH (4000 OKEECHOBEE BLVD, WEST PALM BEACH, FL 33409). THE MANUFACTURER INSPECTED THE VEHICLE AND STATED THAT THEY WERE NOT LIABLE FOR THE FAILURE. THE VEHICLE HAD NOT BEEN REPAIRED. THE FAILURE MILEAGE WAS 50,200.

NHTSA ODI #11097813

Official recalls

5

21V638000 · Air Bags:frontal

Aug 13, 2021

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2015-2016 E400 Coupe, 2012-2015 C250 Coupe, C350 Coupe, C63 AMG Coupe, 2011-2014 E350 Coupe, and 2012-2014 E350 Cabrio vehicles. An incorrect front passenger air bag may have been installed during a prior repair.

Consequence & remedy

Consequence: An incorrect air bag may not function properly in a crash, increasing the risk of injury.

Remedy: Dealers will replace the front passenger air bag on the affected vehicles, free of charge. Owner notification letters were mailed on September 10, 2021. Owners may contact MBUSA customer service at 1-800-367-6372.

19V787000 · Communication

Nov 1, 2019

Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2013-2017 vehicles due to a software fault that may cause the date and time for the emergency call system (eCall) to differ from the actual date and time, potentially relaying an inaccurate vehicle location. For a full list of the affected models visit: https://static.nhtsa.gov/odi/rcl/2019/RMISC-19V787-4620.pdf

Consequence & remedy

Consequence: An inaccurate vehicle location may delay emergency responders, increasing the risk of injury.

Remedy: MBUSA has initiated an Over the Air (OTA) remote update. MBUSA will also notify owners, and dealers will check software for a successful OTA or update the communication module software as needed, free of charge. The recall began December 23, 2019. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2019120008.

19V010000 · Air Bags:frontal:passenger Side:inflator Module

Jan 9, 2019

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2014 C250, C300 4Matic, C350, C63 AMG, E350 4Matic Coupe, E350 Cabrio, E350 Coupe, SLS AMG Cabrio, SLS AMG Coupe, 2014-2015 C250 Coupe, C350 4Matic Coupe, C350 Coupe, C63 AMG Coupe, GLK 350, GLK250 BlueTec 4Matic, GLK350 RWD, 2015-2017 E400 4Matic Coupe, E400 Cabrio, E400 Coupe, 2014-2017 E550 Cabrio, and 2014-2016 E550 Coupe vehicles sold, or ever registered, in the states of AL, CA, FL, GA, HI, LA, MS, SC, TX, PR, AS, GU, the MP, and VI or "Zone A." Additionally, MBUSA is recalling certain 2012-2014 C250, E350 4Matic Coupe, SLS AMG Cabrio, 2012-2015 C250 Coupe, C350 4Matic Coupe, C350 Coupe, C63 AMG Coupe, 2011 C300, 2011-2014 C300 4Matic, C350, C63 AMG, E350 Cabrio, E350 Coupe, SLS AMG Coupe, 2015-2016 E400 4Matic Coupe, E400 Cabrio, E400 Coupe, 2011-2016 E550 Cabrio, E550 Coupe, 2011-2015 GLK350 4Matic, GLK350 RWD, and 2013-2015 GLK250 BlueTec 4Matic vehicles ever registered in the states of AZ, AR, DE, DC, IL, IN, KS, KY, MD, MO, NE, NV, NJ, NM, NC, OH, OK, PA, TN, VA, and WV or "Zone B." MBUSA is also recalling certain 2012-2014 C250, E350 4Matic Coupe, SLS AMG Cabrio 2012-2015 C250 Coupe, C350 4Matic Coupe, C350 Coupe, C63 AMG Coupe, 2010-2011 C300, 2010-2014 C300 4Matic, C350, C63 AMG, E350 Coupe, 2011-2014 E350 Cabrio, SLS AMG Coupe, 2015-2016 E400 4Matic Coupe, E400 Cabrio, E400 Coupe, 2016-2017 E550 Cabrio, 2010-2016 E550 Coupe, 2010-2015 GLK350 4Matic, GLK350 RWD, and 2013-2015 GLK250 BlueTec 4Matic vehicles ever registered in the states of AK, CO, CT, ID, IA, ME, MA, MI, MN, MO, NH, NY, ND, OR, RI, SD, UT, VT, WA, WI and WY or "Zone C." These vehicles are equipped with air bag inflators assembled as part of the passenger frontal air bag modules that 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 passenger or other occupants resulting in serious injury or death.

Remedy: MBUSA will notify owners, and dealers will replace the passenger frontal air bag module, free of charge. The recall began March 29, 2019. Owners may contact MBUSA customer service at 1-800-367-6372.

17V627000 · Air Bags:frontal

Oct 6, 2017

Mercedes-Benz USA, LLC. (MBUSA) is recalling these vehicles: 2014-2018 CLA250, CLA250 4Matic, CLA45 AMG 4Matic, 2015-2018 GLA250, GLA250 4Matic, GLA45 AMG 4Matic, C300 4Matic, C63S AMG, 2012-2014 C250, C350, C300 4Matic, E550 4Matic, 2013-2014 C63 AMG, 2012-2015 C250 Coupe, C350 Coupe, C63 AMG Coupe, 2013-2015 C350 4Matic Coupe, GLK250 4Matic BlueTec, GLK350, GLK350 4Matic, 2016-2017 C350e, C43 AMG, 2015 C400 4Matic, 2016-2018 C63 AMG, GLC300, GLC300 4Matic, 2017-2018 C300 Coupe, C300 4Matic Coupe, C43 AMG, C63 AMG Coupe, C63S AMG Coupe, C300 Cabriolet, C300 4Matic Cabriolet, C43 AMG Cabriolet, C63 AMG Cabriolet, C63S AMG Cabriolet, GLC300 4Matic Coupe, GLC43 AMG, GLC43 AMG Coupe, 2014 E350 Coupe, E350 4Matic Coupe, E350 Cabriolet, E400 Hybrid, 2015-2017 E400 Coupe, E400 4Matic Coupe, E400 Cabriolet, 2014-2017 E550 Coupe, E550 Cabriolet, B250e, 2014-2016 E250 BlueTec, E63 AMG 4Matic Wagon, 2012-2013 E350 BlueTec, 2012-2016 E350, E350 4Matic, 2015-2016 E400, E400 4Matic, 2012 E63 AMG, 2014-2015 E250 4Matic BlueTec, 2013-2016 E350 Wagon, 2017 GLC300d 4Matic, and 2018 GLC350e 4Matic. The driver's air bag may unexpectedly deploy due to insufficient grounding of the steering components if an electrostatic discharge occurs and the air bag clockspring is broken.

Consequence & remedy

Consequence: If the driver air bag inadvertently deploys, it can increase the risk of injury and a crash.

Remedy: MBUSA will notify owners, and dealers will add sufficient grounding to the steering components, free of charge. The recall began in December 6, 2017. Owners may contact MBUSA customer service at 1-877-496-3691.

17V252000 · Steering

Apr 12, 2017

Mercedes-Benz USA LLC. (MBUSA) is recalling certain 2013-2014 C250, C300 4MATIC, GLK250 4MATIC BLUETEC and GLK350 vehicles, 2013 C250 Coupe, C350, C350 4MATIC Coupe, C350 Coupe and C63 AMG Coupe vehicles, and 2013-2015 GLK350 4MATIC vehicles. The steering coupling connecting bolt may have been insufficiently tightened, possibly resulting in a loss of steering.

Consequence & remedy

Consequence: A loss of steering can increase the risk of a crash.

Remedy: MBUSA will notify owners, and dealers will inspect the steering coupling connecting bolt, tightening it as necessary, free of charge. The recall began May 2017. Owners may contact MBUSA customer service at 1-800-367-6372.

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

1

EA21002 · 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.