← New search

2016 Ford Mustang

Owner reports · Recalls · Investigations

More warning signs than most Mustang years

Owner complaints for the 2016 Ford Mustang are substantially higher than the model-year median of 81.

About this comparison →

When problems were reported

Mileage at the reported incident

204 reports with mileage · 171 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.

  • Engine. Review the 75 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 72 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Back Over Prevention. Review the 52 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 reports6 fire reports10 injury reports

Electrical System complaints

72 reports
Clear category filter
64,000 miles · Apr 10, 2021
Electrical SystemSeats

THE HEATED AND AIR CONDITIONED SEATS STOPPED WORKING ALTHOUGH THE DASH INDICATOR SHOWS THAT IT IS ON. A SEARCH OF THE INTERNET SHOWS THAT IT IS A VERY COMMON PROBLEM ON 2015-2016 MUSTANG MODELS. THE CONNECTOR UNDER THE PASSENGER SEAT SHOWS A SEVERELY BURNED CONNECTION AS INDICATED IN THE ATTACHED PHOTO. THIS APPEARS TO BE A VERY…

Read full complaint

THE HEATED AND AIR CONDITIONED SEATS STOPPED WORKING ALTHOUGH THE DASH INDICATOR SHOWS THAT IT IS ON. A SEARCH OF THE INTERNET SHOWS THAT IT IS A VERY COMMON PROBLEM ON 2015-2016 MUSTANG MODELS. THE CONNECTOR UNDER THE PASSENGER SEAT SHOWS A SEVERELY BURNED CONNECTION AS INDICATED IN THE ATTACHED PHOTO. THIS APPEARS TO BE A VERY SERIOUS AND POTENTIALLY DANGEROUS PROBLEM THAT NEEDS TO BE ADDRESSED VIA A RECALL.*DT

NHTSA ODI #11407441

80,000 miles · Mar 19, 2021
Electrical SystemSeats

HEATED AND COOLED SEATS STOPPED WORKING. I CHECKED SOME FORUMS AND FOUND OUT IT WAS A VERY COMMON PROBLEM. THIS PIN FOR THE GROUND ON THE WIRE ASSEMBLY THAT CONTROLS THE SEAT IS THE ONLY ONE, AND IT IS COMMON FOR IT TO COMPLETELY BURN OUT AS SEEN IN THE PICTURE. AS IT'S IN THE CABIN, UNDERNEATH THE PASSENGER SEAT, IT IS VERY DAN…

Read full complaint

HEATED AND COOLED SEATS STOPPED WORKING. I CHECKED SOME FORUMS AND FOUND OUT IT WAS A VERY COMMON PROBLEM. THIS PIN FOR THE GROUND ON THE WIRE ASSEMBLY THAT CONTROLS THE SEAT IS THE ONLY ONE, AND IT IS COMMON FOR IT TO COMPLETELY BURN OUT AS SEEN IN THE PICTURE. AS IT'S IN THE CABIN, UNDERNEATH THE PASSENGER SEAT, IT IS VERY DANGEROUS FOR IT TO BE BURNING THIS WAY.

NHTSA ODI #11403943

35,000 miles · Mar 7, 2021
Electrical System

HEATED COOLED SEATS ARE NOT WORKING. CHECKED THE CONNECTOR PAN UNDERNEATH THE SEAT AND THERE'S A BURNT AREA ON BOTH THE PIN AND ON THE MODULE

NHTSA ODI #11399609

35,000 miles · Mar 5, 2021
Electrical System

UPDATE INFORMATION THE PROBLEM IS THE BACKUP CAMERA. POOR DESIGN AND INSTALLATION WITH POSSIBLE SHORTNESS OF LENGTH OF WIRING CREATING TOO MUCH TENSION. ANY DEVICE SAFETY DEVICES NEEDS TO BE CORRECTED. THE OTHER PROBLEM LAST MARCH I HAD TO PAY IS THE THIRD BACKUP LIGHT BECAUSE OF POOR WIRING DESIGN.

NHTSA ODI #11399246

35,000 miles · Mar 5, 2021
Electrical System

L LAST MARCH 2020 I TOOK MY CAR IN FOR INSPECTION AT MY FORD DEALERSHIP (WYNNE FORD HAMPTON VA) AND INSPECTOR FAILED MY STATE INSPECTION BECAUSE OF THE BACKUP LIGHT NOT WORKING. THE ELECTRICAL WAS REPAIRED. NOW MY BACKUP CAMERA IS NOT WORKING. SAME PROBLEM WITH THE ELECTRICAL WIRING. OSHA STD HAS A QUALITY WORKMANSHIP. FORD…

Read full complaint

L LAST MARCH 2020 I TOOK MY CAR IN FOR INSPECTION AT MY FORD DEALERSHIP (WYNNE FORD HAMPTON VA) AND INSPECTOR FAILED MY STATE INSPECTION BECAUSE OF THE BACKUP LIGHT NOT WORKING. THE ELECTRICAL WAS REPAIRED. NOW MY BACKUP CAMERA IS NOT WORKING. SAME PROBLEM WITH THE ELECTRICAL WIRING. OSHA STD HAS A QUALITY WORKMANSHIP. FORD HAS MADE A POOR WORKMANSHIP FOR THESE SAFETY DEVICES. NEED A RECALL AT NO EXPENSE FOR CONSUMERS FOR THEIR POOR WORKMANSHIP RELATED TO SAFETY. TOO MANY INDIVIDUALS REPORTED WITH THE SAME ISSUES.

NHTSA ODI #11399244

31,000 miles · Mar 4, 2021
Electrical SystemUnknown Or Other

APPROXIMATELY 31,000 MILES BUT WARRANTY HAS EXPIRED DUE TO LAPSE OF TIME - HE A/C HAS FAILED DUE TO WHAT THE DEALERSHIP CALLED A KNOWN ISSUE; HOWEVER, EVEN THOUGH MILEAGE WOULD STILL BE UNDER WARRANTY BECAUSE THE CAR IS GREATER THAN 3 YEARS OLD THEY WILL NOT COVER THIS COSTLY REPAIR

NHTSA ODI #11399128

50,000 miles · Feb 15, 2021
Electrical System

BURNED ELECTRICAL CONNECTER CONTROLLING FRONT SEAT HEATING AND COOLING. THE FOLLOWING IS FROM THE REPAIR WORK ORDER: #1 91MBZS SEATS INTERNAL GUEST STATES HAVC FOR FRONT SEATS NOT GETTING COLD OR HOT BURN CONNECTOR GOING TO THE HVAC CONTROL UNIT UNDER THE FRONT PASSENGER SEAT. I STARTED OFF MY CHECKING POWER TO THE HVAC MO…

Read full complaint

BURNED ELECTRICAL CONNECTER CONTROLLING FRONT SEAT HEATING AND COOLING. THE FOLLOWING IS FROM THE REPAIR WORK ORDER: #1 91MBZS SEATS INTERNAL GUEST STATES HAVC FOR FRONT SEATS NOT GETTING COLD OR HOT BURN CONNECTOR GOING TO THE HVAC CONTROL UNIT UNDER THE FRONT PASSENGER SEAT. I STARTED OFF MY CHECKING POWER TO THE HVAC MODULE TO SEE IF THERE WAS A SHORT BEFORE THE CONTROL UNIT. I REMOVED THE SEAT AND HVAC MODULE TO CLEAN THE PINS ON IT THAT WERE AFFECTED BY THE CONNECTOR. AFTER THAT I REPLACED SEAT HARNESS THAT GOES TO THE HVAC CONTROL MODULE. I THEN PUT THE SEAT BACK IN AND CLEARED THE CODES. BOTH THE HEATED AND AIR CONDITIONED FUNCTION OF THE DRIVER AND PASSENGER SEAT WORK. QTY PART NUMBER DESCRIPTION UNIT TOTAL 1 MBEU5Z14A699C WIRE ASSY INTERNAL TOTAL PARTS: 0.00

NHTSA ODI #11396226

26,600 miles · Dec 8, 2020
Electrical SystemEngineUnknown Or Other

WHILE COMING TO A STOP WITH THE CLUTCH PRESSED IN THE CAR WILL RANDOMLY TURN OFF INTERMITTENTLY. THIS HAS NOW JUST BEGAN HAPPENING, ALTHOUGH IT HAS NOW HAPPENED TO ME TWICE IN 1 MONTHS TIME. I HAVE ALSO BEEN READING ON S550 MUSTANG FORUMS (YEARS 2015 - PRESENT) THAT I AM NOT THE ONLY ONE EXPERIENCING THIS. IT SEEMS LIKE AN ELECT…

Read full complaint

WHILE COMING TO A STOP WITH THE CLUTCH PRESSED IN THE CAR WILL RANDOMLY TURN OFF INTERMITTENTLY. THIS HAS NOW JUST BEGAN HAPPENING, ALTHOUGH IT HAS NOW HAPPENED TO ME TWICE IN 1 MONTHS TIME. I HAVE ALSO BEEN READING ON S550 MUSTANG FORUMS (YEARS 2015 - PRESENT) THAT I AM NOT THE ONLY ONE EXPERIENCING THIS. IT SEEMS LIKE AN ELECTRICAL ISSUE OR SOMETHING AS THERE ARE PEOPLE WITH COMPLETELY STOCK CARS THAT ARE AFFECTED BY THIS, AND ALSO PEOPLE WITH 2018+ NEWER MUSTANGS AS WELL.

NHTSA ODI #11378568

30,000 miles · Oct 12, 2020
Electrical SystemVisibility/wiper

REAR VIEW CAMERA FAILURE, WHEN ATTEMPTING TO REVERSE THE REAR VIEW CAMERA WILL GO BLANK, OR GET DISTORTED . BECAUSE OF THIS IT SEVERELY DIMINISHES REAR VISIBILITY.

NHTSA ODI #11363984

20,000 miles · Oct 1, 2020
Electrical System

I SEE THE NEWS ABOUT THE NEW RECALL OF REAR-VIEW CAMERAS GOING BLANK AND NOT SHOWING IMAGES. THE NEW RECALL IS ONLY FOR 2020 MODELS BUT MY 2016 MODEL HAS HAD THE SAME ISSUE FOR THE LAST YEAR AND 1/2. I ONLY HAVE 20K MILES ON MY MUSTANG. REAR VIEW CAMERA WORKS SOMETIMES BUT OTHER TIMES IS BLANK AND MESSAGE ON SCREEN SAYS CAN'T DI…

Read full complaint

I SEE THE NEWS ABOUT THE NEW RECALL OF REAR-VIEW CAMERAS GOING BLANK AND NOT SHOWING IMAGES. THE NEW RECALL IS ONLY FOR 2020 MODELS BUT MY 2016 MODEL HAS HAD THE SAME ISSUE FOR THE LAST YEAR AND 1/2. I ONLY HAVE 20K MILES ON MY MUSTANG. REAR VIEW CAMERA WORKS SOMETIMES BUT OTHER TIMES IS BLANK AND MESSAGE ON SCREEN SAYS CAN'T DISPLAY IMAGE. OCCURS WHEN IN REVERSED WHILE BACKING UP.

NHTSA ODI #11362266

Official recalls

5

25V614000 · Seat Belts:pretensioner

Sep 12, 2025

Ford Motor Company (Ford) is recalling certain 2015-2017 Mustang vehicles. Water and road salt may corrode the front seat belt anchor pretensioner cables.

Consequence & remedy

Consequence: A corroded cable can break, preventing the seat belt from properly restraining an occupant, and increasing the risk of injury during a crash.

Remedy: Dealers will inspect and replace both front seat belt anchor pretensioner assemblies, as necessary. In addition, dealers will remove sections of the carpet and underlayment that contact the cables. Dealers will also inspect the A-pillar sealing patches, and as necessary, install A-pillar body plugs, and/or inspect and replace the front outboard seat bolts. Repairs will be performed free of charge. Interim letters, notifying owners of the safety risk, were mailed October 20, 2025. Additional letters will be sent once the final remedy is available, anticipated December 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S92. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov September 17, 2025.

25V572000 · Back Over Prevention: Sensing System: Camera

Sep 3, 2025

Ford Motor Company (Ford) is recalling certain 2015-2019 Lincoln MKC, Mustang, F-350 SD, F-250 SD, F-450 SD, 2015-2017 Lincoln Navigator, Expedition, 2015-2018 Edge, Transit Connect, 2016-2019 F-550 SD, Transit, 2017-2019 Econoline, and 2019 Ranger vehicles. The rearview camera may display a distorted, inverted, or blank image when the vehicle is in reverse.

Consequence & remedy

Consequence: A rearview camera that displays an inverted, distorted, or blank image can reduce the driver’s view behind the vehicle, increasing the risk of a crash.

Remedy: Dealers will inspect and replace the rearview camera as necessary, free of charge. Owner notification letters were mailed January 13, 2026. Ford owners will receive letters in phases, beginning January 2026 and June 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S89. This recall expands previous NHTSA recall number 25V270. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning September 8, 2025.

22V082000 · Back Over Prevention: Sensing System: Camera

Feb 16, 2022

Ford Motor Company (Ford) is recalling certain 2015-2017 Mustang vehicles. The rearview camera wiring may be loose or damaged, which can result in a blank or distorted image.

Consequence & remedy

Consequence: A rearview camera that displays a blank or distorted image can reduce the driver's rear view, increasing the risk of a crash.

Remedy: Dealers will inspect and repair the decklid wiring harness and/or replace the rearview camera, as necessary, free of charge. Owner notification letters were mailed December 23, 2022 and June 26, 2023. Remedy parts are expected to become available in the 4th Quarter of 2022. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 22S06.

16V779000 · Engine And Engine Cooling:cooling System:hoses/lines/piping/fittings

Oct 26, 2016

Ford Motor Company (Ford) is recalling certain model year 2015-2017 Mustang vehicles manufactured February 24, 2015, to August 30, 2016. A hose may separate from the engine oil cooler tube assembly causing an oil leak.

Consequence & remedy

Consequence: A sudden loss of engine oil may cause engine failure, increasing the risk of a crash. Additionally, an oil leak, in the presence of an ignition source, increases the risk of a fire.

Remedy: Ford will notify owners, and dealers will replace the engine oil cooler tube assembly, free of charge. The recall began on March 23, 2017. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 16S40.

15V707000 · Child Seat:tether: Connector/clip; Seat Belts

Oct 26, 2015

Ford Motor Company (Ford) is recalling certain model year 2016 Ford Mustang vehicles manufactured September 26, 2015, to October 1, 2015. The front and rear seat belts and child seat tether anchors may have been damaged in shipping from the supplier to the vehicle assembly plant and may not adequately restrain the occupant in a crash. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard numbers 208, "Occupant Crash Protection," and 225, "Child restraint anchorage systems."

Consequence & remedy

Consequence: If the restraint components do not function as intended, the occupants may not be properly restrained in the event of a crash, increasing their risk of injury.

Remedy: Ford will notify owners, and dealers will replace the front and rear seat belt assemblies and the child seat tether anchors, free of charge. The recall began on December 18, 2015. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 15C13.

Additional source detail variants (2)

Child Seat:tether: Connector/clip

Ford Motor Company (Ford) is recalling certain model year 2016 Ford Mustang vehicles manufactured September 26, 2015, to October 1, 2015. The front and rear seat belts and child seat tether anchors may have been damaged in shipping from the supplier to the vehicle assembly plant and may not adequately restrain the occupant in a crash. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard numbers 208, "Occupant Crash Protection," and 225, "Child restraint anchorage systems."

Consequence: If the restraint components do not function as intended, the occupants may not be properly restrained in the event of a crash, increasing their risk of injury.

Remedy: Ford will notify owners, and dealers will replace the front and rear seat belt assemblies and the child seat tether anchors, free of charge. The recall began on December 18, 2015. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 15C13.

Seat Belts

Ford Motor Company (Ford) is recalling certain model year 2016 Ford Mustang vehicles manufactured September 26, 2015, to October 1, 2015. The front and rear seat belts and child seat tether anchors may have been damaged in shipping from the supplier to the vehicle assembly plant and may not adequately restrain the occupant in a crash. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard numbers 208, "Occupant Crash Protection," and 225, "Child restraint anchorage systems."

Consequence: If the restraint components do not function as intended, the occupants may not be properly restrained in the event of a crash, increasing their risk of injury.

Remedy: Ford will notify owners, and dealers will replace the front and rear seat belt assemblies and the child seat tether anchors, free of charge. The recall began on December 18, 2015. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 15C13.

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.