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2016 Dodge Challenger

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2016 Dodge Challenger do not stand out strongly from the model-year median of 45.

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How this year compares

Owner complaints by model year

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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

47 reports with mileage · 31 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 16 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 15 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 12 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

10 crash reports2 fire reports9 injury reports

Electrical System complaints

15 reports
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Mileage unknown · Aug 8, 2024
Electrical SystemPower TrainSteering

I had a recall fixed at dodge for PCM since then service power steering comes on and the steering wheel locks up sometimes I'm driving and it seizes up it started at 37000 miles And when my extended warranty was up 3yr manufacture 6 yr extended warranty but since we purchased it in the beginning the warranty overlapped not fair …

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I had a recall fixed at dodge for PCM since then service power steering comes on and the steering wheel locks up sometimes I'm driving and it seizes up it started at 37000 miles And when my extended warranty was up 3yr manufacture 6 yr extended warranty but since we purchased it in the beginning the warranty overlapped not fair since I should have had 9 yrs now I can't even drive my car more than 15minutes also it's very dangerous that I can be driving and all of a sudden can't turn the steering.

NHTSA ODI #11607381

Mileage unknown · Jan 31, 2024
Electrical SystemSeat BeltsVehicle Speed Control

Tipman module is melting and has a burning smell and black marks where there has been spark. Fire hazard. Draws too many amps from headlights. Drivers side seatbelt won't register and seatbelt airbag light is on.

NHTSA ODI #11568974

Mileage unknown · Dec 12, 2022
Electrical SystemForward Collision AvoidanceSteering

I was driving on the interstate and the ACC/FCW light came on.Then soon after The ABS light came on then the power steering system failed causing the steering wheel to lock while I was driving.I turned my car off in the emergency lane and restarted the car.All of them light when off but then the airbag warning light came on.

NHTSA ODI #11497133

Mileage unknown · Jul 8, 2022
Electrical System

My backup camera doesn’t work at all

NHTSA ODI #11472956

Mileage unknown · May 2, 2022
Electrical System

Uconnect advised me via email that once the 3G bandwidth was no longer functional, that Uconnect would be upgrading to 4G. The list of functions that would be lost would mostly be cellular functions as well as the Assist and 9-1-1 button functions located on the inside rear view mirror. Most of the cellular phone functional loss…

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Uconnect advised me via email that once the 3G bandwidth was no longer functional, that Uconnect would be upgrading to 4G. The list of functions that would be lost would mostly be cellular functions as well as the Assist and 9-1-1 button functions located on the inside rear view mirror. Most of the cellular phone functional loss was partially resolved with a dongle from T-Mobile/Sprint. However, it does not resolve functional loss of the Assist and 9-1-1 buttons on the inside rear view mirror. I believe this to be significant safety concern. I called Uconnect and was told that "we're sorry, but you'll have to use your cell phone in case of an emergency." My experience (law enforcement, EMS, and as an injured driver) dictates that the access and use of a cell phone is not always feasible depending on the structural/electrical damage of the vehicle and/or injuries. Stellantis and Uconnect initially told me that this was not repairable, but I was also told from another Uconnect employee that a recommendation was made to Stellantis, who apparently refused the upgrade/update, but offered no other information. Stellantis will not answer their phones (Not programmed to take messages and hangs up), executive management refuses to reply to email and letters, and my support through a Customer Care Executive Manager was very limited (our communication via email was terminated). I also received a phone call from Stellantis (department not disclosed in this message) a few months later, which I believe to be a method of intimidation.

NHTSA ODI #11463115

Mileage unknown · Feb 26, 2022
Electrical System

The wiring to the headlights are getting hot and visibly showing burn Mark's to the wiring and fuses to the headlights (not halo lights). It is causing the headlights to come on intermittently. Sometimes they come on at night and sometimes they don't. Sometimes they are off and suddenly comes on after miles of driving with my…

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The wiring to the headlights are getting hot and visibly showing burn Mark's to the wiring and fuses to the headlights (not halo lights). It is causing the headlights to come on intermittently. Sometimes they come on at night and sometimes they don't. Sometimes they are off and suddenly comes on after miles of driving with my flashers. I can spell the burning sometimes. The Dodge dealership in Douglasville Georgia verified the wire and fuse burning. The dealership technicians spoke of relocating the wires to empty fuse box slots. How will that prevent the wires from burning? This could be a fire hazard. Your assistance is appreciated.

NHTSA ODI #11454258

39,000 miles · Apr 26, 2020
Electrical SystemExterior Lighting

MY HEADLIGHTS INTERMITTENTLY WENT OUT. SOMETIMES ONE SIDE, SOMETIMES BOTH. IT HAPPENED LAST NIGHT WHILE I WAS DRIVING. BOTH HEADLIGHTS WENT OUT. LUCKILY I WAS RIGHT DOWN THE STREET FROM MY HOUSE. PULLED IN THE GARAGE TO FIND THAT BOTH HEADLIGHT FUSES (FUSE 15 AND FUSE16) WERE BURNT. UPON FURTHER RESEARCH ON FORUMS AND WEBSITES D…

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MY HEADLIGHTS INTERMITTENTLY WENT OUT. SOMETIMES ONE SIDE, SOMETIMES BOTH. IT HAPPENED LAST NIGHT WHILE I WAS DRIVING. BOTH HEADLIGHTS WENT OUT. LUCKILY I WAS RIGHT DOWN THE STREET FROM MY HOUSE. PULLED IN THE GARAGE TO FIND THAT BOTH HEADLIGHT FUSES (FUSE 15 AND FUSE16) WERE BURNT. UPON FURTHER RESEARCH ON FORUMS AND WEBSITES DEDICATED TO MY CAR, MANY OTHER PEOPLE ARE ALSO HAVING ISSUES WITH THIS. THIS HAS HAPPENED TO MULTIPLE TIMES. LUCKILY THIS TIME I WAS NOT ON A BUSY STREET, BUT I WAS ON A STATE ROUTE A MINUTE PRIOR TO THIS. BOTH MY LOWBEAMS AND HIGH BEAMS WERE AFFECTED.

NHTSA ODI #11322266

Mileage unknown · Mar 26, 2020
Electrical SystemExterior Lighting

BOUGHT THE CAR FROM A DEALERSHIP NOT EVEN A MONTH AGO THEY WERE VERY AWARE THAT THE HEADLIGHTS DID NOT SEEM TO WORK ON THE CAR AFTER SEVERAL WEEKS OF ASKING THEM TO GET IN TOUCH WITH THEIR MECHANIC OR SAYING MAYBE TOMOROW OR NEXT WEEK GOT NO ANSWER CAR CURRENTLY IS UNABLE TO DRIVE AT NIGHT OR EARLY MORNING WHICH IS MY WORK HOURS…

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BOUGHT THE CAR FROM A DEALERSHIP NOT EVEN A MONTH AGO THEY WERE VERY AWARE THAT THE HEADLIGHTS DID NOT SEEM TO WORK ON THE CAR AFTER SEVERAL WEEKS OF ASKING THEM TO GET IN TOUCH WITH THEIR MECHANIC OR SAYING MAYBE TOMOROW OR NEXT WEEK GOT NO ANSWER CAR CURRENTLY IS UNABLE TO DRIVE AT NIGHT OR EARLY MORNING WHICH IS MY WORK HOURS HAVE RECENTLY HAD TO DRIVE WITH HAZARD LIGHTS ON AT DARK HOURS BULBS OR NOT HE CULPRIT NOR RELAYS OR FUSE HAS A MAJOR ELECTRICAL PROBLEM AND LIGHT PROBLEM ALSO CAR SEEMS TO BE STUCK ON THE HEADLIGHTS ON POSITION NOT ALLOWING ME TO TURN OFF LICENSE PLATE LIGHT AND OR SIDE MARKERS ALONG WITH DASH CLUSTER BEING SO DIM WHERE I'M UNABLE TO SEE DURING THE DAY TIME AND ALSO STEERING WHEEL IS OFF CENTERED WHEN DRIVING STRAIGHT

NHTSA ODI #11319388

Mileage unknown · Oct 14, 2019
Electrical System

UCONNECT WILL NOT ADD TO DEVICES, CAN'T ADD PHONES TO CAR FOR HANDS FREE DRIVING. SOFTWARE DEFECT. MY CAR IS 3YEARS OLD. THERE'S NO WAY THIS SHOULD BE HAPPENING. I NEED SATISFACTION PLEASE.

NHTSA ODI #11268388

27,200 miles · May 13, 2019
Electrical System

WHEN SHUTTING THE TRUNK WITH THE KEY FOB IN MY POCKET THE LOCKING ACTUATOR WILL ENGAGE AND UNLOCK THE TRUNK. THIS HAPPENS SEVERAL TIMES BEFORE IT WILL STAY LOCKED. ALSO WHEN THIS HAPPENS 2 OTHER ISSUES PRESENT. WHEN LOCKING THE DOOR USING THE LOCK BUTTON ON THE DOOR PANEL AND CLOSING THE DOOR WHILE STANDING OUTSIDE OF THE VEHICL…

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WHEN SHUTTING THE TRUNK WITH THE KEY FOB IN MY POCKET THE LOCKING ACTUATOR WILL ENGAGE AND UNLOCK THE TRUNK. THIS HAPPENS SEVERAL TIMES BEFORE IT WILL STAY LOCKED. ALSO WHEN THIS HAPPENS 2 OTHER ISSUES PRESENT. WHEN LOCKING THE DOOR USING THE LOCK BUTTON ON THE DOOR PANEL AND CLOSING THE DOOR WHILE STANDING OUTSIDE OF THE VEHICLE WITH THE FOB IN MY POCKET. THE DOOR WILL UNLOCK ITS SELF, THE HORN WILL BEEP AND THE LIGHTS WILL FLASH THIS ISSUE WILL HAPPEN SEVERAL TIMES BEFORE IT STOPS, OR I WILL USE THE KEY FOB TO LOCK THE DOOR. ALSO AFTER THESE 2 ISSUES PRESENT, WHEN STARTING THE CAR WITH THE KEY FOB IN MY POCKET THE DISPLAY ON THE DASH WILL READ KEY FOB NOT IN VEHICLE AND THE CAR WILL GIVE THE AUDIBLE TONE AS IF THE KEY WAS NOT IN THE CAR. ALL ISSUES PRESENTED WHILE THE CAR WAS PARKED AND WILL NOT REPLICATE EVERYDAY. THESE ISSUES HAPPENED A FEW WEEKS AGO AND I CALLED CARSON CITY DODGE IN NEVADA. APPOINTMENT WAS MADE AND I LEFT THE CAR WITH THEM FOR A FULL WEEK. I WAS NOTIFIED BY THE SERVICE ADVISOR THAT THE ISSUES WOULD NOT DUPLICATE. THE CAR WAS RETURNED TO ME ON 5/10/219. I WAS TOLD IF THE HAPPEN AGAIN TO CALL. I WILL BE DOING THAT TODAY 5/13/19. THESE ISSUES STARTED ON OR ABOUT 5/1/19.

NHTSA ODI #11207154

Official recalls

1

18V332000 · Electrical System:software; Electrical System:wiring; Vehicle Speed Control:cruise Control

May 17, 2018

Chrysler (FCA US LLC) is recalling certain 2014-2018 Dodge Journey, Charger and Durango, RAM 2500, 3500, 3500 Cab Chassis (more than 10,000lb), 4500 Cab Chassis and 5500 Cab Chassis, Jeep Cherokee and Grand Cherokee and Chrysler 300, 2014-2019 RAM 1500, 2015-2018 Dodge Challenger, 2015-2017 Chrysler 200, 2016-2018 RAM 3500 Cab Chassis (less than 10,000 lb), 2017-2018 Chrysler Pacifica and 2018 Jeep Wrangler vehicles. These vehicles are being recalled to address a defect that could prevent the cruise control system from disengaging. If, when using cruise control, there is a short circuit within the vehicle's wiring, the driver may not be able to shut off the cruise control either by depressing the brake pedal or manually turning the system off once it has been engaged, resulting in either the vehicle maintaining its current speed or possibly accelerating.

Consequence & remedy

Consequence: If the vehicle maintains its speed or accelerates despite attempts to deactivate the cruise control, there would be an increased risk of a crash.

Remedy: Chrysler will notify owners, and dealers will inspect the software, and perform a software flash on the engine or powertrain control module, free of charge. The recall began June 4, 2018. Owners may contact Chrysler customer service at 1-800-853-1403. Note: Owners are advised to stop using cruise control until the software update has been performed. In the event that cruise control cannot be disengaged while driving, owners should firmly and steadily apply the brakes and shift the transmission to neutral, placing the vehicle in park once it has stopped.

Additional source detail variants (3)

Electrical System:software

Chrysler (FCA US LLC) is recalling certain 2014-2018 Dodge Journey, Charger and Durango, RAM 2500, 3500, 3500 Cab Chassis (more than 10,000lb), 4500 Cab Chassis and 5500 Cab Chassis, Jeep Cherokee and Grand Cherokee and Chrysler 300, 2014-2019 RAM 1500, 2015-2018 Dodge Challenger, 2015-2017 Chrysler 200, 2016-2018 RAM 3500 Cab Chassis (less than 10,000 lb), 2017-2018 Chrysler Pacifica and 2018 Jeep Wrangler vehicles. These vehicles are being recalled to address a defect that could prevent the cruise control system from disengaging. If, when using cruise control, there is a short circuit within the vehicle's wiring, the driver may not be able to shut off the cruise control either by depressing the brake pedal or manually turning the system off once it has been engaged, resulting in either the vehicle maintaining its current speed or possibly accelerating.

Consequence: If the vehicle maintains its speed or accelerates despite attempts to deactivate the cruise control, there would be an increased risk of a crash.

Remedy: Chrysler will notify owners, and dealers will inspect the software, and perform a software flash on the engine or powertrain control module, free of charge. The recall began June 4, 2018. Owners may contact Chrysler customer service at 1-800-853-1403. Note: Owners are advised to stop using cruise control until the software update has been performed. In the event that cruise control cannot be disengaged while driving, owners should firmly and steadily apply the brakes and shift the transmission to neutral, placing the vehicle in park once it has stopped.

Vehicle Speed Control:cruise Control

Chrysler (FCA US LLC) is recalling certain 2014-2018 Dodge Journey, Charger and Durango, RAM 2500, 3500, 3500 Cab Chassis (more than 10,000lb), 4500 Cab Chassis and 5500 Cab Chassis, Jeep Cherokee and Grand Cherokee and Chrysler 300, 2014-2019 RAM 1500, 2015-2018 Dodge Challenger, 2015-2017 Chrysler 200, 2016-2018 RAM 3500 Cab Chassis (less than 10,000 lb), 2017-2018 Chrysler Pacifica and 2018 Jeep Wrangler vehicles. These vehicles are being recalled to address a defect that could prevent the cruise control system from disengaging. If, when using cruise control, there is a short circuit within the vehicle's wiring, the driver may not be able to shut off the cruise control either by depressing the brake pedal or manually turning the system off once it has been engaged, resulting in either the vehicle maintaining its current speed or possibly accelerating.

Consequence: If the vehicle maintains its speed or accelerates despite attempts to deactivate the cruise control, there would be an increased risk of a crash.

Remedy: Chrysler will notify owners, and dealers will inspect the software, and perform a software flash on the engine or powertrain control module, free of charge. The recall began June 4, 2018. Owners may contact Chrysler customer service at 1-800-853-1403. Note: Owners are advised to stop using cruise control until the software update has been performed. In the event that cruise control cannot be disengaged while driving, owners should firmly and steadily apply the brakes and shift the transmission to neutral, placing the vehicle in park once it has stopped.

Electrical System:wiring

Chrysler (FCA US LLC) is recalling certain 2014-2018 Dodge Journey, Charger and Durango, RAM 2500, 3500, 3500 Cab Chassis (more than 10,000lb), 4500 Cab Chassis and 5500 Cab Chassis, Jeep Cherokee and Grand Cherokee and Chrysler 300, 2014-2019 RAM 1500, 2015-2018 Dodge Challenger, 2015-2017 Chrysler 200, 2016-2018 RAM 3500 Cab Chassis (less than 10,000 lb), 2017-2018 Chrysler Pacifica and 2018 Jeep Wrangler vehicles. These vehicles are being recalled to address a defect that could prevent the cruise control system from disengaging. If, when using cruise control, there is a short circuit within the vehicle's wiring, the driver may not be able to shut off the cruise control either by depressing the brake pedal or manually turning the system off once it has been engaged, resulting in either the vehicle maintaining its current speed or possibly accelerating.

Consequence: If the vehicle maintains its speed or accelerates despite attempts to deactivate the cruise control, there would be an increased risk of a crash.

Remedy: Chrysler will notify owners, and dealers will inspect the software, and perform a software flash on the engine or powertrain control module, free of charge. The recall began June 4, 2018. Owners may contact Chrysler customer service at 1-800-853-1403. Note: Owners are advised to stop using cruise control until the software update has been performed. In the event that cruise control cannot be disengaged while driving, owners should firmly and steadily apply the brakes and shift the transmission to neutral, placing the vehicle in park once it has stopped.

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.