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2016 BMW 528I

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2016 BMW 528I do not stand out strongly from the model-year median of 46.

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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

20 reports with mileage · 39 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.

  • Electrical System. Review the 33 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine And Engine Cooling. Review the 26 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 17 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

1 crash reports4 fire reports2 injury reports

What owners actually said

59 reports
Mileage unknown · Dec 21, 2023
Engine

2016 BMW 528i with 65,000 miles. Oil leaking from pan and told by mechanic that premature failed oil pan gasket and warping of oil pan well known by the manufacturer but they refuse to address the problem leaving the repair bill for customers. Poor design should not be the purchaser's responsibility.

NHTSA ODI #11561401

Mileage unknown · Nov 8, 2023
Engine

Bmw had recalled the n20 engine for timing chain guides replacement up to year 2015. The original timing chain guides were orange in color but also found to an inferior part from manufacturer. Bmw had replaced the original guides to a white color as supposed to a better product. Now then my 2016 model 528xi not only has the ori…

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Bmw had recalled the n20 engine for timing chain guides replacement up to year 2015. The original timing chain guides were orange in color but also found to an inferior part from manufacturer. Bmw had replaced the original guides to a white color as supposed to a better product. Now then my 2016 model 528xi not only has the original orange color chain guides or let's say inferior part from manufacturer because my manufacturer date my car is 08/2015..

NHTSA ODI #11554223

88,000 miles · Sep 15, 2023
Engine

The contact owns a 2016 BMW 528I. The contact stated that when he started the vehicle, he heard an unusual rattling sound. The vehicle was taken to the dealer to be diagnosed. The vehicle was diagnosed with a stretched timing chain guide. The contact was informed that the timing chain needed to be replaced. The vehicle remained …

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The contact owns a 2016 BMW 528I. The contact stated that when he started the vehicle, he heard an unusual rattling sound. The vehicle was taken to the dealer to be diagnosed. The vehicle was diagnosed with a stretched timing chain guide. The contact was informed that the timing chain needed to be replaced. The vehicle remained at the dealer unrepaired. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 88,000.

NHTSA ODI #11544725

Mileage unknown · Jun 3, 2023
Air Bags

*drivers' restraint system t * There is a big possibility that airbags won't deploy when I need them to. *Confirmed by dealership *Yes vehicle has been inspected by BMW dealership. * There was no warning no other symptoms

NHTSA ODI #11525214

50,000 miles · Apr 11, 2021
Unknown Or OtherFire

CAR CAUGHT ON FIRE WHEN THE ENGINE WAS OFF FOR 2.5 HOURS. IT HAPPENED WHILE PARKED, IN MY APARTMENT COMPLEX PARKING LOT AND NO ONE WAS INSIDE THE CAR AT THE TIME.

NHTSA ODI #11407469

35,000 miles · Sep 26, 2020
Fuel/propulsion System

BMW 528I 2016 CAR THAT IS LITTLE OVER 4 YEARS LESS JUST HIT 35K MILEAGE LOST ALL ITS FUEL INJECTORS, COILS AND PLUGS. BELOW IS THE SUMMARY OF DIAGNOSIS. 35146 FUEL INJECTORS FAULTY. CONFIRMED SES LIGHT IS ON. DME STORED SOURCED FROM THE VEHICLE MISFIRE FAULTS ON MULTIPLE CYLINDERS. DME ALSO STORED FAULT 118002 "MIXTU…

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BMW 528I 2016 CAR THAT IS LITTLE OVER 4 YEARS LESS JUST HIT 35K MILEAGE LOST ALL ITS FUEL INJECTORS, COILS AND PLUGS. BELOW IS THE SUMMARY OF DIAGNOSIS. 35146 FUEL INJECTORS FAULTY. CONFIRMED SES LIGHT IS ON. DME STORED SOURCED FROM THE VEHICLE MISFIRE FAULTS ON MULTIPLE CYLINDERS. DME ALSO STORED FAULT 118002 "MIXTURE TOO RICH," WORKED THROUGH TEST PLAN. PERFORMED ENGINE TEST AND MANUFACTURER AND BACKED BY DETERMINED CYLINDERS 1, 2, AND 4 INJECTORS FAULTY. DIAGCODE: ITS LIMITED WARRANTY. D1350 00000000 01 002. REMOVED ALL SPARK PLUGS AND FOUND SPARK PLUGS 2, 3, AND 4 FUEL SOAKED. RECOMMEND REPLACE ALL 4 FUEL INJECTORS AND SPARK PLUGS. ALSO RECOMMEND REPLACE ALL 4 IGNITION COILS AS A PREVENTATIVE TOTAL COST ESTIMATED IS AROUND $4500; BMW NORTH AMERICA IS NOT ACKNOWLEDGED THERE IS AN ISSUE WITH CAR OR MODEL

NHTSA ODI #11361227

74,000 miles · Sep 16, 2020
SteeringWheels

THE CAR HAS A PROBLEM WITH THE CV JOINTS, THIS HAS BEEN A PROBLEM SINCE PURCHASING THE CAR IN 10/19 - IF I TRY TO TURN THE STEERING WHEEL AT TIMES WHILE DRIVING IT WON'T TURN. THE BMW CERTIFIED DEALER STATES IT IS BOTH CV JOINTS AND BMW HAS BEEN RECALLING THEIR VEHICLES SINCE 2013 FOR CV JOINTS

NHTSA ODI #11355391

46,000 miles · Jul 15, 2020
Suspension

MY PEOPLE IS MAKING A TAPPING NOISE FROM THE FRONT SUSPENSION AREA I HAVE TAKEN THE CAR TO THE DEALERSHIP ON FOUR DIFFERENT OCCASIONS AND THE LAST TIME WAS ON 6 9 2011 I WAS TOLD TO BRING THE CAR BACK WHEN THE NOISE IS ACTUALLY HAPPENING SO THE LEAD MECHANIC ASKED YOU ROLL WITH ME AND HEARD THE NOISE AND CONFIRMED THAT THERE WAS…

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MY PEOPLE IS MAKING A TAPPING NOISE FROM THE FRONT SUSPENSION AREA I HAVE TAKEN THE CAR TO THE DEALERSHIP ON FOUR DIFFERENT OCCASIONS AND THE LAST TIME WAS ON 6 9 2011 I WAS TOLD TO BRING THE CAR BACK WHEN THE NOISE IS ACTUALLY HAPPENING SO THE LEAD MECHANIC ASKED YOU ROLL WITH ME AND HEARD THE NOISE AND CONFIRMED THAT THERE WAS A PROBLEM I DROPPED THE CAR OFF AFTER TWO DAYS I WAS TOLD THAT THEY CANNOT FIND A PROBLEM DIRECTLY CONTRADICTING WHAT THE LEAD MECHANIC HAD TOLD ME I'M NOT SURE I'M NOT SURE WHAT'S GOING ON I'M ACTUALLY AFRAID TO DRIVE THIS CAR BECAUSE THIS NEWS HAS ACTUALLY GOTTEN WORSE AND LOUDER ALSO GET THIS NOISE WHILE MAKING TURNS IT'S ON A MISTAKE WELL NOISE AND MECHANIC HURTED I'M NOT SURE WHY IT'S NOT BEING TAKEN CARE OF I DON'T KNOW WHAT IT IS THANKS YOU HAVE WOULD BE GREATLY APPRECIATED

NHTSA ODI #11339545

16,000 miles · Apr 9, 2018
Air BagsService BrakesCrashInjury

TAKATA RECALL,, 12-20-2017 I WAS IN A COLLISION. MY VEHICLE REAR ENDED A VEHICLE WHILE TRYING TO STOP. I WAS ALONE IN MY VEHICLE. THE DRIVER SIDE STEERING WHEEL AND KNEE AIRBAGS DEPLOYED. THE PASSENGER FRONT AND REAR SIDE CURTAIN AIRBAGS DEPLOYED. THE DRIVER SIDE FRONT AND REAR SIDE CURTAIN AIRBAGS FAILED TO DEPLOY. BMW UPON…

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TAKATA RECALL,, 12-20-2017 I WAS IN A COLLISION. MY VEHICLE REAR ENDED A VEHICLE WHILE TRYING TO STOP. I WAS ALONE IN MY VEHICLE. THE DRIVER SIDE STEERING WHEEL AND KNEE AIRBAGS DEPLOYED. THE PASSENGER FRONT AND REAR SIDE CURTAIN AIRBAGS DEPLOYED. THE DRIVER SIDE FRONT AND REAR SIDE CURTAIN AIRBAGS FAILED TO DEPLOY. BMW UPON MY REQUEST AND COMPLAINTS HAD THE VEHICLE CHECKED MY ONE OF THEIR ENGINEERS. WHO I WAS TOLD SAID THAT THE DRIVER SIDE CURTAIN AIRBAGS SHOULD NOT HAVE DEPLOYED. WHEN I ASKED THEM WHY WOULD THE PASSENGERS IF I WAS ALONE AND WAS TOLD OH THAT'S A SAFETY PRECAUTION DON'T WORRY ABOUT IT.

NHTSA ODI #11083916

Official recalls

4

24V608000 · Electrical System:wiring:connectors/plugs/receptacles; Engine And Engine Cooling:cooling System:pump

Aug 13, 2024

BMW of North America, LLC. (BMW) is recalling certain 2012-2015 X1 sDrive28i, X1 xDrive28i, 2012-2016 Z4 sDrive28i, 528i, 528i xDrive, 328i, 328xi, 2016-2018 X5 xdrive 40e, 2014-2016 228i, 228xi, 428i, 428i xDrive, 328xi Gran Turismo, 2013-2017 X3 sDrive28i, X3 xDrive28i, 2015-2018 X4 xDrive28i, 2015-2016 428xi vehicles. An improperly sealed electrical connector on the water pump may be exposed to water and short circuit.

Consequence & remedy

Consequence: An electrical short increases the risk of a fire.

Remedy: Dealers will inspect and replace the water pump and plug connector as necessary, and install a protective shield, free of charge. Owner notification letters were mailed on March 28, 2025. Owners may contact BMW customer service at 1-800-525-7417.

Additional source detail variants (2)

Electrical System:wiring:connectors/plugs/receptacles

BMW of North America, LLC. (BMW) is recalling certain 2012-2015 X1 sDrive28i, X1 xDrive28i, 2012-2016 Z4 sDrive28i, 528i, 528i xDrive, 328i, 328xi, 2016-2018 X5 xdrive 40e, 2014-2016 228i, 228xi, 428i, 428i xDrive, 328xi Gran Turismo, 2013-2017 X3 sDrive28i, X3 xDrive28i, 2015-2018 X4 xDrive28i, 2015-2016 428xi vehicles. An improperly sealed electrical connector on the water pump may be exposed to water and short circuit.

Consequence: An electrical short increases the risk of a fire.

Remedy: Dealers will inspect and replace the water pump and plug connector as necessary, and install a protective shield, free of charge. Owner notification letters were mailed on March 28, 2025. Owners may contact BMW customer service at 1-800-525-7417.

Engine And Engine Cooling:cooling System:pump

BMW of North America, LLC. (BMW) is recalling certain 2012-2015 X1 sDrive28i, X1 xDrive28i, 2012-2016 Z4 sDrive28i, 528i, 528i xDrive, 328i, 328xi, 2016-2018 X5 xdrive 40e, 2014-2016 228i, 228xi, 428i, 428i xDrive, 328xi Gran Turismo, 2013-2017 X3 sDrive28i, X3 xDrive28i, 2015-2018 X4 xDrive28i, 2015-2016 428xi vehicles. An improperly sealed electrical connector on the water pump may be exposed to water and short circuit.

Consequence: An electrical short increases the risk of a fire.

Remedy: Dealers will inspect and replace the water pump and plug connector as necessary, and install a protective shield, free of charge. Owner notification letters were mailed on March 28, 2025. Owners may contact BMW customer service at 1-800-525-7417.

16V914000 · Air Bags

Dec 20, 2016

BMW of North America, LLC (BMW) is recalling certain model year 2017 BMW 640i, 640i xDrive, 650i, 650i xDrive, M6, 535i, 535i xDrive, 430i, 430i xDrive, 440i, 440i xDrive, M4, X1 sDrive28i, X1 xDrive28i, i3, i8, Rolls-Royce Dawn, Mini Clubman Cooper, Clubman Cooper S, Cooper All4, Cooper S All4, Mini 4-Door Cooper, Cooper S, Mini 2-Door Cooper, Cooper S, John Cooper Works and 2016 BMW 528i, 528i xDrive, 535i, 535i xDrive, 550i, 550i xDrive, M5 and 535d vehicles. The affected vehicles have seat- mounted side air bag inflator initiators that may fail to ignite during a crash.

Consequence & remedy

Consequence: If the air bag inflator initiator fails to ignite, the seat-mounted air bag will not deploy, increasing the risk of injury.

Remedy: BMW will notify owners, and dealers will replace the air bag modules, free of charge. The recall began February 6, 2017. Owners may contact BMW customer service at 1-800-525-7417.

16V747000 · Seat Belts:front:retractor

Oct 17, 2016

BMW of North America, LLC (BMW) is recalling certain model year 2016-2017 X1 sDrive28i, X1 xDrive28i, MINI Hardtop 4 Door Cooper, Mini Hardtop 4 Door Cooper S, MINI Cooper Clubman, and Cooper S Clubman, 2017 Rolls-Royce Ghost, and 2016 528i vehicles. The vehicle-sensitive locking mechanism of the seat belt Emergency Locking Retractor (ELR) for the driver's seat may not lock as designed. As such, these vehicles fail to comply with the requirements of the Federal Motor Vehicle Safety Standard (FMVSS) number 209, "Seat Belt Assemblies."

Consequence & remedy

Consequence: In the event of a crash where heavy braking is applied, the Emergency Locking Retractor (ELR) may activate when the occupant is more forward in the seat, possibly increasing the risk of injury.

Remedy: BMW will notify owners, and dealers will replace the driver's seat belt assembly, free of charge. The recall began July 3, 2019. Owners may contact BMW customer service at 1-800-525-7417.

15V718000 · Child Seat; Seats:mid/rear Assembly

Oct 30, 2015

BMW of North America, LLC (BMW) is recalling certain model year 2016 528i, 528i xDrive, 535i, 535i xDrive, 535d xDrive, M5, 550i, 550i xDrive, and 535d sedans. The affected vehicles have an inboard lower anchor for child restraints on the left rear seat that may have been bent downwards, preventing the child seat from fully engaging both lower anchors. As such, these vehicles may fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 225, "Child Restraint Anchorage Systems."

Consequence & remedy

Consequence: If the child seat is not properly attached to the lower anchors, it can increase the child's risk of injury in the event of a crash.

Remedy: BMW will notify owners, and dealers will inspect and, if necessary, repair the inboard lower anchor on the left rear seat, free of charge. The recall began on December 28, 2015. Owners may contact BMW customer service at 1-800-525-7417.

Additional source detail variants (2)

Child Seat

BMW of North America, LLC (BMW) is recalling certain model year 2016 528i, 528i xDrive, 535i, 535i xDrive, 535d xDrive, M5, 550i, 550i xDrive, and 535d sedans. The affected vehicles have an inboard lower anchor for child restraints on the left rear seat that may have been bent downwards, preventing the child seat from fully engaging both lower anchors. As such, these vehicles may fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 225, "Child Restraint Anchorage Systems."

Consequence: If the child seat is not properly attached to the lower anchors, it can increase the child's risk of injury in the event of a crash.

Remedy: BMW will notify owners, and dealers will inspect and, if necessary, repair the inboard lower anchor on the left rear seat, free of charge. The recall began on December 28, 2015. Owners may contact BMW customer service at 1-800-525-7417.

Seats:mid/rear Assembly

BMW of North America, LLC (BMW) is recalling certain model year 2016 528i, 528i xDrive, 535i, 535i xDrive, 535d xDrive, M5, 550i, 550i xDrive, and 535d sedans. The affected vehicles have an inboard lower anchor for child restraints on the left rear seat that may have been bent downwards, preventing the child seat from fully engaging both lower anchors. As such, these vehicles may fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 225, "Child Restraint Anchorage Systems."

Consequence: If the child seat is not properly attached to the lower anchors, it can increase the child's risk of injury in the event of a crash.

Remedy: BMW will notify owners, and dealers will inspect and, if necessary, repair the inboard lower anchor on the left rear seat, free of charge. The recall began on December 28, 2015. Owners may contact BMW customer service at 1-800-525-7417.

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.