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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

Electrical System complaints

33 reports
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Mileage unknown · May 27, 2025
Electrical SystemEngine And Engine Cooling

The contact owns a 2016 BMW 528I. The contact received notification of NHTSA Campaign Number: 24V608000 (Engine and Engine Cooling, Electrical System); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The deal…

Read full complaint

The contact owns a 2016 BMW 528I. The contact received notification of NHTSA Campaign Number: 24V608000 (Engine and Engine Cooling, Electrical System); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was not made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

NHTSA ODI #11663133

68,000 miles · May 22, 2025
Electrical SystemEngine And Engine Cooling

The contact owns a 2016 BMW 528I. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power. There was no warning light illuminated. The vehicle was towed to an independent mechanic, where it was diagnosed that the electrical connector on the water pump had failed and needed to be replaced. The…

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The contact owns a 2016 BMW 528I. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power. There was no warning light illuminated. The vehicle was towed to an independent mechanic, where it was diagnosed that the electrical connector on the water pump had failed and needed to be replaced. The vehicle was not repaired. The contact received notification of NHTSA Campaign Number: 24V608000 (Engine and Engine Cooling, Electrical System); however, the part to do the recall repair was unavailable. The dealer was contacted and confirmed that parts were not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure. The failure mileage was approximately 68,000. VIN tool confirms parts not available.

NHTSA ODI #11662659

80,000 miles · May 19, 2025
Electrical SystemEngine And Engine Cooling

The contact owns a 2016 BMW 528i. The contact stated that while his partner was driving at undisclosed speeds, there was smoke coming from the engine and entering the cabin through the vents while the heater was activated. There was an abnormal burning odor entering the cabin. The contact also observed the burning odor while dri…

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The contact owns a 2016 BMW 528i. The contact stated that while his partner was driving at undisclosed speeds, there was smoke coming from the engine and entering the cabin through the vents while the heater was activated. There was an abnormal burning odor entering the cabin. The contact also observed the burning odor while driving the vehicle. There were no warning lights illuminated. The contact received notification of NHTSA Campaign Number: 24V608000 (Engine and Engine Cooling, Electrical System); however, the part to do the recall repair was not yet available. The local dealer was not contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The failure mileage was approximately 80,000. VIN tool confirms parts not available.

NHTSA ODI #11661790

Mileage unknown · Apr 15, 2025
Electrical SystemEngine And Engine Cooling

The contact owns a 2016 BMW 528I. The contact received notification of NHTSA Campaign Number: 24V608000 (Engine and Engine Cooling, Electrical System); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time…

Read full complaint

The contact owns a 2016 BMW 528I. The contact received notification of NHTSA Campaign Number: 24V608000 (Engine and Engine Cooling, Electrical System); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

NHTSA ODI #11654845

Mileage unknown · Apr 9, 2025
Electrical SystemEngineSuspension

I've gotten my car fixed multiple times and nothing has worked. My car is leaking coolant severely it overheats constantly I get the red and the yellow message. My heater is self stopped working and my car on the freeway has stopped from going 75 to 80 miles dropping all the way to 20 miles.

NHTSA ODI #11653684

Mileage unknown · Mar 17, 2025
Electrical SystemEngine And Engine Cooling

The contact owns a 2016 BMW 528I. The contact received notification of NHTSA Campaign Number: 24V608000 (ENGINE AND ENGINE COOLING, ELECTRICAL SYSTEM); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufactur…

Read full complaint

The contact owns a 2016 BMW 528I. The contact received notification of NHTSA Campaign Number: 24V608000 (ENGINE AND ENGINE COOLING, ELECTRICAL SYSTEM); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

NHTSA ODI #11648795

137,000 miles · Mar 4, 2025
Electrical SystemEngine And Engine Cooling

The contact owns a 2016 BMW 528I. The contact stated that while attempting to activate the heating system, the heating system failed to activate. There was an abnormal coolant odor entering the vehicle through the vents. The contact received notification of NHTSA Campaign Number: 24V608000 (ENGINE AND ENGINE COOLING, ELECTRICAL …

Read full complaint

The contact owns a 2016 BMW 528I. The contact stated that while attempting to activate the heating system, the heating system failed to activate. There was an abnormal coolant odor entering the vehicle through the vents. The contact received notification of NHTSA Campaign Number: 24V608000 (ENGINE AND ENGINE COOLING, ELECTRICAL SYSTEM); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure; however, the manufacturer was unable to confirm when parts would be available. The failure mileage was 137,000. VIN tool confirms parts not available.

NHTSA ODI #11646327

Mileage unknown · Mar 3, 2025
Electrical SystemEngine And Engine Cooling

The contact owns a 2016 BMW 528I. The contact received notification of NHTSA Campaign Number: 24V608000 (ENGINE AND ENGINE COOLING, ELECTRICAL SYSTEM); however, the part to do the recall repair was not yet available. The local dealer was not contacted. The contact stated that the manufacturer had exceeded a reasonable amount of …

Read full complaint

The contact owns a 2016 BMW 528I. The contact received notification of NHTSA Campaign Number: 24V608000 (ENGINE AND ENGINE COOLING, ELECTRICAL SYSTEM); however, the part to do the recall repair was not yet available. The local dealer was not contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

NHTSA ODI #11646014

Mileage unknown · Feb 19, 2025
Electrical SystemEngineFuel/propulsion System

Leak error messages that cannot be removed until recall issue with fluid leak is fixed. Leak is corroding engine fuel lines and can cause a fire Will driving. The remedy is taking to long to be deployed. Need assistance with this issue.

NHTSA ODI #11643709

Mileage unknown · Feb 18, 2025
Electrical SystemEngine And Engine Cooling

The contact owns a 2016 BMW 528I. The contact received notification of NHTSA Campaign Number: 24V608000 (ENGINE AND ENGINE COOLING, ELECTRICAL SYSTEM); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufactur…

Read full complaint

The contact owns a 2016 BMW 528I. The contact received notification of NHTSA Campaign Number: 24V608000 (ENGINE AND ENGINE COOLING, ELECTRICAL SYSTEM); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

NHTSA ODI #11643475

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.