Illustration2017 Range Rover sport The rear middle seat belt retractable does not lock and retract. When driving ,middle passenger seat belt is only lock due to seat belt issues. I got estimate from rover range to fix issue of $600.00 will supply repair when dealer finish with issues.
2017 Land Rover Range Rover Sport
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2017 Land Rover Range Rover Sport do not stand out strongly from the model-year median of 25.5.
About this comparison →How this year compares
Owner complaints by model year
Compare all Range Rover Sport years →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
Limited mileage data: 19 of 59 reports include usable mileage. There isn’t enough coverage to show a useful chart.
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.
- Steering. Review the 22 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Suspension. Review the 12 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Fuel/propulsion System. Review the 8 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
2 crash reports0 fire reports1 injury reports
What owners actually said
59 reportsUnsure what first came on but the check engine light came on there would be no issues when driving nor lack of power, then filled up my tank and first try the engine would stall second try engine would take a longer time to roll over and revs would slightly fluctuate almost sounding like it would stall out again but didn’t after…
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Unsure what first came on but the check engine light came on there would be no issues when driving nor lack of power, then filled up my tank and first try the engine would stall second try engine would take a longer time to roll over and revs would slightly fluctuate almost sounding like it would stall out again but didn’t after and when ever starting up the vehicle nothing else happened after with that issue only when fueling up. but brought my vehicle to a Land Rover dealerships, they next tried diagnosing my vehicle found a small P0442 small evap leak didn’t find anything then did a smoke test and still didn’t find anything wanted to do a much bigger pricey diagnostic, I declined had the check engine light taking off but gas cap warning would appear later down the line then the check engine light would come on again. I changed the gas cap had past codes erased and things lasted a little longer then before but still came back on.
When ever playing music through loud or soft volumes I can hear a static sound coming from all speakers. The static like noise can be heard more your phone is connected through usb through apple/android car play on both usb connector ports. when using just bluetooth its not as noticeable but can sometimes still hear it. When usi…
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When ever playing music through loud or soft volumes I can hear a static sound coming from all speakers. The static like noise can be heard more your phone is connected through usb through apple/android car play on both usb connector ports. when using just bluetooth its not as noticeable but can sometimes still hear it. When using just the radio am/fm setting its not as present but you will get a little static noise. Note my RRS has the 825 watt meridian sound system so when adjusting the bass, treble or sub the static can still be present even at different volumes. Note the cables to the usb have been changed and are new when trying to see if its the phone cable or not but still the noise is present. I am just wondering if it may entail to a software update that is needed on the vehicle.
P275/45 R21 Bought new in 2019 with set a brand new tires. 3 of 4 have suffered tread separation in under 19k miles (65k tire). The separation has occurred between the belt and inner tire rubber. It bulges the tire tread, causing vibration and a bald spot on the tread. Found numerous other online reports of these tires have trea…
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P275/45 R21 Bought new in 2019 with set a brand new tires. 3 of 4 have suffered tread separation in under 19k miles (65k tire). The separation has occurred between the belt and inner tire rubber. It bulges the tire tread, causing vibration and a bald spot on the tread. Found numerous other online reports of these tires have tread separation issues.
The Passenger seat air bag sensor is defected and needs replacement for the passenger side air bag to function. The passenger air bag has been inoperable for many months. The estimated cost to repair is $1,800.00.
The contact owns a 2017 Land Rover Range Rover Sport. The contact stated that while attempting to reverse out of her driveway, the transmission ceased in park(P). There were no warning lights illuminated. The vehicle was towed to the dealer to be diagnosed. The contact was informed that the gear shifter needed to be repaired. Th…
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The contact owns a 2017 Land Rover Range Rover Sport. The contact stated that while attempting to reverse out of her driveway, the transmission ceased in park(P). There were no warning lights illuminated. The vehicle was towed to the dealer to be diagnosed. The contact was informed that the gear shifter needed to be repaired. The vehicle was repaired. The manufacturer was notified of the failure. The approximate failure mileage was 76,000.
The back rear door keeps causing the alarm to malfunction and go off. Also, as I was driving on the main road the back door came open on a passenger seated in the back. This was a major scare & could’ve been very deadly if my passenger didn’t have their seat belt on.
The contact owns a 2017 Land Rover Range Rover Sport. The contact stated while driving 60 MPH, the vehicle inadvertently stalled and lost motive power. The warning message "No Fuel" appeared on the instrument panel. The contact stated that she veered to side of the road and was unable to restart the vehicle after several attempt…
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The contact owns a 2017 Land Rover Range Rover Sport. The contact stated while driving 60 MPH, the vehicle inadvertently stalled and lost motive power. The warning message "No Fuel" appeared on the instrument panel. The contact stated that she veered to side of the road and was unable to restart the vehicle after several attempts. The vehicle was towed to the dealer who diagnosed that the computer software system needed to be updated. The contact stated that the vehicle was repaired however, the failure had been recurring while driving. The vehicle was taken to the dealer several times. The computer software system was updated, and the fuel sensors were replaced. The contact stated that the failure reoccurred while driving. The dealer was made aware of the failure. The manufacturer was not made aware of the failure. The vehicle was not repaired. The approximate failure mileage was 20,000.
While I am in intersections driving, the car completely shuts off and I have to start the car back up for it to actually drive. It completely turns off while you’re driving. I have had several electrical issues with the car that have also been repaired. I’ve brought the car into the dealer service center over seven times and th…
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While I am in intersections driving, the car completely shuts off and I have to start the car back up for it to actually drive. It completely turns off while you’re driving. I have had several electrical issues with the car that have also been repaired. I’ve brought the car into the dealer service center over seven times and they have not been able to reproduce the issue of shutting off. I have installed a dash cam to record when it happens randomly. I reported to Land Rover corporate and they have not done anything over 8 months with this issue. I have two daughters and I’m concerned about getting into an accident with this car shutting off randomly. This has been occurring since I purchased the car in October 2020. Please help.
Fuel gauge indicated no fuel even though tank was just filled. Vehicle went into limp mode then would only start for a minute. Exact same symptoms as current recall for same model year but ours is outside of VIN range for that recall. Vehicle only has 35k miles and had fuel pump replaced which has seemed to fix the problem altho…
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Fuel gauge indicated no fuel even though tank was just filled. Vehicle went into limp mode then would only start for a minute. Exact same symptoms as current recall for same model year but ours is outside of VIN range for that recall. Vehicle only has 35k miles and had fuel pump replaced which has seemed to fix the problem although fuel gauge won’t read full ever.
Official recalls
625V514000 · Steering:linkages:knuckle:spindle:arm
Aug 8, 2025
Jaguar Land Rover North America, LLC (Land Rover) is recalling certain 2014-2017 Range Rover and Range Rover Sport vehicles. The front suspension upper knuckle joint may crack, which can result in suspension arm detachment.
Consequence & remedy
Consequence: Suspension arm detachment can cause a loss of vehicle handling and control, increasing the risk of a crash.
Remedy: Dealers will inspect the front suspension knuckles and install a retaining bracket or replace the knuckle, as necessary, free of charge. Owner notification letters were mailed May 11, 2026. Owners may contact Land Rover's customer service at 1-800-637-6837. Land Rover's numbers for this recall are D019, N759, D041, and D027. This recall expands and replaces previous NHTSA recall number 24V840.
22V219000 · Seat Belts:front:retractor
Apr 5, 2022
Jaguar Land Rover North America, LLC (Land Rover) is recalling certain 2016-2017 Range Rover and Range Rover Sport vehicles. The driver's seat belt emergency locking retractor may not lock as intended. As such, these vehicles fail to comply with the requirements of the Federal Motor Vehicle Safety Standard (FMVSS) numbers 209, "Seat Belt Assemblies" and 208, "Occupant Crash Protection."
Consequence & remedy
Consequence: During hard braking before a crash, the seat belt emergency locking retractor may not lock as intended, increasing the risk of injury.
Remedy: Dealers will inspect and replace the seat belt assembly, as necessary, free of charge. Owner notification letters were mailed July 29, 2022. Owners may contact Land Rover customer service at 1-800-637-6837. Land Rover's number for this recall is N678. This recall replaces NHTSA recall number 19V-350. Vehicles previously inspected under recall 19V-350 that did not receive a replacement seat belt assembly will need to have this new recall remedy performed.
19V350000 · Seat Belts
May 9, 2019
Jaguar Land Rover North America, LLC (Land Rover) is recalling certain 2016-2017 Range Rover and Range Rover Sport vehicles. The driver's seat belt Emergency Locking Retractor (ELR) 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: If the driver brakes prior to a crash, the ELR will not lock at the correct g-force level, increasing the risk of injury.
Remedy: Land Rover will notify owners, and dealers will inspect the seat belt assembly, replacing it if necessary, free of charge. The recall began September 10, 2019. Owners may contact Land Rover customer service at 1-800-637-6837. Land Rover's number for this recall is N333.
18V337000 · Electrical System:software; Fuel System, Gasoline
May 23, 2018
Jaguar Land Rover North America, LLC (Land Rover) is recalling certain 2017 Land Rover Range Rover, Range Rover Sport, and Discovery vehicles. The fuel gauge on these vehicles may indicate that the fuel level is low and illuminate the warning lamp, when the fuel tank actually has more fuel. The engine management software may also cut off the engine when the vehicle has traveled approximately 17 more miles.
Consequence & remedy
Consequence: If the engine were to shut off, it can cause loss of power brake assistance. An engine stall would cause a loss of drive power. Both scenarios can increase the risk of a crash.
Remedy: Land Rover will notify owners, and dealers will install a software update to correct the fuel level reading, free of charge. The recall began on June 22, 2018. Owners may Land Rover customer service at 1-800-637-6837. Land Rover's number for this recall is N206.
Additional source detail variants (2)
Electrical System:software
Jaguar Land Rover North America, LLC (Land Rover) is recalling certain 2017 Land Rover Range Rover, Range Rover Sport, and Discovery vehicles. The fuel gauge on these vehicles may indicate that the fuel level is low and illuminate the warning lamp, when the fuel tank actually has more fuel. The engine management software may also cut off the engine when the vehicle has traveled approximately 17 more miles.
Consequence: If the engine were to shut off, it can cause loss of power brake assistance. An engine stall would cause a loss of drive power. Both scenarios can increase the risk of a crash.
Remedy: Land Rover will notify owners, and dealers will install a software update to correct the fuel level reading, free of charge. The recall began on June 22, 2018. Owners may Land Rover customer service at 1-800-637-6837. Land Rover's number for this recall is N206.
Fuel System, Gasoline
Jaguar Land Rover North America, LLC (Land Rover) is recalling certain 2017 Land Rover Range Rover, Range Rover Sport, and Discovery vehicles. The fuel gauge on these vehicles may indicate that the fuel level is low and illuminate the warning lamp, when the fuel tank actually has more fuel. The engine management software may also cut off the engine when the vehicle has traveled approximately 17 more miles.
Consequence: If the engine were to shut off, it can cause loss of power brake assistance. An engine stall would cause a loss of drive power. Both scenarios can increase the risk of a crash.
Remedy: Land Rover will notify owners, and dealers will install a software update to correct the fuel level reading, free of charge. The recall began on June 22, 2018. Owners may Land Rover customer service at 1-800-637-6837. Land Rover's number for this recall is N206.
17V679000 · Electrical System: Instrument Cluster/panel
Oct 26, 2017
Jaguar Land Rover North America, LLC (Land Rover) is recalling certain 2017 Land Rover Range Rover and Range Rover Sport vehicles. The instrument cluster (IC) may intermittently go blank.
Consequence & remedy
Consequence: A blank instrument cluster will not show important information like vehicle speed, increasing the risk of a crash.
Remedy: Land Rover will notify owners, and dealers will update the vehicle software, free of charge. The recall is expected to begin December 19, 2017. Owners may contact Land Rover customer service at 1-800-637-6837. Land Rover's number for this recall is N124.
16V942000 · Seat Belts:pretensioner
Dec 29, 2016
Jaguar Land Rover North America, LLC (Land Rover) is recalling certain model year 2017 Land Rover Discovery Sport vehicles and 2016-2017 Land Rover Range Rover and Range Rover Sport vehicles. The affected vehicles have seatbelt pretensioners that may not function properly in the event of a crash.
Consequence & remedy
Consequence: If the front seat seatbelt pretensioners do not function properly, the seat occupants may not be adequately restrained in the event of a crash, increasing the risk of injury.
Remedy: Land Rover will notify owners, and dealers will inspect the front seat belt assemblies, replacing them as necessary, free of charge. The recall began February 20, 2017. Owners may contact Land Rover customer service at 1-800-637-6837. Land Rover's number for this recall is P095.
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
3EA26003 · Front Steering Knuckle Fractures
Opened Apr 24, 2026 · No close date supplied
Status: open (inferred from source dates) · Steering:linkages:knuckle:spindle:arm
The Office of Defects Investigation (ODI) is upgrading its Preliminary Evaluation (PE25006) of front steering knuckle fractures on model year (MY) 2014 through 2017 Range Rover Sport vehicles to an Engineering Analysis. ODI opened PE25006 on June 27, 2025, after receiving 12 Vehicle Owner's Questionnaire (VOQ) reports of the front aluminum steering knuckles fracturing in these vehicles. The reports describe the fractures occurring at the joint where the steering knuckle attaches to the upper control arm ball joint in one or both steering knuckles. Fracture of the front suspension knuckle can lead to detachment of the upper suspension arm. Detachment of the upper suspension arm results in the driver’s inability to control the vehicle, increasing the risk of a crash. ODI reviewed information supplied by Jaguar Land Rover (JLR) in response to Information Request letters as well as reviewed the data with JLR on numerous occasions. ODI further reviewed relevant data on a peer vehicle with a significantly similar steering knuckle design, the MY 2014 through 2017 Range Rover. Much of the information is contradictory and requires a deeper analysis that is available in an Engineering Analysis. On August 5, 2025, Jaguar Land Rover (JLR) filed safety recall 25V514. This recall covers certain MY 2014 and all MY 2015-2017 Range Rover and Range Rover Sport vehicles. The remedy for recall 25V514 addresses knuckles with and without a visible fracture. Knuckles that have developed a visible fracture will be replaced with a new knuckle of a substantially similar design. Knuckles with no fracture visibly present will have a brace attached to the upper portion of the front steering knuckle. JLR states that the purpose of the brace is to prevent the component from completely separating should a fracture develop. NHTSA continues to receive allegations of fractures occurring in the front steering knuckles of Range Rover and Range Rover Sport vehicles. Two of the most recent VOQs received by ODI involve front steering knuckle fractures occurring on MY 2020 and MY 2021 Range Rover L405 vehicles. ODI will continue to investigate the component design and assess the potential safety risk as part of this Engineering Analysis and evaluate the recall remedies for Recall 25V514. Further, the scope of this Engineering Analysis will be expanded to include MY 2018-2022 Range Rover and Range Rover Sport vehicles as they have a substantially similar component design. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.
PE25006 · Front Steering Knuckle Fractures
Opened Jun 27, 2025 · Closed Apr 24, 2026
Status: closed (inferred from source dates) · Steering:linkages:knuckle:spindle:arm
The Office of Defects Investigation (ODI) is upgrading its Preliminary Evaluation (PE25006) of front steering knuckle fractures on model year (MY) 2014 through 2017 Range Rover Sport vehicles to an Engineering Analysis. ODI opened PE25006 on June 27, 2025, after receiving 12 Vehicle Owner's Questionnaire (VOQ) reports of the front aluminum steering knuckles fracturing in these vehicles. The reports describe the fractures occurring at the joint where the steering knuckle attaches to the upper control arm ball joint in one or both steering knuckles. Fracture of the front suspension knuckle can lead to detachment of the upper suspension arm. Detachment of the upper suspension arm results in the driver’s inability to control the vehicle, increasing the risk of a crash. ODI reviewed information supplied by Jaguar Land Rover (JLR) in response to Information Request letters as well as reviewed the data with JLR on numerous occasions. ODI further reviewed relevant data on a peer vehicle with a significantly similar steering knuckle design, the MY 2014 through 2017 Range Rover. Much of the information is contradictory and requires a deeper analysis that is available in an Engineering Analysis. On August 5, 2025, Jaguar Land Rover (JLR) filed safety recall 25V514. This recall covers certain MY 2014 and all MY 2015-2017 Range Rover and Range Rover Sport vehicles. The remedy for recall 25V514 addresses knuckles with and without a visible fracture. Knuckles that have developed a visible fracture will be replaced with a new knuckle of a substantially similar design. Knuckles with no fracture visibly present will have a brace fitted to the upper portion of the front steering knuckle. JLR states that the purpose of the brace is to prevent the component from completely separating should a fracture develop. NHTSA continues to receive allegations of fractures occurring in the front steering knuckles of Range Rover and Range Rover Sport vehicles. ODI will close PE25006 and continue to investigate the component design and assess the potential safety risk as part of an Engineering Analysis (EA26003) and evaluate the recall remedies for Recall 25V514. Further, the scope of this Engineering Analysis will be expanded to include MY 2018-2022 Range Rover and Range Rover Sport vehicles as they have a substantially similar component design. To review the ODI reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.
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.