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2018 Subaru Forester

Owner reports · Recalls · Investigations

More warning signs than most Forester years

Owner complaints for the 2018 Subaru Forester are substantially higher than the model-year median of 131.

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When problems were reported

Mileage at the reported incident

241 reports with mileage · 252 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.

  • Visibility/wiper. Review the 135 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Air Bags. Review the 96 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 70 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

26 crash reports1 fire reports6 injury reports

Vehicle Speed Control complaints

30 reports
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Mileage unknown · Dec 4, 2023
Fuel/propulsion SystemPower TrainVehicle Speed ControlCrash

Twice in the last 4 months, after turning into a parking place and accelerating gently to pull forward into the space, the car surged forward much more than it should have given my light acceleration. The first time this happened I slammed into a split rail fence which broke, damaging the vehicle. The fence parts went over a re…

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Twice in the last 4 months, after turning into a parking place and accelerating gently to pull forward into the space, the car surged forward much more than it should have given my light acceleration. The first time this happened I slammed into a split rail fence which broke, damaging the vehicle. The fence parts went over a restraining wall and damaged a house. I was able to stop the car but it came very close to going over the 6 foot restraining wall, which might very well have killed me. It happened again today in a different location but similar circumstance and no damage was done because I was able to stop before it hit the house. The car surged on its own. I had the damage to the car fixed, but the problem has not been confirmed by a service center. The damage was inspected by my insurance company and repaired by an auto body shop. My insurance rates will be increased because of the incident. There were no warning lights, messages or other symptoms prior to the episodes.

NHTSA ODI #11558442

Mileage unknown · May 27, 2023
Vehicle Speed Control

While reversing out from a drive way and turning to get into the lane the cars velocity massively increased from no throttle coasting to approximately 20 mph. Panic braking and enough space due to it being a cul-de-sac saved us, but we were launched forward in our seats and slammed back during breaking. we were very fortunate …

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While reversing out from a drive way and turning to get into the lane the cars velocity massively increased from no throttle coasting to approximately 20 mph. Panic braking and enough space due to it being a cul-de-sac saved us, but we were launched forward in our seats and slammed back during breaking. we were very fortunate not to have anyone or anything behind us as we nearly went over a curb and into a lawn. A very scary experience that has cast doubt onto this vehicles driving suitability.

NHTSA ODI #11524107

Mileage unknown · Jan 27, 2023
Fuel/propulsion SystemService BrakesVehicle Speed Control

I was the first car stopped at a red light of an intersection coming off the freeway, in far right lane. When the light turned green, as I released my foot off the brake and not even stepping on the gas the RPM surged with full force accelerating without my foot on the gas. I stepped on the brake but it would not engage - it loc…

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I was the first car stopped at a red light of an intersection coming off the freeway, in far right lane. When the light turned green, as I released my foot off the brake and not even stepping on the gas the RPM surged with full force accelerating without my foot on the gas. I stepped on the brake but it would not engage - it locked. The steering wheel locked and only had minimal movement, as much movement as you would get in a parked position. There was no way to stop the car. Given the lane position and obstructions ahead (freeway on ramp), the car ran over a median and scraped along side the curb and on top to damage the front passenger wheel enough for it to pop. Only when the wheel broke did the car’s brake re-engage and I was able to put it into park. The vehicle has not yet been inspected and is available in my driveway for inspection. There was no warning or indicators leading up to this. In fact, the vehicle had just been inspected for an oil change at the dealership three weeks prior. This accident would have caused a fatality, mine, if not many others if there had been cars ahead of me or cars had been in the intersection or if the wheel did not break in time before merging with the freeway traffic. I am fearful to drive this car again. There were absolutely NO indicators leading up to this or right before it happened. The car simply took over and there was no control of it.

NHTSA ODI #11504015

Mileage unknown · Mar 12, 2022
Forward Collision AvoidanceFuel/propulsion SystemVehicle Speed ControlCrash

I took our 2018 Subaru Forester through a car wash. The usual washing procedure went just fine with me in the car idling in neutral as it went through. When it came to the end of the wash cycle, I coasted out and then shifted into drive. Instantly the car surged forward at an alarming speed and I could not stop it. The car cross…

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I took our 2018 Subaru Forester through a car wash. The usual washing procedure went just fine with me in the car idling in neutral as it went through. When it came to the end of the wash cycle, I coasted out and then shifted into drive. Instantly the car surged forward at an alarming speed and I could not stop it. The car crossed a busy street. I fortunately did not collide with cars. The car continued into a field next to a Ford dealer’s lot at a high speed and I was unable to stop it. I managed to swerve right to avoid crashing into the cars parked on the Ford lot. This sent the car back toward the road. Fortunately I hit a lone fire hydrant along the road, shearing the hydrant completely off. The hydrant was dragged along under the front left tire until it hit the curb stopping the car. The air bag did not deploy and I was not injured. This all occurred in a matter of seconds.

NHTSA ODI #11456421

19,000 miles · Mar 4, 2022
Vehicle Speed Control

The contact owns a 2018 Subaru Forester. The contact stated while driving approximately 2 MPH while pulling into a parking spot, the vehicle lurched forward. The contact stated that she heard the engine revving but did not notice any warning lights. The contact had not taken the vehicle to the local dealer. The vehicle was not r…

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The contact owns a 2018 Subaru Forester. The contact stated while driving approximately 2 MPH while pulling into a parking spot, the vehicle lurched forward. The contact stated that she heard the engine revving but did not notice any warning lights. The contact had not taken the vehicle to the local dealer. The vehicle was not repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 19,000.

NHTSA ODI #11455220

Mileage unknown · Feb 21, 2022
Forward Collision AvoidanceVehicle Speed ControlCrash

Unknown system that failed but vehicle equiped with EyeSight and all of Subaru safety features. Air bag did not deploy. Pulling into curbed parking space at city park. Speed <10 mph while in parking lot. Applied brake while pulling in space to park and car accelerated jumping the curb. The car was out of control and lucki…

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Unknown system that failed but vehicle equiped with EyeSight and all of Subaru safety features. Air bag did not deploy. Pulling into curbed parking space at city park. Speed <10 mph while in parking lot. Applied brake while pulling in space to park and car accelerated jumping the curb. The car was out of control and luckily heading into the woods. Tried to apply brake again but car kept accelerating. Car went approximately 10-12 feet and crashed into a tree. I suffered only stiffness and sore muscles from the seatbelt. An accident report was filed with local police department. No warning lamps, messages or other messages appeared prior to the incident.

NHTSA ODI #11453186

Mileage unknown · Sep 6, 2021
EngineVehicle Speed ControlCrash

Sudden unexplained acceleration incident. Car accelerated without input from driver and rear-ended a parked vehicle in front of the vehicle Eyesight system did not engage to warn or prevent impact with rear end of car in front. The vehicle was travelling at low speed and suddenly accelerated. This is dangerous because it does n…

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Sudden unexplained acceleration incident. Car accelerated without input from driver and rear-ended a parked vehicle in front of the vehicle Eyesight system did not engage to warn or prevent impact with rear end of car in front. The vehicle was travelling at low speed and suddenly accelerated. This is dangerous because it does not provide enough time to prevent from hitting an object in front of the vehicle like a car or person. The problem has not been reproduced by by the manufacturer who sent a technician who inspected the vehicle and could not find any saved info in the event data recorder or saved diagnostics codes. Complaints were filed with the dealership before the incident that the eyesight system did not appear to be functioning correctly. The first time this has happened was 6/02/2021 in the afternoon on a clear day on a clear pathway without any obstructions. The second time this happened was 9/06/2021. The second incident the vehicle accelerated while travelling at lo speed with the eyesight system briefly warning tone beeping. The brakes were applied quickly and the carr seemed almost to stall. The engine made a noise as the stalling conditions ended and the car went back to normal. Subaru filed a service request previously. SR# 1-70302162357.

NHTSA ODI #11431872

Mileage unknown · Sep 6, 2021
EngineVehicle Speed ControlCrash

Sudden unexplained acceleration incident. Car accelerated without input from driver and rear-ended a parked vehicle in front of the vehicle Eyesight system did not engage to warn or prevent impact with rear end of car in front. The vehicle was travelling at low speed and suddenly accelerated. This is dangerous because it does n…

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Sudden unexplained acceleration incident. Car accelerated without input from driver and rear-ended a parked vehicle in front of the vehicle Eyesight system did not engage to warn or prevent impact with rear end of car in front. The vehicle was travelling at low speed and suddenly accelerated. This is dangerous because it does not provide enough time to prevent from hitting an object in front of the vehicle like a car or person. The problem has not been reproduced by by the manufacturer who sent a technician who inspected the vehicle and could not find any saved info in the event data recorder or saved diagnostics codes. Complaints were filed with the dealership before the incident that the eyesight system did not appear to be functioning correctly. The first time this has happened was 6/02/2021 in the afternoon on a clear day on a clear pathway without any obstructions. The second time this happened was 9/06/2021. The second incident the vehicle accelerated while travelling at low speed with the eyesight system briefly warning tone beeping. The brakes were applied quickly and the car seemed almost to stall. The engine made a noise as the stalling conditions ended and the car went back to normal. Subaru filed a service report SR# 1-70302162357. State Farm opened a claim 3620R756C.

NHTSA ODI #11431870

Mileage unknown · Jun 23, 2021
Power TrainVehicle Speed Control

Follow up-to complaint #11420905 submitted 6/14/2021. The car was taken back to the dealership due to stall, hesitation, slowness, and erratic uncontrolled acceleration. Safety was the main issue. The dealer confirmed the concern and replaced the transmission with a remanufactured one. The problems still remain with the exce…

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Follow up-to complaint #11420905 submitted 6/14/2021. The car was taken back to the dealership due to stall, hesitation, slowness, and erratic uncontrolled acceleration. Safety was the main issue. The dealer confirmed the concern and replaced the transmission with a remanufactured one. The problems still remain with the exception of the stalling. We believe this situation requires further thorough investigation and possible recall or new transmission installation.

NHTSA ODI #11422048

Mileage unknown · Jun 14, 2021
Fuel/propulsion SystemPower TrainVehicle Speed Control

The 2018 Forrester XT was taken to Subaru Dealer (Gwinnett) for a routine 42,000-mile service. There were no issues with the car. Shortly after picking up and driving approximately 30 miles the car stalled twice at traffic lights. The engine was restarted but started to exhibit sluggish and erratic acceleration, especially fro…

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The 2018 Forrester XT was taken to Subaru Dealer (Gwinnett) for a routine 42,000-mile service. There were no issues with the car. Shortly after picking up and driving approximately 30 miles the car stalled twice at traffic lights. The engine was restarted but started to exhibit sluggish and erratic acceleration, especially from 0-45 MPH. The car was taken back to Gwinnett Subaru the next day. They did some data retrieval and found a mass airflow event, cleaned the air filter, test drove the car, and released it to us. The next few days, the same problems were experienced but the car did not stall. At one point, at a traffic light, the car would simply not accelerate even with full pedal pressure which was gradually increased. When it finally did, it was uncontrolled and erratic. Highway driving once speed was reached seemed normal, but any acceleration from a slower speed was problematic. On Monday 6-14-2021 the car was taken back to the dealer due to serious concerns about safety and the possibility of the loss of power when critically needed or when on the highway. The dealer promised to investigate the problem further. That evening, we were informed that it was their assessment that the car would need a brand new CVT transmission. The car has approximately 41,100 miles and we were told that it would be covered by the 5 years/60,000 miles powertrain warranty. Expected to take 7-10 days for repair.

NHTSA ODI #11420905

Official recalls

3

21V587000 · Fuel System, Gasoline:delivery:fuel Pump

Jul 29, 2021

Subaru of America, Inc. (Subaru) is recalling certain 2019-2020 Ascent, 2018 Forester, 2018-2020 Impreza, Legacy, Outback, 2018-2019 BRZ, WRX, and Toyota 86 vehicles. The low-pressure fuel pump inside the fuel tank may fail.

Consequence & remedy

Consequence: Fuel pump failure can cause an engine stall while driving, increasing the risk of a crash.

Remedy: Dealers will replace the low-pressure fuel pump, free of charge. Owner notification letters were mailed September 24, 2021. Subaru and Toyota owners may call customer service at 1-844-373-6614. Subaru's number for this recall is WRG-21.

19V701000 · Air Bags:sensor:occupant Classification

Oct 3, 2019

Subaru of America, Inc. (Subaru) is recalling certain 2015-2018 Forester vehicles equipped with heated seats. An electrical connection in the front passenger seat for the Occupant Detection System (ODS) may loosen.

Consequence & remedy

Consequence: If the connection loosens, the front passenger airbag may deactivate even though the seat is occupied, increasing the risk of injury to the front passenger in the event of a crash.

Remedy: Subaru will notify owners, and dealers will inspect and, as necessary, replace the ODS sensor mat harness, free of charge. The recall began February 11, 2020. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WUM-98.

18V455000 · Equipment:other:labels; Tires

Jul 10, 2018

Subaru of America, Inc. (Subaru) is recalling certain 2018 Subaru Forester vehicles. The Certification Label may indicate the incorrect wheel size, tire size, and air pressure. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 110, "Tire Selection and Rims."

Consequence & remedy

Consequence: Installing incorrect tires or applying incorrect tire air pressure may increase the risk of a crash.

Remedy: Subaru will notify owners, and dealers will install a corrected label, free of charge. The recall began July 26, 2018. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WTS-78.

Additional source detail variants (2)

Equipment:other:labels

Subaru of America, Inc. (Subaru) is recalling certain 2018 Subaru Forester vehicles. The Certification Label may indicate the incorrect wheel size, tire size, and air pressure. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 110, "Tire Selection and Rims."

Consequence: Installing incorrect tires or applying incorrect tire air pressure may increase the risk of a crash.

Remedy: Subaru will notify owners, and dealers will install a corrected label, free of charge. The recall began July 26, 2018. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WTS-78.

Tires

Subaru of America, Inc. (Subaru) is recalling certain 2018 Subaru Forester vehicles. The Certification Label may indicate the incorrect wheel size, tire size, and air pressure. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 110, "Tire Selection and Rims."

Consequence: Installing incorrect tires or applying incorrect tire air pressure may increase the risk of a crash.

Remedy: Subaru will notify owners, and dealers will install a corrected label, free of charge. The recall began July 26, 2018. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WTS-78.

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

PE19009 · Occupant Detection System (ods) Failure

Opened Aug 6, 2019 · Closed Jan 22, 2020

Status: closed (inferred from source dates) · Air Bags; Air Bags:frontal; Air Bags:frontal:passenger Side:inflator Module; Air Bags:sensor:occupant Classification

The Office of Defects Investigation (ODI) opened PE19-009 to investigate 51 complaints and additional Early Warning Report (EWR) data related to allegations of front passenger seat Occupant Detection System (ODS) malfunctions in model year (MY) 2016 through 2018 Subaru Forester vehicles. These vehicles use a capacitive type ODS, which is intended to classify the occupant of the passenger seat as either full-sized, small stature, a child seat or other object. The complaints reported the ODS failed to operate properly, the SRS (Supplemental Restraint System) warning light illuminated, and/or the ODS incorrectly suppressed (turned off) the front passenger air bag when the seat was occupied by a full-sized passenger. In a frontal crash that is sufficient to warrant deployment, a suppressed air bag may increase the risk of injury to the occupant of the seat.On August 14, 2019 ODI sent an Information Request (IR) to Subaru requesting information on the subject vehicles and MY 2014-2015 Subaru Forester vehicles.On October 3, 2019, Subaru submitted a Defect Information Report (DIR) to NHTSA describing a safety defect in the passenger-side front airbag Occupant Detection System (ODS) harness of 366,282 MY 2015-2018 Subaru Forester vehicles equipped with seat heaters.The DIR stated that over time, due to a decrease in contact pressure between the terminals in the ODS sensor mat harness, a temporarily unstable electrical connection may be possible. If the connection is temporarily unstable, the ODS may not properly determine the status of the right front seat occupant. If the ODS is unable to correctly determine the status of the front occupant, the airbag warning light may illuminate, and the front passenger airbag may deactivate even though the seat is occupied, increasing the risk of injury to the front passenger in the event of a crash.Using vehicle production data and field occurrence frequency, Subaru determined the potentially affected vehicle production range to be between January 20, 2015 ?and August 1, 2017.In addition, Subaru indicated that over 99 percent of the related MY 2015-2018 field reports with vehicles in the production range involved vehicles with seat heaters.NHTSA's analysis of complaint and warranty claim data showed 1,440 of the complaints and 11,672 of the claims involve vehicles with seat heaters that were built within the production range covered by Subaru's recall.In addition, NHTSA's analysis showed a complaint rate of 393.1 per hundred thousand vehicles for the recalled population and 89.0 for MY 2014 through 2018 vehicles that are not included in the recall. Analysis of warranty claim data found a claim rate of 3.2 percent for the recalled population and 0.3 percent for MY 2014 through 2018 vehicles that are not included in the recall.Subaru will instruct owners with Subaru Forester vehicles produced in the affected vehicle production range, to bring their vehicles to a dealer to have the sensor mat harness, inspected and replaced with a new part, including the seat cushion assembly, if necessary.Based on ODI's analysis, the actions taken by Subaru mitigate any unreasonable risk to safety posed by ODS sensor mat failures in the subject vehicles. For subject and peer vehicles outside the recall population and those equipped without seat heaters, ODI's analysis indicates that there is currently no safety-related defect trend. Given these circumstances, further use of the agency resources in this matter does not appear to be warranted. Accordingly, this investigation is closed.

Additional source detail variants (4)

Air Bags:frontal:passenger Side:inflator Module

The Office of Defects Investigation (ODI) opened PE19-009 to investigate 51 complaints and additional Early Warning Report (EWR) data related to allegations of front passenger seat Occupant Detection System (ODS) malfunctions in model year (MY) 2016 through 2018 Subaru Forester vehicles. These vehicles use a capacitive type ODS, which is intended to classify the occupant of the passenger seat as either full-sized, small stature, a child seat or other object. The complaints reported the ODS failed to operate properly, the SRS (Supplemental Restraint System) warning light illuminated, and/or the ODS incorrectly suppressed (turned off) the front passenger air bag when the seat was occupied by a full-sized passenger. In a frontal crash that is sufficient to warrant deployment, a suppressed air bag may increase the risk of injury to the occupant of the seat.On August 14, 2019 ODI sent an Information Request (IR) to Subaru requesting information on the subject vehicles and MY 2014-2015 Subaru Forester vehicles.On October 3, 2019, Subaru submitted a Defect Information Report (DIR) to NHTSA describing a safety defect in the passenger-side front airbag Occupant Detection System (ODS) harness of 366,282 MY 2015-2018 Subaru Forester vehicles equipped with seat heaters.The DIR stated that over time, due to a decrease in contact pressure between the terminals in the ODS sensor mat harness, a temporarily unstable electrical connection may be possible. If the connection is temporarily unstable, the ODS may not properly determine the status of the right front seat occupant. If the ODS is unable to correctly determine the status of the front occupant, the airbag warning light may illuminate, and the front passenger airbag may deactivate even though the seat is occupied, increasing the risk of injury to the front passenger in the event of a crash.Using vehicle production data and field occurrence frequency, Subaru determined the potentially affected vehicle production range to be between January 20, 2015 ?and August 1, 2017.In addition, Subaru indicated that over 99 percent of the related MY 2015-2018 field reports with vehicles in the production range involved vehicles with seat heaters.NHTSA's analysis of complaint and warranty claim data showed 1,440 of the complaints and 11,672 of the claims involve vehicles with seat heaters that were built within the production range covered by Subaru's recall.In addition, NHTSA's analysis showed a complaint rate of 393.1 per hundred thousand vehicles for the recalled population and 89.0 for MY 2014 through 2018 vehicles that are not included in the recall. Analysis of warranty claim data found a claim rate of 3.2 percent for the recalled population and 0.3 percent for MY 2014 through 2018 vehicles that are not included in the recall.Subaru will instruct owners with Subaru Forester vehicles produced in the affected vehicle production range, to bring their vehicles to a dealer to have the sensor mat harness, inspected and replaced with a new part, including the seat cushion assembly, if necessary.Based on ODI's analysis, the actions taken by Subaru mitigate any unreasonable risk to safety posed by ODS sensor mat failures in the subject vehicles. For subject and peer vehicles outside the recall population and those equipped without seat heaters, ODI's analysis indicates that there is currently no safety-related defect trend. Given these circumstances, further use of the agency resources in this matter does not appear to be warranted. Accordingly, this investigation is closed.

Air Bags:frontal

The Office of Defects Investigation (ODI) opened PE19-009 to investigate 51 complaints and additional Early Warning Report (EWR) data related to allegations of front passenger seat Occupant Detection System (ODS) malfunctions in model year (MY) 2016 through 2018 Subaru Forester vehicles. These vehicles use a capacitive type ODS, which is intended to classify the occupant of the passenger seat as either full-sized, small stature, a child seat or other object. The complaints reported the ODS failed to operate properly, the SRS (Supplemental Restraint System) warning light illuminated, and/or the ODS incorrectly suppressed (turned off) the front passenger air bag when the seat was occupied by a full-sized passenger. In a frontal crash that is sufficient to warrant deployment, a suppressed air bag may increase the risk of injury to the occupant of the seat.On August 14, 2019 ODI sent an Information Request (IR) to Subaru requesting information on the subject vehicles and MY 2014-2015 Subaru Forester vehicles.On October 3, 2019, Subaru submitted a Defect Information Report (DIR) to NHTSA describing a safety defect in the passenger-side front airbag Occupant Detection System (ODS) harness of 366,282 MY 2015-2018 Subaru Forester vehicles equipped with seat heaters.The DIR stated that over time, due to a decrease in contact pressure between the terminals in the ODS sensor mat harness, a temporarily unstable electrical connection may be possible. If the connection is temporarily unstable, the ODS may not properly determine the status of the right front seat occupant. If the ODS is unable to correctly determine the status of the front occupant, the airbag warning light may illuminate, and the front passenger airbag may deactivate even though the seat is occupied, increasing the risk of injury to the front passenger in the event of a crash.Using vehicle production data and field occurrence frequency, Subaru determined the potentially affected vehicle production range to be between January 20, 2015 ?and August 1, 2017.In addition, Subaru indicated that over 99 percent of the related MY 2015-2018 field reports with vehicles in the production range involved vehicles with seat heaters.NHTSA's analysis of complaint and warranty claim data showed 1,440 of the complaints and 11,672 of the claims involve vehicles with seat heaters that were built within the production range covered by Subaru's recall.In addition, NHTSA's analysis showed a complaint rate of 393.1 per hundred thousand vehicles for the recalled population and 89.0 for MY 2014 through 2018 vehicles that are not included in the recall. Analysis of warranty claim data found a claim rate of 3.2 percent for the recalled population and 0.3 percent for MY 2014 through 2018 vehicles that are not included in the recall.Subaru will instruct owners with Subaru Forester vehicles produced in the affected vehicle production range, to bring their vehicles to a dealer to have the sensor mat harness, inspected and replaced with a new part, including the seat cushion assembly, if necessary.Based on ODI's analysis, the actions taken by Subaru mitigate any unreasonable risk to safety posed by ODS sensor mat failures in the subject vehicles. For subject and peer vehicles outside the recall population and those equipped without seat heaters, ODI's analysis indicates that there is currently no safety-related defect trend. Given these circumstances, further use of the agency resources in this matter does not appear to be warranted. Accordingly, this investigation is closed.

Air Bags:sensor:occupant Classification

The Office of Defects Investigation (ODI) opened PE19-009 to investigate 51 complaints and additional Early Warning Report (EWR) data related to allegations of front passenger seat Occupant Detection System (ODS) malfunctions in model year (MY) 2016 through 2018 Subaru Forester vehicles. These vehicles use a capacitive type ODS, which is intended to classify the occupant of the passenger seat as either full-sized, small stature, a child seat or other object. The complaints reported the ODS failed to operate properly, the SRS (Supplemental Restraint System) warning light illuminated, and/or the ODS incorrectly suppressed (turned off) the front passenger air bag when the seat was occupied by a full-sized passenger. In a frontal crash that is sufficient to warrant deployment, a suppressed air bag may increase the risk of injury to the occupant of the seat.On August 14, 2019 ODI sent an Information Request (IR) to Subaru requesting information on the subject vehicles and MY 2014-2015 Subaru Forester vehicles.On October 3, 2019, Subaru submitted a Defect Information Report (DIR) to NHTSA describing a safety defect in the passenger-side front airbag Occupant Detection System (ODS) harness of 366,282 MY 2015-2018 Subaru Forester vehicles equipped with seat heaters.The DIR stated that over time, due to a decrease in contact pressure between the terminals in the ODS sensor mat harness, a temporarily unstable electrical connection may be possible. If the connection is temporarily unstable, the ODS may not properly determine the status of the right front seat occupant. If the ODS is unable to correctly determine the status of the front occupant, the airbag warning light may illuminate, and the front passenger airbag may deactivate even though the seat is occupied, increasing the risk of injury to the front passenger in the event of a crash.Using vehicle production data and field occurrence frequency, Subaru determined the potentially affected vehicle production range to be between January 20, 2015 ?and August 1, 2017.In addition, Subaru indicated that over 99 percent of the related MY 2015-2018 field reports with vehicles in the production range involved vehicles with seat heaters.NHTSA's analysis of complaint and warranty claim data showed 1,440 of the complaints and 11,672 of the claims involve vehicles with seat heaters that were built within the production range covered by Subaru's recall.In addition, NHTSA's analysis showed a complaint rate of 393.1 per hundred thousand vehicles for the recalled population and 89.0 for MY 2014 through 2018 vehicles that are not included in the recall. Analysis of warranty claim data found a claim rate of 3.2 percent for the recalled population and 0.3 percent for MY 2014 through 2018 vehicles that are not included in the recall.Subaru will instruct owners with Subaru Forester vehicles produced in the affected vehicle production range, to bring their vehicles to a dealer to have the sensor mat harness, inspected and replaced with a new part, including the seat cushion assembly, if necessary.Based on ODI's analysis, the actions taken by Subaru mitigate any unreasonable risk to safety posed by ODS sensor mat failures in the subject vehicles. For subject and peer vehicles outside the recall population and those equipped without seat heaters, ODI's analysis indicates that there is currently no safety-related defect trend. Given these circumstances, further use of the agency resources in this matter does not appear to be warranted. Accordingly, this investigation is closed.

Air Bags

The Office of Defects Investigation (ODI) opened PE19-009 to investigate 51 complaints and additional Early Warning Report (EWR) data related to allegations of front passenger seat Occupant Detection System (ODS) malfunctions in model year (MY) 2016 through 2018 Subaru Forester vehicles. These vehicles use a capacitive type ODS, which is intended to classify the occupant of the passenger seat as either full-sized, small stature, a child seat or other object. The complaints reported the ODS failed to operate properly, the SRS (Supplemental Restraint System) warning light illuminated, and/or the ODS incorrectly suppressed (turned off) the front passenger air bag when the seat was occupied by a full-sized passenger. In a frontal crash that is sufficient to warrant deployment, a suppressed air bag may increase the risk of injury to the occupant of the seat.On August 14, 2019 ODI sent an Information Request (IR) to Subaru requesting information on the subject vehicles and MY 2014-2015 Subaru Forester vehicles.On October 3, 2019, Subaru submitted a Defect Information Report (DIR) to NHTSA describing a safety defect in the passenger-side front airbag Occupant Detection System (ODS) harness of 366,282 MY 2015-2018 Subaru Forester vehicles equipped with seat heaters.The DIR stated that over time, due to a decrease in contact pressure between the terminals in the ODS sensor mat harness, a temporarily unstable electrical connection may be possible. If the connection is temporarily unstable, the ODS may not properly determine the status of the right front seat occupant. If the ODS is unable to correctly determine the status of the front occupant, the airbag warning light may illuminate, and the front passenger airbag may deactivate even though the seat is occupied, increasing the risk of injury to the front passenger in the event of a crash.Using vehicle production data and field occurrence frequency, Subaru determined the potentially affected vehicle production range to be between January 20, 2015 ?and August 1, 2017.In addition, Subaru indicated that over 99 percent of the related MY 2015-2018 field reports with vehicles in the production range involved vehicles with seat heaters.NHTSA's analysis of complaint and warranty claim data showed 1,440 of the complaints and 11,672 of the claims involve vehicles with seat heaters that were built within the production range covered by Subaru's recall.In addition, NHTSA's analysis showed a complaint rate of 393.1 per hundred thousand vehicles for the recalled population and 89.0 for MY 2014 through 2018 vehicles that are not included in the recall. Analysis of warranty claim data found a claim rate of 3.2 percent for the recalled population and 0.3 percent for MY 2014 through 2018 vehicles that are not included in the recall.Subaru will instruct owners with Subaru Forester vehicles produced in the affected vehicle production range, to bring their vehicles to a dealer to have the sensor mat harness, inspected and replaced with a new part, including the seat cushion assembly, if necessary.Based on ODI's analysis, the actions taken by Subaru mitigate any unreasonable risk to safety posed by ODS sensor mat failures in the subject vehicles. For subject and peer vehicles outside the recall population and those equipped without seat heaters, ODI's analysis indicates that there is currently no safety-related defect trend. Given these circumstances, further use of the agency resources in this matter does not appear to be warranted. Accordingly, this investigation is closed.

Go deeper into Subaru Forester problems