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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

Wheels complaints

6 reports
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Mileage unknown · Jul 6, 2025
Wheels

Wheel studs are of inferior quality, which leads to galling. Replacement of a wheel results in snapped studs. I have replaced three so far on two occasions within a week. Swapping to a spare in an emergency with broken studs will leads to accidents. As of now, I will need to drive with one broken stud to get it fixed. This …

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Wheel studs are of inferior quality, which leads to galling. Replacement of a wheel results in snapped studs. I have replaced three so far on two occasions within a week. Swapping to a spare in an emergency with broken studs will leads to accidents. As of now, I will need to drive with one broken stud to get it fixed. This is a known issue, the lugs were not over-torqued. The softness of the threads results in galling such that the threads tear out and fuse to the lug nut. How they have not issued recall/replacement/upgrades is astounding.

NHTSA ODI #11671436

77,409 miles · Dec 10, 2021
Wheels

The contact owns a 2018 Subaru Forester. The contact stated while driving approximately 55 MPH, there was an abnormal sound coming from the rear wheels. There was no warning light illuminated. The vehicle was taken to a local dealer where it was diagnosed with needing the wheel bearings replaced. The vehicle was repaired. The ma…

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The contact owns a 2018 Subaru Forester. The contact stated while driving approximately 55 MPH, there was an abnormal sound coming from the rear wheels. There was no warning light illuminated. The vehicle was taken to a local dealer where it was diagnosed with needing the wheel bearings replaced. The vehicle was repaired. The manufacturer was informed of the failure and informed the contact that the parts would be replaced free of charge. The failure mileage was approximately 77,409.

NHTSA ODI #11443399

37,000 miles · Apr 26, 2021
Wheels

THE TIRE PRESSURE SENSOR CAME ON AND EVEN AFTER THE TIRES WERE CHECKED AND CORRECT AIR WAS PUT IN THE SENSOR WOULD NOT GO OFF. WE TOOK IT TO THE DEALER AND THEY SAID IT WOULD COST $170.00 TO REPLACE ONE OF THE TIRE PRESSURE SENSORS THEY SAID WERE FAULTY. NEITHER MY WARRANTY OR EXTENDED WARRANTY WOULD COVER IT. MY HUSBAND THEN PU…

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THE TIRE PRESSURE SENSOR CAME ON AND EVEN AFTER THE TIRES WERE CHECKED AND CORRECT AIR WAS PUT IN THE SENSOR WOULD NOT GO OFF. WE TOOK IT TO THE DEALER AND THEY SAID IT WOULD COST $170.00 TO REPLACE ONE OF THE TIRE PRESSURE SENSORS THEY SAID WERE FAULTY. NEITHER MY WARRANTY OR EXTENDED WARRANTY WOULD COVER IT. MY HUSBAND THEN PURCHASED A TIRE PRESSURE SENSOR AND TOOK IT TO A LOCAL MECHANIC SHOP FOR THEM TO REPLACE IT, WHICH HAVE COST A TOTAL OF $40.00. THE MECHANIC PUT IT ON THEIR COMPUTERS AND COULDN'T IDENTIFY A BAD SENSOR, BUT SOMETHING SHOWING WRONG IN ONE OF THE COMPUTERS READING THE SENSOR. WE ARE GOING TO HAVE TO TAKE IT BACK TO THE DEALER AND TRY TO GET THIS RECTIFIED. IF IT IS A COMPUTER THEN I FEEL IT IS A SAFETY ISSUE SINCE WE CAN NOT GET AN ACCURATE READING AND THE TIRE PRESSURE LIGHT IS STAYING LIT UP ON THE DASHBOARD.

NHTSA ODI #11413908

20,000 miles · Jun 23, 2019
TiresWheels

I WAS DRIVING DOWN I-40 EAST BETWEEN MORRISONVILLE AND CARY IN NORTH CAROLINA WHERE THE SPEED LIMIT IS 65 MPH AND HAD A PLOW OUT. THERE WERE ONLY 20,000 MILES ON THE TIRES, I JUST HAD THE VEHICLE SERVICED IN MAY OF THIS YEAR. THE YOKOHAMA TIRE SHREDDED JUST LEAVING THE TREAD AND THE RIM. FORTUNATELY, THERE WERE NO INJURIES …

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I WAS DRIVING DOWN I-40 EAST BETWEEN MORRISONVILLE AND CARY IN NORTH CAROLINA WHERE THE SPEED LIMIT IS 65 MPH AND HAD A PLOW OUT. THERE WERE ONLY 20,000 MILES ON THE TIRES, I JUST HAD THE VEHICLE SERVICED IN MAY OF THIS YEAR. THE YOKOHAMA TIRE SHREDDED JUST LEAVING THE TREAD AND THE RIM. FORTUNATELY, THERE WERE NO INJURIES EXCEPT FOR THE FEAR OF MY SEVEN-YEAR-OLD GRANDSON, ON AN INTERSTATE WITH VEHICLES SPEEDING DOWN THE HIGHWAY ON A FRIDAY AFTERNOON, FOR THE WEEKEND. I HAD TO PURCHASE A NEW TIRE AND NOW I AM TOLD I WILL HAVE TO BUY 3 MORE BECAUSE THE TRUCK IS A 4 WHEEL DRIVE. THERE WAS MORE THAN A HALF A PENNY OF TREAD LEFT ON THIS TIRE AND NOW I HAVE TO DELAY A TRIP BECAUSE OF THE PROBLEMS WITH MY TIRES. I DID NOT RUN OVER A NAIL NOR DID I RUB AGAINST ANY THAT WOULD CAUSE A TEAR IN THE TIRE. THESE TIRES ARE DEFECTIVE AND AS A SUBARU OWNER AM DISAPPOINTED WITH THE PRODUCT I PURCHASED. I HAVE ENJOYED MY SUBARU AND HAVE A LONG ADMIRER OF THE VEHICLE FOR YEARS. I PLAN TO TRADE THIS VEHICLE IN THE NEXT 2 YEARS FOR ANOTHER VEHICLE AND WAS PLANNING TO RETIRE WITH THIS ONE.

NHTSA ODI #11221993

50 miles · Apr 26, 2019
SteeringWheels

SINCE I PURCHASED MY VEHICLE IN 2018, WHEN I'M DRIVING ON THE FREEWAY AT A SPEED BETWEEN 65 TO 70 MY TIRES FEEL UNBALANCED. SOMETIMES IT FEELS LIKE MY CAR IS SWERVING AND IT FEELS LIKE IT'S HARD TO CONTROL THE CAR .

NHTSA ODI #11204054

2,500 miles · Sep 7, 2018
Power TrainStructureVehicle Speed Control

TL* THE CONTACT OWNS A 2018 SUBARU FORESTER. WHILE DRIVING OVER 40 MPH, THE VEHICLE SHOOK VIOLENTLY AND VIBRATED. THE VEHICLE WAS TAKEN TO THE LOCAL DEALER (SUBURBAN SUBARU, 1821 MAPLELAWN DR, TROY, MI) WHERE IT WAS DIAGNOSED THAT THE FAILURE WAS CAUSED BY A BUILD UP OF DIRT AND DEBRIS IN THE WHEELS AND WHEEL WELLS. THE CONTACT …

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TL* THE CONTACT OWNS A 2018 SUBARU FORESTER. WHILE DRIVING OVER 40 MPH, THE VEHICLE SHOOK VIOLENTLY AND VIBRATED. THE VEHICLE WAS TAKEN TO THE LOCAL DEALER (SUBURBAN SUBARU, 1821 MAPLELAWN DR, TROY, MI) WHERE IT WAS DIAGNOSED THAT THE FAILURE WAS CAUSED BY A BUILD UP OF DIRT AND DEBRIS IN THE WHEELS AND WHEEL WELLS. THE CONTACT WAS ADVISED TO POWER WASH THE WHEELS AND WHEEL WELLS TO PREVENT THE FAILURE FROM RECURRING. IN ADDITION, THE ENGINE IDLED WHILE THE VEHICLE WAS ON A SLIGHT INCLINE. SUDDENLY, THE ENGINE BEGAN TO REV HIGH AND THE VEHICLE ERRONEOUSLY DROVE FORWARD. THE FAILURE OCCURRED AS THE DRIVER WAS GETTING BACK INTO THE VEHICLE AND THE ACCELERATOR PEDAL HAD NOT BEEN DEPRESSED. ON SEVERAL OCCASIONS, WHILE ON A SLIGHT INCLINE WITH THE ENGINE IDLING, THE VEHICLE WOULD SUDDENLY ROLL BACKWARDS ONCE THE BRAKE PEDAL WAS RELEASED. THE VEHICLE WAS TAKEN BACK TO THE DEALER WHO FOUND NO FAILURES WITH THE VEHICLE. THE MANUFACTURER WAS INFORMED OF THE FAILURES AND DID NOT ASSIST. THE VIN WAS NOT AVAILABLE. THE FAILURE MILEAGE WAS 2,500. *TT CONSUMER STATED VIOLENT VIBRATION AND SHAKING AT 45MPH OR GREATER ESPECIALLY IN WINTER MONTHS WITH SNOW AND MUD BUILD UP. AUTOMATIC BRAKES SLAM FREQUENTLY WHEN IN REVERSE. WHILE AT A STOP SIGN, WHEN CAR IS IN DRIVE ON AN INCLINE ENGINE STARTS REVVING. VEHICLE WENT BACKWARDS WHILE FOOT WAS ON THE BRAKE. UPDATED 11/19/18*JB

NHTSA ODI #11128069

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.

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