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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

Unknown Or Other complaints

82 reports
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Mileage unknown · Jun 2, 2021
Unknown Or Other

The windshield, after being in a garage for A whole weekend cracked. There was no impact, it just split up the middle. This issue has had a class action lawsuit brought up against Subaru, and is something that sadly happened to me to. I am now stuck with an almost 1000 bill. There were no warnings or causes. It happened with no …

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The windshield, after being in a garage for A whole weekend cracked. There was no impact, it just split up the middle. This issue has had a class action lawsuit brought up against Subaru, and is something that sadly happened to me to. I am now stuck with an almost 1000 bill. There were no warnings or causes. It happened with no indication this would occur.

NHTSA ODI #11419290

2,000 miles · Apr 14, 2021
Power TrainSuspensionUnknown Or Other

I HAVE AC PROBLEMS, REFRIGERANT LEAK, ACTUATOR PROBLEMS, BAD COMPRESSOR. I HAVE SERIOUS CVT SURGING AND SUSPENSION PROBLEMS THAT MAKE VEHICLE UNSAFE TO DRIVE. THE CAR LITERALLY BEGINS TO HOP LIKE YOU ARE STOMPING THE GAS AND BREAKS BACK AND FORTH AND CAN EASILY MAKE YOU LOSE CONTROL. IT SOMETIMES DOES NOTHING WHEN PRESSING ACC…

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I HAVE AC PROBLEMS, REFRIGERANT LEAK, ACTUATOR PROBLEMS, BAD COMPRESSOR. I HAVE SERIOUS CVT SURGING AND SUSPENSION PROBLEMS THAT MAKE VEHICLE UNSAFE TO DRIVE. THE CAR LITERALLY BEGINS TO HOP LIKE YOU ARE STOMPING THE GAS AND BREAKS BACK AND FORTH AND CAN EASILY MAKE YOU LOSE CONTROL. IT SOMETIMES DOES NOTHING WHEN PRESSING ACCELERATOR FOR WAY TOO LONG MAKING IT DANGEROUS PULLING INTO TRAFFIC. WINDOWS ROLL DOWN WITHOUT PRESSING BUTTON AND WON'T ROLL BACK UP UNLESS YOU ROLL THEM ALL THE WAY DOWN FIRST AND USUALLY IT JUST ROLLS RIGHT BACK DOWN AGAIN. AWEFUL TRYING TO DRIVE WHILE FIGHTING WITH WINDOWS THAT WON'T STAY UP. SUSPENSION IS SO DESTROYED FROM THE SURGING AND HOPPING THAT IT CANNOT BE ALIGNED. THE VEHICLE DESTROYS TIRES RAPIDLY AND UNEVENLY. GAS MPG IS TERRIBLE, ESPECIALLY IF YOU RUN AC. STEERING ASSIST IS DANGEROUS AND WILL SOMETIMES JERK WHEEL AWAY FOR NO REASON CAUSING YOU TO SCRAPE CURBS AND NEARLY HIT A POLE ONCE.. BREAKING ASSIST IS ALSO DANGEROUS AS IT WILL SLAM BREAKS FOR NO REASON. LANE DEPARTURE BEEPS A LOT FOR NO REASON. WIPERS ARE GARBAGE. WINDSHIELD GLASS IS TOO SOFT AND ALL DUST SCRATCHES IT MAKING VISIBILITY POOR THE TRUNK OFTEN WILL NOT OPEN NO MATTER IF YOU PUSH BUTTON ON KEY, INSIDE CAR OR ON TRUNK. THE DOOR SEALS FELL OFF, CHEAP CLIPS FALL OFF THAT ARE SUPPOSED TO HOLD IMPORTANT THINGS IN PLACE, GLOVE BOX SHOCK BROKE. I'M SURE THERE ARE OTHER ISSUES TOO. SUSPENSION IS A BIG ISSUE HOWEVER, COMPLETELY SHOT FROM SURGING. FAR TOO EXPENSIVE TO GET WHOLE NEW SUSPENSION. DEALERSHIP IGNORED ALL COMPLAINTS AND PURGED ALL RECORDS OF VISITS SO I COULDN'T FILE LEMON LAW. SUBARU IS VERY DISHONEST. SO MANY THINGS NEED RECALL THAT IT IS A LEMON PURE AND SIMPLE.

NHTSA ODI #11408079

29,750 miles · Apr 12, 2021
Unknown Or OtherVisibility/wiper

WHILE LEAVING FOR WORK THIS MORNING, I NOTICED A CRACK ON MY WINDSHIELD ON THE LOWER PASSENGER SIDE, RIGHT ABOVE THE FRONT SPEAKER. IT APPEARS THE CRACK IS ONLY ON THE INSIDE AND IS NOT CAUSED BY ANY OUTSIDE DAMAGE OR FORCE.

NHTSA ODI #11407554

Mileage unknown · Mar 27, 2021
Unknown Or Other

THE WINDSHIELD IS PITTED AND CRACKED I FIRST NOTICED THE PITTING IN 03/2018 AND IT IS CONTINUALLY GETTING WORSE. THE WINDSHIELD NOW NEEDS TO BE REPLACED AS IT HAS A HUGE CRACK IN IT!

NHTSA ODI #11405140

50 miles · Mar 20, 2021
SteeringUnknown Or Other

VEHICLE HAS 50K MILES. WINDOW MOTOR ON DRIVER WINDOW REPLACED TWICE. KEEPS FAILING. ALSO UNEVEN TREAD WEAR ON BRAND NEW TIRES INDICATING SOMETHING WRONG WITH VEHICLE.

NHTSA ODI #11404030

24,000 miles · Mar 8, 2021
Unknown Or Other

WHILE IN MOTION ON A HIGHWAY, OUR WINDSHIELD HAS CRACKED TWICE IN UNDER 24,000 MILES. THESE WERE TWO SEPARATE WINDSHIELDS - THE ORIGINAL AND THE REPLACEMENT FROM A SUBARU DEALERSHIP. WE CAN ASSUME A TINY ROCK HIT THE WINDSHIELD SINCE WE WERE ON A HIGHWAY - HOWEVER, IT APPEARS THAT IT DOES NOT TAKE MUCH FOR THE WINDSHIELD TO CRAC…

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WHILE IN MOTION ON A HIGHWAY, OUR WINDSHIELD HAS CRACKED TWICE IN UNDER 24,000 MILES. THESE WERE TWO SEPARATE WINDSHIELDS - THE ORIGINAL AND THE REPLACEMENT FROM A SUBARU DEALERSHIP. WE CAN ASSUME A TINY ROCK HIT THE WINDSHIELD SINCE WE WERE ON A HIGHWAY - HOWEVER, IT APPEARS THAT IT DOES NOT TAKE MUCH FOR THE WINDSHIELD TO CRACK. THIS SAME SCENARIO HAS HAPPENED TO OUR WINDSHIELD TWICE. OUR CAR WAS NOT FOLLOWING CLOSELY BEHIND ANOTHER CAR OR LARGE VEHICLE THAT COULD HAVE BEEN KICKING UP DEBRIS.

NHTSA ODI #11399729

18,000 miles · Feb 16, 2021
SuspensionUnknown Or Other

FRONT WHEEL DRIVE BARRING'S LT SIDE, WORN OUT UNDER 19,000 MILES, REAR GATE LIFT MOTOR REPLACED TWICE-IN MOTION! LT BACK INTERIOR FRAME POPPING OUT!

NHTSA ODI #11396525

27,000 miles · Feb 13, 2021
Unknown Or Other

SUBARU FORESTER BATTERY DIES REPEATEDLY AFTER SITTING FOR VERY SHORT PERIODS OF TIME. THREE TIMES WITHIN THE FIRST YEAR OF OWNING THE VEHICLE (BOUGHT IT NEW). FIRST TIME, DEALER TOLD ME IT MUST BE MY FAULT BECAUSE IT TESTED FINE, 2ND TIME THEY SAID IT WAS AN ISSUE WITH A START STOP FUSE (CAR DOESN'T HAVE THAT FEATURE) DRAINING T…

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SUBARU FORESTER BATTERY DIES REPEATEDLY AFTER SITTING FOR VERY SHORT PERIODS OF TIME. THREE TIMES WITHIN THE FIRST YEAR OF OWNING THE VEHICLE (BOUGHT IT NEW). FIRST TIME, DEALER TOLD ME IT MUST BE MY FAULT BECAUSE IT TESTED FINE, 2ND TIME THEY SAID IT WAS AN ISSUE WITH A START STOP FUSE (CAR DOESN'T HAVE THAT FEATURE) DRAINING THE BATTERY, 3RD TIME THEY SAID IT WAS STARLINK ELECTRICAL ISSUE DRAINING THE BATTERY. I CANNOT RECALL IF THEY REPLACED THE BATTERY EACH TIME, BUT I KNOW I WAS TOLD THAT IT WAS REPLACED AT LEAST TWICE. WORKED FINE FOR ANOTHER YEAR AFTER THE STARLINK SOLUTION AND HAS AGAIN BEEN ACTING UP. CAR DOESN'T WANT TO START AND LEFT ME STRANDED IN A REMOTE MOUNTAIN LOCATION IN THE DEAD OF WINTER.

NHTSA ODI #11396103

Mileage unknown · Jan 28, 2021
Unknown Or Other

THE WINDSHIELD WAS SO PITTED WHEN I BOUGHT IT THAT I HAD IT REPLACED WITHIN A FEW MONTHS OF PURCHASING THE VEHICLE. VISIBILITY WAS LIMITED ESPECIALLY WHEN THE SUN HIT IT.

NHTSA ODI #11390490

Mileage unknown · Jan 16, 2021
Unknown Or Other

A NUMBER OF TINY CHIPS DEVELOPED ON THE FRONT WINDSHIELD. COUNTED AT LEAST 6 SPOTS. THE CAR WAS MOSTLY PARKED ON A CITY STREET WHEN THE CHIPS SEEM TO HAVE OCCURRED. HAVE DRIVEN LESS THAN 100 MILES ON HIGHWAYS AND LESS THAN 20 MILES IN THE CITY.

NHTSA ODI #11388487

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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