IllustrationBATTERY GOES DEAD AND MUST BE REPLACED IF NOT DRIVEN FOR SEVERAL DAYS. I HAVE REPLACED THE BATTERY TWICE.
2017 Subaru Forester
Owner reports · Recalls · Investigations
More warning signs than most Forester years
Owner complaints for the 2017 Subaru Forester are substantially higher than the model-year median of 131.
About this comparison →How this year compares
Owner complaints by model year
Compare all Forester years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
1270–25K
12125–50K
4450–75K
1875–100K
8100–150K
3150K+
321 reports with mileage · 265 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.
- Air Bags. Review the 164 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 106 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Visibility/wiper. Review the 104 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
40 crash reports1 fire reports25 injury reports
Electrical System complaints
106 reportsIN NOV 2019 WE LEFT THE CAR PARKED FOR A WEEK AT THE CRUISE TERMINAL WHILE STATIONED OVERSEAS IN ITALY. WE WE CAME BACK, THE CAR WOULDN'T START AND HAD JUMPED. OVER THE NEXT SEVERAL DAYS THE CAR HAD DIFFICULTY STARTING AND WE ENDED UP TAKING THE CAR TO THE SUBARU DEALERSHIP IN FROSINONE, ITALY. THE SERVICE TECHNICIAN SAID THE BA…
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IN NOV 2019 WE LEFT THE CAR PARKED FOR A WEEK AT THE CRUISE TERMINAL WHILE STATIONED OVERSEAS IN ITALY. WE WE CAME BACK, THE CAR WOULDN'T START AND HAD JUMPED. OVER THE NEXT SEVERAL DAYS THE CAR HAD DIFFICULTY STARTING AND WE ENDED UP TAKING THE CAR TO THE SUBARU DEALERSHIP IN FROSINONE, ITALY. THE SERVICE TECHNICIAN SAID THE BATTERY NEEDED TO BE REPLACED AND THAT WE WERE NOT THE FIRST FORRESTER OWNERS TO HAVE THE BATTERY REPLACED.
THE VEHICLE'S BATTERY DRAINS QUICKLY WHEN THE CAR HAS BEEN TURNED OFF, LEFT STATIONARY, AND NOT IN USE, WHICH RENDERS THE VEHICLE INOPERABLE.
DRIVING ON THE HIGHWAY AND THE DRIVER SIDE WINDOW WHICH IS ROLLED UP COMPLETELY SHATTERED. THERE ARE NO CRACKS NO INDENTATION THAT THE GLASS WOULD HAVE BROKEN AT TIME OF THE INCIDENT. THE ONLY ISSUE LEADING UP TO THIS THE WINDOW WOULD NOT ROLL UP ALL THE WAY AT TIMES. WHICH IS WHY I PERSONALLY NEVER ROLLED THE WINDOW DOWN ONCE I…
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DRIVING ON THE HIGHWAY AND THE DRIVER SIDE WINDOW WHICH IS ROLLED UP COMPLETELY SHATTERED. THERE ARE NO CRACKS NO INDENTATION THAT THE GLASS WOULD HAVE BROKEN AT TIME OF THE INCIDENT. THE ONLY ISSUE LEADING UP TO THIS THE WINDOW WOULD NOT ROLL UP ALL THE WAY AT TIMES. WHICH IS WHY I PERSONALLY NEVER ROLLED THE WINDOW DOWN ONCE I KNEW THAT WAS AN ISSUE
2017 SUBARU FORESTER BATTERY DRAINS POWER AND LEAVES CAR TOTALLY DEAD ON SEVERAL OCCASIONS SINCE PURCHASE (1/2017). BATTERY DIED IN 2018 TWICE: ONCE DURING SUMMER AND ONCE IN NOVEMBER. (ONE TIME SUBARU SERVICE ROADSIDE ASSIST WAS USED, 11/18, AND ONE TIME A FRIEND CHARGED BATTERY). THIRD TIME BATTERY DIED WAS 3/19. BROUGHT CARE …
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2017 SUBARU FORESTER BATTERY DRAINS POWER AND LEAVES CAR TOTALLY DEAD ON SEVERAL OCCASIONS SINCE PURCHASE (1/2017). BATTERY DIED IN 2018 TWICE: ONCE DURING SUMMER AND ONCE IN NOVEMBER. (ONE TIME SUBARU SERVICE ROADSIDE ASSIST WAS USED, 11/18, AND ONE TIME A FRIEND CHARGED BATTERY). THIRD TIME BATTERY DIED WAS 3/19. BROUGHT CARE TO DEALER ON 4/29/19 WITH COMPLAINT OF BATTERY DRAIN. SUBARU TESTED BATTERY AND SAID IT WAS ALL GOOD AND WOULD NOT REPLACE BATTERY. IN 1/20 BATTERY AGAIN DIED AND ON 1/29/20 TOOK CAR AGAIN TO SUBARU DEALER WITH COMPLAINT OF BATTERY DRAIN. SUBARU CHECKED THE CHARGING SYSTEM AND UPDATES. BATTERY FAILED TESTING AND WAS REPLACED UNDER WARRANTY. ON 4/22/21 BATTERY AGAIN DIED. I CALLED SUBARU SERVICE MANAGER AND ASKED TO HAVE THE MY CAR TESTED TO SEE IF THERE WAS SOMETHING IN THE CAR THAT WAS DRAINING THE BATTERY. THE MANAGER REPEATEDLY TOLD ME THAT THERE WAS PROBABLY SOMETHING LEFT ON BY ME WHILE THE CARE WAS TURNED OFF.
TL* THE CONTACT OWNS A 2017 SUBARU FORESTER. THE CONTACT STATED UPON STARTING THE VEHICLE, THE KEY OCCASIONALLY SEIZED IN THE IGNITION. THE CONTACT BELIEVED THAT THE ISSUE WAS RELATED TO THE SHIFTER SENSOR OR THE KEY SENSOR. THE CONTACT STATED NO WARNING LIGHT WAS ILLUMINATED. THE VEHICLE WAS NOT TAKEN TO BE DIAGNOSED. THE VEHIC…
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TL* THE CONTACT OWNS A 2017 SUBARU FORESTER. THE CONTACT STATED UPON STARTING THE VEHICLE, THE KEY OCCASIONALLY SEIZED IN THE IGNITION. THE CONTACT BELIEVED THAT THE ISSUE WAS RELATED TO THE SHIFTER SENSOR OR THE KEY SENSOR. THE CONTACT STATED NO WARNING LIGHT WAS ILLUMINATED. THE VEHICLE WAS NOT TAKEN TO BE DIAGNOSED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER HAD NOT BEEN INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 38,000.*DT
I'VE BEEN HAVING MORE PROBLEMS WITH TAKING MY KEY OUT OF THE IGNITION. IT START OF HAPPENING ONCE IN AWHILE AND NOW EVERYTIME I TURN OFF MY CAR AND TAKE THE KEY OUT. I SEARCH ON THE PROBLEM AND READ ALOT OF PEOPLE HAVING THIS PROBLEM. I CALLED MY BRYAN SUBARU AND THEY SAID THIS HAS BEEN HAPPENING.
THESE MODELS HAVE AMPLIFIER SOUND ISSUES THAT ROUTINELY CAUSE THE AMPLIFIER TO FAIL AND CUT THE SOUND. THIS COULD DEFINITELY CAUSE A CRASH BY DISTRACTING THE DRIVER. THE AMPS ARE EXTREMELY PRONE TO FAILING AND CAUSE EAR DEAFENING TONES, NO SOUND, CRACKLING ETC. THE PROBLEM IS EXTREME AND DEALERS HAVE NO APPARENT WAY OF RECTIFYIN…
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THESE MODELS HAVE AMPLIFIER SOUND ISSUES THAT ROUTINELY CAUSE THE AMPLIFIER TO FAIL AND CUT THE SOUND. THIS COULD DEFINITELY CAUSE A CRASH BY DISTRACTING THE DRIVER. THE AMPS ARE EXTREMELY PRONE TO FAILING AND CAUSE EAR DEAFENING TONES, NO SOUND, CRACKLING ETC. THE PROBLEM IS EXTREME AND DEALERS HAVE NO APPARENT WAY OF RECTIFYING THE ISSUE. THE INTERNET IS LOADED WITH CUSTOMERS REPORTING THIS INCLUDING MYSELF. THIS IS A MANUFACTURING AND DESIGN FLAW THAT SHOULD FIXED. NORMAL DEVICE FAILURE IS FINE BUT THIS IS OVER THE TOP. MY CAR WENT TO THE DEALER ROUGHLY 4 TIMES DUE TO THIS. MY VEHICLE PRODUCED A EAR PIERCING SOUND IN MID WINTER WITH THE WINDOWS UP AND LUCKILY I WAS ABLE TO PULL OVER TO GAS STATION WHILE ATTEMPTING TO PROTECT MY EARS AND SHUT OFF THE CAR. I KNOW THIS SOUNDS SILLY BUT THE SOUND SYSTEM IS ROUGHLY 500W AND THAT MIXED WITH THE HIGH PITCHED TONES IS EAR DAMAGING. I'M LUCKY I DID NOT CRASH. THE ONLY WAY TO OPERATE THE VEHICLE SAFELY WAS PHYSICALLY UNPLUGGING THE AMPLIFIER. PLEASE HELP.
THIS IS A 2017 FORRESTER. THE BATTERY KEEPS REPEATEDLY DYING. FOR EXAMPLE: HAD TO JUMP IN LAST NIGHT, DROVE IT FOR 45 MINUTES TO ENSURE IT SHOULD BE CHARGED BACK UP. IT WAS IN OUR GARAGE LAST NIGHT - AND TODAY, IT WON'T START AND WE CAN'T JUMP IT EITHER. AWAITING A TOW TRUCK. THIS BATTERY HAS REQUIRED A JUMP AT LEAST 5 TIMES IN …
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THIS IS A 2017 FORRESTER. THE BATTERY KEEPS REPEATEDLY DYING. FOR EXAMPLE: HAD TO JUMP IN LAST NIGHT, DROVE IT FOR 45 MINUTES TO ENSURE IT SHOULD BE CHARGED BACK UP. IT WAS IN OUR GARAGE LAST NIGHT - AND TODAY, IT WON'T START AND WE CAN'T JUMP IT EITHER. AWAITING A TOW TRUCK. THIS BATTERY HAS REQUIRED A JUMP AT LEAST 5 TIMES IN THE LAST SIX MONTHS. AND THERE IS NOTHING WRONG WITH THE BATTERY. TALKING TO MULTIPLE SUBARU OWNERS REVEALS THIS IS A COMMON ISSUE - ONE SUBARU 'SOLVES' BY PUTTING IN A NEW BATTERY (AT MY COST) AND THEN IT WILL DIE TOO.
PERIODICALLY UNABLE TO REMOVE KEY FROM THE IGNITION. HAS BEEN HAPPENING MORE FREQUENTLY OVER THE PAST 2 MONTHS. KEY IS "LOCKED" IN IGNITION, UNABLE TO COMPLETELY "TURN OFF" KEY SWITCH AND THEREFORE UNABLE TO REMOVE THE KEY. ONLY RESOLUTION HAS BEEN TO TURN THE VEHICLE BACK ON AND SHIFT THE GEARS AND REATTEMPT TO TURN CAR OFF …
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PERIODICALLY UNABLE TO REMOVE KEY FROM THE IGNITION. HAS BEEN HAPPENING MORE FREQUENTLY OVER THE PAST 2 MONTHS. KEY IS "LOCKED" IN IGNITION, UNABLE TO COMPLETELY "TURN OFF" KEY SWITCH AND THEREFORE UNABLE TO REMOVE THE KEY. ONLY RESOLUTION HAS BEEN TO TURN THE VEHICLE BACK ON AND SHIFT THE GEARS AND REATTEMPT TO TURN CAR OFF AND REMOVE KEY. THIS IS ALSO, LIKELY, AFFECTING BEING ABLE TO USE THE REMOTE START FOR MY VEHICLE.
Official recalls
119V701000 · 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.
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
1PE19009 · 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.