IllustrationCAR ACCELERATES QUICKLY AND LURCHES FORWARD WHEN SLIGHTLY TOUCHING THE GAS PEDAL. THIS HAPPENS AT ALL TIMES FROM START OF CAR AND DURING GENERAL DRIVING CONDITIONS.
2016 Subaru Forester
Owner reports · Recalls · Investigations
More warning signs than most Forester years
Owner complaints for the 2016 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
690–25K
7825–50K
4350–75K
1175–100K
9100–150K
7150K+
217 reports with mileage · 196 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 99 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 93 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine. Review the 60 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
39 crash reports3 fire reports14 injury reports
Engine complaints
60 reportsWITH THE CAR COMPLETELY WARMED UP, EITHER A HOT DAY OR A COLD DAY, DOESN'T MATTER, THE CAR WILL NOT ACCELERATE FOR A COUPLE SECONDS WHEN ENTERING TRAFFIC AFTER HAVING PARKED FOR A FEW MINUTES. IN OTHER WORDS, AFTER MAKING A STOP SOMEWHERE AND SHUTTING THE ENGINE OFF, AND THEN STARTING IT UP AGAIN AND TRAVELING A BLOCK OR SO, SU…
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WITH THE CAR COMPLETELY WARMED UP, EITHER A HOT DAY OR A COLD DAY, DOESN'T MATTER, THE CAR WILL NOT ACCELERATE FOR A COUPLE SECONDS WHEN ENTERING TRAFFIC AFTER HAVING PARKED FOR A FEW MINUTES. IN OTHER WORDS, AFTER MAKING A STOP SOMEWHERE AND SHUTTING THE ENGINE OFF, AND THEN STARTING IT UP AGAIN AND TRAVELING A BLOCK OR SO, SUDDENLY THE CAR WILL NOT ACCELERATE. YOU MAY BE ENTERING TRAFFIC FLOW AND NEED TO SPEED UP, AND IT WON'T GO. THE DEALER STONEWALLS BY SAYING THE ISSUE CANNOT BE DUPLICATED AND THEREFORE IT IS NOT THEIR PROBLEM.
I'VE HAD THIS CAR FOR 1.5 YEARS AND IT'S ALREADY STALLED TWICE TIMES. BOTH TIMES I WAS DRIVING ON THE HIGHWAY AND WITHOUT ANY WARNING MY CAR JUST STARTED TO RAPIDLY DECREASE SPEED. BOTH TIMES, I MY GAS METER SAID THAT I HAD OVER 50 MILES OF GAS LEFT IN MY CAR. ITS ABSOLUTELY TERRIFYING BECAUSE WHEN THE CAR SHUTS OFF, I HAVE ABOU…
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I'VE HAD THIS CAR FOR 1.5 YEARS AND IT'S ALREADY STALLED TWICE TIMES. BOTH TIMES I WAS DRIVING ON THE HIGHWAY AND WITHOUT ANY WARNING MY CAR JUST STARTED TO RAPIDLY DECREASE SPEED. BOTH TIMES, I MY GAS METER SAID THAT I HAD OVER 50 MILES OF GAS LEFT IN MY CAR. ITS ABSOLUTELY TERRIFYING BECAUSE WHEN THE CAR SHUTS OFF, I HAVE ABOUT TWO MINUTE TO GET TO THE SHOULDER BEFORE IT'S COMPLETELY DEAD.
TL* THE CONTACT OWNS A 2016 SUBARU FORESTER. THE CONTACT STATED THAT WHEN THE BRAKE PEDAL WAS DEPRESSED, THE VEHICLE UNEXPECTEDLY SURGED FORWARD. THE CONTACT STATED THAT THE ENGINE ACCELERATED VIOLENTLY. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS NOT DIAGNOSED OR REPAIRED THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. TH…
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TL* THE CONTACT OWNS A 2016 SUBARU FORESTER. THE CONTACT STATED THAT WHEN THE BRAKE PEDAL WAS DEPRESSED, THE VEHICLE UNEXPECTEDLY SURGED FORWARD. THE CONTACT STATED THAT THE ENGINE ACCELERATED VIOLENTLY. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS NOT DIAGNOSED OR REPAIRED THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 20,000. UPDATED 05/02/17*LJ UPDATED 11/17/2017*JS
CAR HAS 15000 MILES-USES ONE QUART OF OIL EVERY 2000 MILES-THIS MUCH OIL CONSUMPTION INDICATES A SERIOUS PROBLEM. CAR WAS PURCHASED ON 03/05/2016.
WE GOT OUR 2016 SUBARU FORESTER PREMIUM 2.5I FROM BAY RIDGE DEALER IN BROOKLYN ON JUNE 7,2016.
TL* THE CONTACT OWNS A 2016 SUBARU FORESTER. WHILE DRIVING VARIOUS SPEEDS AND ATTEMPTING TO ACCELERATE, THE ENGINE STALLED, MISFIRED, AND HESITATED WITHOUT WARNING. THE FAILURE WAS PERSISTENT. THE VEHICLE WAS TAKEN TO A DEALER, BUT THE CAUSE OF THE FAILURE COULD NOT BE DETERMINED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER W…
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TL* THE CONTACT OWNS A 2016 SUBARU FORESTER. WHILE DRIVING VARIOUS SPEEDS AND ATTEMPTING TO ACCELERATE, THE ENGINE STALLED, MISFIRED, AND HESITATED WITHOUT WARNING. THE FAILURE WAS PERSISTENT. THE VEHICLE WAS TAKEN TO A DEALER, BUT THE CAUSE OF THE FAILURE COULD NOT BE DETERMINED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 8,000.
NON-TURBO MODEL STALLS IN TRAFFIC WITHOUT WARNING. FIRST AIR CONDITIONER SHUTS OFF, ALONG WITH ELECTRICAL, THEN ENGINE STALLS. NOTHING UNUSUAL PRIOR TO SHUTTING OFF. VEHICLE BECOMES NEARLY IMPOSSIBLE TO CONTROL WITH LIMITED BRAKING AND STEERING. CAR WILL NOT IMMEDIATELY RE-START. THIS HAS OCCURRED SIX TIMES SINCE NEW; DEALER HAS…
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NON-TURBO MODEL STALLS IN TRAFFIC WITHOUT WARNING. FIRST AIR CONDITIONER SHUTS OFF, ALONG WITH ELECTRICAL, THEN ENGINE STALLS. NOTHING UNUSUAL PRIOR TO SHUTTING OFF. VEHICLE BECOMES NEARLY IMPOSSIBLE TO CONTROL WITH LIMITED BRAKING AND STEERING. CAR WILL NOT IMMEDIATELY RE-START. THIS HAS OCCURRED SIX TIMES SINCE NEW; DEALER HAS NOT FIXED PROBLEM, BUT HAS SEEN VIDEO OF THE CAR STALLING IN TRAFFIC THAT MY WIFE TOOK WHILE I WAS DRIVING. VEHICLE WAS IN GEAR, MOVING AT LOW TO MODERATE SPEED EACH TIME, WITH AC OPERATING AND NO OTHER ACCESSORIES OR UNUSUAL SITUATIONS.
THREE TIMES OVER THE PAST 2 WEEKS, MY VEHICLE HAS STALLED AT HIGHWAY SPEEDS. ALL THREE TIMES THE INCIDENT OCCURRED WHEN I WAS TRAVELING WITH 1/4 OR LESS OF GAS (BUT THESE INCIDENTS DID NOT OCCUR DUE TO HAVING RUN OUT OF GAS). ALL THREE TIMES I WAS ATTEMPTING TO ACCELERATE OR DRIVE UPHILL. THE VEHICLE STALLED ALL TIMES AT AROU…
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THREE TIMES OVER THE PAST 2 WEEKS, MY VEHICLE HAS STALLED AT HIGHWAY SPEEDS. ALL THREE TIMES THE INCIDENT OCCURRED WHEN I WAS TRAVELING WITH 1/4 OR LESS OF GAS (BUT THESE INCIDENTS DID NOT OCCUR DUE TO HAVING RUN OUT OF GAS). ALL THREE TIMES I WAS ATTEMPTING TO ACCELERATE OR DRIVE UPHILL. THE VEHICLE STALLED ALL TIMES AT AROUND 65-75 MPH OF SPEED, CAUSING ME GREAT CONCERN WHEN I HAD TO QUICKLY PULL OVER ON HEAVILY TRAVELED HIGHWAYS SUCH AS CT ROUTE 84 AND VT ROUTE 91. I BROUGHT MY VEHICLE TO BERTERA SUBARU IN HARTFORD, CT, WHERE I HAD PURCHASED IT, AND WAS TOLD THEY WERE UNABLE TO FIX MY ISSUE UNTIL IT HAPPENED MORE CONSISTENTLY. I MENTIONED RECALL WTA-62 AND WAS TOLD IT DOES NOT APPLY TO MY VEHICLE. RECALL WQZ-61 WAS PERFORMED ON MY VEHICLE.
MY SISTER AND I BOUGHT THIS CAR ON MAR. 25, 2016. ON APRIL 6, 2016 THE CAR STALLED ON HER TWICE. SHE WAS COMING OUT OF A STORE PARKING LOT, AND CROSSED THE INTERSECTION TURNING LEFT AND THE CAR STALLED IN THE MIDDLE OF THE ROAD IN THE INTERSECTION ON THE BROKEN YELLOW LINES. SHE HAD TO PUT HER CAR ON 'PARK' AND RESTART. THE …
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MY SISTER AND I BOUGHT THIS CAR ON MAR. 25, 2016. ON APRIL 6, 2016 THE CAR STALLED ON HER TWICE. SHE WAS COMING OUT OF A STORE PARKING LOT, AND CROSSED THE INTERSECTION TURNING LEFT AND THE CAR STALLED IN THE MIDDLE OF THE ROAD IN THE INTERSECTION ON THE BROKEN YELLOW LINES. SHE HAD TO PUT HER CAR ON 'PARK' AND RESTART. THE SECOND INCIDENT HAPPENED THE SAME WAY, COMING OUT OF A PARKING LOT BUT DIDN'T REACH THE CENTER OF THE STREET, AND STALLED ON THE FAST LANE OF ONCOMING TRAFFIC. SHE DID THE SAME, PUT THE CAR IN 'PARK' AND RESTARTED. I THEN TOOK HER CAR TO THE DEALER ON THURSDAY NIGHT 4/7/16 AND LEFT THE CAR THERE WITH 382 MILES ON IT. THE SERVICE ADVISOR DID TELL ME THAT THEY DID HAVE ANOTHER INCIDENT SIMILAR....SOME PEOPLE WERE TEST DRIVING A FORRESTER AND AND IT HAD TO BE TOWED BACK TO THE DEALER, AND THEY FOUND THAT A FUEL LINE WAS CRINKLED. SHE SAID, I HOPE THIS WASN'T THE CAR. THEY DID CHECK THE CAR WITH A LAPTOP, BUT DROVE IT FOR ONLY 1 OR 1-1/2 MILES AND FOUND NOTHING WRONG. I BROUGHT THE CAR HOME AND HAVE 385 MILES ON IT NOW. MY CONCERN IS, THAT I DON'T WANT MY SISTER TO BE IN AN UNSAFE SITUATION, SHE JUST RECENT LOST HER HUSBAND OF 57 YEARS, AND I CONVINCED HER TO TRADE IN HER MINIVAN FOR A SMALLER SAFER VEHICLE.
Official recalls
319V701000 · 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.
19V149000 · Exterior Lighting:brake Lights:switch
Feb 28, 2019
Subaru of America, Inc. (Subaru) is recalling certain 2014-2016 Forester, 2008-2016 Impreza sedans, 2012-2016 Impreza station wagons, 2008-2014 WRX sedans (including STI), and 2013-2017 Crosstrek vehicles. Exposure to certain contaminants may cause the brake light switch to malfunction, preventing the brake lights from illuminating and also preventing keyless ignition vehicles from starting and CVT/automatic transmissions from being able to be shifted out of Park.
Consequence & remedy
Consequence: Brake lights that do not illuminate properly will not alert other drivers that the vehicle is slowing or stopping, increasing the risk of crash.
Remedy: Subaru will notify owners, and dealers will replace the brake light switch, free of charge. The recall began April 15, 2019. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WUE-90.
16V162000 · Engine And Engine Cooling:engine:gasoline:turbo/supercharger
Mar 21, 2016
Subaru of America, Inc. (Subaru) is recalling certain model year 2015-2016 WRX vehicles manufactured April 10, 2015, to October 21, 2015, and Forester 2.0XT vehicles manufactured April 10, 2015, to October 20, 2015. The turbocharger air intake duct may crack and possibly result in an engine stall.
Consequence & remedy
Consequence: An engine stall increases the risk of a crash.
Remedy: Subaru will notify owners, and dealers will inspect the turbocharger air intake duct, and replace it as necessary, free of charge, depending on the lot number found on the duct. The recall began April 2016. Owners may contact Subaru customer service at 1-800-782-2783. Subaru's number for this recall is WTA-62.
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.