2018 Subaru Forester

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.

Approximately a half dozen times since I bought my 2018 Subaru Forester Premium new in December of 2017 it has exhibited unintended acceleration, usually after I start it or travelling slowly, as when doing parking maneuvers. When this happens the car will suddenly lurch forward and the engine will roar, even when my right foot is firmly on the brake and no foot on the gas pedal (I use my right foot only on the pedals). The only way I've found to stop this problem is to turn the car off. Upon restarting the car, it drives normally again until this problem reoccurs, which may be weeks or months later. I've examined the possible reasons that this is happening and have eliminated the possibility of the car mat or pressing the wrong pedal or both pedals at the same time. I've tried to press both pedals at the same time on purpose with the car off to check if this is possible, and am unable to press both pedals without my foot slipping between the pedals. I've also experienced the power steering warning light illuminate a few times upon starting the car, upon which the car has no power steering. Turning the car off and then back on again has solved that problem.

NHTSA ID

11776392

Incident

Nov 6, 2026

The air conditioning system began blowing warm or hot air. Determined that the compressor failed and required replacement. Vehicle was purchased new from the dealership in Oct. 2018, with this issue arising at approximately 50k miles. This is apparently a common and known issue for 2018 Subaru Forester vehicles. This is a hazard in hot weather such as I am in right now with outside temperatures at 90F or more.

NHTSA ID

11768616

Incident

Oct 2, 2026

My SRS Airbag System warning light illuminated on the dashboard while driving. Subaru dealership service department informed me that the passenger airbag system occupant detection technology failed and the airbag function was disabled. The repair required replacement of the entire seat bottom.

NHTSA ID

11768494

Incident

Sep 30, 2026

The contact owns a 2018 Subaru Forester. The contact stated that while driving, the passenger's side air bag warning light illuminated. The vehicle was taken to the dealer where it was diagnosed with ODS failure. The contact was informed that the ODS needed to be replaced. The manufacturer had covered the cost for the diagnostic test. The contact referenced NHTSA Campaign Number: 19V701000 (Air Bags); however, the VIN was not associated with the recall. The manufacturer was contacted by phone and made aware of the failure. The manufacturer offered to help with the cost of the repair. The failure mileage was approximately 100.

NHTSA ID

11768155

Incident

Sep 18, 2018

Mileage

100 mi

The front passenger airbag of my Subaru Forester 2018 is deactivated, I brought my car to the Subaru dealer in white Plains, NY to check because I found out that there was a recall for malfunction of the airbag and I was told that I have to pay for it since the repair was already done, then, I have to pay for the repair ( see the estimated bill) I contacted the Subaru headquarters because I considered unfair, they air bag is still inactive and I am at risk of having an accident. Today I received a message from the DMV to renew my registration and I saw that my car is in a recall for the air bag (NTSA Campaign 21V587000). Please help me to contacting the manufacturer to accept to rereplace the passenger airbag.

NHTSA ID

11766036

Incident

Oct 1, 2025

On July 31, 2026, I was driving with my daughter when the a/c compressor clutch seized up and experienced a catastrophic compressor failure that also blew out the expansion valve o-rings. The failure led to a total loss of engine power and control of the vehicle. The car would not start back up because the clutch was seized and the pulleys wouldn’t turn. Luckily, I was in a residential neighborhood and cars were able to safely go around me. If this had happened on a highway or faster speed limit zone there could have been fatalities. There were tons of lights all over the dash as I attempted to restart the engine. The engine wouldn’t turn over until I gave it plenty of pedal pressure. This extra power to the engine during ignition freed the seized clutch and I was able to drive home without air conditioning. I parked outside in the driveway due to a strong odor of burning metal (probably clutch) when we arrived home. Several years earlier I had completed a Subaru recall WRB-21 for the condenser, and I believe this is directly related to the failure. Subaru of America denied my request for goodwill repair claim under claim 260810-210789 and won’t recognize this as a serious safety issue. There are hundreds of thousands of views on YouTube videos of complaints that the a/c compressor fails prematurely and SOA has only acknowledged the condenser failure. My vehicle has less than 70,000 miles and it has been verified by the dealership (North Park Subaru Dominion) as a “faulty” compressor and leaking expansion valve o-rings. I have requested the dealership to use tracer dye and ensure that metal shavings and debris are not in the closed loop system before replacing the a/c compressor and o-rings which will cause another failure of the entire system. I will also request that they save the compressor for inspection.

NHTSA ID

11764982

Incident

Jul 31, 2026

The passenger Occupant Detection System (ODS), including the occupant detection sensor system in the passenger seat, has malfunctioned. The SRS/airbag warning light is illuminated. The vehicle produced diagnostic trouble codes B1650 and B1760. The affected passenger seat and components remain installed in the vehicle and are available for inspection upon request. As the SRS light is on, none of the airbags may not deploy as intended in a crash because the occupant detection system is incorrectly classifying an adult passenger as “Empty or CRS.” With an adult seated normally and wearing the seat belt, the system continues to display “PASS AIR BAG OFF.” This could prevent or improperly control deployment of vehicle airbag during a crash, increasing the risk of injury. Yes. The problem was confirmed by a Subaru dealership. The dealership diagnosed the passenger Occupant Detection System/SRS issue and confirmed that the passenger occupant detection system is malfunctioning. The vehicle produced diagnostic trouble codes B1650 and B1760. The vehicle has been inspected/serviced previously by a Subaru dealer in connection with the passenger occupant detection system recall. The recall repair was completed before I purchased the vehicle. Subaru of America has also been contacted regarding the current SRS issue and opened a case. The SRS/airbag warning light illuminated on the instrument cluster. The passenger airbag indicator also displays “PASS AIR BAG OFF” when an adult is seated normally in the passenger seat. The SRS warning light appeared after I had purchased the vehicle. A subsequent diagnostic scan reported codes B1650 and B1760. The vehicle had previously received the applicable passenger occupant detection system recall repair before I purchased it.

NHTSA ID

11760470

Incident

Aug 28, 2026

Airbag light came on - dealership confirmed it is an occupant detection system failure - wiring harness has gone bad. No history of moisture exposure, which would leave faulty part as the problem. Similar to Subaru recall from 2020 on heated passenger seats - this vehicle was not included in that recall, but is in the same year range and has heated seats. Entire bottom piece of front seat must be replaced, including wiring harness and seat mounting bracket; otherwise air bags may not deploy in case of accident. Quick online search reveals this problem has been prevalent in other 2018 Foresters not included in the original recall.

NHTSA ID

11757637

Incident

Jun 21, 2026

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