Which parts fail
Components named in complaints (automatic emergency braking, adaptive cruise, lane keeping, backup camera).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2019 Subaru Forester owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2019 Subaru Forester. The contact stated that while driving at 30 MPH with the adaptive cruise control engaged, the vehicle accelerated independently. The contact depressed the brake pedal; however, the engine revved loudly, the vehicle continued to accelerate and collided with the rear of a minivan. The contact was able to steer the vehicle to the side of the bridge and stopped the vehicle. The side air bags deployed after the crash. No injuries were reported. A police report was not filed. The vehicle was towed to a tow yard by the Port Authority Police. The dealer was not contacted. The vehicle was not diagnosed or repaired. The contact retained legal counsel. The manufacturer was not notified of the failure. The failure mileage was approximately 80,000.
I was on a sharp incline at idle behind a line of cars, waiting for the light to turn green and my Subaru Forrester surged forward, out of my control, and hit the back of the vehicle in front of me, causing damage to my vehicle and the one in front of me. I questioned the Subaru service center regarding it and they did not have a means to report the incident to Subaru for investigation, but offered to do a service check on the transmission of the car. Coincidentally (or of uncertain significance), I had been waiting on a back ordered part from Subaru for a malfunctioning thermal control valve that caused a check engine light to be continually displayed on my dash, disabling some of the safety features of the vehicle. They assured me that the malfunctioning part would have nothing to do with any surging problems and that it was safe to drive the car until the part could be replaced.
The contact owns a 2019 Subaru Forester. The contact stated while driving at 45 MPH the RBD warning light stated off, as well as the Lane Keep, Eyesight, ABS off, and check engine warning lights were illuminated. The contact stated he noticed that several unknown safety features became inoperable. The vehicle was taken to the dealer and the contact was informed that the gasket for the heater control valve needed to be replaced. The vehicle was not repaired because the parts were not available at the dealer. The manufacturer was contacted and a voicemail was left. The failure mileage was 47,500.
I recently bought this vehicle (used) with ~1900 miles. After 1.5 months of owning the vehicle, I suddenly had several warning lights as well as systems disabled within the vehicle. The first time this occurred I was about 2 hours into a drive, and suddenly my eyesight disabled, check engine light came on, cruise control disabled, lane departure disabled, collision warning and automatic braking disabled. After pulling over to inspect, I also realized my trunk would no longer open. I took it to a dealership who said it was due to low battery voltage-despite there being no spectacular incidents to drain the battery since I purchased the vehicle. They recharged the battery and the problem was temporarily fixed. However, once I retrieved my vehicle from the dealership the check engine light and disabled features were still prevalent. …
While on freeway at night on 9/28/22 about 8pm several dashboard lights activated including check engine, eyesight assisted safety light, steering and safety controls disabled, all at once! I pulled over and called Subaru for assistance. Called AAA. AAA suggested I drive vehicle off freeway. I went to brothers and he noted car not overheated and drive short distance home. Car manuals did not explain so many warning lights. Drove car to Roseville Subaru next day and determined that engine part had failed to leave for repair. Dealer service agent Raj would not provide any details, strange? Went online and found Subaru Service Bulletin #09-80-21 dated 2/28/22 indicating thermo valve defective causing warning lights, and to replace. I felt unsafe as on freeway at risk at night and am elderly. Subaru bulletin shows part faulty as of June7,21 per s.bulletin. Why not recalled by now? …
There have been multiple incidents where the automatic collision braking system has almost caused me to be in an accident. Although it can be turned off, you must remember to do it manually each time you turn the car on. The dealership has not offered a choice to have this dangerous feature permanently disabled. In this incident, traffic in front of me started to slow down significantly, and I started to make a lane change into the left lane which was open. In the middle of the lane change, the brakes slammed on, which meant if anyone was approaching in the left, they would have to quickly slam theirs on to not rear end me. It is honestly very scary to find yourself suddenly not in control of your vehicle when a human is better able to interpret a constantly evolving situation than a computer system. …
Eye-sight system shutdown and the car, although it was drivable, ran rough. Since there is a huge reliance on the monitors as they are designed to "forward think" to aid the driver, this was a major disruption to the driving experience. Not knowing what the disabled components affected, was a huge cause for alarm. Upon seeing the check engine light come, my wife brought the car home and I hooked up my device to read the code (P26A3 - showed up). Then I looked up that code and was directed to multiple incidents where that very same thing has become frequent on this model and a few others like it. We called the Winston-Salem NC Subaru Dealer (Flow) and they suggested we bring the Forester in for a check. Once they checked the vehicle out and confirmed the code we mentioned, they told us the "TCV" problem was found on our vehicle and they have seen others with the same problem. …
The check engine light came on and all of the eyesight components on the car were disabled as I was traveling down the highway at 70 mph (this included the adaptive cruise control, the lane departure warning, forward collision warning, etc). In addition, the engine thermostat light came on and the heater and defroster stopped working. It was cold and rainy and the window started to fog up and I was unable to clear it without a functioning defroster. This was definitely a safety issue and I had to stop driving. The car was taken to a subaru dealer today and diagnosed with faulty thermo control valve. The technician told me the car should NOT be driven in this condition due to the problem being in the engine coolant system. This is a known issue on the 2019 Forester, and other Subaru models as well, and has a TSB originally issued in Sept 2021. …
Engine lost power and was misfiring while many warning symbols appeared on the dash. There was a divider separating the lanes. The car coasted to almost to a stop, but the engine chugged enough to slowly turn left at the first opening in the divider and just barely made it off the main road. The engine stopped. I restarted it several times. The engine was misfiring barely running. The electric brake was applied on its own. The car did not respond to moving the shift selector out of park, so the car was immobilized. I put the 4-way flashers on and called AAA. There seemed to be no way for me to move it out of park or release the electronic parking brake. AAA could not respond quickly and suggested I call the police to divert traffic around my car for safety which I did. The tow truck operator was able to disengage the wheels and was able to flatbed it to the nearest repair shop. …
While I was driving on a major road, the car appeared to sense an issue and automatically started to brake. While I was a road with 55mph drivers, my car was forcing me to stop. May warning light appeared; Eyesight Issue, Check Engine, Brake and many others. I was able to disengage the crash prevention manually and continue to drive. When I took it to my mechanic, he told me all the codes went to a Technical Service Bulletin for the Thermo Control Valve. He reset the codes and told me to take it to Subaru for an under warranty repair. Once I left the mechanic, I was travelling home and the car had the same issues, again while driving on a very busy road. This time I could not disengage the system, and I struggled to get the car over to the left shoulder. It was very narrow, and not safe. I ended up having to have the car towed to the dealer. The dealer did fix the car, under warranty. …
Collision Avoidance complaints in other Forester years
Frequently asked questions
How common are collision avoidance problems on the 2019 Subaru Forester?
NHTSA has 52 complaints about the driver assistance of the 2019 Subaru Forester, 6% of the model year's 834 complaints. The component named most often is automatic emergency braking (27 mentions).
Is there a recall for 2019 Subaru Forester collision avoidance problems?
No. NHTSA lists no driver assistance recall for the 2019 Subaru Forester, though it has 3 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2019 Subaru Forester collision avoidance problems start?
Half of the complaints with a recorded mileage happened before about 14,000 miles, and 67% before 25,000 miles.
Is it dangerous?
Owners linked 4 crashes, 1 fire and 1 injury to driver assistance problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.