While driving on a highway outside Milford, CT my vehicle is check engine light suddenly illuminated. I had a sudden loss of power, no heat, and the engine temperature was unable to read. Engine temperature was not accurately reporting and showed it as being cold as indicated by blue light warmup light. My eyesight, pre-collision system, and sport mode was disabled due to the engine light being illuminated. The vehicle was seen at a Subaru dealer, who diagnosed the issue to be the thermo control valve. Dealership informed me that it was unsafe to drive and I risk complete engine failure, overheating, and or fire if I continue to operate without required repair. As a result, I was stranded overnight, three hours away from home. Repair was completed on [XXX] at cost of $1830. I learned at the dealership that this is a known issue, in 2021 Subaru replace the plastic components of this part with aluminum due to similar issues experience by many customers. Customers are reporting vehicles going into -??limp mode-?? and even engine damage. I learn that there is a class action lawsuit regarding the same issue, which can be reviewed here: [XXX] Please help to recall vehicles and push Subaru to repair/refund. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Templeton, MA, USA

Check engine light came on and gave code P26A6 which came back the thermal control valve which is a well known issue with this make and model vehicle.

- Tinley Park, IL, USA

Power Control Valve malfunctioning at 26,000 miles. Causing all safety features (auto braking & lane departure) to be shut off.

- Camarillo, CA, USA

Defective/failed thermal control valve. Valve failed while I was driving, resulting in safety systems (e.g., lane keep assist, pre-collision braking). Looking this up, this is a known issue to Subaru.

- Gig Harbor, WA, USA

When driving, ALL lights on the dash went on and vehicle safety features did not work- no cruise control, automatic breaking, automatic headlight adjustments, etc. We were over 500 miles from home and had the oil changed but it did not fix the problem. Had $72,000 miles on it, 4 years old. We had to drive home that distance to get it repaired over a 2-3 day period. No safety features were enabled as we drove. Thermo Control Valve was deemed faulty and replaced. Seeing after the fact that the TSB was issued without any VIN numbers: https://static.nhtsa.gov/odi/tsbs/2023/MC-10237281-0001.pdf, I believe it should include our VIN number and be recalled and the replacement paid for.

- Doylestown, PA, USA

My wife was driving her 2019 Subaru Forester (purchased new) and the Eyesight disabled and the check engine light came on. The car was still running, but not as it normally would. It had less power but would still maintain the speed limit. At home the car idled differently, like it was running too rich or too lean. The exhaust also smelled funny.

- Fort Valley, VA, USA

Was driving in the right-hand lane on the interstate with the cruise control set, went to change lanes as I was approaching a slower moving semi truck going up an incline. Cruise control deactivated with no inputs from myself. Vehicle began to decelerate. Looked at instrument cluster, the Check Engine Light was on along with Eye Sight Off symbol. Additional symbols for forward collision avoidance and rear active braking were also on. No warning signs were present prior to the cruise control turning off. The unexpected loss of power increases the risk of collision while traveling on the highway. Vehicle was taken a Subaru dealer, diagnosed with code P2682, Coolant Bypass valve performance, with a recommendation to replace the coolant bypass valve.

- St Peters, MO, USA

On June 20, 2023, the "check engine" light came on my 2019 Subaru Forester and "Eyesight" flashed on my dashboard as disabled. I immediately went to my mechanic and he ran a diagnostic which showed the following: "P26A3 - Engine Coolant Bypass Valve." My car has 75,000 miles and is out of warranty for the powertrain. In reviewing online forums, this problem is a recurring one that is affecting many Subaru owners. The cost is $1,200 to $1,500 to fix. I believe this should be a recall issue. Other drivers have noted sudden engine shutoff but I have not experienced that yet. The car is currently in the shop. Subaru knows this is a problem.

- Fairfax, VA, USA

On January 1, my wife was returning home from a grocery run when our 2019 Forester-??s dashboard suddenly lit up like a Christmas tree--Check Engine, EyeSight, Anti-Lock Brakes, Anti-Skid, and blue Temperature lights all came on simultaneously. The Forester did not lose any appreciable power but the heater stopped working and was only blowing cold air. My wife was only a couple of miles away and brought it straight home. I checked under the hood but had no idea what was going on, so I drove it over to my local Autozone for a scan, and it came back with the 'P26A3' Code, as well as 'P3300, ' and 'P2100' (Throttle Control Motor-Circuit Open). I brought our Forester back home, did some online research, and discovered that this code typically indicates a thermal control valve assembly (TCVA) failure. Our vehicle's 60,000-mile powertrain warranty had just expired but fortunately, we live near a reputable repair shop which was able to take the Forester in the next day, confirm the codes and TVCA failure, and then make the repair. Further research revealed that this appears to be a widespread quality control problem and typically costs affected owners between $1,100 and $2,000 to fix beyond the expired standard 35,000 mile /60,0000 mile powertrain warranties. In fact, there is a Subaru Forester Owners thread that runs over 33 pages with 654 posts from other owners throughout the world reporting the very same failure over the past year, nearly always between 50,000 and 70,000 miles. (https://www.subaruforester.org/threads/2019-thermo-control-valve-assembly-and-warranty-merged-thread.823510/) This past week, a friend of mine who's an old school mechanic, took the old TCVA apart and discovered that coolant had actually leaked into the part's internal electronics and shorted them out, causing the failure. He was amazed that the short circuit did not damage my Forester's computer. It's certainly a design and manufacturing defect and a recall should be issued by Subaru.

- Gettysburg, PA, USA

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. They even had the parts in stock to make the repair that day! They kept the parts and said they were going to be sent back to Subaru of America for analysis.Interesting detail: once we drove the repaired vehicle, it ran better than it ever had and the only work they did was to fix the TCV issue (according to the repair paperwork).

- Lexington, NC, USA

The Thermo Control Valve had went out. When the valve went out, the Subaru Eyesight became disabled. This also turned off the forward collision, automatic emergency braking, blind spot warning, lane departure, and rear cross traffic warning and braking. Subaru has a service bulletin, 09-80-21, stating the issue.

- Beloit, OH, USA

Auto safety systems compromised with illumination of check engine light and engine temp warning light. Subaru dealership service department determined problem with Thermo Control Valve. Engine was not overheating as the vehicle was being driven in winter time, February in Alaska. Only indication of problem was indicator lights and reduced heat from cabin heat system. Vehicle went into "limp" mode as soon as warning lights illuminated, disabling advanced safety systems.

- Anchorage, AK, USA

Driving uphill when the car suddenly jolted, lost power, and all warning lights became illuminated. All safety features were disabled as well. The sudden stop almost resulted in being rear ended and the car was barely drivable afterwards. Diagnostic trouble codes: P26A6, P2004, P2005, P060B, P0191, P24B9, P2200, P2400.

- Cabot, AR, USA

The engines shut down or stalled on me while driving completely. It did not accelerate when I was trying to move the car off the road. the engines sputtered / shaken, all the lights came up on the dash board, smokes started to come out of my engines. this problem is similar to the recent Subaru recall on the fuel pump. Please add 2019 Forester on your list of recalls. This is a serious and dangerous issue, i could have been killed if I was dring on the freeway. I was lucky it shut down on a little local street when I was dring slow, about 30 - 35 mpg. Imagine if this happened on the freeway, it could have created a chain reaction, and a lot more people will be involved, and deaths might be involved. Please add Subaru 2019 forester sport on your list immediately because deaths involved. Thank you.

- Wexford, PA, USA

On 10/7/2022, all the warning lights came on and stayed on, even after tightening the fuel cap and replacing the battery. I brought the car to Ocala Subaru this morning, and paid for a diagnostic that shows the Thermal Control Valve needs replacement. Apparently this is now a common problem on this year and model Subaru. I was told that this is not covered under the powertrain warranty, even though it is part of the engine assembly, and is a very expensive repair, even though the car has only 43,669 miles on it. I was told the part is on national back order and that the car is okay to drive, but that most of the safety systems that have the lit warning lights are now disabled. This is the car my wife uses to transport our 6-year-old granddaughter to school and swim practice and events, as well as elsewhere, and I feel this has compromised their safety and warrants a recall.

- Ocala, FL, USA

check engine light came on end of August. Took into dealership early September (9/6/22) to find that the P26A3 code or Engine Coolant bypass Valve is defective. I have 47k miles on my 2019 Forester, so luckily it is under the powertrain warranty ( up to 60k). however, dealership is backlogged and waiting on parts. they were giving out loaners but can no longer do it due to the long lead time on parts as well as no place to let vehicles park for several months. I have been driving my vehicle at a limited capacity, however, living in Michigan the days are getting colder, and the need for my defrost to work properly is a must. with this issue my vehicles heating system is never warming up. thus causing a safety issue when I cannot use defrost on my car while waiting for parts to come in. I understand that all manufactured car parts have long lead times right now, however this is now a safety issue when not being able to use the defrost (directly related to this needed repair) on my 2019 forester.

- Cedar, MI, USA

The problem seems to be a faulty Thermo Control Valve Assembly. When I started the car, the dashboard lit up with several warning signs including the check engine light and 6 or 7 other warning lights. I also received texts and emails from Subaru saying to have my vehicle serviced ASAP. My 2019 Forester only has about 16,000 miles on the odometer. Continuing to drive would cause damage to the engine and potentially the car could abruptly stop on its own. Our car has been in the service department of our dealership for five weeks. I just received a call this morning that we had to return the loaner rental today, but that the thermal control valve is not expected until mid- or late-October. (It is now September 20.) I researched several Subaru blogs, and it seems that many others are having the same issue with their Foresters. Our dealership has five automobiles in their service department waiting for this part (and this is only one dealership). I also researched the Subaru service bulletins and see that they have a newly-designed thermo control valve assembly (same part number as the old one but a different date etched into the part). Apparently this has been an issue known by Subaru since at least September 2021 when their service bulletin came out. It seems that with so many owners having the same issues, there should be a recall and part replacement without cost to the owners.

- Novato, CA, USA

The problem cited below is on a 2019 Subaru Forester with 20,101 miles. The 'check engine' light came on when I started my vehicle as well as all the ADAS warning lights came on. All ADAS were inoperable. The car was drivable so I cautiously drove it to a Subaru dealership. While driving, I noticed the engine never warmed up. Running a cold engine causes an emissions problem and may be a violation of an EPA standard. The problem was diagnosed by the dealership as a faulty Thermo Control Valve Assembly, Part Number (21319AA010). Upon researching the problem on www.SubaruForester.org, I discovered over 240 similar postings about the same complaint on the same model car. I consider this to be a Safey issue with a potential of significant engine damage causing engine failure as well as making all the ADAS inoperable. Subaru of America is aware of the extent of this problem and should be made liable for recalling these vehicles and fixing this safety problem. The vehicle is currently (since Aug. 23, 2022) at the dealership awaiting a back-ordered part. I am currently negotiating with Subaru to have the part repaired under the 5 year/60,000 mile powertrain warranty. Please look into this issue since so many other owners of this vehicle are having this same issue. Thank You.

- Rockville, MD, USA

The contact owns a 2019 Subaru Forester. The contact stated that the vehicle was in the park position in a parking space but was unsure if the shifter was in park when without warning, the vehicle rolled down a hill and crashed into a chain link fence and burial wall. No warning lights illuminated. The air bags failed to deploy. No injuries were sustained. No medical attention was needed. A police report was not filed. The vehicle was towed to an independent mechanic but was not diagnosed. The vehicle was not repaired. The dealer was notified of the failure and the contact was advised to schedule an appointment to have it diagnosed. The manufacturer was not notified of the failure. The failure mileage was approximately 36,000.

- Omaha, NE, USA

My 2019 Subaru Forester Sport only had 41,000 and the thermal control valve on it failed. The engine is running really cold and sometimes without warning certain safety feature shutoff as a result. There were no warning signals before it failed but when it went out the check engine light came on as well as about 5 other warnings. I had it diagnosed at Young Subaru in Ogden, UT. After doing some research I found that this specific part recently underwent a design change due to this malfunctioning. I-€™ve found several other Subaru owners that are having the exact same issue where the safety features are completely disabled as a result of this poorly manufactured part. This part needs to be recalled asap before it can continue to cause more damage to the engines or the people who drive these vehicles

- North Logan, UT, USA