Subaru Forester won't start problems

Filed Sep 17, 2026 · Electrical, Engine · TX

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.

Filed Aug 9, 2026 · Fuel system · NC

Discovered (06/08/26) that the engine would not turn over without the accelerator being pushed down when warm from driving after resting 30-60 minutes. Car was taken to Capital Subaru. No codes were triggered. The throttle body was cleaned. No change. The Crankshaft Position Sensor was replaced, the ECU was reprogrammed, then the EVAP Purge Valve was replaced. A bottle of fuel injector cleaner was added to the gas tank by the dealership mechanics. No improvement. Then both CAM sensors were replaced. No improvement. All with no effect. Finally the injectors were pulled and a rail pressure test was conducted. The injectors were not holding pressure for more then 2-3 minutes. The warm start issue was fixed when the injectors were replaced on July 31, 2026.

Filed Jun 3, 2026 · Engine · OR

Vehicle entered limp mode at highway speed (approximately 70 mph) on [XXX] freeway in Washington State, it felt like I had rear ended a vehicle it shut down so hard. This was due to mis diagnosed inspection and service repair from a local Subaru Dealer. Vehicle lost power rapidly, creating a dangerous safety situation. Root cause traced to TCV/PCV system defects previously documented by authorized Subaru dealers. Previous Subaru authorized dealer replaced a torn PCV hose but did not diagnose the problem causing the tear. The dash warning lights were still illuminated after the diagnostic and repair when vehicle was picked up after service. I have attached a more detailed overview of the dangerous situation. The car finally lost power on the freeway while I was in the fast lane pushing 70 miles an hour. I was in the fast lane and with no power I had to cut across both lanes of traffic and get to the shoulder. I was 45 minutes from my home and it was dark, raining and the Subaru would not start. I called a mobile mechanic I found online who came out to the freeway, roadside, where I was stranded. He worked on the car for a couple of hours in the rain. He got the car to start but it would not stay running. I had the car towed to a friend's house in Vancouver, WA about 6 miles from where it had broken down. The same mobile mechanic came out and changed out one of the oil actuators and cleaned and replaced two of the OCVs then flushed the oil system and put new oil in the car. Cleared all the codes. The car starts, idles and will drive up to about 1500 rpm’s but any more than 1500 rpm’s and it dies. It's in limp mode and will move past those rpm’s. The warning lights and the PCV house splitting must have been signs of something else being wrong. That is the discussion I had with Wilsonville Subaru. They diagnosed the vehicle and let me know the PCV hose was the problem. Car was towed to [XXX] in Vancouver, WA sitting since April 15th, 2026 INFORMATION REDACTED PURSUANT TO THE FREEDOM OF IN

Filed Feb 3, 2026 · Electrical · WA

The defect presents itself when the equipped data communications module (DCM) attempts to communicate with 3G cellular networks. As 3G networks within the U.S. are no longer functioning, the call will continuously fail even after the vehicle has been turned off, draining the battery and resulting in a no-start safety risk for drivers but in order to replace the DCM to the 4G it will cost upwards of $2000.

Filed Dec 2, 2025 · Electrical · CO

Subaru Forester 2019 January - February of 2025: issue initially presented as the hatch beeping, indicating that it was not closing fully. The hatch would not pop back up as if something was in the way, just remain down & continue beeping. The car would then not start, with only the hatch beeping noise (beep beep beep) going off. When I drove it, it kept warning me that the hatch wasn't shut completely. After I parked it in the garage, the next morning it would be dead. The issue was supposedly resolved in February of 2025 as I replaced the battery on my own and replaced this part: 29182AA060. Schomp Subuaru reported no issues with their diagnostic tests. November 30th - December 2025: I started the car just fine. When I opened the trunk and closed it, it gave me three beeps and wouldn't fully close, even if I pushed it shut and locked it. The next morning, the car would not start - the battery was dead. The tow company also could not jump start the car. As the car was being towed, the hatch alert was the only thing working/beeping. Even when not trying to use the hatch. I have used the car every single day up until this issue started. I have not left the keys in the car. The car is now back at the dealership. The unreliability of this can/has left me and my passengers stranded and cold. The dealership found no issue the last time this occurred even though there was a class action lawsuit about this exact issue, but somehow my car was not considered included. I cannot have Subaru tell me that there is no issue again.

Filed Nov 1, 2025 · Electrical · ID

The defect presents itself when the equipped data communications module (DCM) attempts to communicate with 3G cellular networks. As 3G networks within the U.S. are no longer functioning, the call will continuously fail even after the vehicle has been turned off, draining the battery and resulting in a no-start safety risk for drivers. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed May 27, 2025 · Electrical · VA

Without any prior issue of having the engine turnover from being parked for more than 20 hours, the car would not start. It’s like the battery completely died overnight. I was able to unlock it but the car would not start, and therefore was unable to go into neutral because I didn’t have a long enough screwdriver with me to manually override into neutral. So it had to be jumped partially to be towed (had it towed for more than just the battery because it’s under warranty). The interesting part is that my car has a factory issued battery, and my car was the third Subaru made after 2020 that had to be towed due to the same issue, in the same day. Maybe the batteries are defective? Regardless, since everything relies on power now, having a provided device to allow for manual override would prevent folks from being stranded. I tried using my key AND the screwdriver that comes with the spare tire. Both were to short.

Filed May 16, 2025 · Engine, Fuel system · TX

My car is a 2019 suaru forester 54,268mi I was driving from Houston to Dallas on the freeway during a thunderstorm on [XXX] [XXX]. I got off the freeway and was almost on the road near my house when my car engine suddenly died, I had no control of my car, my car engine would not start anymore. I had no problems with my car before. I towed it home the next day and had it checked with a scanner and it came up with about 25 check engine codes. 5/14/2025 Subaru dealer (ewing of plano) had it checked and had the thermo control valve replaced because it was bad. They had no previous notices or recalls. If my car had stopped in the middle of the freeway it could have been a major accident..other people's lives are important..please look into this issue INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed May 9, 2025 · FL

Automatic stop activated at traffic light. When the brake was disengaged, the star would not start. The occupant was stalled at the traffic light during rush hour in a thunderstorm with limited visibility for approximately 15 minutes. Winter Haven Police Department was dispatched but did not arrive probably due to other weather-related traffic situations. After that time, the engine did start and was moved into a lot without incident. The good Samaritan that assisted stated he had just stopped down the street on another disabled vehicle in traffic due to malfunctioning auto stop/start. Here is the issue. The alternator and battery have both been checked twice and were in proper order. The OE battery was in use. There was no warning to indicate any issue with the batter. In fact, the Subaru app was reporting the vehicle was operating normally while the vehicle was dead in the road. I work with a local law enforcement agency and have worked fatal crashes on that road. It is unacceptable for the vehicle to not have some type of redundant system to warn owners that the vehicle battery is failing before they are thrust into a possible deadly roadway breakdown.

Filed Jan 26, 2025 · NE

In the summer of 2024, my forester started completely stall out when I was stopped at a stop light. The auto start/stop system seemed to not turn back on. I would have to put the car in park, turn the car off and turn it back on. It was very scary being in traffic and people getting upset behind me. This happened multiple times. I took my car to the dealership. I was told an update needed to be installed and it was not anything I could do at home. After that point, it worked better, but still started back up hard at times. When I remembered, I typically started turning the feature off each time I drove it because I do not trust the feature. Unfortunately, it happened again yesterday. We were at a stoplight, and the car did not start back up, it stalled out. My husband had to quickly try to put the car in park, turn it off and then back on. Cars started honking at us. I am very concerned about this feature.