2020 Subaru Forester: won't start

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 Dec 3, 2024 · Electrical · CA

This has happened multiple times, is increasing in frequency. Stopped in traffic at a red light. The Auto Stop/Start was enabled and activated when stopped at the light. When the light turned green, tried to go, but the AS/S system failed. A “No Eyesight” warning flashed and disappeared; various symbol lights blinked across the instrument panel. Car would not start, hazards would not activate. After 10-20 seconds, I was able to put the car in park and restart the engine (would not start before then). No battery or check engine lights had been on previously, up to date on oil changes, 66k total miles, vehicle fully maintained at the nearest dealership. This was scary as I was stuck in the middle of the road on a state highway with traffic and cars behind me. Many people have reported this issue in Subarus and I’d like for this dangerous problem to be formally addressed.

Filed Oct 20, 2024 · Electrical · GA

Stopped in traffic near a red light. The Auto Stop/Start was enabled and activated when stopped at the light. When the light turned green, tried to go, but the AS/S system failed. A “No Eyesight” warning flashed and disappeared; various symbol lights blinked. Car would not start, hazards would not activate. After 20-30 seconds, I was able to put the car in park and restart the engine (would not start before then). No battery or check engine lights had been on previously, up to date on oil changes, 35k total miles, and I had a quarter tank of gas. This was scary as I was stuck in the middle of the road with my children while cars behind me tried to pass on either side. Many people have reported this issue in Subarus and I’d like for this dangerous problem to be formally addressed.

Filed Sep 26, 2024 · Electrical · IL

Stopped at a red light at busy intersection. The Auto Stop/Start was enabled and activated when stopped at the light. When the light turned green, tried to go, but the AS/S system failed. A “No Eyesight” warning flashed and disappeared; various symbol lights blinked. Car would not start. Driver activated hazard lights, which flashed for no longer than three to five minutes before stopping completely. While car was stalled in traffic, a few lights continued to blink on the dash.

Filed Apr 18, 2023 · Electrical, Engine · PA

While driving the vehicle suddenly stalled and stopped running. The dashboard illuminated with most lights and the check engine message came on the screen. I was thankfully able to get into the shoulder on the road safely without creating an accident or getting injured. The vehicle would not start again and had to be towed to the dealership. I am now out $1800 because I am slightly over my powertrain warranty in mileage on the vehicle. This is a known issue in bulletin: I am not only disappointed with Subaru of America and the federal safety agency that this is not already a recall but I am also willing to seek legal action and compensation if this repair is not going to be covered. There are many incidents and reports online of similar issues: https://www.subaruforester.org/threads/2019-thermo-control-valve-assembly-and-warranty-merged-thread.823510/ https://www.carcomplaints.com/Subaru/Forester/2020/drivetrain/power_train.shtml I have filed a case with Subaru of America corporate and am waiting to hear back. Someone is going to cause an accident or end up dead because of this faulty part. It is borderline criminal that this is not already a recall.

Filed Aug 18, 2022 · Electrical · NY

BATTERY DRAINS constantly and car will not start. This has happened several times the past month. I understand that it is an ongoing issue with other Subaru's. This is dangerous and must be fixed. This issue has happened 3 times in 2 weeks. 8/1, 8/13, 8/15/2022

Filed Feb 10, 2022 · Electrical · FL

I bought my new 2020 Forester in November 2019. It now has 1604 miles on it. Twice already I've had to have it towed to the dealership because the battery was dead from just sitting in my driveway. The first time, February 2021, they said it was a bad battery. The second time, January 2022, they said it's because I don't drive the car enough. Said I have to drive or idle the car for at least 15 minutes twice per week which is a waste of gas and time for something that shouldn't happen to start with! There are already lawsuits about this constant battery drain but the 2020 Forester isn't included and it should be! There is NO reason for the battery to constantly drain to the point that the car won't start when the car is sitting with everything turned off!

Filed Aug 10, 2021 · Electrical · NC

Purchased new on 5/22/2020. On Aug 8th after not driving the car for 3 days, attempted to start vehicle. Would not start. Battery dead. Charged battery with a jump. Drove car home. Next am. Car would not start. Battery dead. Currently trying to get car in for service. This is very dangerous stranding people randomly.

Filed Aug 8, 2021 · Electrical · MA

The battery on my 2020 Subaru Forester Premium /LFF14 drains within a week if not driven. There appears to be a parasitic battery drain problem. The car will not start. I replaced the original factory battery with a larger, after-market battery having been told by several sources that this problem is common to Foresters and is caused by defective batteries being supplied to Subaru. However, the new battery did not solve the problem. I regularly test the battery with a battery tester that indicates that the battery is OK, but is discharged and requires charging. I now keep a trickle charger on the car continuously. This seems to keep the battery charge up to 98%. I have retained the original battery which holds a charge indefinitely out of the vehicle. I am aware that driving the car to recharge the battery is extremely hard on the alternator and will cause it to prematurely fail. The car was purchased in August of 2020 and currently has less than 500 miles. This is a recurrent problem.

Filed May 15, 2021 · Electrical · 3,200 miles · OH

Battery was drained for no reason and car would not start. When tried to start dash lights etc., went crazy. Gauge for tachometer and speed whipped from side to side, lights flashed on and off. The starter gave the clicking noise you hear when battery is dead. Called aaa to jump and they could not get it to start. I charged battery overnight and the engine started. Took car to dealer they could find nothing wrong with the battery or charging system. They could not explain why this happened. I purchased a battery tender to maintain charge in battery. I only have 1 car and it needs to start when I need it. This happened on day I needed to take wife for covid vaccine shot.

Filed Feb 15, 2021 · Electrical · 8,700 miles · MA

Went to start car after being parked for 3 hours. Doors opened with fob but keyless ignition would not start car and all idiot lights came on locking steering wheel, brakes, gas pedal, etc. Subaru service came and jumped car; not sure if fob had died; car only 11 months old, under 9000 miles. Temperature in high 20's, low 30's. Keyless ignition had been wonky earlier in week and car hesitated to get started. Eyesight turned off briefly on drive home after car was started by jumpstart.