2017 Subaru Outback Electrical System

Multiple battery failures with regular usage. Had to replace battery with AAA on a weekend evening. 10/6/2019 new battery cost $148.42, plus hours of waiting time. In 2021, two calls to AAA to jump start dead battery from regular usage.

Battery constantly drains. New battery (8/22) will not hold charge.

My battery has died on multiple occasions and it has not been user error. It dies about every 2 months if I haven't driven it long distances. I got a new battery and have the same problem. When I get it charged, I'm told it was completely drained.

NHTSA report We purchased this vehicle used on 9/11/2019 from Subaru of Spokane in Spokane Washington. The car has failed to start and required towing to the servicing Subaru dealership Carter Subaru of Ballard, WA where they have replaced the battery, (twice) and fuses. In three years, this car is on its third battery and has failed to provide reliable use, required towing, and two weeks of lost use. This is apparently a well-established issue--Subaru of America has lost at least one class action suit in NJ, as well as a Lemon Law case in California. However, these two dealers in Washington State are behaving as if they have never heard of the issue and are not forthcoming in fixing the problem so it does not reoccur.

I had a battery that was about 1 year old that died suddenly. I called Triple AAA and they replaced it, and 1 week later, the new battery died and the car wouldn't start, so AAA came and replaced it again. 3 days after that the 3rd battery died. AAA confirmed both times that there was nothing wrong with the alternator and everything looked fine. Looking online it seems that this has been a common issue with Subaru Outbacks.

Started car and all warning lights on dash were flashing. Turned car off and car would not start and there was a loud ticking noise coming from the engine bay.Contacted AAA and technician checked battery and verified that it was dead and he was not able to start the car and this time there was a different loud ticking noise with all dash warning lights flashing. Installed higher quality battery and the car would not start with the same result. Had car towed by AAA (9/12/2022) to our local Subaru dealer for diagnosis. After 5 days the Joint Box or BIU part #82201AL20A was defective. These are the Subaru code defects from the dealer are B1578, B1401 and B1411. Cost to repair including diagnosis is $956.02. Previous battery/electrical issue in 2018. Battery drained by electronic brake fixed under warranty.

Battery failure ( would not charge or hold a charge)

Battery found dead 2x First time July 2021, replaced battery Second time July 2022, car will not start

The battery has drained on at least 4 occasions, resulting in 3 tow trips to the dealer. I left the vehicle there one time for 2 weeks while on vacation so they could watch for and analyze drain. Nothing was found they said. The dealer replaced the battery at least once and I bought a ‘platinum’-level toe one at at car parts store.

Have replaced the battery on three different occasions in our vehicle. Research shows that Subaru knows that this is an issue for 2015 to 2020 Subaru Outbacks and there is a class action lawsuit regarding this battery drain issue. The defect is called a CAN (controller area network) issue that drains the battery. Reading postings on the internet, numerous individuals who own Subarus with this issue have been stranded. There needs to be a recall regarding this issue that Subaru is well aware.

Battery has paracitic draw caused by ECU problem. Battery dies if not driven every day.

The contact owns a 2017 Subaru Outback. The contact stated while attempting to start the vehicle, the vehicle failed to start. The contact was able to jump start the vehicle. The vehicle was taken to the dealer and the battery was replaced; however, the failure recurred several times. The manufacturer was contacted and stated that the contact would be notified of what the manufacturer was responsible to cover. The failure mileage was 70,000.

My battery is constantly needing to be jump started even after replacing it twice. The battery tests are always good. If I open my trunk while the car is not running, I have to get it jumped. I’m currently unloading groceries and what not with the car running to save myself from having to get jumped.

Battery drains completely when parked for a week. Replaced the battery after it happened twice. After replacement, battery still drains after being parked for a week resulting in the vehicle having to be jump started.

The battery doesn’t last as long as I think it should. The car is 5 years old and I’m on my 3rd battery.that doesn’t seem normal.

Vehicle battery drains intermittently for no reason. Subaru claims nothing is wrong but replaced the battery. The problem has not changed.

The battery drains after not using the vehicle for 48hrs+. We've replaced the battery 3 times and have had to jump start the vehicle more than 10 times in the last 18mos. This causes a safety concern as there have been times where the vehicle wouldn't start in unsafe areas and late at night not to mention a major hassle to get transportation while stranded in the middle of an airport parking lot at night. This is happening temperature independent, cold and warm (60F+) with the only factor being if the car site for more than 2 days.

My charging system fails to keep my battery charged . This happens irregularly - even when the car has just sat in the garage for two or three days. We have not left the doors open or the lights on. It's very frustrating.

Since I purchased this car, I had the battery drain to the point the lift gate would not open and kept beeping as if something was wrong with the car. I replaced the battery and the problem corrected itself. I am now having lights in the dashboard go out and the power windows stop working. There appears to be an issue with the electrical system.

Battery continually found dead requiring frequent jump starts

Repeated battery drained issues. Multiple batteries replaced.

The contact owns a 2017 Subaru Outback. The contact stated that while attempting to start the vehicle, the vehicle failed to start. The vehicle was jump started. The contact had the battery replaced; however, the failure persisted. The vehicle was taken to the dealer to be diagnosed; however, the mechanic found not fault with the vehicle. The manufacturer was not contacted. The failure mileage was 40,000.

I have had to replace the battery multiple times since purchasing the vehicle in 2017. Each time the battery was determined to be unusable by qualified service staff. Battery replacements occurred on (1) 2019-10-18 at 34,877 miles and on (2) 2022-02-24 at 67,339 miles. The first occurrence left me stranded at a hotel on a sub-freezing day. The second occurrence left me stranded in a parking lot. Both required me to obtain commercial service to get on the road. Both occurrences were subsequently diagnosed by a reputable service shop (Les Schwab) as a battery failure and replacement was recommended. The battery failures occurred without warning from the vehicle (no lamps).

Battery drains too quickly. Lots of corrosion on battery terminals. Corrosion builds up over very short period of time. Risk of car not starting when needed. No warning lamps, or messages have come up. Battery problem could be related to other electronic issues like automatic windows, and cabin lights problems.

Premature battery draining. This is the 3rd battery purchased for my 2017 Subaru Outback. The most recent battery was purchased on 05/11/2022. Today (05/28/2022) I went to leave for work and the entire system is dead. Not the first time I had this problem and as mentioned this is the 3rd battery purchased in the past 2 years.