2015 Subaru Outback: battery drain or dead battery

Filed Feb 19, 2025 · Electrical · NC

Yesterday, my car would not start due to a dead battery. This happened last week, as well. Both times, my husband used a battery charger to enable me to start my car. I have had this issue multiple times in the past, as well, and previously replaced the battery in 2022. I am also aware of a previous class action lawsuit, and several customer complaints about parasitic drain and poor battery performance in the 2015 Subaru Outbacks. Continuing to replace the battery is not only costly and bad for the environment, it doesn't solve the problem. There is some flaw in the electrical design of this car and Subaru needs to address the root cause. I am very concerned that I am going to be stranded somewhere in unsafe conditions, or not have my car available to me when I need to get to a critical appointment or respond to an emergency. This is unacceptable.

Filed Sep 2, 2024 · Electrical · WA

Been having issues with my Subaru Outback dying for years now. I’ve gone through 5 battery’s the last 6 years. No amount of driving seems to fix the issue, the replacement batteries only work for so long until it gets cold or I don’t drive my car for a week and suddenly it dies. I believe there is a parasitic drain somewhere, I can’t figure out what. I have nothing obstructing the hatch locking mechanism, I turn all my lights off and air system off before turn turning the car off. It’s becoming a serious issue, I have to jump my car almost everyday or every other day and am driving for over 40 minutes a day. Subaru has been unhelpful and I’m now not trusting of their help.

Filed Apr 24, 2023 · Driver assistance, Steering · VA

CONSTANT CHECK ENGINE, NO ADAS FUNCTIONS AND MULTIPLE CODES AND HUD INDICATORS INCLUDING CKENGNE, XMODE FLASHING, ADAS DISABLE AND MAJOR ELECRTICAL PARASITIC DRAW AND TRANSMISSION AND OVERHEATING. I believe the past major leg relay was replaced during first recall, it was not performed correctly and tied into accesssorry aux into same wiring. defrost/ ac failure and clutch hums upon shutting down

Filed Nov 8, 2022 · Electrical · CA

I am on my 3rd battery since May 2015 when the Outback was purchased in El Cajon, California. There have been multiple instances when I prepare to venture out and am unable to as the result of a dead battery. In every instance there was not an obvious instigating factor such as a light inadvertently left on. This situation is extremely disruptive resulting in my belief that I have an unreliable vehicle that has caused me to miss appointments and meetings. There is also a significant monetary loss in that this is a known and well- publicized issue that will render me unable to recoup market value upon sale of the vehicle. '

Filed Oct 17, 2022 · Electrical · IL

1st time battery died when car was not in use at least for three days, back in Jan 2022. was replaced. on 10/11/22, after the car was not in use for 4 days, 8 month old battery was died, had to replace, again. Recently received a Subaru Battery settlement letter of a design defect that cuase battery drain.

Filed Sep 26, 2022 · Electrical · PA

I am reporting this deficiency as it is related to: Subaru Battery Drain Products Liability Litigation, No. 1:20-cv-03095-JHR-MJS Deficiency: Battery will discharge to an unusable degree within a relatively short amount of time (10 to 20 min.) when any power is used (radio, cabin lights) while engine is off. This has happened 4 times since my purchase of my new 2015 Subaru Outback. I now carry an emergency battery jump starter power unit so as to not be stranded. As the amount of power used is so small there is no warning from the car's system that the discharge is causing such a power drain as to make starting the car not possible. Although I have been contacted by the above class action suit sponsors I am mostly interested in Subaru fixing the electrical system from this obvious deficiency.

Filed Sep 25, 2022 · Electrical · OH

On multiple occasions I have had the tailgate open and the light has drained the battery to the point that it needs a jump start or a battery charging to get it to start back up. On one occasion the tailgate was only left open for 30 minutes and the car would not start due to the battery being drained from it. The battery is in perfect condition as it would start fine any other time.

Filed Jul 31, 2022 · NY

Purchased this car in 2019 from dealer as a pre certified vehicle. Replaced original battery(dealer said it was)in 8/2021. As I had to have it jumped, battery drain. 6 years old. So I replaced. I have had numerous battery drain since, jumped numerous times. Dealer will say I left something on, NO I didn't. They check and can't find issues. So, I purchased a battery jumper pack. I'm 64yrs old female. Don't need this worry, is my cr going to start. Please help. As I've read numerous other 2015 outback owners are having same issues and Subaru won't address them.

Filed Jun 21, 2022 · Electrical · CA

On multiple occasions the car battery was drained and required a jump to start. Battery replaced less than 5 months ago. Service technicians unable to identify problem with alternator or parasitic drain.

Filed May 11, 2022 · Electrical · CA

Repeated battery drain, causing premature failure of the battery. Frequent replacement of the battery and reduced reliability have increased the cost of ownership. It has occurred multiple times over the duration of ownership.

Filed Mar 27, 2022 · Electrical · VA

Our 2015 Subaru Outback has had 4 batteries in 4 years. After some research, a parasitic battery drain issue is common with this year Outback and other Subaru models. Some sites call out the Subaru CAN network as the culprit. Whatever the case, we have had the car to Subaru who changed firmware ostensibly to provide more charging at lower rpm. After that software change was made the problem has apparently gotten worse. Now the car's battery will drain in 2 days of use (the current battery is 4 weeks old). There are numerous complaints about this on line and the common opinion is that Subaru is not addressing the issue.

Filed Feb 25, 2022 · Electrical · MA

There is some kind of electrical malfunction or drainage that the battery drains even when car is turned off. Replacement of new battery results in the same problem after a few days