89 complaints reported

2015 Subaru Outback Electrical System

Owner-reported problems and safety issues filed with NHTSA. Review common failures, severity levels, and complaint trends over time.

Reports
89
Crashes
0
Fires
2
Injuries
0

Complaint Timeline

Chronological view of owner reports

Nov 2025

Battery fails repeatedly even after several battery replacements and dealer fixing the software at a hefty cost, presumable to make sure the battery is charging. My insurance company (State Farm) dropped my roadside assistance coverage after repeated requests to get help to start the car. I continuously dread and fear that the car will not start after a drive to the grocery store. I dear not think about using the car to take a trip away from home. I bought jump starters and now take one with me every time I consider driving this car. God forbid it drains outs before I get back to the house to recharge it, which has happened and ended up bigging a stranger to jump start my car. It is a shame that this reputable company can sell a car that has this problem, that could be easily fixed which seems to be not a problem for other manufacturers.

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Nov 2025
Mar 2025

Car unable to restart after sitting for several days. Battery and charging system test good after incident

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Jan 2025
Feb 2025

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.

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Feb 2025
Oct 2024

Horn became intermittent with failure related to steering wheel position, then failed altogether. No horn is a safety issue. We replaced the 'SRC SET 83196AJO4', AKA 'clockspring', the wiring assembly that connects the AIRBAG as well as the HORN, and all steering wheel controls.

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Aug 2024
May 2024

Ignition inhibitor switch causing car to stay in neutral, fried the starter and battery 8 months after getting a brand new transmission under subaru warrenty

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Mar 2024
Feb 2024

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.

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Feb 2024
Aug 2023

The battery has been in need of replacement at least every year if not twice a year since purchase. This has led to issues with the rear hatch and other fuses being blown.

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Jul 2022
Feb 2023

The horn in my car quit working about a month ago. I have checked the fuses and relay involved in the horn fiction. I have also tested the horns themselves and they are working. All signs point to the clock spring in the steering column being bad.

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Oct 2023
Nov 2022

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.

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Nov 2022
Oct 2022

I have had to replace battery sooner than it should have. Also, it seems to be causing an electrical issue with the computer board where all the dashboard warnings are blanking. I have been disconnecting the battery and reconnecting to reset the computer board.

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Mar 2020
Oct 2022

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.

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Apr 2022
Oct 2022

Inoperative horn. Traced to continuity failure in steering roll connector, part #83111AL13. No indication of fault and no other apparent continuity failure in adjoining wire paths.

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Jan 2022
Sep 2022

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.

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Nov 2017
Sep 2022

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.

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Mar 2022
Aug 2022

Replaced 2 new batteries in 6 months. Batteries went totally dead. Batteries wer replaced by independent shop. Dealer changed battery to a subaru oem battery, checked system, said everything ok. Read about complaints about subaru batteries going dead months apart. Want to find out if there is a defect in subarus.

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Aug 2022
Aug 2022

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. '

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Jul 2022
Jul 2022

The contact owns a 2015 Subaru Outback. The contact stated that the vehicle was experiencing frequent battery failure. The contact stated before the battery failed, the check battery warning light was illuminated. The contact had replaced the battery three times within five years. The contact had not taken the vehicle to the local dealer. The vehicle was not diagnosed or repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 14,739.

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Apr 2019
Jun 2022

Battery repeatedly drains when vehicle not used. Have replaced multiple batteries. Alternator checked and functioning.

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Jun 2022
Jun 2022

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.

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Jun 2022
Jun 2022

The electrical system failed to go into sleep mode after parking the car. The battery was totally drained by morning causing us to find someone to use jumper cables to juice it up again.

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Jun 2022
Jun 2022

The battery has gone completely dead 3 times over 6 years since I purchased this car new. The battery dies, like clockwork, every 2 years. I have purchased 2 new replacement batteries so far on 5/16/2017 (mileage 25,895) and 2/5/2019 (mileage 40,017). The third instance just occurred 1/5/2021 and I have not yet had a chance to take the car to a shop to determine whether the current jump-started battery will reliably hold a charge. Clearly, there is a problem in the Subaru electical system causing a constant drain on their batteries. A quick internet search uncovers that this has been a common occurrence among many Subaru owners over several model years.

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: May 2022
May 2022

Battery repeatedly fails every 2 years since new vehicle purchased. New vehicle purchased in 2015, had to replace battery in 2017 and replaced again in 2019. It is now Jan 2022 and battery had insufficient charge to start car. I have now had to purchase a $110 battery charger to hopefully maintain the charge on my battery. There were no accessories left on or other unusual circumstances that would cause the battery to drain. The vehicle is driven regularly and kept in a garage. There appears to be an ongoing problem with the vehicle routinely prematurely draining the battery over time.

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Apr 2022
Apr 2022

My battery has continually been dead, despite replacing the battery twice. I just had to call roadside assistance last weekend on Saturday. Yesterday (Sunday), the battery was dead again - 8 days later. This happened several times when I first got my car, and Subaru replaced the battery, as the car was still under warranty. I have since replaced the battery twice, and am still having the same issues. This is extremely frustrating, considering one of the main reasons I bought this car was for the reliability.

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Apr 2022
Apr 2022

On multiple occassions, I have been unable to start my Outback b/c the battery is dead. Note that I have not left any lights on, doors open etc. and, when I have taken my car in for routine services, the battery is deemed to be in proper working condition. In addition to being extremely inconvenient when I cannot use my car as needed, this is a safety issue. What if I was not in a safe location when my car wouldn't start? What if I needed to use my car to get a pet to urgent medical care? When I purchased my Outback, I was confident in the Subaru brand for reliability. However, it no longer consider my Outback, or Subaru as a brand, reliable when I can't count on my car starting when I need it to. The date I provided in the additional details of this form is just the latest incident. I purchased this car in 2015 and my battery has been drained more than 5 times.

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Apr 2022
Mar 2022

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.

Type: Vehicle, Vehicle: 2015 SUBARU OUTBACK, Manufacturer: Subaru of America, Inc.
Incident: Mar 2022

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Quick Summary

The 2015 Subaru Outback has 89 Electrical System complaints on file. Review the timeline above for detailed owner experiences.