Disclaimer... speaking with customer service at Subaru will get you further than a dealership, and will at least cover testing (still need tons of patience). A lot of my gripe is on the dealer as well and trying to pass the blame.

My car battery first died about 3 years from purchase date. Fair enough, new battery installed, bigger/better one, and 3 days later it died. Instantly the dealer blamed the battery, saying that sometimes you get a bad one. Replaced the battery. 3 days later died. Brought it back, and then they try to blame me (common theme with big shops). Leaving lights on, not driving it everyday for at least 30 min (yes, this is a standard they tried to tell me all cars have), then they said I should have a charger plugged in every night in the future (no, the Subaru outback is not electrical...). I shot down the second and third points, because that means my 2008 Mazda 3 hatchback was the king of cars as I could leave it for months and it will still start (loved that car!).

I challenged them to the first point on saying that I must have left lights on. I let them keep the car overnight. The next day I came back and asked for a diagnosis. Dealer stated that it passed 23 point inspection and that nothing was wrong. Then they mentioned they did have to charge the battery (brand new!), which to my knowledge is NOT normal. I took a break, continued to jump start the car and engaged with Customer Service. After some dancing around the same excuses; FOB is too close to the car, too small of a battery, too cold conditions (Norcal in the summer?...), lights left on, and then back to driving it constantly as a solution, they folded and helped get me another inspection free of charge, which the dealer wanted me to pay for as they already done an "inspection".

Second inspection found a parasitic drain... duh... so they replaced the telematic and battery DCM. Had some hope, but it only lasted slightly longer than usual. I am living with the issue, jump starting has become second nature. I have reengaged CS and found a new dealer, hopefully someone with better knowledge and ethics. A new issue has now arise that is most likely associated with the electrical system, the key getting stuck in the ignition...

JOKE of the WEEK: Subaru has announced an all electric Solterra. We'll see how well that works out with their current "mastery" of electrical systems.

P.S. No matter the size of battery (CCA, etc) you put in the Subaru, it will not make a difference. Maybe it buys you a day or two more of charge. Still looking for a permanent solution. Maybe a trade-in for a Mazda?;)

This happened twice ... a week after the battery was replaced the car was dead again. I had it towed to the Dealer where it spent more than a week and nothing was found ... again.

But my wife's 2017 had the exact same issue at 15,000 miles last week ... and again the battery was replaced a nd it worked fine for several days but then sat in the garage without starting for several more and this morning it would not turn over ... completely dead and we had it towed to Faulkner Subaru who quickly diagnosed the problem ... she does not drive the car enough!

Two 2017 Subarus different models and the same problem cannot be a coincidence.

Dead battery on brand new car! 9299 mis. was told battery OK at dealer. Dead battery Oct 29 2018 dead battery replaced at dealer. Dec 3 2019 dead battery was told it is OK Was told to drive it every day! Never let it set! do not take on short drives! mis is 18963. May 2 2020 dead battery!!! Really pissed! Tired of dealers excuses! 20,100 mis!!! Told me to not leave keys near car! Leave on other side of house!!!!!! How about just GIVE me a great battery I can rely on!!!!! Never recommend a Subaru to anybody!!!!!

This is just the latest dead battery. The car electrical system has been checked at least 3 times by the dealer, the latest being today. No problem found again.

I am retired so the car sits sometimes for several days. My conclusion is the electronic system drains the battery while sitting. This is exacerbated by the electric key fob turning on the electronics when brought near the car. i.e leaving the key fob in the car while working on or near it is now a no no for me unless I put the fob in a tin box. I now carry a backup battery to jump start the the car. I also have a Deltran 5amp Battery Tender which I plug into a wire connection permanently attached to the battery when leaving the car home for any extended time . I also turned off all the overhead lights so to prevent that from being the issue.

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Now all this is a real pain for keeping an otherwise very nice car from becoming nothing more than an expensive driveway ornament.

You would think that with all the great electronic stuff on the car there would be some way to manually shut it all down and/or a monitor to do that and warn you so the car would start and go every time.

I have a 2017 Subaru, the dead battery issue occurred at a dangerous time and place where it left me with a 12 mile hike to find the nearest person that could provide a jump start. In the morning I drove out to a remote section of a large lake, fished for a couple hours, came back and the battery was dead.

After hiking 12 miles for the jump start, I took the car to a dealer. The dealer tested ran the long test, draining then a full battery charge and load test. Battery was fine, but the dealer sad the drain was from repeated software update failures. This issue is extremely concerning as I'm often out fishing in far more remote places occurred with this recent incident

Car only about 5 months old. I live in Michigan. We have cold winters. The battery died and would not hold a charge and it required at least three charges to drive it before I could get it into the dealer.

The dealer explained that the computer chip controlling much of the car had been set to turn on the alternator only when the engine had warmed up. Short cold trips drained the battery and it would not start. The dealer claimed to reset the chip to have the alternator work as soon as the engine was started.

There are lots of cold winters in the norther US. I wonder if this problem occurred with other Outbacks.