Parasitic Battery Drain left battery dead and unable to start vehicle. This was caused by a defective DCM (Data Communication Module). This problem first surfaced within weeks of new car purchase and took about 6-months and several visits to dealer to remedy. I also replaced the oem battery with a new upgraded battery at my own expense. Recently the problem reoccurred as the DCM module again failed and created a parasitic drain. This has probably damaged the new battery which is only a year old as it was completely discharged. The dealer again fixed the problem but as before was initially skeptical that it was caused by user error or letting vehicle sit too long between use; both of the most problematic failures occurred when the vehicle was left parked for 2-weeks at parksleepfly hotels while on trips and returned to find dead battery.

- Lansing, NC, USA

The battery will drain in under a week if the car is not driven. Subaru dealer gave me 3 batteries in 6 months. The battery tests fine, but discharges if the car sits for a week. Subaru USA gave $350 to go buy a top of the line battery and the issue persists with an Optima yellow top.

- Cornelius, NC, USA

I have had battery failures in the last 34 months 3 times. I have reported this problem before. The dealer replaces my battery and gives advice about not driving enough. not keeping my fob the proper distance from the car. This is casing me to be concerned about safety issues. I know there is a class action 2020 for this problem but subaru needs to solve this issue. It is a computer on wheels and I realize that uses a great deal of electrical power but you should not be stranded because subaru refuses to solve their issues. My next step is to contact subaru but I doubt they will take any action. So I guess next step is to change cars. Its a shame as they charge a great deal of money for this car. I owned the first outback when it came out and had no problems. I am extremely disappointed in their cars now.

- Ocala, FL, USA

Battery Drain....3 different times, car will not start, kills the battery 89 year old lady left to call for help with starting the car.

- Mcleansville, NC, USA

The battery of my Subaru Outback appears damaged. My car's battery has died or shorted two times over the past two days. It had to be jump started for it to work, only for it to stall again. This puts I and my passengers at risk because the vehicle could've stalled while in motion. This problem has been confirmed by an independent service provider, the towing company. There were no warning signs or symptoms prior to this problem.

- Maple Grove, MN, USA

Abnormal draining of battery when I dont drive for a couple of days leaving me stranded due to my medical immobility. This has been ongoing for the past six months.. Several instances of where I have had to jump start it only to find the battery dead in a few days Have alerted dealer on issue and will need to be checked when I take it in for the Fuel Pump recall for which I was put on a waiting list as they did not have the parts in"??" A very annoying problem with the battery even had to have it jump started thi evening. Unrelable

- Huntington, WV, USA

My car is a 2019 Subaru Outback. It has less than 20,000 miles on the odometer. This morning is wouldn-??t start. I called for a jump and when the service person arrived, they told me the battery was dead. They gave it a jump and I let the car run for an hour. After parking the car a couple of blocks away, I tried to start it again. Nothing. Now I have to have it towed to the dealership.

- Bayside, NY, USA

Twice the vehicle-??s battery went dead leaving my wife stranded. Contacted local Subaru dealer and they replaced the battery under warranty. The service manager told my wife that the reason the battery went dead was that she was not driving it enough. My wife drives the car every day so that is not the problem. When the battery was tested under load it showed the battery had failed and that was the reason it went dead. The battery was defective.

- Brunswick, ME, USA

The car battery has been abnormally draining when I don't drive the car for 2-3 days leaving me stranded at home. Subaru claims I'm not driving my car enough and need to drive it at least 40 mins a week. They refuse to admit any problems. I put 1000 miles on the car a month so can't understand how a 2019 Car battery drains after just a few days. I believe the car has an electrical issue that's draining the battery. I'm most concerned if this happens when I can't get a jump start and become stranded.

- Minneapolis, MN, USA

The battery in my 2019 Subaru Outback died without warning, just under 13,000 miles, on Aug. 26, 2021. AAA replaced the battery, which had only 3.7 volts remaining, at a cost of $156 for a 6-year battery. Exactly one week later, on Sept. 2, 2021, my new battery died. Another call to AAA, whose technician said the new battery was completely drained. He jumped the battery for me and checked the starter and alternator, which were fine. I drove directly to the Subaru dealer yesterday afternoon and they still have my car. I don't know for certain what the problem is, but based on owner complaints (and a class-action suit) I found online it appears that the problem is in the CAN unit, which in 2015-2020 Outbacks (and other Subarus as well) fails to put the car's electrical system to sleep when the engine isn't running, thereby draining the battery. I am very afraid of being stranded without the ability to get help quickly.

- Highland, CA, USA

Not sure if it-??s the battery itself or the alternator but the battery keeps draining and I have to keep calling to have the vehicle jump started. The vehicle is available for inspection and safety will be of concern if this continues to happen and I am out on the road somewhere remote. The dealer offered to test the battery but did not confirm the issue has occurred in other vehicles. There were no warning lights nor messages.

- Charlotte , NC, USA

The battery has drained six times since April 15, 2021. Available for inspection upon request. Risk factors for safety: unable to get husband and mother to medical appointments; unable to leave residence for ANY reason; potential for stranding in unsafe areas. Problem has been addressed with dealership who has not identified a specific problem, from June 11, 2021. No inspection by anyone other than service department at dealership who stated "Inspected customer concern, found battery and charging system testing good, found no parasitic draw for power. Found vehicle operating as designed (June 11, 2021). Of course battery was charged after it was driven 60 miles to dealership! There have been NO warnings of any kind. First of six failures occurred on April 15, 2021.

- Burgaw, NC, USA

In Oct 2020 (12055 mi) and June 2021 (17059 mi) the battery drained overnight while parked in the garage. I was able to jump it the first time. Second time it had to be towed. Dealer replaced the battery both times.

- San Marcos, CA, USA

My battery died overnight. I jumó started and took it to Subaru who said I needed a new battery. My car has 28k miles and under 3 years since I bought it. They replace the battery and same thing happened 2 days later. I keep having to jumó start my car every other day and they don-??t seem to know what the problem is.

- Los Angeles , CA, USA

Have had 2 batteries fail in 2 1/2 years. New battery installed and my electrical system is failing. Can't lock my car unless fob is in an RFID bag, has not started several times, and has refued to open several times for about a minute. Will be taking car back to dealer to see if they can fix the problem.

- Ocala, FL, USA

I received a 2019 Subaru Outback on 15 July 2021. The vehicle was sold by a dealer, and gone through the Subaru vehicle certification process, which includes checking the electrical system. I kept the vehicle off the road while I got the vehicle registered and insured, running it for a few minutes every three days. I planned to take the first road trip on 26 July 2021, after the paperwork had been completed. The vehicle would not start, and no power was available for electrical components. Checking the battery with a multimeter indicated voltage had dropped to 4V. I contacted the selling dealership, and they indicated they would pay to replace the discharged battery.

- Hollis, NH, USA

Electrical system problems causing battery drain. After jumping the battery observed flickering, eyesight system turning on and off while driving. Rear lift gate won-??t open

- Alpharetta, GA, USA

Car would not start or turn over. Battery was dead. I called Subaru and a person came over to jump my vehicle. I left it running for 30 minutes to recharge the battery. This happened two times in the last few years but I never reported it to Subaru, and had my neighbor hook his car up for a jump. Also note the GPS has locked up several times in the past and not worked until I shut the car off and restarted everything. I just kept getting the arrow going in the circle.

- Bolingbrook, IL, USA

My 2019 Outback has had 2 incidents where the battery was dead without an explanation. There are 24000 miles on it. The most recent incident occurred less than a week after the dealer serviced the vehicle. The service included a battery test and I was told it tested good. The car was parked in my home garage, and from all indications, no lights were left on, doors/tailgates open etc. This was confirmed when the Subaru STARLINK roadside assistance provider came to jump the vehicle. Immediately after the vehicle was started, I took it to the dealer and requested a battery check. They showed the battery was good but deeply discharged, so left it on a charger for over an hour while I waited. In speaking to the service representative at the Subaru dealer, I was told that on new cars, alternators no longer charge a battery, but simply maintain the existing charge level. They claimed that a light or something of that nature was left on, a door left open, etc. I am certain this was not the case, as I keep all interior light switches in the off position, and once the vehicle was charged, no lights were on. Also, no doors were open or ajar when this happened. I requested they check the electrical system to diagnose the cause of the battery drain, but they explained this would not be covered under warranty since the battery had tested ok. The dealer recommended that I keep a trickle charger on it when parked at home to prevent recurrences. I don-??t feel this is an acceptable solution for a vehicle that is merely two years old with minimal miles and fully under warranty. While I was inconvenienced by this and had to arrange a ride to an appointment as a result, it did not create an immediate safety issue (this time). A similar set of circumstances occurred in late March of 2021 when I was out of town visiting a family member. At that time, I also was not able to determine a cause. Since that was the first occurrence, it didn-??t create the same level of concern.

- Des Moines, IA, USA

Had to charge battery 3 times in order to start the vehicle. Took to dealer and they put in a new battery at no charge. Concerned the battery will need to be replaced in the future. Appears to be an electrical drain especially using the tailgate. Dealer said they did a hard reset whatever that means.

- Huntley, IL, USA