Battery dies all the time. Parasitic drain from the Starlink program in the car. There is/was a lawsuit. It involves some DCW fuse or something. Ive had to prematurely replace my battery. It also seems to be affecting the radio. It switches stations randomly.
Subaru Legacy battery drain problems
62 of the 3,184 owner complaints about the Subaru Legacy describe battery drain or dead battery, most of them for the 2019 model year.
- owner complaints
- 62
- worst model year
- 2019
- typical repair cost reported
- $300
- typical mileage
- 43,000
Is there a fix? There are 3 recalls for this area of the car. See below
By model year
Often reported together
Won't start 10Headlights 2Warning lights 1Won't shift 1Seat belt 1Power steering loss 1Loss of power 1
What owners say
Due to a dead battery issue in 2025, I bought a new battery. A year later, the car wouldn't start & I finally got it jumped. Ran fine for 3 weeks, then wouldn't start again. I brought car back to the Interstate battery shop, who tested the alternator, which was fine, but he said the battery was appearing low. After researching this problem, I discovered there's a known issue that the battery dies due to a parasitic draw. Subaru knows there is a problem but refuses to correct the issues. The dealer I bought the car from neglected to tell me there was an existing issue and will be happy to charge me $500+ to diagnose. This is a major defect on Subaru's part, and all future buyers should be aware of it!
Battery continuously dies, likely due to a parasitic drain, and it is extremely hard-taking up to 15 to 20 minutes to open the car door using the the wierd key you slide out of the key fob. As a woman, it is very dangerous when my battery dies and I am in a dark parking lot and I can't even get inside the car and lock the door for safety. Been happening for years lastest time was today 02/17/2026. For some reason, the class action suit said I was not a class member for the same problem.
Constant battery issues. I've replaced the car battery 3 times and the car seems to be suffering from "parasitic battery drain". It took a long time to diagnose the issue and I've been to the Rye Subaru dealership 2 times already and they are still trying to fix the issue. This is my daughters car and I'm constantly waiting for a phone call to have the car jump started. She works the night shift and I'm worried about her getting stranded at night.
Car battery dies after the vehicle sits for longer periods (approximately 2 weeks or more?). Roadside assistance has tested battery twice after jumping the vehicle and stated the battery is still healthy. Various Subara owners report similar situations in online forums, and the culprit seems to be a design flaw where the DCM module is trying to connect with the obsolete 3G cellular network, causing a parasitic battery drain.
If the car is not driven every day the battery dies due to a parasitic draw. Subaru knows there is a problem with the DCM from these years but refuses to correct the issues which there are 3 that are known. Dcm constantly searches for 3g network that is no longer killing the battery, Subaru changed the recommended cold cranking amperage of the battery well after manufacture, and won't test without a new battery being installed, and they expect the consumer to pay for both the testing and battery, to meet certain epa standards they altered the function of the alternator so it doesn't charge the battery until the engine is warm and won't fully charge the battery.
Parasitic Battery Drain due to DCM fuse problem
Parasitic drain on battery leaves the car dead and unable to start with out a jump. Battery is only six months old. Replaced old battery because of this same issue.
2009 Subaru Legacy 2.5I Parasitic Drain If vehicle is not driven every 2-4 days in winter or every 6-8 days when is warmer it will need a jump start. I looked for a recall but there isn't one for the year of my car or for the Fourth Generation 2005-2009 series. I took it to the dealer 4 times and they said there was nothing wrong the first two times. On the 3rd time they said it was my problem was that the battery was old and to prove them wrong I got one of their Subaru brand/label batteries and the same problem kept happening. I took it to one more mechanic with the same results. I keep seeing this articles on blogs online about Subaru's from multiple years and series having Parasitic Drain issues. I do have the receipts pack in boxes if need it.
Infotainment system screen began bubbling. Then it started randomly selection icons by itself. Then it got to the point where it is unusable and constantly is making selections on its own. I can’t even make selections if I want to. Whole screen is effected. Subaru of America is aware and my dealer first denied knowing it was an issue but later admitted to me they have gotten several complaints of the same. Dealer ordered a replacement over a year ago and I have still not gotten a replacement because they keep telling me it is back ordered and that they put a rush on it. Still nothing in over a year. This problem also causes the battery to drain while parked. I had to put a brand new battery in and it still drains. A year or so after that, Subaru sent out a notice that they will reimburse for that issue. I don’t have any paperwork left from my replacement costs. Again, dealer denied knowing that the battery drains and later admitted they knew.
Related recalls
Electrical system: ignition: switch
- What is wrong
- Subaru of America, Inc. (Subaru) is recalling certain 2009-2013 Forester vehicles, 2008-2011 Impreza vehicles, 2008-2014 WRX vehicles, 2005-2014 Legacy vehicles, 2005-2014 Outback vehicles and 2006-2008 Tribeca vehicles equipped with a mechanical key ignition switch installed as a replacement part. The ball spring inside the switch may break, reducing the strength of the ignition switch. If this occurs, the weight on the key ring and certain road conditions could cause the ignition switch to move out of the run position to the accessory position, turning off the engine.
- Risk
- The engine turning off unexpectedly can increase the risk of a crash. If a crash occurs under this condition, the air bag may not deploy, increasing the risk of injury.
- Remedy
- Subaru will notify owners, and dealers will inspect the ignition switch, replacing the ignition switch, if necessary, free of charge. The recall began May 10, 2019. Owners may contact Subaru customer service at 1‑844‑373‑6614. Subaru's number for this recall is WUF-91.
Recall number 19V297000 · Recall details
Electrical system: software
- What is wrong
- Subaru of America, Inc. (Subaru) is recalling certain 2018 Subaru Legacy and Outback vehicles. Due to a software error, the low fuel warning light may not illuminate at the intended remaining fuel level and the miles-to-empty display may incorrectly indicate a positive number despite the tank being empty.
- Risk
- The inaccurate fuel display may cause a driver to unexpectedly run out of fuel and the vehicle to stall, increasing the risk of a crash.
- Remedy
- Subaru will notify owners, and dealers will reprogram the combination meter software, free of charge. The recall began February 20, 2019. Owners may contact Subaru customer service at 1‑844‑373‑6614. Subaru's number for this recall is WTW-82.
Recall number 18V773000 · Recall details
Electrical system
- What is wrong
- Subaru of America, Inc. (Subaru) is recalling certain model year 2007-2009 model year Legacy and Outback vehicles, 2008-2014 Impreza vehicles and 2009-2013 Forester vehicles, all equipped with turbo-charged engines. The relay that controls the secondary air injection pump may fail, causing the pump to continuously operate and overheat.
- Risk
- If the air injection pump overheats, it may melt and increase the risk of a fire.
- Remedy
- Subaru will notify owners, and dealers will replace the secondary air injection pump relay, free of charge. The recall began December 2016. Owners may contact Subaru customer service at 1‑800‑782‑2783. Subaru's number for this recall is WTM-73.
Recall number 16V738000 · Recall details
Questions about the Subaru Legacy battery drain
Which Subaru Legacy years have battery drain or dead battery problems?
The model years with the most reports are 2019 (19 complaints), 2016 (13 complaints) and 2017 (13 complaints).
How much does it cost to fix battery drain or dead battery on the Subaru Legacy?
Owners who mentioned a price put the repair at about $300 (median of 5 complaints that include a dollar amount). Costs vary with mileage, warranty and where the work is done.
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