Parasitic Battery Drain Subaru, May 30, 2023 · Problems: -Parasitic drain from DCM while car isn’t running -Removing the DCM fuse fixes the parasitic drain but results in losing the front speakers and microphone -(Starlink too but I don't use it) Fix: -Power for DCM while car is running and no power for DCM while car isn’t running Here’s Mar 8, 2024 · When I came home on the 3rd, the car Seemed to have a dead battery and did not start. By the time an owner gets back to their car, there's not enough power to crank the engine. I leave my car on a charger if I’m not driving for a few days! Dec 21, 2025 · Have a good look around for hidden fuses or anything wired directly to the battery. Jan 15, 2026 · Parasitic battery drain is the issues but I bought my car used with 75 k , I see the battery was replaced once . Subaru has allegedly known about this issue since 2014. Confirmed something is pulling too much power while the car is off Pulled and replaced fuses methodically to find draw until i hit fuse #9 (DCM) Multimeter reads . . Next week Subaru is checking battery leads and electrical system to see if something is draining the battery unnecessarily per SOA advice. It’ll kill starlink, but impacts nothing else. Black multimeter tip to battery terminal; red to battery cable. There was a law suit not sure if it’s covered at this point. Is there any other way to determine if the DCM is causing parasitic drain on the battery other than the Subaru dealership? They want to charge me $173 just for the diagnostic. I performed a draw test at the battery negative terminal, with the following results: The current draw would drop to approximately 25ma after just 3-5 minutes, but if I watched it for a short Jul 7, 2021 · Instead, the system continues to draw power from the battery which is known as a parasitic drain. Dealer service acknowledged that there was a slight battery drain but could not find the issue. From an aging battery to issues with the charging system or even parasitic drain, there are several reasons why your Subaru’s battery might not be holding a charge. The cheapest + best fix (~ $300) contains 3 parts: 1- Remove your DCM fuse. Take proactive steps to prevent Subaru car battery drain and enjoy uninterrupted driving experiences. Explore causes and fixes for Subaru battery issues. Nov 1, 2023 · If engine idling voltage is less than 13vdc, either the alternator or the drive belt system is faulty. Try getting a better battery and being careful leaving doors/trunk open. As of September 2021 I've replaced 3 batteries and about to put my 4th in. Jun 20, 2023 · Well guys I bought a 2019 Subaru Crosstrek had it for about a year got mad at the radio punched the radio power button so my radio kept shutting on and off by itself and then every day I’d come out to my car I would have to jumpstart it because the battery would go dead because the DCM modules Feb 19, 2025 · While it's easy to blame the battery itself, the real culprit could be something more complex. 90% of the issue is parasitic drain from a faulty DCM. Sep 26, 2021 · I have a 2016 legacy 2. 01-. This feeds. Connect a Multimeter: Set your multimeter to measure current (Amps) and connect it between the negative battery post and the negative cable. There’s 100% a parasitic drain on your battery, and with 99% certainty I can tell you EXACTLY what is causing it, even though apparently Subaru can’t/won’t. Is their an alarm system fitted? Step 2: Check for Parasitic Drain Disconnect the Negative Battery Cable: With the vehicle off, disconnect the negative cable from the battery. 080 amp) should be investigated. Aug 28, 2021 · I have a 2009 2. Lower is better, but anything more than this would start causing a dead battery, and you can start hunting. May 30, 2023 · Dark current drain I think I have found the cause of the current drain that was killing my battery in my 2017 Outback. ” Advice? Sep 23, 2025 · This guide breaks down exactly why your Subaru’s battery keeps dying, which models are affected, and what you can do about it today – whether you’re facing the dreaded DCM parasitic drain or other electrical gremlins. 5 limited. 6 amp drain then when i pull the fuse it drops to 0. The original battery was 5 years old and on occasion after sitting for several days would need to be jump started. 😀 Note: the dealer is going to cover the cost of replacing the DCM module so it will be a free “repair. This guide helps owners prevent failure, tackle parasitic drain, and enhance reliability. 050-0. This Service Information Bulletin outlines a systematic procedure for diagnosing parasitic draw (dark/standby current) in vehicles experiencing battery drain when the ignition is off, leading to Dec 22, 2017 · Subaru just replaced the power rear hatch control module. Preformed “parasitic drain test” Multimeter reads . 5 premium and replaced the factory battery in April this year with another factory battery. Sep 23, 2025 · This guide breaks down exactly why your Subaru’s battery keeps dying, which models are affected, and what you can do about it today – whether you’re facing the dreaded DCM parasitic drain or other electrical gremlins. After researching we found that a “parasitic battery drain” was a common issue on Subaru’s from 2015-2020 related to the starlink. Oct 2, 2024 · I can't be the only one that Subaru has not fixed the Parasitic battery drain problem in their car? It is ridiculous that as Subaru Outback owner that you need to purchase a battery pack and keep it in your car for when the car won't start when you are out and about with it. I have a battery drain / parasitic load issue. You can google search ‘parasitic battery drain’ but you’re on the right track with the DCM. Any parasitic drain above approximately 50-80 milliamp (0. 00A (0-10ma) with #9 (DCM Sep 30, 2022 · Class action settlement revealed that the OEM Subaru battery did not have the capacity to support the vehicle's electrical components. The only way to determine if an electrical problem is draining the battery is connecting an amp meter inline to either battery positive or negative. If it is high I'd give it an extra 5 minutes to make sure it's actually an parasitic drain and not just things waiting to go to sleep. Nov 2, 2023 · Will the Subaru dealer remove the DCM for me or is that something that’s a liability for them? I am suffering from the parasitic battery drain syndrome. 06 amps. Replacement batteries are nice, but don't solve the problem ∞ Feb 19, 2025 · From an aging battery to issues with the charging system or even parasitic drain, there are several reasons why your Subaru’s battery might not be holding a charge. There’s 100% a parasitic drain on your battery, and with 99% certainty I can tell you EXACTLY what is causing it, even though apparently Subaru can’t/won’t. Jul 7, 2021 · Instead there appears to be a parasitic drain that draws power from the battery when the vehicles are turned off. 15A (150ma) all fuses plugged in. After this idle period, you should be pulling NO MORE THAN 50 milliamps of current off the battery. By addressing electrical system malfunctions, identifying parasitic drains, managing extreme temperatures, considering battery age, and preventing infrequent use-related drain, you can ensure a long-lasting and trouble-free battery performance. 6 days ago · Why does your car battery keep dying overnight? Learn what parasitic battery drain is, how to test for it using a multimeter, and when it’s time to visit Batteries Plus for a replacement. Multiple class-action lawsuits allege that Subaru has known about this problem since 2014. I did a drain check and on Fuse 9 under hood/main fuse box I get 0. I just came back from a 2 week vacation and I needed to charge the By addressing electrical system malfunctions, identifying parasitic drains, managing extreme temperatures, considering battery age, and preventing infrequent use-related drain, you can ensure a long-lasting and trouble-free battery performance. iik7o, djdbpt, cpdast, u12g, h2w12, ze5h, ugrd, epmw, xlfr, xadbd,