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How do I stop my Subaru battery from draining?


As a Subaru owner, you may have experienced the frustration of a battery that drains unexpectedly. This issue can stem from various factors, including electrical system problems, parasitic draws, or simply an aging battery. In this article, we will explore effective strategies to prevent your Subaru's battery from draining, ensuring your vehicle remains reliable and ready to go when you are.


Understanding Battery Drain


Before diving into solutions, it's essential to understand what causes battery drain. Here are some common culprits:



  • Parasitic Draws: Electrical components that continue to draw power even when the vehicle is off, such as lights, radios, or alarm systems.

  • Aging Battery: Batteries typically last between 3 to 5 years. An old battery may not hold a charge effectively.

  • Faulty Alternator: If the alternator is not charging the battery properly, it can lead to a drained battery.

  • Extreme Temperatures: Both hot and cold weather can affect battery performance and lifespan.


Steps to Prevent Battery Drain


Here are some practical steps you can take to prevent your Subaru's battery from draining:



  • Regular Maintenance: Schedule regular check-ups with a trusted mechanic to ensure your battery and electrical system are in good condition.

  • Check for Parasitic Draws: If you suspect a parasitic draw, use a multimeter to measure the current draw when the vehicle is off. Disconnect fuses one at a time to identify the source.

  • Battery Health Check: Have your battery tested regularly, especially if it’s older than three years. Many auto parts stores offer free battery testing.

  • Disconnect When Not in Use: If you plan to leave your Subaru unused for an extended period, consider disconnecting the battery to prevent drain.

  • Use a Battery Maintainer: If you frequently leave your vehicle parked for long periods, a battery maintainer can keep the battery charged without overcharging it.


Conclusion


By understanding the causes of battery drain and implementing these preventive measures, you can keep your Subaru's battery in optimal condition. Regular maintenance and awareness of your vehicle's electrical system will go a long way in ensuring that you never find yourself stranded with a dead battery. If you have any concerns or need assistance, don't hesitate to reach out to a professional auto service for help.


Frequently Asked Questions

What is draining my car battery when its off?


Unplug Extra Accessories: Known as parasitic draw, your car battery can drain from stereo components and phone chargers that continue to work when the car is turned off. Also, be on the lookout for glove-box lights, trunk lights, and interior lights that remain illuminated.



What Subaru models are being draining battery?


According to the Subaru battery settlement website, the Subaru vehicles in the lawsuit settlement include the 2015-2020 Subaru Outback, 2015-2020 Subaru Forester, 2015-2020 Subaru Legacy sedan, 2015-2020 Subaru WRX, and 2019-2020 Subaru Ascent 3-Row SUVs.



How do I stop my battery from draining on its own?


  • Turn off auto sync. There's no need to update your mail so many times in an hour, unless you're an important employee.
  • Reduce brightness. Your eyes will get damaged if you turn it brighter, you know?
  • Turn off WiFi & mobile data when not in use. Focus on your life more than others.
  • Close apps properly.



How to keep a Subaru battery charged?


I have two recommendations; drop a charge into the battery every couple of weeks using an external battery charger, or turn on your head lights or parking lights when you drive during the day time. Sounds crazy but it fools the charging system into continuously charging the battery.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.