What drains the battery in a Subaru?
The battery in a Subaru can be drained by several factors, including leaving the lights on, a faulty alternator, extreme temperatures, and electrical issues. Understanding these common causes can help Subaru owners maintain their vehicle's battery and avoid unexpected breakdowns.
Leaving the Lights On
One of the most common reasons for a drained Subaru battery is leaving the lights on, either the headlights, interior lights, or even the trunk light. These lights can quickly drain the battery if left on for an extended period, even overnight. To prevent this, Subaru owners should always double-check that all lights are turned off before leaving the vehicle. 1 2
Faulty Alternator
The alternator in a Subaru is responsible for charging the battery while the engine is running. If the alternator is not functioning properly, it may not be able to keep the battery fully charged. This can lead to a gradual drain on the battery, especially during extended driving or when using electrical accessories. Subaru owners should have their alternator tested periodically to ensure it is working correctly. 3 4
Extreme Temperatures
Extreme temperatures, both hot and cold, can also contribute to a drained Subaru battery. In hot weather, the battery may lose its charge more quickly, while in cold weather, the battery's chemical reactions slow down, reducing its ability to hold a charge. To help mitigate these effects, Subaru owners should park their vehicle in a garage or shaded area when possible and consider using a battery maintainer or trickle charger during extended periods of non-use. 5 6
Electrical Issues
Finally, electrical issues within the Subaru's wiring or components can also drain the battery. This could be due to a short circuit, a malfunctioning electrical component, or even a parasitic drain from an aftermarket accessory. If a Subaru owner notices their battery draining more quickly than usual, they should have their vehicle inspected by a qualified mechanic to identify and address any underlying electrical problems. 7 8
By understanding these common causes of a drained Subaru battery, owners can take proactive steps to maintain their vehicle's battery and avoid unexpected breakdowns. Regular maintenance, proper usage of electrical accessories, and prompt attention to any battery or electrical issues can help ensure a Subaru's battery remains in good condition for years to come.
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.
What is draining my car battery when it's off?
Faulty Electrical Components: Malfunctioning parts, such as a faulty alternator or a short circuit, can cause excessive power draw, leading to battery drain. Leaving Lights or Accessories On: Accidentally leaving headlights, interior lights, or other accessories on can quickly drain the battery.
How do I stop my Subaru battery from draining?
Solutions 1. Buy the best battery you can, consider upgrading to a group 34 battery (not mentioned in video). 2. Don't leave anything on/open. 3. Charge your battery every few months. 4. Drive with headlights on. See why: How to Stop Your Subar... Please like and subscribe if you found this interesting or helpful.
Why is my car battery dead every morning?
“Electrical devices or lights left running, a defective charging system or alternator, and extreme weather are some common reasons but maybe it's just time to get a new battery.”
How to keep a Subaru battery charged?
Keep It Charged
To avoid this situation, it's best to use a battery maintainer or trickle charger if you're not going to use your Subaru for an extended period. These devices help keep your battery healthy and prevent the drain caused by modern vehicles' electronics even when parked.
Can you solve battery drain problem?
Limit internet connectivity and location access - Minimising mobile data, WiFi, Bluetooth, location services when not needed can help conserve battery. Turn on Airplane mode when mobile data isn't required. Also avoid battery draining apps like cameras and games. Don't keep lots of apps running in the background.
What is the average life of a Subaru battery?
between 3-5 years
Subaru batteries usually last between 3-5 years, but this is variable depending on the type of battery, driving habits, weather conditions, and more.
Why does my car battery keep dying when I don't drive it?
Your battery has a parasitic drain
A parasitic drain can occur when there's a short in the electrical system or when too many electronics and car accessories are connected to the car. Even if the car is turned off, there may be a constant drain on the battery.
How can I tell if my alternator is draining my battery?
Symptoms of a Bad Alternator
- Illuminated battery dashboard light.
- Low or abnormally high reading on the voltage gauge while driving (if equipped)
- Repeatedly dead batteries.
- Dim or overly bright lights.
- Underpowered or malfunctioning accessories (windows, radio, seat warmers, etc.)
What vehicle accessories would drain the battery?
Eight Silent Car Battery Drainers
- Headlights left on.
- Interior light left on.
- Accessory socket plug-ins.
- Key fob.
- Extreme hot or cold temperatures.
- Corrosion.
- Aftermarket car stereos.
- Car alarms.
