It’s a common frustration for Subaru owners: the dreaded dead key fob battery. While seemingly simple, a few factors can significantly impact how long your Subaru key fob battery lasts. Understanding these can not only save you from unexpected lockouts but also optimize the lifespan of your key fob. Let’s delve into the primary reasons behind a quickly draining Subaru key fob battery and what you can do about it.
One key factor is the quality control of the CR2032 coin battery itself. Not all batteries are created equal. Even with reputable brands, occasionally a faulty battery slips through. If you have a battery tester, it’s a worthwhile quick check before installing a new battery in your fob. This preemptive step can save you from potential headaches down the road. Speaking of preparedness, it’s always wise to verify your emergency mechanical key operates smoothly in your Subaru’s door lock. This ensures you’re not stranded should technology fail. And remember, even with a completely dead fob battery, you can still start your Subaru using specific procedures detailed in your owner’s manual. Familiarizing yourself with this process is highly recommended for peace of mind. For reliable replacement batteries, established brands like Energizer or Duracell are readily available and offer consistent performance. While Panasonic batteries are also an option, ensure you are sourcing genuine ones, especially when ordering online.
Another common culprit for rapid battery depletion is user habits. Are you someone who habitually presses the lock/unlock buttons multiple times as you approach or leave your Subaru? This repeated button pressing consumes battery power unnecessarily. A smarter approach is to utilize Subaru’s touch-enabled locking and proximity unlocking features if your model is equipped with them. These features are designed to minimize battery usage by automating locking and unlocking. If you find yourself still compulsively checking if your car is locked after walking away, consider using the MySubaru/Starlink app to confirm, rather than repeatedly pressing the physical key fob buttons.
Furthermore, anecdotal evidence across various car brands, including Subaru, suggests that storing your key fob too close to your vehicle can lead to faster battery drain in both the fob and the car. The constant communication attempts between the fob and the vehicle, even when the car is off, can contribute to this drain. To mitigate this, store your key fob further away from your Subaru when at home. Alternatively, consider purchasing a Faraday cage or a signal-blocking valet box to store your fob. These devices effectively block the fob’s signal, preventing unnecessary communication and preserving battery life.
By understanding these factors – battery quality, usage habits, and fob proximity – you can take proactive steps to extend the life of your Subaru key fob battery and avoid unexpected replacements.
