It’s a common scenario: you’re heading to your Subaru, reach for the door handle, and nothing happens. Your key fob is likely the culprit, and more often than not, a dead battery is the reason. While it might seem daunting, replacing the battery in your Subaru key fob is a straightforward process you can easily handle yourself. This guide will walk you through why your Subaru key fob battery might be draining faster than expected and how to replace it efficiently.
Understanding Key Fob Battery Drain
Several factors can contribute to the lifespan of your Subaru key fob battery. It’s not always just down to battery quality, although that certainly plays a role.
Battery Quality and Consistency
The CR2032 coin battery is the standard power source for most Subaru key fobs. However, like any manufactured product, quality control can vary. Occasionally, even within reputable brands, a battery might underperform or fail prematurely. If you have a battery tester, it’s a worthwhile step to quickly check a new battery before installing it in your fob. This simple check can save you potential frustration down the line. For reliable replacements, established brands like Energizer or Duracell are generally recommended for their consistent quality.
Usage Habits: Are You Overusing Your Fob?
Do you find yourself repeatedly pressing the lock and unlock buttons as you approach or leave your vehicle? This habit, while common, can significantly drain your key fob battery faster. Each button press consumes power. A smarter approach is to utilize Subaru’s touch-enabled locking and proximity unlocking features, if your model is equipped with them. These features minimize battery drain by automating the locking/unlocking process. If you’re ever unsure if you’ve locked your car after walking away, instead of compulsively pressing the fob buttons, consider using the MySubaru or Starlink app to check and control your vehicle remotely.
Proximity Issues: Keep Your Fob at a Distance
There’s increasing evidence suggesting that keeping your key fob too close to your Subaru when parked can lead to battery drain in both the vehicle and the fob. When the fob is constantly within range, it can maintain communication with the car, preventing both from fully entering a power-saving “sleep” mode. To mitigate this, store your key fob further away from your vehicle when you’re at home. Alternatively, consider using a Faraday cage or signal-blocking pouch to store your fob. These devices block the fob’s signal, preventing unnecessary communication with your Subaru and preserving battery life.
Don’t Forget Your Emergency Key
Regardless of battery life, it’s crucial to ensure your mechanical emergency key works. This key is your backup access method should your fob battery completely fail or if you encounter electronic issues. Take a moment now to check that your emergency key properly unlocks your car door. Knowing it works can provide significant peace of mind.
By understanding these factors and taking proactive steps, you can maximize the battery life of your Subaru key fob and avoid unexpected lockouts. Replacing the battery itself is an easy task, but preventative measures can save you time and hassle in the long run.
