Experiencing issues with your Subaru key fob range or noticing it’s just not as responsive as it used to be? The likely culprit is a low or dead battery. While seemingly simple, understanding the factors affecting your subaru key fob battery life and knowing how to replace battery can save you from unexpected lockouts and frustration. This guide delves into common reasons for frequent battery replacements and offers solutions to extend battery life and ensure your key fob operates reliably.
One primary factor influencing how often you need to replace battery in your subaru key fob is the quality control of the CR2032 coin battery itself. Not all CR2032 batteries are manufactured to the same standards. Occasionally, even reputable brands might produce a battery that underperforms. If you have a battery tester, it’s a worthwhile step to check the new battery’s voltage before installing it in your fob. This proactive step can prevent premature failures. Remember to also test your physical emergency key to ensure it mechanically unlocks your door; this is a crucial backup, especially when dealing with potential fob issues. While you can still start your Subaru even with a fob that seems to have a dead battery (refer to your owner’s manual for the emergency start procedure), it’s still an inconvenient situation nobody wants to face. For reliable performance, especially if ordering batteries online, stick to well-known brands like Energizer or Duracell. For mail order Panasonics, ensure they are genuine to avoid counterfeit products.
Alt text: Tools needed for Subaru key fob battery replacement including a small screwdriver, new CR2032 battery, and a Subaru key fob.
Another common reason for quicker battery depletion is user habits. Do you frequently press the lock/unlock buttons on your subaru key fob multiple times as you approach or leave your vehicle? This habit, while common, significantly drains the battery faster. A simple solution is to utilize your Subaru’s touch-enabled locking and proximity unlocking features, if equipped. These features minimize button presses and can extend your subaru key fob battery life. If you find yourself habitually checking if your car is locked after walking away, consider using the MySubaru/Starlink app to remotely confirm and control your vehicle’s lock status, reducing unnecessary battery usage.
Alt text: Close-up of hands carefully opening a Subaru key fob to access and replace the CR2032 battery.
Furthermore, anecdotal evidence across various car brands suggests that keeping your subaru key fob too close to your vehicle when at home can also contribute to faster battery drain in both the fob and the car. The constant communication attempts between the fob and the vehicle, even when parked, can lead to increased power consumption. To mitigate this, store your key fob further away from your Subaru when you are at home, allowing the vehicle to fully enter its “sleep” mode. Alternatively, consider using a Faraday cage or a signal-blocking valet tray to store your fob at home, effectively preventing unwanted signal transmission and conserving battery life. By addressing these factors, you can optimize your subaru key fob battery performance and reduce the frequency of replacements.
Alt text: Comparison of different brands of CR2032 batteries commonly used for Subaru key fob replacement, highlighting brand names like Duracell and Energizer.
