It’s a common frustration for 2020 Subaru owners: a seemingly short lifespan for their key fob batteries. If you’re experiencing unexpected battery drain in your Subaru key fob, you’re not alone. Several factors can contribute to this issue, and understanding them is the first step to finding a solution.
One primary reason for premature 2020 Subaru Key Fob Battery depletion can be traced back to the quality control of the CR2032 coin batteries themselves. Not all CR2032 batteries are manufactured to the same standards. Even within reputable brands, occasional faulty batteries can slip through quality checks. If you have a battery tester, it’s a worthwhile step to check a new battery before installing it in your fob. This simple check can save you from the inconvenience of installing a weak battery from the outset. While you can still typically enter and start your Subaru even with a low fob battery, it’s still an unwelcome surprise. It’s also wise to periodically check your physical emergency key to ensure it works correctly as a backup.
User habits also play a significant role in 2020 Subaru key fob battery longevity. Do you find yourself repeatedly pressing the lock or unlock buttons as you approach or leave your vehicle? This habit, while common, significantly increases battery usage. Each button press sends a signal, drawing power from the battery. A more battery-friendly approach is to utilize your Subaru’s touch-enabled locking and proximity unlocking features, if equipped. For those moments of uncertainty after walking away from your car, resist the urge to compulsively press the fob buttons; instead, consider using the MySubaru/Starlink app to confirm your vehicle’s lock status.
Another often-overlooked factor contributing to rapid 2020 Subaru key fob battery drain is the proximity of the fob to the vehicle when not in use. Evidence suggests that keeping your key fob too close to your Subaru can create a continuous communication loop, causing battery drain in both the fob and the car itself. To mitigate this, store your key fob further away from your vehicle when you are at home. Alternatively, consider using a Faraday cage or valet box to store your fob. These devices block electromagnetic fields, preventing communication between the fob and the car and conserving battery life.
In conclusion, if you’re facing frequent battery changes in your 2020 Subaru key fob, consider these potential culprits: battery quality, button usage habits, and fob proximity to the vehicle. By addressing these factors, you can optimize the battery life of your 2020 Subaru key fob and minimize unexpected replacements.
