It’s a common experience for Subaru owners: the dreaded dead key fob battery. While seemingly sudden, several factors can contribute to how often you need a Subaru Key Fob Battery Replacement. Understanding these reasons can not only save you from unexpected lockouts but also help extend the life of your key fob battery.
One primary factor is the quality of the CR2032 coin battery itself. Not all batteries are created equal, and even within reputable brands, occasional faulty batteries can slip through quality control. If you’re proactive, a battery tester can be a worthwhile investment to check a new battery’s charge before installing it in your fob. It’s also crucial to regularly check your physical emergency key to ensure it works in the door lock, as a backup plan. Familiarizing yourself with the process to start your Subaru with a dead fob, as demonstrated in various online videos, can also prevent stressful situations. For reliable replacements, established brands like Energizer or Duracell are generally recommended for consistent performance.
User habits also play a significant role in battery longevity. Do you frequently press the lock and unlock buttons multiple times as you approach or leave your Subaru? This common habit of repeatedly pressing buttons accelerates battery drain. A more battery-friendly approach is to utilize your Subaru’s touch-sensitive locking and proximity unlocking features, if equipped. For those moments of doubt after walking away, the MySubaru or Starlink app offers a convenient way to confirm your vehicle is locked without further battery usage.
Another less obvious factor impacting Subaru key fob battery life is the proximity of the fob to the vehicle when not in use. Evidence suggests that storing your key fob too close to your Subaru can lead to a quicker battery discharge in both the car and the fob. To mitigate this, keep your key fob at a distance from your vehicle when at home, allowing the car to fully enter its “sleep” mode. Alternatively, consider using a Faraday cage or valet box to store your fob, which blocks signals and prevents unnecessary battery drain.
By considering these factors – battery quality, usage patterns, and storage habits – you can proactively manage your Subaru key fob battery life and minimize the need for frequent replacements.
