Wondering why your 2020 key fob battery seems to drain faster than expected? It’s a common concern, and several factors can influence the lifespan of your key fob battery. Let’s explore the primary reasons and offer some helpful solutions to maximize your key fob battery life.
Battery Quality Matters
The quality control of CR2032 coin batteries, the type commonly used in key fobs, can vary significantly. Not all batteries are created equal, and occasionally, a substandard battery might slip through quality checks. 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 from potential frustration later. For reliable replacements, consider reputable brands like Energizer or Duracell, which are known for reasonable quality and consistency.
Usage Habits and Button Pressing
Do you find yourself repeatedly pressing the lock/unlock buttons as you approach or leave your vehicle? This habit, often driven by impatience or habit, can indeed accelerate battery discharge. Each button press consumes battery power, and frequent, unnecessary presses will shorten the overall battery life. A practical solution is to utilize your vehicle’s touch-enabled locking and proximity unlocking features, if available. These features minimize the need for manual button presses. If you find yourself instinctively reaching for the buttons even after stepping away from your car, consider using your MySubaru/Starlink app (or your car’s equivalent app) to check vehicle status instead of repeatedly pressing the fob buttons.
Proximity to Vehicle and Battery Drain
There’s substantial evidence suggesting that keeping your smart fob too close to your vehicle can lead to a quicker drain on both the vehicle’s battery and the key fob battery itself. When the fob is in close proximity, it can continuously communicate with the vehicle, 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 or work. Alternatively, consider using a Faraday cage or a signal-blocking valet tray to store your fob. These devices effectively block signals, preventing unnecessary communication between the fob and your vehicle and preserving battery life for both.
By understanding these key factors, you can take proactive steps to extend the battery life of your 2020 key fob and avoid unexpected battery replacements.
