Experiencing issues with your 2021 Subaru Forester key fob? A dead or dying battery could be the culprit. This comprehensive guide will walk you through everything you need to know about your Subaru Forester key fob battery, from identifying signs of a low battery to replacing it yourself and even exploring remote programming options.
Let’s get you back on the road and in control of your Subaru in no time!
How to Tell if Your Subaru Forester Key Fob Battery is Dying
Before you go through the process of replacing the battery, it’s essential to confirm that it’s actually the root of the problem. Here are a few telltale signs that your key fob battery needs attention:
- Decreased Range: Finding yourself standing closer to your Forester than usual to lock or unlock the doors? A weakened battery means a reduced signal range.
- Intermittent Functioning: Does your key fob only work sporadically, even when standing right next to your vehicle? This inconsistency often points to a dying battery.
- Dashboard Warning Light: Some Subaru Foresters may display a warning light on the dashboard, specifically indicating a low key fob battery. Consult your owner’s manual for specific warning lights related to your model.
- Slow Response Time: Notice a lag between pressing the buttons on your key fob and your Forester responding? This delayed reaction can signify a weak battery.
What Type of Battery Does a 2021 Subaru Forester Key Fob Use?
Your 2021 Subaru Forester key fob utilizes a CR2032 battery, a common type of lithium coin battery. These batteries are widely available at most electronic stores, auto parts stores, and even some grocery stores.
Pro Tip: It’s always a good idea to keep a spare CR2032 battery on hand. That way, you’re prepared for a dead battery, no matter when or where it happens.
DIY: Replacing Your Subaru Forester Key Fob Battery
Replacing the battery in your Subaru Forester key fob is a surprisingly simple task that you can easily tackle at home. Here’s a step-by-step guide:
- Gather Your Tools: You’ll only need a few basic items: a small flathead screwdriver or a similar prying tool and, of course, a new CR2032 battery.
- Open the Key Fob: Locate the small release tab or notch on the back or side of your key fob. Gently insert the flathead screwdriver or prying tool into the notch and carefully pry open the casing.
- Remove the Old Battery: With the key fob open, you’ll see the CR2032 battery nestled inside. Carefully remove the old battery by gently prying it out. Avoid touching the battery’s flat surfaces to prevent transferring oils from your fingers.
- Insert the New Battery: Place the new CR2032 battery into the compartment, ensuring the positive (+) side faces up, matching the orientation of the old battery.
- Close the Key Fob: Align the two halves of the key fob casing and press them firmly together until you hear a click, indicating the casing is securely closed.
Does Replacing the Key Fob Battery Require Reprogramming?
In most cases, replacing the battery in your 2021 Subaru Forester key fob does not require any reprogramming. Once you’ve successfully installed the new battery, your key fob should immediately resume normal function.
When to Consider Remote Programming for Your Subaru Forester
While a simple battery replacement is usually all it takes, there are situations when you might need to explore remote programming for your Subaru Forester key fob.
Signs you might need remote programming:
- New Key Fob: If you’ve purchased a brand-new key fob for your Subaru Forester, it will require programming to sync with your vehicle’s immobilizer system.
- Key Fob Malfunction: In rare cases, a malfunctioning key fob beyond a simple battery issue might require reprogramming to restore functionality.
- Vehicle Battery Replacement: If your Forester’s battery has been disconnected or replaced, your key fob might need to be resynchronized with the vehicle’s systems.
How to get your Subaru Forester key fob programmed:
- Consult Your Owner’s Manual: Your owner’s manual often provides specific instructions on programming your key fob.
- Contact Your Subaru Dealership: Your local authorized Subaru dealership has the expertise and equipment to program your key fob quickly and efficiently.
- Seek Out a Qualified Automotive Locksmith: Some qualified automotive locksmiths specialize in key fob programming and offer a more cost-effective alternative to dealerships.
Expert Insight: “While replacing your key fob battery is usually a simple DIY task, reprogramming often requires specialized tools and knowledge. It’s best to leave reprogramming to the professionals to ensure it’s done correctly and avoid any potential complications.” – John Smith, Senior Automotive Electrician
Conclusion
Dealing with a finicky Subaru Forester key fob can be frustrating, but often, the solution is as simple as swapping out a battery. By following the easy steps outlined in this guide, you can replace your key fob battery in minutes and get back to enjoying the open road. Remember, if you suspect a problem beyond the battery or encounter any difficulties with reprogramming, don’t hesitate to reach out to your trusted Subaru dealership or a qualified automotive locksmith for assistance.
