Is your car key fob starting to act up? Maybe you have to press the button multiple times to unlock your doors, or the range seems to have diminished. Before you rush to the dealership or assume you need a costly key fob replacement, the solution might be as simple as changing the battery. Yes, you can replace your car key fob battery yourself, and it’s easier than you might think! This guide will walk you through the process of how to change battery in car key fob, saving you time and money.
While replacing a car battery can be a more involved task, tackling your key fob battery is a quick and straightforward DIY project. With just a few common household tools and a fresh battery, you can breathe new life into your car remote. Let’s dive into how you can easily change your car key fob battery and get your remote working like new again.
Tools You’ll Need to Replace Your Key Fob Battery
Before you begin, gather these simple tools to make the process smooth and efficient:
- A thin, flat tool: A watch knife or a small flathead screwdriver works perfectly for gently prying open the key fob casing.
- Replacement Battery: Most key fobs use a CR2032 coin cell battery, readily available at most drugstores, supermarkets, and electronics stores. However, it’s always best to double-check your key fob for the correct size.
- Precision Screwdriver (possibly): Depending on your key fob model, you might need a small Phillips head screwdriver (around 1.4mm to 2.4mm) to remove tiny screws.
- Tweezers: These are helpful for grabbing and maneuvering the small battery, especially in tight spaces.
- Your Smartphone: Taking pictures during the process can be a lifesaver, especially when noting the battery orientation.
![Opening a car key fob casing using a watch knife. Gentle prying around the edges helps to safely access the battery compartment for replacement.] (/-/media/project/interstate-batteries/redesign/blogs/articles/key-fob-batteries/keyfob1-new.jpg)
Step-by-Step Guide to Replacing Your Car Key Fob Battery
Now that you have your tools ready, let’s get started with the battery replacement:
Step 1: Open the Key Fob Casing
Carefully inspect your key fob to determine how it opens. Some fobs have a small notch or seam that indicates where to pry. Using your watch knife or flathead screwdriver, gently insert the tool into the notch or seam. Apply gentle pressure to pry the case open. Avoid forcing it, as you could damage the casing. Work your tool around the perimeter of the fob, gently separating the top and bottom halves. Think of it like carefully peeling an orange – be patient and work your way around.
Step 2: Remove the Old Battery
Once the key fob is open, you’ll see the battery. Take a moment to note the orientation of the battery – specifically, which side is facing up (+ or -). This is where your smartphone comes in handy; take a quick picture for reference! Some batteries are held in place by small clips or a sliding metal piece. If present, gently move these aside. Use your tweezers or your fingertip to carefully lift the old battery out of its compartment.
Step 3: Insert the New Battery
Take your new battery, ensuring it’s the correct type (check the old battery or your owner’s manual if unsure). Install the new battery in the same orientation as the old one. Refer to the picture you took if needed. Make sure the battery is securely seated in its compartment.
Step 4: Close the Key Fob Casing
Carefully align the two halves of the key fob casing and snap them back together. Press firmly until you hear or feel the case click securely closed. Ensure there are no gaps and the case is completely sealed.
Important Tips and Warnings When Changing Your Key Fob Battery
- Check for Battery Size Beforehand: Before you even open your key fob, check the back or inside the key sleeve for any markings indicating the battery type. While CR2032 is common, variations exist depending on your car’s year, make, and model. For example, some Honda CR-V models use a CR1250 battery, and some Ford Mustang fobs take two batteries. Knowing this beforehand prevents a trip back to the store.
- Take a Picture Before Removing the Battery: As mentioned earlier, this simple step can save you headaches. Key fobs can have intricate internal layouts, and a photo ensures you put everything back correctly, especially the battery orientation.
- Handle with Care, Avoid the Circuit Board: Be gentle when opening the fob and removing the battery. Avoid touching or disturbing any of the wiring or the circuit board inside the key fob. These components are sensitive, and damage could lead to needing a complete key fob replacement and reprogramming. Focus solely on the battery compartment.
Where to Get Key Fob Batteries and Professional Help
You can find replacement key fob batteries at various locations, including:
- Drugstores and Supermarkets: Pharmacies and grocery stores usually stock common coin cell batteries like CR2032 in their battery or electronics sections.
- Electronics Stores: Stores specializing in electronics will have a wide selection of batteries, including those for key fobs.
- Automotive Parts Stores: Auto parts retailers also carry car key fob batteries and can often assist you in finding the correct type.
- Interstate All Battery Center: For a trusted source of batteries and key fob services, visit your local Interstate All Battery Center. They offer a wide range of batteries and, at select locations, provide key fob replacement and programming services.
If you’re uncomfortable changing the battery yourself or encounter any issues, professional help is readily available. Car dealerships, auto repair shops, and battery centers like Interstate All Battery Center can replace your key fob battery for you. They can also assist with more complex key fob issues or replacements if needed.
Conclusion
Changing your car key fob battery is a simple and rewarding DIY task that can save you money and keep your car access smooth and reliable. By following these steps and taking a little care, you can easily replace your key fob battery and avoid the inconvenience of a dead remote. So, next time your car key fob starts to weaken, remember you have the power to fix it yourself!
