Is your car key fob becoming less responsive? Do you have to press the buttons multiple times to lock or unlock your doors? It might be a sign that the battery in your key fob is dying and needs replacing. Fortunately, changing the battery in your car key fob is a straightforward task you can often do yourself, saving time and money compared to visiting a dealership or mechanic.
While you could seek professional help from a car repair shop or even a battery specialist, replacing your key fob battery at home is entirely achievable. It’s considerably simpler than replacing your car’s main battery and usually only requires a few basic tools and a fresh battery. With a little care, you can easily restore your key fob to its optimal working condition.
Is your car key fob not working as reliably as it used to? The good news is that you probably have everything you need to revitalize your car key remote and get it working like new again.
Step-by-Step Guide to Replacing Your Key Fob Battery
Changing your key fob battery is a relatively simple process that can be completed in just a few minutes with the right tools. Here’s what you’ll typically need:
- A small, flat-head screwdriver or watch knife: This is used to gently pry open the key fob casing.
- A new replacement battery: Most key fobs use coin cell batteries, commonly CR2032. Check your fob for the exact type.
- A small Phillips head screwdriver (possibly): Some key fobs have tiny screws holding them together.
- Tweezers (optional): Tweezers can be helpful for handling the small battery.
- Your smartphone: Taking pictures during the process can be very helpful for reassembly.
Once you have gathered your tools and replacement battery, follow these steps:
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Open the Key Fob Casing: Carefully inspect your key fob to determine how it opens. Some have a small notch or slot designed for prying them open. Use your flat-head screwdriver or watch knife to gently wedge into this opening and twist to separate the two halves of the fob. Avoid forcing it, as you could damage the casing.
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Identify the Battery Type: Once the fob is open, locate the battery. Note the battery type printed on it. Common types are CR2032, CR2025, or CR1632. It’s crucial to replace it with the exact same type to ensure proper function and voltage.
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Remove the Old Battery: Some batteries are held in place by small clips or friction. Gently use your tweezers or fingertip to remove the old battery from its compartment. Pay attention to the orientation of the battery – specifically which side is facing up (+ or -).
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Insert the New Battery: Place the new battery into the compartment, ensuring the correct orientation (positive side up if that was the original orientation). Make sure it is securely seated in the holder.
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Close the Key Fob Casing: Carefully align the two halves of the key fob casing and snap them back together. Ensure they are firmly closed and that there are no gaps. If your fob has screws, tighten them gently.
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Test Your Key Fob: Press the buttons on your key fob to test if it is working correctly. The car doors should lock and unlock, and the panic button should function.
Store manager Joseph De La Rosa at Interstate All Battery Center of Surprise, Ariz., shows how it’s done. | Video: Joseph De La Rosa
Key Considerations When Changing Your Key Fob Battery
Before you start, here are a few important things to keep in mind to ensure a smooth and successful battery replacement:
Check Your Key Fob for Battery Size
Before disassembling your key fob, check if the battery type is indicated on the casing itself. Sometimes, the battery size is embossed on the back of the fob or inside the key compartment. This can save you a step and ensure you purchase the correct replacement battery beforehand. While CR2032 is a common size, different car makes and models, and even specific years, might use different batteries. For example, some Honda CR-V models require a CR1250 battery. Also, note that some key fobs, like those for Ford Mustangs, may require two batteries.
Take a Picture Before Removing the Old Battery
Car key fobs can have intricate internal layouts, and even fobs for the same car model can vary. Before you remove the old battery, take a picture of the inside of the key fob with your smartphone. This photo will serve as a valuable reference during reassembly, ensuring that all components, especially the battery orientation, are put back in the correct positions. This simple step can prevent frustration and potential damage, saving you from needing a complete key fob replacement.
Handle the Internal Components with Care
When your key fob is open, be cautious not to disturb the internal wiring or circuit board. These components are sensitive, and mishandling them could lead to malfunction, requiring you to reprogram your key fob or even replace it entirely. When removing the battery, use tweezers or a precision tool to gently lift it out. Some fobs may have small clips or metal pieces securing the battery. Carefully move these aside to remove the battery, but avoid pulling or dislodging any other internal parts. The electronic circuitry maintains your key fob’s programming to your car. Avoid disrupting it to prevent needing to reprogram your remote at the dealership.
Where to Get Key Fob Batteries and Professional Help
You can find replacement key fob batteries at most drugstores, supermarkets, and electronics stores. For a wide selection and expert advice, visit Interstate All Battery Center. In addition to batteries, Interstate All Battery Center also offers services for car key fob replacement and programming at select locations. If you encounter difficulties or prefer professional assistance, their experts can help.
Conclusion
Changing the battery in your car key fob is a simple and cost-effective DIY task that can save you from the inconvenience of a dead remote. By following these steps and taking a little precaution, you can easily restore your key fob to its optimal functionality. For all your battery needs, including car key fob batteries and car batteries, remember to check out Interstate All Battery Center for reliable products and expert services.
