Is your car key fob becoming less responsive? Do you have to press the buttons multiple times to lock or unlock your doors? It’s a common sign that your key fob battery is dying and needs replacing. But where do you go to get a new key fob battery? You might be surprised to learn you have several convenient options.
Replacing your key fob battery is generally a straightforward process, often simpler than changing your car’s main battery. While you could seek professional help, changing the battery yourself is often a quick and cost-effective solution. Let’s explore where you can source a new battery and how to get your key fob working like new again.
DIY Key Fob Battery Replacement: A Simple Guide
For many car owners, replacing the key fob battery is a task they can easily handle at home. 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.
- The correct replacement battery: Most key fobs use coin cell batteries, commonly the CR2032. We’ll discuss how to identify the right type shortly.
- Precision screwdriver (possibly): Some fobs use tiny screws to secure the case. Sizes between 1.4mm and 2.4mm are common.
- Tweezers: Helpful for handling the small battery.
- Your smartphone: To take photos for reference during disassembly.
Opening a key fob with a watch knife is easy, as Mike Harris, Interstate All Battery Center manager of production and engineering shows. | Image: Mike Harris
Once you have your tools and new battery, the replacement process is usually as simple as:
- Open the Fob: Carefully pry open the key fob casing using your flat-head screwdriver or watch knife. Look for a small notch or seam to start.
- Remove the Old Battery: Gently take out the old battery. Note its orientation (+ side up or down).
- Insert the New Battery: Place the new battery in the same orientation as the old one.
- Close the Fob: Snap the key fob case back together until it’s securely closed.
Where to Purchase Your Key Fob Battery
Now that you know how simple DIY replacement can be, the next question is: where do you actually buy a new key fob battery? You have several convenient options:
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Auto Parts Stores: Stores like AutoZone, Advance Auto Parts, and O’Reilly Auto Parts typically stock a wide range of automotive batteries, including key fob batteries. They often carry common sizes like CR2032 and can help you identify the correct battery for your specific vehicle.
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Battery Specialty Stores: Retailers specializing in batteries, such as Interstate All Battery Center, offer a comprehensive selection of batteries, including those for key fobs. These stores often have knowledgeable staff who can assist you in finding the exact battery you need and may even offer key fob battery replacement services.
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General Retail Stores: Big box stores like Walmart and Target, as well as drugstores like Walgreens and CVS, usually carry coin cell batteries in their battery or electronics sections. This can be a convenient option if you need a battery quickly and are already shopping at these locations.
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Online Retailers: Online marketplaces like Amazon and eBay offer a vast selection of key fob batteries at competitive prices. This can be a good option if you are not in a rush and want to compare prices or buy in bulk.
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Car Dealerships and Repair Shops: While potentially the most expensive option, your car dealership or local mechanic can certainly replace your key fob battery. This might be a convenient choice if you are already taking your car in for service.
Determining the Correct Key Fob Battery Size
Before heading out to buy a new battery, it’s crucial to determine the correct size for your key fob. While CR2032 is a very common type, others exist.
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Check Your Key Fob Casing: Many key fobs have the battery type embossed on the back or inside the battery compartment. Look for markings like “CR2032,” “CR1620,” or similar codes.
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Consult Your Owner’s Manual: Your vehicle’s owner’s manual may specify the correct key fob battery type.
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Open Your Key Fob (Carefully): If you can’t find the battery type externally, gently open your key fob and take a look at the battery itself. The battery type is usually printed directly on it. Crucially, take a picture with your phone before removing the battery to remember the orientation and internal components.
It’s worth noting that battery requirements can vary depending on the car’s year, make, and model. For example, while many cars use a single CR2032, some, like certain Honda CR-V models, may require a CR1250, and others, like some Ford Mustangs, might use two batteries. Always double-check to avoid purchasing the wrong battery.
When to Consider Professional Key Fob Battery Replacement
While DIY replacement is often easy, there are situations where seeking professional help is advisable:
- If you are uncomfortable opening the key fob: If you are worried about damaging the fob casing or internal components, professional replacement can give you peace of mind.
- If your key fob requires programming after battery change: In rare cases, some vehicles might require key fob reprogramming after a battery change. Dealerships or specialized key fob services can handle this.
- If you need a key fob replacement altogether: If your key fob is damaged, lost, or malfunctioning beyond just battery issues, you might need a complete key fob replacement. Interstate All Battery Center and dealerships are good places to inquire about key fob replacement services.
Conclusion: New Life for Your Key Fob is Within Reach
Replacing your car key fob battery is a simple maintenance task that can restore convenience and reliability to your vehicle access. You have numerous options for where to get a new key fob battery, from auto parts stores and battery specialists to general retailers and online marketplaces. By identifying the correct battery type and following a few simple steps, you can often complete the replacement yourself. However, professional help is readily available if you prefer or encounter any issues. Don’t let a dead key fob battery leave you stranded – get a new battery and keep your car accessible and secure.
