Just like any other battery in your car, the one in your key fob will eventually need replacing. Are you finding yourself pressing the unlock button multiple times before your car responds? It might be time to consider a key fob battery replacement. While it might seem daunting, changing your key fob battery is a straightforward task you can easily handle yourself, saving you a trip to the dealership or repair shop. Knowing the correct Key Fob Battery Type is the first step to a successful and quick fix.
Replacing your car key fob battery is generally simpler than replacing your car’s main battery. It requires minimal tools, a fresh battery, and a little bit of careful attention. However, if you’re not cautious during the process, you might risk damaging your key fob, potentially leading to a need for a complete key fob replacement. But before you worry, the good news is that you likely already have everything you need to breathe new life into your car key remote.
Before you embark on replacing your key fob battery, identifying the correct key fob battery type is crucial. You don’t want to disassemble your key fob only to realize you’ve purchased the wrong replacement. While many car key fobs utilize a standard watch battery, specifically the CR2032 coin cell, variations exist depending on your car’s year, make, and model. For example, some Honda CR-V models require a CR1250 battery. Furthermore, while most key fobs use a single battery, certain models, like some Ford Mustang key fobs, require two.
The best way to determine your key fob battery type is to check your key fob itself. Examine the back of your car key fob or inside the key sleeve for any embossed letters or numbers. Manufacturers often indicate the battery type directly on the fob casing. Look for markings like “CR2032” or similar codes.
If your key fob doesn’t explicitly show the key fob battery type, don’t worry. You can still determine it by carefully opening the case. Here’s a step-by-step guide to safely replace your key fob battery:
Tools You’ll Need:
- A thin, flat blade: A watch knife or small flathead screwdriver works well for prying open the case.
- Replacement battery: Once you identify the key fob battery type (likely a CR2032 or similar coin cell), purchase a new one.
- Precision screwdriver (possibly): Some fobs use tiny screws, requiring a 1.4mm to 2.4mm precision screwdriver.
- Tweezers: Useful for handling the small battery.
- Your smartphone: To take pictures as a reference.
Step-by-Step Key Fob Battery Replacement:
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Pry Open the Fob: Gently insert your thin blade into the seam of the key fob case. Many cases have a small notch to help you get started. Avoid forcing it open from just one point, which could damage the case. Instead, carefully wedge your tool around the entire perimeter, gradually separating the fasteners.
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Identify the Battery Type: Once open, you’ll see the battery. Now you can clearly see the key fob battery type printed on the old battery itself if you couldn’t find it on the case exterior. Note this down to ensure you purchase the correct replacement.
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Take a Picture: Before removing the old battery, take a picture of the internal layout, especially the battery orientation (+/- sides) and the position of any small components. Key fobs can vary internally, and this photo will be a valuable reference during reassembly.
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Remove the Old Battery: Use tweezers or your fingertip to carefully remove the old battery. Some fobs might have a small clip or fastener holding the battery in place; gently move it aside to release the battery.
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Insert the New Battery: Install the new key fob battery type, ensuring the correct polarity (positive and negative sides) matches the orientation you noted or photographed.
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Close the Case: Carefully snap the key fob case back together, ensuring it’s firmly closed. You should hear a click as the fasteners engage.
Important Reminders:
- Gentle is Key: Avoid excessive force when opening the key fob to prevent damage.
- Don’t Disturb Internal Components: Be careful not to touch or dislodge any wiring or the circuit board inside the fob. These components are sensitive, and disturbing them could require reprogramming or even a complete key fob replacement.
- Correct Battery Type Matters: Always use the correct key fob battery type specified for your vehicle. Using the wrong type might lead to improper function or damage to your key fob.
By following these steps and taking your time, you can easily replace your key fob battery and restore your remote’s functionality. Knowing your key fob battery type beforehand will save you time and ensure you get the right replacement the first time. If you’re ever unsure or prefer professional assistance, Interstate All Battery Center locations offer key fob battery replacement services and can help you find the correct key fob battery type for your vehicle.
