change battery key fob

How Do You Change A Key Fob Battery

How Do You Change A Key Fob Battery? Key fobs have become an almost indispensable convenience for modern car owners, functioning as remote controls for locking, unlocking, and even starting vehicles. However, when the battery in your key fob begins to drain, you might find yourself unable to use these handy features. Changing a key fob battery is a straightforward process that you can do at home with a few simple tools.

Identify Your Key Fob Battery Type

Before you begin the process of replacing the battery in your key fob, it’s crucial to first identify the specific type of battery it requires. Key fobs typically use one of the common 3-volt coin-shaped lithium batteries, such as the CR2025 or CR2032. These batteries are not interchangeable due to their differing sizes, so selecting the correct type is essential for the functionality of your key fob.

  • Consult Your Vehicle’s Owner Manual. This document is a comprehensive resource that provides detailed information about various components of your vehicle, including the key fob. The manual usually lists specifications such as the battery type and replacement instructions, making it a reliable source for this information.
  • Inspect the Battery. If you prefer a more direct approach, you can open the key fob to check the battery itself. Most key fobs are designed with user access in mind, featuring a small slot or compartment that can be opened, often without tools. Inside, you will find the battery, which typically has its model number printed on it.
  • Visit the Manufacturer’s Website. If you do not have access to the owner’s manual and are hesitant to open the key fob yourself, the manufacturer’s website can be a helpful resource. Look for the specifications section for your specific vehicle model, where details about the key fob battery type are often listed.
Gather Your Tools

Opening your key fob is a task that can generally be accomplished with a few basic tools, depending on the specific design of the fob. Typically, you might need a small flathead screwdriver. This tool is useful for prying open the casing of the key fob. Alternatively, you can use a coin, such as a dime or quarter, which can be inserted into a slot or notch on the fob and used to twist or pry the case open.

In addition to the tool for opening the fob, you will also need a replacement battery. The type of battery required depends on your specific key fob model, but it is often a small button cell. These batteries are widely available and can be found in various retail locations.

Before attempting to open your key fob, it is advisable to consult the owner’s manual or look up online tutorials specific to your vehicle’s model. This ensures you understand the specific requirements and steps involved in opening the fob without causing damage.

battery change key fob
Open the Key Fob

Opening your key fob can vary slightly depending on the make and model of your car. Here’s a general guide:

  • Pry Open Type. Insert the flathead screwdriver or coin into the notch. Gently twist to pry open the fob. Be careful not to apply too much force, as this can damage the fob.
  • Slide Open Type. Some fobs have a slider on the back. Simply slide it to open the casing.
  • Screw Type. If your key fob is held together by screws, use a small screwdriver to unscrew them. Keep the screws safe as you’ll need them to reassemble the fob.
Replace the Battery

Once you’ve opened the compartment, locate the battery, usually secured in place by either a clip or a battery holder. With caution, remove the old battery, paying close attention to its orientation before lifting it out. This step is vital, as you’ll need to position the new battery in the same manner. If required, employ a small screwdriver to delicately lift the battery from its holder. Then, insert the new battery into the holder, ensuring the positive (+) and negative (-) sides are correctly matched.

Reassemble the Key Fob

After placing the new battery, reassemble the key fob by aligning the two halves and pressing them together until you hear a snap or click, indicating that it’s securely closed. If your fob was held together with screws, replace them and tighten carefully. Finally, test the fob to ensure it works correctly by locking and unlocking your vehicle.

Troubleshooting Tips

If your key fob isn’t functioning even after replacing the battery, several troubleshooting steps can help resolve the issue. First, ensure the battery is inserted correctly, with the proper orientation. Next, check the cleanliness of the battery compartment, ensuring it’s free from any debris or corrosion that might impede contact. Additionally, inspect the battery contacts to ensure they’re not bent or otherwise damaged, as this can prevent proper electrical connection.

Finally, confirm that you’ve purchased the correct type of battery for your key fob, as using an incompatible battery can cause malfunctions. By systematically checking these factors, you can troubleshoot and potentially resolve any issues with your key fob.

key fob battery change

Where Can You Get A Key Fob Battery

When it comes time to replace your key fob battery, you have several convenient options at your disposal. By taking the time to research and purchase the right battery for your key fob, you can ensure that your vehicle’s remote entry system continues to operate smoothly for miles to come.

  • Online Retailers

    One of the easiest and most convenient options for purchasing a key fob battery is through online retailers. Websites like Amazon, eBay, and specialty automotive parts stores offer a wide range of replacement batteries for various key fob models. Simply search for the make and model of your key fob, and you’ll likely find several options to choose from. Online shopping offers the convenience of browsing through different brands and comparing prices without leaving the comfort of your home.

  • Automotive Parts Stores

    For those who prefer shopping in person or need immediate access to a replacement battery, automotive parts stores are an excellent option. Retailers like AutoZone, Advance Auto Parts, and O’Reilly Auto Parts typically carry key fob batteries in stock. Many of these stores also offer battery testing services to ensure you’re purchasing the correct replacement for your key fob. Additionally, the staff at these stores are often knowledgeable and can provide guidance if you’re unsure about which battery to choose.

  • Dealerships

    Another option for obtaining a key fob battery is through your vehicle’s dealership. Since key fobs are integral components of modern cars, most dealerships keep replacement batteries on hand for their respective brands. While purchasing a battery from a dealership may be slightly more expensive than other options, you can be confident that you’re getting a genuine, high-quality product specifically designed for your key fob.

  • Electronics Stores

    In addition to automotive-specific retailers, many general electronics stores also carry key fob batteries. Stores like Best Buy and Walmart often have a selection of batteries suitable for various key fob models. While these stores may not offer the same level of expertise as dedicated automotive parts stores, they can still be a convenient option, especially if you’re already planning a trip to buy other household items.

Is A Key Fob Battery Covered Under Warranty

In short, no, your key fob battery is typically not covered under warranty, unlike your Keyfob. One of the primary reasons why key fob batteries aren’t covered under warranty is the concept of wear and tear. Like any other battery-operated device, the battery in your key fob gradually loses its ability to hold a charge over time. This natural degradation isn’t a fault of the manufacturer but rather a consequence of normal usage.

Replacing a key fob battery is often a straightforward and inexpensive task. Many automotive stores, hardware stores, or even online retailers carry replacement batteries at affordable prices. Additionally, most key fobs are designed to allow for easy battery replacement without the need for special tools or expertise.

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