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Keeping the Connection: How to Replace Battery in Key Fob

How to Replace Battery in Key Fob

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A key fob is an essential accessory for modern vehicles, granting us the convenience of keyless entry and ignition. However, like all electronic devices, a key fob requires a power source to function. This power source is a small battery. Over time, this battery can deplete, leading to a non-functional key fob. In this article, we’ll guide you through the process of How to Replace Battery in Key Fob, ensuring you always have a reliable connection with your vehicle.

How to Replace Battery in Key Fob: A Step-by-Step Guide

  1. Identify the Key Fob Model: Before you begin the How to Replace Battery in Key Fob process, it’s essential to know the make and model of your key fob. Different models might have slightly different battery replacement procedures. Check your vehicle’s manual.
  2. Gather Necessary Tools: Typically, you’ll need a small flat-head screwdriver or a pry tool to open the key fob casing. Some models might require additional tools, so ensure you have everything on hand.
  3. Open the Key Fob: Carefully insert the screwdriver or pry tool into the small notch or groove on the side of the key fob. Gently twist or pry apart the two halves of the fob.
  4. Locate the Battery: Once open, you’ll see the coin cell battery inside. Note the battery’s orientation, as you’ll need to place the new battery in the same way.
  5. Remove the Old Battery: Using your fingers or a tweezer, carefully remove the old battery. Avoid touching the battery terminals with your fingers.
  6. Insert the New Battery: Place the new battery in the same orientation as the old one. Ensure it sits snugly in its compartment.
  7. Reassemble the Key Fob: Align the two halves of the key fob and press them together until they snap into place.
  8. Test the Key Fob: Before concluding, it’s crucial to test the key fob to ensure it’s working correctly. Press the buttons and check if they’re functioning as expected.

Tips for Prolonging Key Fob Battery Life

  • Avoid Excessive Button Pressing: Pressing the buttons on your key fob when it’s not in use can drain the battery faster. Store it in a place where the buttons won’t be accidentally pressed.
  • Keep Away from Extreme Temperatures: Extreme cold or heat can affect battery performance. Store your key fob in a temperate environment.
  • Regular Maintenance: Just like your vehicle, your key fob benefits from regular check-ups. For more tips and services on maintaining your key fob, consult with experts like those at Lightning Locksmith.


Maintaining a functional key fob is essential for the convenience and security of your vehicle. By understanding How to Replace Battery in Key Fob, you ensure you’re never left stranded or locked out. For more information on key fobs, their maintenance, or any other locksmith-related queries, visit Lightning Locksmith’s official website. If you’re in the area and need hands-on assistance, find us on Google Maps.


(480) 805-4035



Phoenix, AZ 85048

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