How-to-Replace-a-Lexus-Key-Fob-Battery

How to Replace a Lexus Key Fob Battery?

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Replacing the battery in your Lexus key fob is a straightforward task. It ensures your vehicle’s keyless entry and ignition systems function flawlessly. With a few simple tools and steps, you can perform a Lexus key fob battery replacement yourself.

Contents hide
1 Signs It’s Time for a Lexus Key Battery Replacement
2 Preparing to Change the Battery in Your Lexus Key Fob
3 Step-by-Step Guide to Changing the Lexus Key Fob Battery
4 Tips to Extend Your Lexus Key Battery Life
5 Troubleshooting After Replacing Your Lexus Key Fob Battery

Signs It’s Time for a Lexus Key Battery Replacement

  • The Lexus key fob range decreases, requiring closer proximity to operate.
  • The key fob’s LED indicator fails to light up.
  • Issues arise with the Smart Access system or push-button start, signalling the time for a Lexus key battery replacement.
  • If your Lexus RX experiences these symptoms, it may be time to change the battery in the Lexus key.

Preparing to Change the Battery in Your Lexus Key Fob

To replace the battery in your Lexus key, gather the necessary tools. You’ll need a flathead screwdriver and a CR2032 lithium battery, the most common size battery for Lexus key fobs. Make sure your hands are completely dry to avoid any damage.

Step-by-Step Guide to Changing the Lexus Key Fob Battery

  1. Use the release button to remove the mechanical key.
  2. With the mechanical key removed, open the key fob cover using the flat part of the key.
  3. Use the screwdriver to carefully remove the old battery.
  4. Place the new battery inside, ensuring proper orientation.
  5. Reassemble the key fob and test it to make sure the replacement was successful.

Tips to Extend Your Lexus Key Battery Life

  • Store the Lexus key fob away from the vehicle to prevent unnecessary signal searching, which drains the battery.
  • Avoid placing your fob within 3 feet of electronics that might interfere with its signal.
  • Activate the battery-saving mode if your model features it, to reduce key battery depletion.

Troubleshooting After Replacing Your Lexus Key Fob Battery

If you encounter issues after changing the battery, here are a few steps to troubleshoot. First, ensure the new battery is correctly installed with the positive side facing up. Next, confirm that the key fob cover is securely closed. If problems persist, visit your Lexus service centre for expert advice and assistance. They can help diagnose the issue and ensure your key fob functions properly with your Lexus model.

Numan Mushtaq
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