How to Change the Battery in a Lexus Key Fob

Lexus Key Fob

If you’re having issues in Lake Elsinore with your Lexus key fob when trying to unlock and lock your vehicle, it might be time for a Lexus key battery replacement. This is because Lexus key fob batteries are designed to last between one and two years, however, they are also designed so that it’s an easy switch to make. Learn more about how easy a Lexus key battery replacement is in a Lexus key fob with the help of the service team at Temecula Valley Lexus today! But you can still contact us with any questions that you still have.



Signs You Need a Lexus Key Battery Replacement

When you stop your engine, you might get a low battery alert in your vehicle notifying you that the key fob battery is low. Here are a few more signs that it’s time for a Lexus key battery replacement:

  • Your Lexus’s Smart Access system and/or the push-button start isn’t functioning properly
  • The proximity detection area is smaller than usual
  • The LED indicator light on the key won’t turn on

Four Simple Steps for Lexus Key Battery Replacement

Before you take the proper steps on how to change the battery in a Lexus key fob, you’ll need a flathead screwdriver and a CR2032 lithium battery which you can find at our very own auto parts store. Once you have everything you need, follow these steps to conduct your Lexus key battery replacement: 

  1. Push the release button on the side of the key fob, then remove the emergency key blade stored inside. 
  2. Place the tip of the flathead screwdriver in the now open space that was housing the key blade. Apply gentle pressure to pop the key fob cover plate off. 
  3. There may be an electronic key module covering the battery. If so, remove that first, then pop the old battery out with the screwdriver.
  4. Put the new CR2032 battery in place with the plus side facing up. Replace the electronic key module and pop the key fob cover plate back into place.

How to Reduce Key Fob Battery Drainage

To ensure you never miss a step along your Fallbrook commute, there’s a battery-saving mode which reduces battery drainage in your Lexus key fob. This is a simple and easy feature to set up that can be seen in the steps below:

  1. Hold down the LOCK button while simultaneously pressing the UNLOCK button two times.
  2. The electronic key indicator should flash four times. This confirms that battery-saving mode has been activated.
  3. When you’re ready to resume use of the Smart Access system and push-button start, just press any button on the key fob!

Find Lexus Key Battery Replacements at Temecula Valley Lexus

After seeing how to change the battery in a Lexus key fob, you can find the right replacement and get back on Riverside County roads. You can check out more helpful service guides at Temecula Valley Lexus and ensure your luxury ride gets the maintenance it needs most with our service specials. And if you have any more serious service needs, our service department is here to help with every thing. 


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