How to Change a Lexus Key Fob Battery

Silver Lexus ES parked

When you’re driving your Lexus from Colts Neck to Holmdel, one of the last things you want is the surprise of your Lexus key fob battery failing. Rather than sifting through the varying Google results for “how to change a battery in a Lexus key fob,” simply follow this guide from Ray Catena Lexus of Monmouth. We’re here to help you learn how to perform a Lexus key battery replacement.

When to Replace Your Lexus Key Fob Battery

Drivers around Toms River will likely find that they need a Lexus key fob battery replacement every 1-2 years. If you observe any of these signs, you should replace your Lexus key fob battery before it dies:

  • There is no longer an LED indicator light.
  • Push Button Start doesn’t work.
  • Smart Access doesn’t work.
  • Your key fob no longer has “the range.”

How to Preserve Your Lexus Key Fob Battery Life

There are several ways you can preserve the life of your Lexus key fob battery. One of the easiest is to be careful about keeping your key fob at least three feet away from electronics that produce magnetic fields, like laptops, cell phones, table lamps, and battery chargers.

You can also activate battery saving mode by holding down the lock button, then pressing the unlock button twice. The indicator will flash four times when you’re in battery saving mode. Press any button on the fob to activate Smart Access and Push Button Start.

How to Change Your Lexus Key Fob Battery: Step by Step

Performing a Lexus key fob battery replacement is easy! Simply follow these steps:

  1. Make sure your hands are completely dry.
  2. Push the release button on the side of the fob so the key comes out.
  3. Use a flathead screwdriver to pop open the key fob cover. (Pro Tip: Putting tape on the tip of the screwdriver will prevent scratching.)
  4. Remove the battery, first removing the key module if it’s there.
  5. Replace the battery, facing it with the plus side up. Put the key fob back together.

Learn More About Your Lexus with Ray Catena Lexus of Monmouth

Now that you know how to change the battery in your Lexus key fob, get more service tips and tricks from Ray Catena Lexus of Monmouth or contact our service department.

Recent News from Ray Catena Lexus of Monmouth

  • 2020 Lexus RX 350 Colors

    One of the reasons Colts Neck drivers opt for a Lexus is distinctive styling — and the 2020 Lexus RX 350 is no exception. From the quintessential spindle grille to sharp character lines, the Lexus RX 350 stands out wherever it ventures. What’s more, it’s available in multiple vibrant exterior colors. Read on to learn more…

  • 2020 Lexus ES Interior

    Take your Holmdel adventures to another level with the 2020 Lexus ES. The new ES interior offers advanced technology to keep everyone entertained and connected as well as comfortable. Learn more about the 2020 Lexus ES interior with this helpful guide from Ray Catena Lexus of Monmouth today before choosing your favorite trim level to bring home. Browse ES…

  • 2020 Lexus ES Reviews

    The 2020 Lexus ES reviews are in and this luxury midsize sedan has pleased the critics–as it has done for many many years since its release. Explore Lexus ES 350 reviews from automotive industry experts and see how the 2020 ES will improve your drives around Colts Neck and Holmdel. Then explore the Lexus ES 350…

Saved Vehicles


You don't have any saved vehicles!

Look for this link on your favorites:


Once you've saved some vehicles, you can view them here at any time.

Contact Us

(732) 493-5000

Call Now

2135 Route 35 • Oakhurst, NJ 07755

Get Directions

Today's Hours:

Open Today! Sales: 9am-6pm

Open Today! Service: 8am-2pm

Open Today! Parts: 8am-4pm

Ray Catena Lexus of Monmouth 40.27322, -74.04233.