Changing Key Fob Battery Lexus: A DIY Guide

If you’re experiencing issues with your Lexus key fob, like decreased range or unresponsive buttons, a dead battery might be the culprit. Luckily, Changing Key Fob Battery Lexus vehicles is a relatively simple process that you can handle yourself. This guide will walk you through the steps, saving you a trip to the dealership and some money.

How to Tell if Your Lexus Key Fob Battery Needs Replacing

Before you start digging around for a new battery, it’s best to confirm that the battery is indeed the issue. Here are some telltale signs:

• Reduced signal strength: You find yourself standing closer to your car to lock or unlock it.
• Intermittent functionality: The key fob sometimes works and sometimes doesn’t.
• Unresponsive buttons: Pressing the buttons yields no response from your Lexus.
• Dashboard warning: Some Lexus models might display a “Key Fob Battery Low” warning on the dashboard.

Lexus key fob range issue

What You’ll Need to Change Your Lexus Key Fob Battery

Gather these few items before you begin:

• Replacement battery: Most Lexus key fobs use a CR2032 battery. You can easily find these at most supermarkets, electronics stores, or online.
• Small flat-head screwdriver: This will help you pry open the key fob casing.
• Plastic prying tool (optional): To prevent scratching the key fob, consider using a plastic prying tool instead of a screwdriver.

Lexus Key Fob Battery Replacement: A Step-by-Step Guide

Here’s a general guide on how to change the battery in most Lexus key fobs.

1. Locate the release button: Examine your Lexus key fob for a small release button or switch. This is usually located on the back or side.
2. Release the valet key: Press the release button and gently slide out the valet key.
3. Separate the key fob halves: Use your fingernail or the tip of your flat-head screwdriver to carefully pry open the key fob casing along the seam. Start from the side where the valet key was released.
4. Identify and remove the old battery: Inside, you’ll see the battery. Note its orientation. Use the screwdriver or a plastic prying tool to carefully lift the battery out of its compartment.
5. Install the new battery: Insert the new CR2032 battery into the compartment, ensuring the positive (+) side faces up, matching the orientation of the old battery.
6. Reassemble the key fob: Align the two halves of the key fob casing and press them together firmly until you hear a click, indicating they’re securely closed.
7. Reinsert the valet key: Slide the valet key back into its slot until it locks into place.
8. Test the key fob: Check if all the buttons are functioning correctly by locking and unlocking your car.

Replacing Lexus key fob battery

Still Having Problems?

If you’ve replaced the battery and are still experiencing issues with your Lexus key fob, there might be other underlying problems.

“While a dead battery is the most common culprit for key fob malfunctions, other factors, like a faulty key fob, receiver issues in the car, or even software glitches, could be at play,” says John Miller, a seasoned automotive electrician at KEYFOBPROG.

In such cases, it’s best to consult with a qualified automotive locksmith or your Lexus dealership for further diagnosis and assistance.

Frequently Asked Questions

Q: How long does a Lexus key fob battery last?

A: Typically, a Lexus key fob battery lasts between 3 to 5 years, depending on usage and environmental factors.

Q: Can I use any brand of CR2032 battery for my Lexus key fob?

A: While any brand of CR2032 battery will technically work, it’s recommended to use a reputable brand for optimal performance and longevity.

Q: Will disconnecting the car battery reset the key fob?

A: No, disconnecting the car battery will not reset the key fob or its programming.

Q: Can I damage my key fob by changing the battery myself?

A: As long as you follow the instructions carefully and apply gentle pressure when prying open the casing, you are unlikely to cause any damage.

Q: My Lexus key fob got wet. Will changing the battery fix it?

A: Water damage can be tricky. While changing the battery might help if the damage is minimal, it’s advisable to consult a professional to assess the extent of the damage.

Need Help with Your Lexus Key Fob?

Changing the battery in your Lexus key fob is a straightforward process. However, if you’re unsure about any step or if you continue to experience issues after replacing the battery, don’t hesitate to reach out to the experts at KEYFOBPROG.

We offer a wide range of services, including Lexus key fob battery replacement, programming, and repair. Contact us today via WhatsApp at +1 (641) 206-8880 or visit us at 1326 N Houston St, Amarillo, TX 79107, USA. Our team is available 24/7 to assist you.

You can also find helpful resources and information on our website, including articles on changing key fob battery lexus rx 350, how to change key fob battery lexus, and lexus key fob change battery. We also have dedicated guides for specific models, like the lexus nx200t key fob and information on replacing battery in lexus rx 350 key fob.