How to Change Lexus Key Fob Battery: A Simple Guide

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Are you struggling with a Lexus key fob battery that’s running low? Don’t worry, we’ve got you covered! Maintaining a functional key fob battery is crucial for hassle-free access to your Lexus. In this article, we will guide you through the simple steps to change your Lexus key fob battery, ensuring that you can continue to enjoy the convenience it provides. Let’s dive in!

Understanding the Lexus Key Fob Battery

Before we jump into the process of changing the battery, let’s take a moment to understand the key fob and its significance. The key fob is a small remote control device that allows you to lock, unlock, and even start your Lexus without inserting a physical key. It relies on a battery to function properly.

Lexus key fobs typically use lithium batteries, which provide a long-lasting and reliable power source. These batteries come in different sizes and models, depending on the specific key fob. It’s important to be aware of the signs indicating a dying key fob battery, such as reduced range or unresponsive buttons. Now, let’s move on to the tools and materials you’ll need for the battery replacement.

Tools and Materials Required

Changing the battery in your Lexus key fob doesn’t require any specialized tools. You’ll only need a few common items to complete the process successfully. Here’s a list of what you’ll need:

  1. Small screwdriver or pry tool
  2. New lithium battery (check your key fob model for the appropriate battery type)
  3. Clean cloth or tissue (optional)
  4. Safety gloves (optional)

When purchasing a new battery, make sure to choose a reputable brand to ensure quality and longevity. Now that we have everything ready, let’s proceed with the step-by-step guide on changing the Lexus key fob battery.

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Step-by-Step Guide to Change Lexus Key Fob Battery

Step 1: Identifying the Key Fob Model

To begin, you need to determine the model of your Lexus key fob. This information is crucial as it will help you locate the battery compartment and understand the specific steps required for your key fob model. You can refer to your car’s user manual or search online for the key fob model based on your Lexus make and year.

Step 2: Locating the Battery Compartment

Once you’ve identified your key fob model, it’s time to locate the battery compartment. In most Lexus key fobs, the battery compartment is situated on the backside of the key fob. However, depending on the model, it may also be found on the side or under a removable cover. Take a close look at your key fob to identify the battery compartment’s location.

Step 3: Opening the Key Fob Case

Using a small screwdriver or pry tool, gently insert it into the designated slot or gap to open the key fob case. Apply slight pressure and carefully pry open the case, ensuring not to damage or scratch it. Take your time and work your way around the case until it separates into two parts.

Step 4: Removing the Old Battery

Once the key fob case is open, you’ll be able to see the old battery. Carefully remove it from its housing, taking note of its position and orientation. If needed, you can use a clean cloth or tissue to assist in gripping the battery for easier removal. Properly dispose of the old battery according to local regulations.

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Step 5: Inserting the New Battery

Now, it’s time to insert the new battery into the key fob. Make sure to align the battery with the correct polarity (+/-) as indicated inside the key fob. Gently press the new battery into its designated housing until it fits securely. Take a moment to ensure the battery is securely in place.

Step 6: Closing the Key Fob Case

With the new battery in place, it’s time to close the key fob case. Align the two parts of the case and press them together firmly until you hear a click or feel them snap back into place. Make sure the case is securely closed to avoid any potential damage or loss of functionality.

FAQ about Changing Lexus Key Fob Battery

Can I replace the battery myself or should I seek professional help?

Changing the Lexus key fob battery is a straightforward process that can be done by most car owners. However, if you’re not confident in your abilities or are unsure about anything, it’s always a good idea to seek professional assistance.

What type of battery does my Lexus key fob require?

The specific battery type required for your Lexus key fob depends on its model. To ensure the right battery, refer to your car’s user manual, consult a Lexus dealership, or search online using your key fob model information.

How often should I change the key fob battery?

The lifespan of a key fob battery can vary depending on usage and other factors. Generally, it’s recommended to replace the battery every 1-2 years to ensure optimal performance and avoid unexpected battery failures.

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Are there any risks involved in changing the battery?

Changing the Lexus key fob battery poses minimal risks if done correctly. However, it’s important to handle the battery and key fob components with care. Take precautions to avoid damaging the key fob or injuring yourself during the battery replacement process.


Maintaining a functional Lexus key fob battery is essential for convenient access to your vehicle. By following the simple step-by-step guide outlined in this article, you can easily change the battery in your Lexus key fob and ensure its continued functionality. Remember to identify your key fob model, locate the battery compartment, and carefully replace the old battery with a new one. If you have any doubts, it’s best to consult a professional for assistance. Keep your Lexus key fob powered up, and enjoy the seamless experience it provides!

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