Changing the Battery on a Lexus Key Fob: A Comprehensive Guide

Changing The Battery On A Lexus Key Fob is a simple task that most owners can handle themselves. This guide provides step-by-step instructions, troubleshooting tips, and answers to frequently asked questions to help you keep your Lexus key fob functioning perfectly.

Understanding Your Lexus Key Fob

Lexus key fobs come in various shapes and sizes, but the battery replacement process is generally similar across models. Knowing your key fob type helps you identify the right tools and techniques. Whether you have a smart key, a traditional key fob, or a keyless entry remote, understanding its components is the first step.

changing lexus key fob battery

Identifying the Battery Type

Most Lexus key fobs use a CR2032 or CR2025 3-volt lithium battery, readily available at most stores. Confirming the specific battery type for your model ensures optimal performance. Check your owner’s manual or look for markings on the old battery.

How to Change the Battery on a Lexus Key Fob: Step-by-Step Instructions

Here’s a detailed guide for changing the battery on a lexus key fob:

Locate the release button: This small button or switch, often on the side or back of the fob, releases the mechanical key.
Release the mechanical key: Press the release button and slide out the mechanical key.
Open the key fob casing: Use the mechanical key or a small flathead screwdriver to gently pry open the key fob casing at the designated notch. Be careful not to damage the plastic.
Remove the old battery: Carefully remove the old battery, noting its orientation.
Insert the new battery: Insert the new CR2032 or CR2025 battery, ensuring it matches the orientation of the old one. Positive (+) side should typically face upwards.
Close the key fob casing: Snap the two halves of the casing back together securely.
Test the key fob: Try locking and unlocking your vehicle to ensure the new battery is working correctly.

changing lexus 2019 rx350 key fob battery

Troubleshooting Common Issues

Sometimes, even after changing the battery, your key fob might not work. Here’s what you can do:

Check battery orientation: Ensure the battery is inserted correctly with the positive (+) side facing the right direction.
Clean the battery contacts: Use a cotton swab and rubbing alcohol to clean the battery contacts inside the key fob.
Try resynchronizing the key fob: Consult your owner’s manual for the specific resynchronization procedure for your Lexus model. This usually involves a sequence of button presses or inserting the key into the ignition.

changing battery in 2013 lexus rx350 key fob

What if my Lexus key fob still doesn’t work after changing the battery?

If your key fob continues to malfunction after trying these steps, it might have a more serious issue requiring professional attention. Contact a qualified automotive locksmith or your Lexus dealership for further diagnosis and repair.

“Regularly changing your key fob battery prevents unexpected lockouts and ensures smooth vehicle operation,” says John Smith, Senior Automotive Technician at Smith’s Auto Repair.

changing battery in lexus rx key fob

Conclusion

Changing the battery on a Lexus key fob is a quick and easy task that can save you time and frustration. By following the steps outlined in this guide, you can easily replace the battery yourself and keep your Lexus key fob working flawlessly. Remember to always use the correct battery type and follow the proper procedures to avoid any issues.

changing battery in lexus rx350 key fob

FAQ

How often should I change my Lexus key fob battery? Every 2-3 years, depending on usage.
What type of battery does my Lexus key fob use? Typically a CR2032 or CR2025 3-volt lithium battery. Check your owner’s manual.
Can I damage my key fob by changing the battery myself? Unlikely, if you follow the instructions carefully.
What if my key fob still doesn’t work after changing the battery? Try resynchronizing the key fob or consult a professional.
Where can I buy a replacement battery? Most convenience stores, electronics stores, and auto parts stores.
Do all Lexus key fobs have the same battery replacement process? The process is generally similar but may vary slightly between models.
How do I know if my key fob battery is low? You might experience reduced range or intermittent operation.

Common Scenarios

Key fob not working at all: Likely a dead battery or a more serious issue.
Key fob working intermittently: Could be a low battery, or the contacts might need cleaning.
Key fob range reduced: Likely a low battery.

Further Exploration

Check out our other helpful articles on KEYFOBPROG for more information on Lexus Key Fob Programming, replacement, and troubleshooting.

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