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    Navigation: Home » Car Batteries » How to Replace Lexus RX 350 Key Fob Battery: Step-by-Step Guide
    Car Batteries

    How to Replace Lexus RX 350 Key Fob Battery: Step-by-Step Guide

    Jackson DoyleBy Jackson DoyleAugust 12, 20246 Mins Read
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    Ever found yourself locked out of your Lexus RX 350 because the key fob battery died at the worst possible moment? Frustrating, right? But fret not, because in this article, you’ll discover a simple solution to this common headache.

    Table of Contents

    Toggle
    • Step 1: Gather the necessary tools
    • Step 2: Locate the key fob
    • Step 3: Open the key fob casing
    • Key Facts
    • Step 4: Replace the old battery
    • Step 5: Test the key fob
    • Conclusion
    • Frequently Asked Questions
    • Can I replace the battery in my Lexus RX 350 key fob myself?
    • What type of battery should I use for my Lexus RX 350 key fob?
    • How should I test my Lexus RX 350 key fob after replacing the battery?
    • What should I do if my Lexus RX 350 key fob doesn't work after battery replacement?

    Imagine effortlessly replacing your key fob battery in just a few minutes without the need for a trip to the dealership or costly repairs. With our step-by-step guide, you’ll be back on the road in no time, saving both time and money.

    Step 1: Gather the necessary tools

    To replace the key fob battery in your Lexus RX 350, you’ll need a few essential tools. Here’s what you should collect before you start:

    • New CR2032 battery
    • Small flat-head screwdriver
    • Towel or cloth to protect the key fob
    • Patience and a steady hand

    Let’s move on to the next step.

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    Key Fob Batteries for Lexus (2-Pack) CR2032 - RX ES NX IS UX GX RC GS LS (RX350 ES350 NX300 RX450h NX200t ES300h GX460 NX350 GS350 IS300 UX200 IS350 UX250h RC350) Smart Remote Battery Replacement

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    Comprehensive Replacement Kit – Includes two CR1632 coin batteries, providing all necessary components for seamless key fob battery replacement.

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    Duracell 2032 Lithium Battery, 4 Count (Pack of 1), Child Safety Features, Compatible with Key Fob, Tea Light Candles and Other Devices, CR2032 Battery
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    LONG-LASTING BATTERIES DESIGNED FOR DEPENDABILITY: Duracell Lithium Coin CR2032 3 Volt batteries deliver long-lasting power and performance you can count on for devices throughout the home or on-the-go, such as key fobs, remote controls, Apple AirTag️, flameless candles, wireless cameras, thermometers, toys, and more.

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    Step 2: Locate the key fob

    When changing the key fob battery in your Lexus RX 350, the first step is to locate the key fob itself. Usually, the key fob is a small, rectangular device that allows you to remotely lock and unlock your car.

    To find the key fob, check your pockets, purse, or any usual spots where you keep it. If you can’t find it, think about where you had it last or areas where it might have slipped out of sight.

    Remember, the key fob is essential for accessing and starting your Lexus RX 350, so locating it promptly ensures a smooth battery replacement process.

    Step 3: Open the key fob casing

    To open the key fob casing safely, you’ll need the right tools and a gentle touch. Follow these steps:

    • Locate the seam: Look for the small groove where the two halves of the key fob meet.
    • Use a flathead screwdriver: Insert the screwdriver into the seam and twist gently to pry open the casing.
    • Be patient: Take your time to avoid damaging the casing or the internal components.
    • Avoid using excessive force: A light touch is key to prevent any breakage.
    • Carefully separate the two halves: Once the casing starts to open, slowly work your way around to release all the clips holding it together.

    Remember, opening the key fob casing correctly is crucial to accessing the battery compartment.

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    Premium Batteries are compatible with Lexus: RX 350 (16-24), ES 350 (13-24), NX 300 (18-21), RX 450h (16-24), NX 200t (15-17), ES 300h (13-24), GX 460 (20-24), GS 350 (13-20), IS 300 (16-24), UX 200 (19-24), IS 350 (14-23), LS 430 (04-06), UX 250h (19-24), RC 350 (15-24), NX 350h (22-24), NX 350 (22-24), NX 300h (18-21), IS 250 (14-15), RX L (18-22), RC 300 (16-24), ES 250 (21-24), LX 570 (16-21), LS 500 (18-24), RX 500h (23-24), NX 250 (22-24), UX 300h (24), NX 450h+ (22-24), TX 350 (24), LX 600 (22-24), UX 300e (20-24), LC 500 (18-24), RC F (15-24), GX 550 (24), GS 450h (13-18), IS 200t (16-17), RZ 450e (23-24), IS 500 (21-24), GS F (16-20), TX 500h (24), LC 500h (18-24)

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    Key Fob Replacement Batteries for Lexus RX350 (07-15), GX460 (10-20), ES350 (07-12), IS250/350 (06-13), CT200h (11-17), LS460 (07-17), RX450h (10-15) Remote Fob CR1632 (2-Pack) (Check Fitment Guide)
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    CONFIRM FIT **Please confirm compatibility using the fitment guide located in the product images** This battery will not fit your key fob unless your fob exactly matches one of the compatible examples provided.

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    Key Facts

    Important Points
    Opening the casing should be done gently
    Take your time to avoid damage
    Use a flathead screwdriver to pry it open

    Continue with the next steps for a successful battery replacement process.

    Step 4: Replace the old battery

    Once you have safely opened the key fob casing and accessed the battery compartment, it’s time to replace the old battery with a new one. Follow these steps to successfully complete the process:

    • Remove the old battery: Take out the old battery carefully, making sure not to damage any other components inside the key fob.
    • Insert the new battery: Place the new battery into the slot, ensuring it is properly oriented according to the markings or the way the old battery was positioned.
    • Close the casing: Gently put the casing back together, making sure it fits snugly and there are no gaps. Press the halves together firmly to ensure a secure closure.
    • Test the key fob: Press the buttons on the key fob to check if the new battery is working correctly. Make sure the buttons respond as they should.
    Important Note:
    It’s recommended to use the correct type and size of battery as specified in the key fob manual to ensure proper functionality. Improper battery size or type may lead to issues with the key fob operation.

    Remember, patience and gentle handling are key to successfully replacing the battery in your Lexus RX 350 key fob.

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    Pinochi CR1632 Key Fob Replacement Batteries for Lexus RX350 07-15, ES350 07-12, GX460 10-20, IS250/350 06-13, CT200h 11-17, LS460 07-17, RX450h 10-15 Car Remote Fob Battery
    Pinochi CR1632 Key Fob Replacement Batteries for Lexus RX350 07-15, ES350 07-12, GX460 10-20, IS250/350 06-13, CT200h 11-17, LS460 07-17, RX450h 10-15 Car Remote Fob Battery

    [CR1632 Lexus Key Fob Battery Compatibility & Easy Installation] - Please check product images to confirm perfect compatibility with your Lexus key fob. We provide a step-by-step installation video and a dedicated installation tool for free, making your battery replacement effortless and fast.

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    Car Key Battery Replacement for Lexus RX (2004-2009 RX CR2016 3V Remote Battery) Pack of 2
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    Pinochi Key Fob Battery Replacement for Lexus RX ES NX GX is UX GS RC LS (RX350 ES350 ES300h NX300 RX450h NX200t GX460 NX350 GS350 IS350 UX200 UX250h RC350 LS500 etc.) 3 or 4 Button Smart Remote
    Pinochi Key Fob Battery Replacement for Lexus RX ES NX GX is UX GS RC LS (RX350 ES350 ES300h NX300 RX450h NX200t GX460 NX350 GS350 IS350 UX200 UX250h RC350 LS500 etc.) 3 or 4 Button Smart Remote

    " - Please check product image to confirm compatibility.(Opening/Pry Tool + Installation Video Included) ) - "

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    Step 5: Test the key fob

    Congratulations on successfully replacing the Lexus RX 350 key fob battery! Now it’s time to ensure everything is in working order. Here’s how to test the key fob:

    • Stand near your Lexus and press the buttons on the key fob to check if it locks and unlocks the doors.
    • Verify that the key fob works from various distances to confirm its range.
    • Test all the buttons to ensure they function correctly, including any features like remote start or trunk release if applicable.

    It’s important to conduct these tests immediately after replacing the battery to catch any issues early. If the key fob doesn’t work as expected, recheck the battery installation and make sure it’s properly inserted.

    Remember, patience is key when testing the key fob. In some cases, it might take a few tries for the key fob to sync up properly with your Lexus after a battery replacement.

    Conclusion

    You’ve now successfully replaced the battery in your Lexus RX 350 key fob following the detailed steps outlined in this guide. Remember to use the right battery type and handle with care. After the replacement, test your key fob by checking its functions and features. It’s important to test it immediately to catch any issues early on. Be patient as the key fob may take some time to sync properly with your Lexus. Enjoy the convenience of a fully functional key fob and keep your vehicle secure with this simple maintenance task.

    Frequently Asked Questions

    Can I replace the battery in my Lexus RX 350 key fob myself?

    Yes, you can replace the battery in your Lexus RX 350 key fob yourself by following the correct steps for removal, insertion of the new battery, and secure casing closure.

    What type of battery should I use for my Lexus RX 350 key fob?

    It is important to use the recommended battery type for your Lexus RX 350 key fob to ensure optimal performance.

    How should I test my Lexus RX 350 key fob after replacing the battery?

    After replacing the battery, test your Lexus RX 350 key fob by checking its functionality in locking and unlocking doors, verifying range, and testing all buttons including remote start.

    What should I do if my Lexus RX 350 key fob doesn’t work after battery replacement?

    If your Lexus RX 350 key fob doesn’t work after battery replacement, be patient as it may need time to sync properly with the Lexus. Immediate testing is recommended to identify any issues early.

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    Jackson-Doyle
    Jackson Doyle

      Battery industry professional with 5+ years of experience. Bachelor of Science in Electrical Engineering from Georgia Tech. Specializes in power systems and renewable energy.

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