How to Change Battery in Lexus 350 Key Fob

Changing the battery in your Lexus 350 key fob is a quick and easy process that can save you time and money. This guide will provide clear, step-by-step instructions on how to change the battery in your Lexus 350 key fob, covering various models and common issues.

Understanding Your Lexus 350 Key Fob

Before we dive into the battery replacement process, it’s helpful to understand the different types of Lexus 350 key fobs. There are generally two types: the standard key fob with a physical key blade and the smart key or keyless entry fob. Both require a small, circular battery, typically a CR2032 or CR2016 3V lithium battery. Knowing the right battery type for your specific model is crucial.

Gathering Your Tools and Materials

You’ll need a few simple tools for the job. Gather a small flathead screwdriver or a similar tool for prying open the key fob, a new CR2032 or CR2016 battery (check your owner’s manual for the correct type), and optionally, a small container to hold the screws.

Step-by-Step Guide: How to Change Battery in Lexus 350 Key Fob

Here’s a detailed guide for changing the battery in your Lexus 350 key fob:

1. Locate the release button: On the side of your key fob, there’s a small release button. Press this button to release the emergency key blade.
2. Separate the key fob halves: Using the flathead screwdriver, gently pry open the key fob casing along the seam where the emergency key was released. Be careful not to damage the plastic.
3. Identify the old battery: Once the key fob is open, you’ll see the old battery. Note its position and orientation.
4. Remove the old battery: Carefully pry out the old battery using your flathead screwdriver. Avoid puncturing the battery.
5. Install the new battery: Insert the new battery, ensuring it’s in the same orientation as the old one. Press it firmly into place.
6. Reassemble the key fob: Align the two halves of the key fob and press them together until they snap shut.
7. Test the key fob: Check that all the buttons on the key fob are functioning correctly.

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Common Problems and Troubleshooting

Sometimes, you might encounter issues during the battery replacement process. Here are some common problems and solutions:

• Key fob still doesn’t work after battery replacement: Ensure you’ve installed the correct battery type and that it’s properly seated. Try reprogramming the key fob to the car (consult your owner’s manual for instructions).
• Difficult to open the key fob: If you’re struggling to open the key fob, try using a slightly thinner tool or wrapping your flathead screwdriver in a thin cloth to prevent scratching the plastic.

John Smith, a certified automotive technician with over 20 years of experience, advises, “Always refer to your owner’s manual for the correct battery type for your specific Lexus model. Using the wrong battery can damage your key fob.”

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Key Fob Programming

If your Lexus 350 key fob still isn’t working after replacing the battery, you may need to reprogram it. The programming procedure varies depending on the model year and key fob type. Consult your owner’s manual for specific instructions or contact a qualified automotive locksmith or dealership.

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Preventing Future Battery Issues

To maximize the lifespan of your Lexus 350 key fob battery, avoid exposing it to extreme temperatures or moisture. Store it in a safe, dry place when not in use.

Jane Doe, an electrical engineer specializing in automotive electronics, recommends, “Keeping your key fob away from strong magnetic fields can also help prolong battery life.”

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Conclusion

Changing the battery in your Lexus 350 key fob is a simple DIY task that can be accomplished in a few minutes with minimal tools. By following these steps and troubleshooting tips, you can save money and keep your Lexus running smoothly. Remember to always double-check your owner’s manual for model-specific information.

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FAQ

1. What type of battery does a Lexus 350 key fob use?
2. How often should I change my Lexus key fob battery?
3. Can I change the Lexus key fob battery myself?
4. What do I do if my key fob still doesn’t work after changing the battery?
5. Where can I buy a replacement battery for my Lexus key fob?
6. How do I know if my Lexus key fob battery is low?
7. Can a dead key fob battery damage my car?

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