How to Replace Battery in Lexus RX 350 Key Fob

Replacing the battery in your Lexus RX 350 key fob is a quick and easy process that can save you time and money. This guide will walk you through the steps involved in How To Replace Battery In Lexus Rx 350 Key Fob, so you can get back on the road in no time.

Knowing how to change your key fob battery is a valuable skill for any car owner. A dead key fob battery can leave you stranded, so being able to replace it yourself can prevent a major inconvenience. This guide will equip you with the knowledge to handle this simple task, whether you’re a seasoned car owner or new to the world of automotive maintenance. We’ll cover everything from identifying the right battery type to the specific steps for your Lexus RX 350 key fob.

What You’ll Need to Replace Your Lexus RX 350 Key Fob Battery

Before you begin, gather the following items:

A new CR2032 battery: This is the standard battery for most Lexus key fobs. You can find these at most electronics stores, pharmacies, and online.
A small flathead screwdriver or a similar tool: This will be used to pry open the key fob. Be careful not to use anything too sharp that could damage the plastic.
Optional: A small plastic pry tool. This can help prevent scratching your key fob.

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

Locate the release button: On the side of your Lexus RX 350 key fob, you’ll find a small release button. Press this button and simultaneously slide the metal key out of the fob.
Open the key fob: Use your flathead screwdriver or plastic pry tool to carefully pry open the key fob casing. Start by inserting the tool into the slot where the metal key was located. Gently pry the two halves of the fob apart. Be careful not to damage the plastic clips.
Remove the old battery: Once the key fob is open, you should see the old CR2032 battery. Use your screwdriver or pry tool to carefully lift the old battery out of its compartment.
Install the new battery: Place the new CR2032 battery into the compartment, making sure the positive (+) side is facing up. Press down gently until the battery is securely in place.
Close the key fob: Align the two halves of the key fob and press them together until they snap shut.
Test the key fob: Try locking and unlocking your car with the key fob to ensure the new battery is working correctly.

For more information about key fob battery replacements for other Lexus models, you might find our guide on 2012 lexus key fob battery replacement helpful. You can also check out information on the 2015 lexus es 350 key fob battery.

Troubleshooting Common Key Fob Issues

Sometimes, replacing the battery isn’t enough to fix a malfunctioning key fob. Here are some common issues and how to address them:

Key fob still not working after battery replacement: If your key fob isn’t working even with a new battery, it’s possible the key fob needs to be reprogrammed. You can try reprogramming it yourself by following the instructions in your owner’s manual, or you can take it to a dealership or locksmith.
Key fob buttons are sticking: If the buttons on your key fob are sticking, it may be due to dirt or debris. Try cleaning the buttons with a cotton swab and some isopropyl alcohol.

If you’re having trouble with your back door, you can find helpful information in our article about the lexus rx 350 key fob back door. Also, you may find our post on how to change lexus rx 350 key fob battery useful. For those needing a replacement key fob, check out this article: replacement key fob lexus 2015 rx.

Conclusion: Keep Your Lexus RX 350 Key Fob Working Smoothly

Replacing the battery in your Lexus RX 350 key fob is a simple task that you can do yourself with a few basic tools. By following these steps, you can save time and money while ensuring your key fob is always ready when you need it. Remember to keep a spare CR2032 battery on hand so you’re prepared for when that low battery warning light comes on.

FAQs

What type of battery does the Lexus RX 350 key fob use? It uses a CR2032 battery.
How often should I replace the battery in my Lexus RX 350 key fob? Typically, the battery lasts between 2-3 years, depending on usage.
Can I damage my key fob by replacing the battery myself? As long as you’re careful and use the proper tools, you shouldn’t damage your key fob.
What if my key fob still doesn’t work after replacing the battery? You may need to have your key fob reprogrammed.
Where can I buy a replacement CR2032 battery? You can find them at most electronics stores, pharmacies, and online.
What can I use to pry open my key fob if I don’t have a flathead screwdriver? A small plastic pry tool, a guitar pick, or even a thin credit card can work.
Is there a way to prevent my key fob battery from dying so quickly? Avoid excessive button pressing and store your key fob in a cool, dry place away from direct sunlight.

Common Scenarios

Scenario 1: Key fob won’t unlock the car. This is the most common sign of a dead battery. Follow the steps above to replace the battery.
Scenario 2: Key fob only works intermittently. This could be a sign of a dying battery or a faulty connection inside the key fob. Try replacing the battery first. If the problem persists, you may need to have the key fob inspected by a professional.
Scenario 3: Key fob buttons are unresponsive. Again, this is likely a dead battery, but could also indicate damage to the key fob itself.

More Helpful Resources

Check our other articles on Key Fob Programming and maintenance.
Explore our blog for more car care tips and advice.

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