How to Change Battery in Lexus NX300 Key Fob

Changing the battery in your Lexus NX300 key fob is a quick and easy process that can save you time and money. You won’t need any specialized tools, and with this guide, you’ll be back on the road in no time.

Understanding Your Lexus NX300 Key Fob

The Lexus NX300 key fob is a sophisticated piece of technology that allows you to lock, unlock, and start your car remotely. Like any electronic device, it relies on a battery to function. Over time, this battery will naturally deplete, and you’ll need to replace it. Knowing how to change the battery in your Lexus NX300 key fob is a valuable skill for any NX300 owner.

Lexus NX300 Key Fob Front and Back Views

Gathering the Necessary Tools

Before you begin, it’s helpful to gather everything you’ll need. You’ll only need a few items: a new CR2032 battery (easily found at most stores), a small flathead screwdriver, and optionally, a small pick or similar tool to assist in opening the key fob. Having these items ready will make the process smoother.

Identifying the Correct Battery Type

It’s crucial to use the correct battery type for your Lexus NX300 key fob, which is a CR2032 battery. Using the wrong type can damage your key fob. CR2032 batteries are readily available online and in most retail stores that sell batteries.

Step-by-Step Guide to Changing the Lexus NX300 Key Fob Battery

Here’s a step-by-step guide on how to change the battery in your Lexus NX300 key fob:

Release the Mechanical Key: Locate the small release button on the side of the key fob and press it. This will allow you to slide the mechanical key out of the fob.
Open the Key Fob: Insert the flathead screwdriver into the small slot revealed after removing the mechanical key. Gently twist the screwdriver to separate the two halves of the key fob. Be careful not to apply excessive force, which could damage the plastic.
Remove the Old Battery: Once the key fob is open, you’ll see the CR2032 battery. Use your fingernail or a small pick to carefully pry the old battery out of its compartment.
Install the New Battery: Insert the new CR2032 battery into the compartment, making sure the positive (+) side is facing up. You should feel a slight click when the battery is correctly seated.
Reassemble the Key Fob: Align the two halves of the key fob and press them together until they snap securely shut.
Reinsert the Mechanical Key: Slide the mechanical key back into its slot on the key fob.

That’s it! You’ve successfully changed the battery in your Lexus NX300 key fob. Test the key fob to ensure it’s working correctly by locking and unlocking your car.

Troubleshooting Tips

If your key fob still isn’t working after changing the battery, try these troubleshooting tips:

Check the Battery Orientation: Ensure the new battery is installed with the positive (+) side facing up.
Clean the Battery Contacts: Use a cotton swab and rubbing alcohol to clean the battery contacts inside the key fob.

“A common mistake people make is installing the battery incorrectly. Double-check the orientation to ensure the positive side is facing up,” advises John Smith, Senior Automotive Technician at Smith Auto Repair.

Conclusion

Changing the battery in your Lexus NX300 key fob is a simple task that can be completed in just a few minutes. By following the steps outlined in this guide, you can save yourself a trip to the dealership and keep your key fob functioning properly. Now you know how to change the battery in your Lexus NX300 key fob like a pro!

FAQ

How often should I change the key fob battery? Typically, every 2-3 years.
What type of battery does the Lexus NX300 key fob use? A CR2032 battery.
Can I use a different type of battery? No, using the wrong battery type can damage your key fob.
What should I do if my key fob still doesn’t work after changing the battery? Check the battery orientation and clean the battery contacts.
Where can I buy a CR2032 battery? Most retail stores that sell batteries, as well as online retailers.
Do I need special tools to change the battery? Just a small flathead screwdriver and optionally, a small pick.
Is it difficult to change the key fob battery? No, it’s a simple process that most people can do themselves.

Common Scenarios and Questions

Key fob not working at all: This usually indicates a dead battery. Follow the steps above to replace it.
Key fob intermittently working: This could also be a dying battery, or there might be an issue with the battery contacts. Try cleaning the contacts.
Key fob works but the range is reduced: This often signifies a weakening battery that needs replacement.