If you’re experiencing issues with your Lexus key fob, such as the car not unlocking or starting, there’s a good chance the battery is dead. This is a common problem that can be easily addressed with a quick battery replacement. This comprehensive guide will walk you through troubleshooting your Lexus key fob battery and provide step-by-step instructions for replacing it.
How to Tell if Your Lexus Key Fob Battery is Dead
Before you replace your Lexus key fob battery, it’s best to confirm that it’s the source of the issue. Here are a few common signs that your key fob battery is dying:
- Decreased Signal Range: You may notice that you need to be closer to your Lexus for the key fob to work.
- Intermittent Functionality: The key fob might work sometimes but not others, indicating a weak battery.
- Warning Lights and Messages: Some Lexus models will display a warning message on the dashboard, indicating a low key fob battery.
- Physical Inspection: If the key fob looks physically damaged, such as cracks or leaks, the battery may be compromised.
What Kind of Battery Does a Lexus Key Fob Take?
Most Lexus key fobs use a CR2032 or CR2450 3-volt lithium battery. These batteries are readily available at most auto parts stores, electronics stores, and online retailers.
To determine the exact battery type for your specific Lexus model and year, consult your:
- Owner’s Manual: The owner’s manual will list the correct battery type.
- Key Fob: The back of the key fob might have the battery type engraved on it.
How to Replace a Lexus Key Fob Battery
Replacing a Lexus key fob battery is a straightforward process. Here’s a step-by-step guide:
- Gather Your Materials: You’ll need a new CR2032 or CR2450 battery, a small flat-head screwdriver, and your Lexus key fob.
- Open the Key Fob: Locate the small release button or notch on the key fob. Gently press the button or insert the screwdriver into the notch to separate the two halves of the key fob.
- Remove the Old Battery: Carefully pry out the old battery from its compartment. Avoid touching the battery terminals.
- Install the New Battery: Insert the new battery into the compartment, ensuring the positive (+) side faces up.
- Reassemble the Key Fob: Align the two halves of the key fob and press them together until they snap securely back into place.
- Test the Key Fob: Try locking and unlocking your Lexus, as well as starting the engine to verify the new battery is working correctly.
Tips for Replacing Your Lexus Key Fob Battery
Here are some additional tips for a successful key fob battery replacement:
- Handle the Battery with Care: Avoid touching the battery terminals with your fingers. This can discharge the battery.
- Dispose of the Old Battery Properly: Take your old battery to a designated battery recycling center. Do not throw it in the trash.
- Consider Professional Help: If you’re uncomfortable replacing the battery yourself, a Lexus dealership or qualified mechanic can do it for you.
Frequently Asked Questions
How long does a Lexus key fob battery last?
Lexus key fob batteries typically last between 3 to 5 years, depending on usage and environmental factors.
Can I drive my Lexus with a dead key fob battery?
Yes, you can still start and drive your Lexus with a dead key fob battery using the physical key to unlock the door and the “push-to-start” button to ignite the engine.
Can I replace my Lexus key fob battery myself?
Absolutely! Replacing the key fob battery is a simple DIY task that most Lexus owners can easily handle.
What if my Lexus key fob still doesn’t work after replacing the battery?
If your Lexus key fob still doesn’t function correctly after replacing the battery, there might be other issues with the key fob itself, such as a broken button or a problem with the internal circuitry. You might need to have the key fob inspected and repaired or replaced.
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Where can I get my Lexus key fob battery replaced professionally?
You can get your Lexus key fob battery replaced at a Lexus dealership, an authorized service center, or even some auto parts stores.
Conclusion
A dead Lexus key fob battery is a minor inconvenience that can be easily resolved. By following the simple steps outlined in this guide, you can replace the battery yourself and get back to enjoying the convenience of your keyless entry system.
Remember, if you encounter any difficulties or are unsure about any part of the process, don’t hesitate to seek professional assistance from a qualified technician.
