A dead key fob battery can be a major inconvenience. If you’re experiencing issues with your Lexus key fob not working properly, like having trouble locking or unlocking your doors, there’s a good chance it’s time to replace the battery. Fortunately, this is a quick and easy task that anyone can do at home with just a few simple tools. In this comprehensive guide, we’ll walk you through the entire process of how to replace battery Lexus key fob for various models.
Understanding Your Lexus Key Fob
Before we delve into the replacement process, it’s helpful to have a basic understanding of your Lexus key fob and its components. Lexus key fobs typically consist of:
- Outer Casing: The plastic housing that encloses the key fob’s internal components.
- Key: A physical key blade that can be used manually unlock the car door in case of emergencies or key fob malfunction.
- Battery: The power source of the key fob, usually a small, flat, round battery.
- Circuit Board: Contains the electronic components that transmit signals to your car.
Gathering the Necessary Tools
To replace your Lexus key fob battery, you will need the following tools:
- Small Flat-head Screwdriver: To pry open the key fob casing.
- New Battery: Refer to your Lexus owner’s manual or look online to find the correct battery model for your specific key fob. Common types include CR2032 or CR2025.
Step-by-Step Guide to Replace Battery Lexus Key Fob
The exact steps may vary slightly depending on your Lexus model year and key fob design. However, the general process remains the same. Here’s a detailed guide:
Step 1: Locate the Battery Compartment
Examine your Lexus key fob for a small seam or notch along the edge. This typically indicates the location of the battery compartment.
Step 2: Open the Key Fob
Carefully insert the tip of the flat-head screwdriver into the seam or notch. Gently pry open the casing. You may need to apply slight pressure, but avoid using excessive force to prevent damage.
Step 3: Remove the Old Battery
Once the casing is open, you’ll see the battery. It might be held in place by a small clip or sit loosely in the compartment. Gently remove the old battery using the screwdriver or your fingernail.
Step 4: Insert the New Battery
Orient the new battery in the same direction as the old one, ensuring the positive (+) and negative (-) terminals are aligned correctly. Gently press the battery into place.
Step 5: Reassemble the Key Fob
Align the two halves of the key fob casing and press them together firmly until you hear a snap or click, indicating the casing is securely closed.
Step 6: Test the Key Fob
Try locking and unlocking your Lexus doors using the key fob to ensure the new battery is working correctly.
Troubleshooting Tips
If you’ve replaced the battery and your Lexus key fob still isn’t working, try these troubleshooting steps:
- Check Battery Orientation: Ensure the new battery is installed correctly with the positive and negative terminals aligned properly.
- Clean the Battery Contacts: Over time, battery contacts can become dirty or corroded, preventing proper connection. Use a cotton swab and rubbing alcohol to clean the contacts on both the battery and the key fob.
- Reprogram the Key Fob: In some cases, you may need to reprogram the key fob to your Lexus after replacing the battery. Refer to your owner’s manual for instructions on how to do this.
If you’ve tried these steps and your key fob is still not working, you may need to consult a professional automotive locksmith or your Lexus dealership for further assistance.
Frequently Asked Questions
How often should I replace my Lexus key fob battery?
Generally, Lexus key fob batteries last between 3 to 5 years. However, it’s a good idea to replace the battery sooner if you notice a decrease in the key fob’s range or responsiveness.
Can I use any battery for my Lexus key fob?
No, it’s crucial to use the correct battery model specified in your owner’s manual or online resources. Using an incorrect battery can damage your key fob.
Can I replace the Lexus key fob battery myself, or do I need to go to a dealership?
Replacing the battery is a simple DIY task you can do at home with basic tools. However, if you’re uncomfortable doing it yourself, you can always visit a dealership or automotive locksmith for assistance.
What if my Lexus key fob still doesn’t work after replacing the battery?
If troubleshooting steps like checking battery orientation and cleaning contacts don’t work, you may need to have your key fob inspected by a professional for potential issues with the circuit board or other internal components.
Conclusion
Learning how to replace battery Lexus key fob is an easy way to save yourself time and money. By following this comprehensive guide, you can successfully replace the battery yourself in just a few minutes. Remember to always refer to your Lexus owner’s manual for model-specific information and safety precautions.