Is your Lexus GX 460 key fob not working reliably or completely dead? The most common culprit is a dead battery. Replacing the battery in your Lexus GX 460 key fob is a simple and cost-effective DIY task that can save you a trip to the dealership. This guide will walk you through identifying the correct battery and replacing it, ensuring your key fob is functioning like new again.
Lexus GX 460 key fobs typically use either a CR1632 or CR2032 battery. To determine the precise battery for your specific year and model, you can consult your owner’s manual or use online battery finders by inputting your vehicle’s details. These batteries are widely available online and at most stores selling batteries, and usually cost under $6.
Step-by-Step Guide to Replacing Your Lexus GX 460 Key Fob Battery
The process for opening your Lexus GX 460 key fob varies slightly depending on the model year. Here’s a breakdown for both newer and older models:
For Newer Lexus GX 460 Models:
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Locate the Hidden Key: First, find the hidden mechanical key within your key fob. There’s usually a small release button or latch that allows you to slide out the key.
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Insert the Key into the Designated Slot: Once the mechanical key is removed, look for a small slot or opening revealed on the key fob. This slot is specifically designed for using the mechanical key to pry open the case.
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Open the Case: Carefully insert the tip of the mechanical key into the slot and gently twist or lever it. This should separate the two halves of the key fob casing.
For Older Lexus GX 460 Models:
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Identify the Notch: Examine the edges of your key fob for a small notch or seam where the two halves of the case meet.
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Use a Thin Object to Pry: Take a thin, flat object like a small flathead screwdriver or a plastic pry tool. Insert the edge of the tool into the notch.
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Carefully Pry Open the Case: Gently twist or pry the tool in the notch to separate the two halves of the key fob. Be careful not to apply excessive force to avoid damaging the plastic casing.
Once the Key Fob is Open (For All Models):
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Access the Circuit Board and Battery: After opening the case, you’ll see the internal components. Gently lift the circuit board if necessary to reveal the battery underneath.
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Note Battery Orientation: Before removing the old battery, carefully observe how it is positioned in the case. Take note of which side is facing up (usually the positive side marked with a “+”). This is crucial for correct installation of the new battery.
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Remove the Old Battery: Carefully remove the old battery. You might be able to gently pry it out with your fingertip or the same thin tool you used to open the case.
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Install the New Battery: Insert the new CR1632 or CR2032 battery, ensuring it is placed in the correct orientation as you noted earlier. Press it firmly into place to ensure a good connection.
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Close the Key Fob Case: Carefully snap the two halves of the key fob case back together until they are securely closed. Ensure there are no gaps and the case is properly aligned.
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Test Key Fob Functionality: Test your key fob by pressing the buttons to lock, unlock, or start your Lexus GX 460 (if equipped with remote start). If the key fob doesn’t work immediately, double-check the battery orientation and ensure the battery contacts are clean and making good contact with the battery.
Understanding Different Types of Key Fobs
Key fobs come in various designs, each with slightly different features. Knowing the type of key fob you have can be helpful for understanding its functionality and battery replacement process. Here are five common types:
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Standard Remotes: These are basic remotes with buttons for locking, unlocking, and sometimes a panic button. They are straightforward and without extra features.
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Flip Keys: Flip keys integrate a mechanical key that folds out from the remote body, similar to a switchblade. This design protects the key and makes the fob more compact.
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Remote Heads: Remote head keys have the key blade permanently attached and sticking out of the remote. The key blade does not retract or fold away.
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Fobik Keys: Fobik keys are designed with a hidden, separate mechanical key that is not directly connected to the fob itself. The key is usually released by a button or latch and can be completely removed from the fob.
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Smart Keys: Smart keys are often associated with push-to-start ignition systems. They offer features like keyless entry and push-button start, and must be present in the vehicle to start the engine.
Troubleshooting and When to Consider Key Fob Replacement
If replacing the Lexus Gx 460 Key Fob Battery doesn’t solve the problem, here are a few troubleshooting steps:
- Check Battery Contacts: Ensure the metal contacts inside the key fob case are clean and making good contact with the battery. You can gently clean them with a cotton swab and a bit of rubbing alcohol if needed.
- Verify Battery Orientation: Double-check that the new battery is installed in the correct orientation (+ and – sides).
- Try a New Battery (Again): In rare cases, a new battery might be faulty. Try another new battery to rule out this possibility.
If you’ve tried these steps and your Lexus GX 460 key fob still isn’t working, you may need to consider replacing the entire key fob. This could be necessary due to internal damage, water damage, or electronic malfunction. For key fob replacement or programming, it’s recommended to consult with a qualified locksmith or your Lexus dealership.
Replacing your Lexus GX 460 key fob battery is usually a quick fix. By following these steps, you can restore your key fob’s function and avoid unnecessary expenses. For visual guidance, you can also search for step-by-step video tutorials on our YouTube page for Lexus key fob battery replacements.
