Is your 2010 Lexus IS250 key fob not working reliably? Before you consider expensive replacements, the solution might be as simple as changing the battery. A dead key fob battery is a very common issue, and fortunately, replacing it yourself is a straightforward process that can save you time and money. This guide will walk you through everything you need to know to replace the battery in your 2010 Lexus IS250 key fob and get you back on the road with a functional remote.
Replacing your Lexus IS250 key fob battery is typically a quick and inexpensive fix. Lexus IS250 key fobs generally use CR1632 and CR2032 batteries, which are widely available online and at most stores selling batteries. These batteries are also quite affordable, usually costing less than $6.
Step-by-Step Guide to Replacing Your 2010 Lexus IS250 Key Fob Battery
The process for opening your Lexus IS250 key fob can vary slightly depending on the age of your vehicle’s remote. Here’s a breakdown of how to open both newer and older style Lexus IS250 key fobs to access the battery compartment:
Tools You’ll Need:
- A new CR1632 or CR2032 battery (refer to your key fob or owner’s manual for the exact type)
- A small flathead screwdriver or the mechanical key from your key fob
Opening Newer Lexus IS250 Key Fobs:
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Locate the Hidden Key: Find the release button or latch on your key fob. Press it to detach and remove the hidden mechanical key.
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Insert the Key: Once the mechanical key is removed, you will see a slot where the key was located. Insert the end of the mechanical key into this slot.
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Pry Open the Casing: Gently twist or lever the mechanical key in the slot. This should begin to separate the two halves of the key fob casing. Carefully pry the case open completely using your fingers or the key.
Opening Older Lexus IS250 Key Fobs:
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Identify the Notch: Look for a small notch or seam on the side of your Lexus IS250 key fob. This is usually located along the edge of the remote.
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Use a Flathead Screwdriver: Insert a thin flathead screwdriver into the notch.
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Pry Open the Casing: Gently twist the screwdriver to pry open the key fob casing at the notch. Be careful not to apply too much force, as you could damage the plastic casing. Work your way around the seam to fully separate the two halves of the key fob.
Replacing the Battery:
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Access the Battery: Once the key fob is open, carefully lift the circuit board to reveal the battery compartment.
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Note Battery Orientation: Before removing the old battery, take a close look at how it is positioned in the case. Note the positive (+) and negative (-) sides to ensure you install the new battery correctly.
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Remove the Old Battery: Gently pry out the old battery. You may be able to use your fingertip or the flathead screwdriver if needed.
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Install the New Battery: Place the new CR1632 or CR2032 battery into the compartment, ensuring it is in the correct orientation (positive side up if that’s how the old one was). Push down firmly to ensure it is securely seated.
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Close the Key Fob: Carefully snap the two halves of the key fob casing back together until they are firmly closed. Ensure there are no gaps and the case is securely sealed.
Testing Your Key Fob:
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Test Functionality: Press the buttons on your key fob to test if it is working correctly. Try locking and unlocking your car, and if applicable, test the panic button and trunk release.
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Troubleshooting: If your key fob still doesn’t work, double-check the battery orientation and ensure the battery contacts are clean and making good contact with the battery. You can try gently cleaning the contacts with a cotton swab and a bit of rubbing alcohol.
If replacing the battery doesn’t solve the issue with your 2010 Lexus IS250 key fob, the problem might be more complex. It’s possible you may need a new key fob programmed for your vehicle. Understanding the type of key fob you have can sometimes help in diagnosing issues. Here are the common types of key fobs:
- Standard Remotes: Basic remotes with lock, unlock, and sometimes trunk release buttons.
- Flip Keys: Keys that have a mechanical key that flips out from the remote body.
- Remote Heads: Keys where the mechanical key is permanently attached to the remote head.
- Fobik Keys: Remotes where the key is separate and hidden inside the fob, not directly connected.
- Smart Keys: Advanced remotes often associated with push-to-start ignitions and keyless entry features.
While battery replacement is often the solution, if problems persist after changing the battery in your 2010 Lexus IS250 key fob, consider exploring key fob replacement options.
