A dead key fob battery can be a frustrating experience, leaving you stranded and unable to access your Lexus RX 350. Luckily, replacing the battery is a quick and easy process you can do yourself with a few simple tools. This guide will walk you through the steps so you can get back on the road in no time.
How to Tell If Your Lexus RX 350 Key Fob Battery is Dead
Before you start digging around for a new battery, it’s essential to confirm that the battery is the actual culprit. Here are a few telltale signs that your Lexus RX 350 key fob battery is on its last legs:
- Decreased Range: You find yourself having to stand closer to your car for the key fob to unlock the doors or start the engine.
- Intermittent Functionality: The key fob works sometimes but not others, or you have to press the buttons repeatedly.
- Warning Lights and Messages: Your dashboard displays a “Key Fob Battery Low” warning message.
If you’re experiencing one or more of these symptoms, there’s a good chance your key fob battery needs replacing.
What You’ll Need for a Lexus RX 350 Key Fob Battery Replacement
The good news is that you won’t need any specialized tools to replace your Lexus RX 350 key fob battery. Here’s what you’ll need:
- A new CR2032 battery: This is the standard battery type for most Lexus key fobs.
- A small flat-head screwdriver: You’ll use this to pry open the key fob casing.
- Optional: A small tray or container: This will help you keep track of the small parts as you disassemble the key fob.
Replacing the Battery in Your Lexus RX 350 Key Fob: A Step-by-Step Guide
Now that you have everything you need, let’s get started:
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Locate the release button on the back of your key fob. It’s usually a small, recessed button near the key ring.
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Press the release button and gently pull out the valet key. This will expose a small slot on the side of the key fob.
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Insert the flat-head screwdriver into the slot and gently pry open the casing. Be careful not to apply too much pressure, as you could damage the key fob.
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Carefully separate the two halves of the key fob casing. You should now see the battery, which is held in place by a small clip or retaining ring.
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Gently lift the old battery out of its compartment. Take note of its orientation so you can install the new one in the same way.
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Insert the new battery into the compartment, making sure the positive (+) side is facing up.
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Align the two halves of the key fob casing and press them together firmly until you hear a click. This indicates that the casing is securely closed.
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Reinsert the valet key and test the buttons on your key fob to ensure they’re working properly.
That’s it! You’ve successfully replaced the battery in your Lexus RX 350 key fob.
Do I Need to Reprogram My Key Fob After Replacing the Battery?
No, you generally don’t need to reprogram your Lexus RX 350 key fob after a simple battery replacement. The key fob should automatically resync with your vehicle once the new battery is installed.
However, if you’re still experiencing issues with your key fob after replacing the battery, you may need to reprogram it. You can find instructions on how to do this in your Lexus owner’s manual. You can also check out our guides on replacing a 2009 Honda Civic key fob battery, a 2018 Honda CRV key fob battery, and a 2007 Honda Civic key fob battery for general information about key fob batteries.
Tips for Maintaining Your Lexus RX 350 Key Fob Battery
Here are a few tips to help prolong the life of your Lexus RX 350 key fob battery:
- Avoid exposing the key fob to extreme temperatures. Both heat and cold can shorten battery life.
- Store the key fob in a safe, dry place when not in use. Moisture can also damage the battery.
- Don’t repeatedly press the buttons unnecessarily. This can drain the battery faster.
Conclusion
Replacing the battery in your Lexus RX 350 key fob is a straightforward task that you can easily do at home. By following the steps outlined in this guide, you can save yourself time and money. Always remember to use a high-quality replacement battery and handle the key fob with care to avoid damage. By proactively maintaining your key fob, you can avoid the inconvenience of a dead battery and ensure smooth and effortless access to your vehicle for miles to come.
