Dealing with a dead key fob battery in your Lexus RX350 can be frustrating, especially when you’re in a hurry. This guide provides a comprehensive overview of how to handle this situation, from identifying the problem to getting your RX350 started and replacing the battery. We’ll cover common issues, troubleshooting steps, and helpful tips for RX350 owners, auto repair shop owners, and automotive technicians.
Identifying a Dead RX350 Key Fob Battery
Several signs point to a dying or dead key fob battery. The most obvious is that your RX350 won’t start using the push-button start. You might also notice a weaker signal strength when locking or unlocking your car, or the key fob’s buttons might be less responsive. Sometimes, the car’s dashboard might display a “Key Not Detected” message.
How to Start Your RX350 with a Dead Key Fob Battery
Don’t panic! Even with a dead key fob battery, you can still start your RX350. Lexus has incorporated a backup system for this exact scenario. Locate the small key hidden within your key fob. This mechanical key is used to manually unlock the driver’s side door. Once inside, look for the designated key fob sensor, usually located near the steering column or within the center console. Hold the dead key fob against this sensor while pressing the start button. Your RX350 should start.
Troubleshooting Common Issues
Sometimes, the backup starting procedure might not work immediately. Ensure the key fob is held firmly against the designated sensor. If this doesn’t work, try replacing the key fob battery first. Another potential issue could be a faulty key fob sensor. While rare, this requires professional diagnosis and repair.
Replacing the RX350 Key Fob Battery: A Step-by-Step Guide
Replacing the key fob battery is a simple DIY task. You’ll need a small flat-head screwdriver and a new CR2032 battery, readily available at most stores.
- Open the key fob: Carefully pry open the key fob using the flat-head screwdriver. Look for a small notch or seam where the two halves of the fob connect.
- Locate the battery: Inside the key fob, you’ll see the CR2032 battery.
- Remove the old battery: Gently pry out the old battery using the flat-head screwdriver.
- Install the new battery: Insert the new CR2032 battery, ensuring the positive (+) side faces upwards.
- Close the key fob: Snap the two halves of the key fob back together.
Preventing Future Key Fob Battery Issues
While key fob batteries have a limited lifespan, you can prolong their life by avoiding extreme temperatures and keeping the key fob away from moisture. It’s also a good idea to have a spare CR2032 battery handy, just in case.
Conclusion
Starting an RX350 with a dead key fob battery is straightforward with the backup starting procedure. Replacing the battery is a simple DIY task that can save you time and money. By understanding these procedures and following our tips, you can avoid the frustration of a dead key fob and keep your RX350 running smoothly.
FAQ
- How long does an RX350 key fob battery last? Typically, 2-3 years.
- What type of battery does the RX350 key fob use? A CR2032 battery.
- Can I start my RX350 without the key fob? No, you need the key fob or the mechanical key inside it.
- What if the backup starting procedure doesn’t work? Try replacing the battery or consult a Lexus dealer.
- Where can I buy a replacement CR2032 battery? Most electronics stores, pharmacies, and online retailers.
- Can a dead key fob battery damage my car? No, it will not cause any damage.
- How can I prevent my key fob battery from dying prematurely? Avoid extreme temperatures and moisture.
Related Articles
- Key Fob Programming for Lexus Vehicles
- Troubleshooting Common Lexus Key Fob Issues
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