Are you experiencing issues with your 2017 Lexus RX 350 key fob? A common culprit is a low battery. This guide will walk you through everything you need to know about replacing the battery in your Lexus RX 350 key fob, ensuring you can maintain convenient access and security for your vehicle.
Understanding Your Lexus RX 350 Key Fob
The 2017 Lexus RX 350 utilizes a smart keyless entry remote, designed for push-button start vehicles. This sophisticated system relies on a battery-powered fob to communicate with your car. Knowing the specifics of your key fob is the first step in maintaining it.
Key Fob Specifications:
- Model Year Compatibility: 2016, 2017, 2018, 2019, 2020 Lexus RX 350 and RX 450h
- OEM Part Number (Replacement Reference): 89904-0E160, 899040E160
- FCC ID: HYQ14FBB
- IC: 1551A-14FBB
- Board Number: G Board 231451-0010
- Frequency: 315 MHz
- Battery Type: CR2032
- Emergency Key Insert: 69515-30380, 6951530380
- Buttons: Lock, Unlock, Power Door Release (Back Gate), Panic Alarm
Knowing these details ensures you are using the correct replacement parts and battery for your specific key fob.
Symptoms of a Low Key Fob Battery
Recognizing the signs of a weakening key fob battery can prevent you from getting stranded. Here are common indicators:
- Decreased Range: You need to be closer to your vehicle than usual for the remote to lock or unlock the doors.
- Inconsistent Operation: Buttons on the key fob become less responsive, requiring multiple presses.
- Dashboard Warning Light: Some Lexus models display a warning message on the dashboard indicating a low key fob battery.
- Keyless Entry Malfunction: The touch sensors on the door handle may become less sensitive or stop working altogether.
- Push-Button Start Issues: In rare cases, a very low battery might even cause difficulty starting the vehicle with the push-button start.
If you experience any of these symptoms, replacing your key fob battery should be your first step.
Step-by-Step Guide to Replacing Your 2017 Lexus RX 350 Key Fob Battery
Replacing the battery in your 2017 Lexus RX 350 key fob is a straightforward process you can do yourself. Here’s how:
What you’ll need:
- A new CR2032 battery (easily available at drugstores, supermarkets, and online)
- A small flathead screwdriver or a similar thin tool (like a key or a plastic pry tool)
- A soft cloth to protect the key fob
Steps:
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Locate the Emergency Key Release: On the back of your key fob, you’ll find a small release switch or button. Press and hold this to release the emergency mechanical key. Slide the key out and set it aside.
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Pry Open the Key Fob Casing: Once the emergency key is removed, you’ll see a small slot or seam where the two halves of the key fob casing join. Use your flathead screwdriver (or thin tool) to gently pry open the casing at this point. Be careful not to scratch the plastic. The soft cloth can be used to protect the surfaces.
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Remove the Old Battery: With the casing open, you’ll see the CR2032 battery. Note the orientation of the battery (+ side up). Gently pry the old battery out of its holder. You can use your fingertip or the edge of the screwdriver, being careful not to damage the battery compartment.
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Insert the New Battery: Take your new CR2032 battery and insert it into the battery compartment, ensuring the + side is facing upwards, matching the orientation of the old battery. Press down firmly to ensure it is securely seated.
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Reassemble the Key Fob: Carefully snap the two halves of the key fob casing back together until they are securely closed. You should hear a click.
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Test Your Key Fob: Insert the emergency key back into the fob. Test all the buttons on your key fob (lock, unlock, power door release, and panic) to ensure they are working correctly.
Where to Get a Replacement CR2032 Battery
CR2032 batteries are widely available. You can purchase them at:
- Drugstores: CVS, Walgreens, Rite Aid
- Supermarkets: Walmart, Target, Kroger, Safeway
- Electronics Stores: Best Buy, Batteries Plus Bulbs
- Online Retailers: Amazon, eBay
They are inexpensive, typically costing just a few dollars. It’s always a good idea to keep a spare CR2032 battery at home so you’re prepared when your key fob battery starts to weaken.
Key Fob Programming and Additional Information
In most cases, replacing the battery in your 2017 Lexus RX 350 key fob will not require reprogramming. The key fob should function normally after a battery replacement.
However, if you are experiencing issues even after replacing the battery, or if you need a replacement key fob altogether, you have a few options:
- Local Automotive Locksmith: A locksmith specializing in automotive keys can program aftermarket key fobs and cut emergency keys. This is often a more cost-effective option than a dealership.
- Lexus Dealership: Dealerships can program original equipment manufacturer (OEM) key fobs. While potentially more expensive, it ensures you are getting an OEM part.
Important Note: Avoid dealerships if you are using an aftermarket key fob for programming, as they may decline to program it. The key fob mentioned in the original article is an aftermarket replacement, which can be a viable option for replacing a lost or damaged remote.
Conclusion
Maintaining your 2017 Lexus Rx 350 Key Fob Battery is a simple task that can save you from inconvenience. By understanding the symptoms of a low battery and following these easy steps for replacement, you can ensure your keyless entry system remains reliable. Remember to use the correct CR2032 battery and test your key fob after replacement. For any more complex issues or replacement key fobs, consult a trusted automotive locksmith or your Lexus dealership.
