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Lexus Key Fob Replacement: A Complete Guide

Experiencing issues with your Lexus key fob? A malfunctioning key fob can be frustrating, leaving you stranded. This guide will cover everything you need to know about Lexus key fob replacement, from identifying the problem to programming your new fob.

Common Lexus Key Fob Issues

Before we dive into replacements, let’s explore some common issues that might indicate a failing key fob:

  • Decreased Range: Are you standing right next to your Lexus and it’s not unlocking? This diminished range could signal a weak key fob battery or a problem with the fob’s internal components.
  • Unresponsive Buttons: If pressing the buttons on your key fob yields no response from your Lexus, it might be time for a replacement.
  • Intermittent Functionality: Does your key fob only work occasionally? This inconsistency often points to a failing key fob that requires attention.

Lexus Key Fob Battery Replacement: A Quick Fix?

Sometimes, the issue isn’t a faulty key fob, but a dead battery. Replacing the battery is a simple process you can often do yourself at home. Here’s how:

  1. Consult Your Owner’s Manual: Your Lexus owner’s manual will detail the type of battery your key fob uses and how to access the battery compartment.
  2. Open the Key Fob: Use a small screwdriver or a coin to carefully pry open the key fob casing, as directed in your manual.
  3. Replace the Battery: Insert the new battery, ensuring the positive (+) and negative (-) sides are properly aligned.

When to Replace Your Lexus Key Fob

If you’ve replaced the battery and are still experiencing issues, you likely need a new key fob.

Signs You Need a New Key Fob:

  • Physical damage to the key fob
  • Buttons are worn or broken
  • Key fob is wet or has been exposed to extreme temperatures
  • Key fob programming has been lost

Lexus Key Fob Replacement Options

You have several options for replacing your Lexus key fob:

  1. Lexus Dealership: The most expensive option, but they guarantee compatibility and programming.
  2. Certified Automotive Locksmith: A more affordable option, with locksmiths often able to program new keys and fobs.
  3. Online Retailers: The most budget-friendly option, but ensure the key fob is compatible with your Lexus model and year. Programming might be required.

lexus key fob

Programming a New Lexus Key Fob

Programming your Lexus key fob often depends on your Lexus model and year. Some newer models might require professional programming, while others can be programmed at home.

Possible DIY Programming Methods:

  • Two-Key Method: This involves using your existing working key fob to program a new one, following a specific sequence of steps outlined in your owner’s manual.
  • On-Board Programming: Some Lexus models allow you to program a new key fob yourself through the vehicle’s onboard computer system.

replacement key fob for 2013 lexus rx350

Important Note: Incorrectly attempting to program your key fob can potentially disable your existing keys. If you’re unsure, consult a professional.

The Cost of Lexus Key Fob Replacement

The cost of replacing your Lexus key fob can vary widely based on your model year, key fob type, location, and chosen service provider:

  • Lexus Dealership: $250 – $500+
  • Certified Automotive Locksmith: $150 – $350+
  • Online Retailers: $50 – $200+ (programming costs may be additional)

lexus is key fob battery

Preventing Lexus Key Fob Issues

  • Regular Battery Replacement: Change your key fob battery every 2-3 years to prevent unexpected issues.
  • Protective Case: Consider using a protective case for your key fob to minimize wear and tear and safeguard against damage.
  • Avoid Extreme Temperatures: Exposure to extreme heat or cold can damage the internal components of your key fob.

change battery in ford key fob

Lexus Key Fob Replacement: Keeping You on the Road

Dealing with a malfunctioning Lexus key fob can be inconvenient and costly. By understanding the common issues, replacement options, programming methods, and preventative measures, you can ensure smooth and secure access to your Lexus for years to come.

“A little preventative maintenance goes a long way,” says master automotive technician, Jason Carter. “Replacing your key fob battery regularly and protecting your fob from damage can save you from headaches down the road.”

Frequently Asked Questions:

1. Can I still drive my Lexus with a broken key fob?

Yes, you can usually still start your Lexus by inserting the physical key into the ignition cylinder. However, you’ll lose access to keyless entry and other remote functions.

2. How long does it take to program a Lexus key fob?

Programming time varies depending on the model and method, but it generally takes a few minutes to an hour.

3. Can I program a used Lexus key fob to my car?

Used key fobs can sometimes be reprogrammed, but it’s not always guaranteed. Consult with a Lexus dealership or certified locksmith for assistance.

4. What do I do if I lose all my Lexus keys?

If you’ve lost all your keys, contact a Lexus dealership or a certified automotive locksmith. They can cut and program new keys for your vehicle.

how to start a car without key fob

5. My Lexus key fob is wet. What should I do?

Remove the battery immediately and try to dry the key fob thoroughly. If it still doesn’t work after drying, you may need a replacement.

6. How do I know if my Lexus key fob battery needs replacing?

Decreased range and unresponsive buttons are common indicators of a dying key fob battery.

7. Can I prevent my Lexus key fob from breaking?

While not entirely preventable, using a protective case and avoiding exposure to extreme temperatures can prolong the life of your key fob.