Is your Lexus Rx350 Key Fob not working? Before you panic, the most likely culprit is a dead battery. Replacing the battery in your Lexus RX350 key fob is a straightforward task you can easily do at home, saving you time and money. This guide will walk you through the process and tell you everything you need to know about your Lexus key fob battery.
Lexus RX350 key fobs commonly use coin cell batteries, typically CR2016, CR2032, or CR1632. To determine the exact battery for your specific Lexus RX350 year and model, you can use online battery finders, or check your owner’s manual. These batteries are inexpensive, usually costing under $6, and readily available online or at most drugstores and electronics stores.
Step-by-Step Battery Replacement for Your Lexus RX350 Key Fob
The method to open your Lexus RX350 key fob varies slightly depending on the model year. Here’s a breakdown for both newer and older models:
For Newer Lexus RX350 Models:
- Locate the Hidden Key: Find the release button or latch on your key fob. Press it to detach and remove the mechanical key.
- Insert the Key: Once the key is removed, you’ll see a slot where the key was housed. Insert the mechanical key into this designated slot.
- Open the Case: Gently twist or lever the key in the slot. This should pop open the key fob casing.
For Older Lexus RX350 Models:
- Find the Notch: Examine the edges of your key fob for a small notch or seam.
- Pry Open the Casing: Use a thin, flat object, such as a small flathead screwdriver or a plastic pry tool, to carefully insert into the notch. Gently twist or pry to separate the two halves of the key fob case. Be careful not to scratch or damage the plastic.
Alt text: Lexus RX350 key fob opened to show internal components and battery compartment for battery replacement.
Once the Key Fob is Open (For All Models):
- Access the Battery: Carefully lift the circuit board if necessary to reveal the battery compartment.
- Note Battery Orientation: Before removing the old battery, take a quick look at how it is positioned in the case (+ side up or down). This will ensure you insert the new battery correctly.
- Remove the Old Battery: Gently pry out the old battery. You might be able to use your fingernail or the tip of a pen.
- Insert New Battery: Place the new battery into the compartment, ensuring it’s in the correct orientation.
- Close the Case: Carefully snap the two halves of the key fob case back together until they are securely closed.
- Test Functionality: Press the buttons on your key fob to test if it is working correctly. If it’s still not working, double-check the battery orientation and ensure the battery contacts are clean and making good contact.
Key Fob Types Explained
Understanding the type of key fob you have can sometimes be helpful. Here are the five main types of key fobs:
- Standard Remotes: Basic remotes with standard lock, unlock, and sometimes panic buttons.
- Flip Keys: Feature a mechanical key that folds into the remote body, similar to a switchblade.
- Remote Heads: The key blade is permanently attached and protrudes directly from the remote.
- Fobik Keys: The key is hidden within the remote but is separate, not directly connected to the fob itself.
- Smart Keys: Often associated with push-to-start ignition systems and offer features like proximity unlocking.
Alt text: Visual representation of different types of key fobs, including a smart key, flip key, and standard remote, illustrating key fob design variations.
What If a New Battery Doesn’t Fix the Problem?
If replacing the battery doesn’t solve the issue with your Lexus RX350 key fob, there might be a more significant problem. In this case, you may need to consider replacing the entire key fob or seeking professional assistance from a locksmith or Lexus dealership.
By following these steps, you can confidently replace your Lexus RX350 key fob battery and get back on the road quickly.
