Is your 2011 Lexus RX 350 key fob not working? Before you panic or head to the dealership, the most likely culprit is a dead battery. Replacing the battery in your key fob is a simple and cost-effective DIY task. This guide will tell you everything you need to know about the 2011 Lexus Rx 350 Key Fob Battery Size and how to replace it yourself.
Lexus RX 350 key fobs typically use a CR2016, CR2032, or CR1632 battery. To ensure you get the correct replacement, we recommend checking your specific key fob. These batteries are widely available online and at most stores that sell batteries, and they usually cost less than $6.
How to Replace Your 2011 Lexus RX 350 Key Fob Battery
Replacing the battery in your Lexus RX 350 key fob is a straightforward process. The method can slightly vary depending on whether you have a newer or older model key fob. Here’s a step-by-step guide for both types:
For Newer Lexus RX 350 Key Fobs:
- Locate the Hidden Key: Find the hidden mechanical key within your key fob.
- Insert the Key: Identify the designated slot on your key fob casing. Insert the hidden key into this slot.
- Open the Case: Gently use the key to pry open the key fob case. The case should split open at the designated point.
- Access the Battery: Once open, you may need to gently lift the circuit board to fully access the battery compartment.
For Older Lexus RX 350 Key Fobs:
- Find the Notch: Look for a small notch along the seam of your key fob casing.
- Pry Open the Case: Use a thin, flat object, such as a flathead screwdriver or a plastic pry tool, to carefully pry open the case at the notch. Be gentle to avoid damaging the plastic.
- Access the Battery: After the case is open, carefully lift the circuit board if needed to reveal the battery.
Replacing the Battery (For Both Types):
- Note Battery Orientation: Before removing the old battery, take a quick look at how it is positioned in the case. Note the positive (+) and negative (-) sides.
- Remove the Old Battery: Gently remove the old battery. You might be able to pry it out with your fingernail or a small tool.
- Insert the New Battery: Place the new battery into the compartment, ensuring it’s in the correct orientation (positive side up, if applicable, and matching the orientation you noted earlier).
- Close the Case: Carefully snap the key fob case back together until it’s securely closed.
- Test Functionality: Press the buttons on your key fob to test if it’s working correctly. Try locking and unlocking your car remotely.
- Troubleshooting: If the key fob doesn’t work immediately, double-check that the battery is correctly installed and that the battery contacts are clean and making good contact with the battery.
Key Fob Types Explained
Understanding the type of key fob you have can sometimes be helpful. Here are the five common types of key fobs:
- Standard Remotes: Basic remotes with standard lock, unlock, and sometimes panic buttons.
- Flip Keys: These remotes have a key blade attached that flips out, similar to a switchblade.
- Remote Heads: Remotes with a key blade that protrudes directly from the remote and does not retract.
- Fobik Keys: A type of remote where the key blade is separate and hidden inside the fob, not directly connected.
- Smart Keys: Often associated with push-to-start ignition systems, offering features like proximity unlocking and remote start in some cases.
If replacing the battery in your 2011 Lexus RX 350 key fob doesn’t solve the problem, there might be a more significant issue with the key fob itself. In such cases, you may need to consider replacing the entire key fob. However, for most users, a simple battery replacement will restore the functionality of their key fob.
