Is your 2009 Lexus IS250 key fob电池 dead or not working as reliably as it used to? The most common culprit is a depleted battery. Replacing your key fob battery is a straightforward task you can easily do yourself, saving you time and money compared to dealership service. This guide will tell you everything you need to know about the 2009 Lexus Is250 Key Fob Battery Size and how to replace it.
What Battery Size Does a 2009 Lexus IS250 Key Fob Need?
For the 2009 Lexus IS250, your key fob typically utilizes two types of batteries depending on the specific model and features of your remote: CR1632 and CR2032 batteries. It’s best practice to open your key fob and check the existing battery before purchasing replacements to ensure you get the correct size. Both CR1632 and CR2032 batteries are widely available online and at most stores selling batteries. They are also quite inexpensive, usually costing less than $6.
Alt text: CR2032 battery displayed close-up, highlighting its size and markings for Lexus key fob battery replacement.
Step-by-Step Guide to Replacing Your 2009 Lexus IS250 Key Fob Battery
Replacing the battery in your 2009 Lexus IS250 key fob is a simple process. Here’s how to do it:
Opening Your Key Fob
The method for opening your Lexus IS250 key fob can vary slightly depending on whether you have an older or newer style fob.
For Newer Lexus IS250 Key Fobs:
- Locate the Hidden Key: First, find the hidden mechanical key within your key fob. There’s usually a small release button or latch that allows you to slide out the metal key.
- Insert the Key: Once you’ve removed the mechanical key, look for a designated slot or notch where the key can be inserted to pry open the fob casing.
- Pry Open the Case: Carefully insert the end of the mechanical key into the slot and gently twist or pry to separate the two halves of the key fob.
For Older Lexus IS250 Key Fobs:
- Find the Notch: Examine the edges of your key fob for a small notch or seam. This is where you’ll insert a tool to open the case.
- Use a Thin Tool: Take a thin, flat object like a small flathead screwdriver or a plastic pry tool.
- Pry Open at the Notch: Carefully insert the tip of your tool into the notch and gently twist or pry to separate the two halves of the key fob casing. Be careful not to apply too much force to avoid damaging the plastic.
Replacing the Battery
- Access the Battery: After opening the key fob, you may need to gently lift the circuit board to fully access the battery compartment.
- Note Battery Orientation: Before removing the old battery, take a moment to observe how it is positioned in the case. Note the “+” (positive) and “-” (negative) sides to ensure you install the new battery correctly.
- Remove the Old Battery: Carefully remove the old battery. You might be able to pry it out gently with your fingertip or the same thin tool you used to open the case.
- Insert the New Battery: Place the new CR1632 or CR2032 battery into the compartment, ensuring it’s oriented in the same way as the old one (matching the positive and negative markings).
- Close the Case: Carefully snap the two halves of the key fob case back together until they are securely closed.
Test Your Key Fob
After replacing the battery and reassembling your key fob, test its functionality. Press the buttons to lock, unlock, and activate other functions of your Lexus IS250. If the key fob doesn’t work immediately, double-check the battery orientation and ensure the battery contacts are clean and making good contact with the battery.
Video Instructions for Lexus Key Fob Battery Replacement
For visual learners, step-by-step video instructions can be incredibly helpful. You can find videos specifically for Lexus key fob battery replacement on platforms like YouTube. KeyFobsPlus also has a YouTube page where you can search for “Lexus” and potentially find a video guide for your specific type of Lexus key fob or a similar model. Even if you don’t find a video for the exact 2009 Lexus IS250 key fob, watching a video for a similar type of remote can still provide valuable visual guidance.
Understanding Different Types of Key Fobs
While focusing on battery replacement, it’s helpful to understand the different types of key fobs you might encounter:
- Standard Remotes: Basic remotes with standard lock, unlock, and sometimes panic buttons.
- Flip Keys: Remotes with a physical key that folds out, similar to a switchblade.
- Remote Heads: Remotes where the key blade is fixed and protrudes directly from the remote body.
- Fobik Keys: Keys where the key blade is separate from the remote fob and can be hidden or detached.
- Smart Keys: Advanced remotes often associated with push-to-start ignition systems, offering features like proximity unlocking and remote start.
Knowing the type of key fob you have can sometimes help in understanding its battery replacement process or troubleshooting issues.
When Battery Replacement Isn’t Enough
In most cases, replacing the battery will solve the issue of a non-working or weak key fob. However, if you’ve replaced the battery and your 2009 Lexus IS250 key fob still isn’t functioning correctly, there might be a more significant problem. In such instances, you may need to consider replacing the entire key fob. This could involve programming a new key fob to your vehicle, which might require professional assistance from a locksmith or dealership.
Replacing your 2009 Lexus IS250 key fob battery is usually a quick and easy fix. By knowing the correct 2009 Lexus IS250 key fob battery size and following these steps, you can restore your key fob’s functionality and avoid unnecessary expenses.
