What Size Fob Battery for Lexus IS 250 Keyless Entry Remote: Replacement Guide

For the 2009 Lexus IS 250 key fob, use a CR1632 battery. The 2009 GX 470 and SC 430 models require a CR1616 battery. Other models such as the ES 350, GS 350, GS 450h, GS 460, IS 350, IS F, LS 460, LS 600h, and LX 570 also use the CR1632 battery.

To replace the battery, start by carefully opening the remote. Use a small flathead screwdriver to pry apart the two halves. Once open, locate the old battery and note its orientation. Remove the old battery and insert the new CR1632 battery in the same position, ensuring the positive (+) side faces up. Finally, reassemble the remote by snapping the two halves back together securely.

Choosing the right size fob battery for a Lexus IS 250 keyless entry remote is vital for seamless operation. Knowing how to replace it can save you time and money. If your remote still does not function properly after the battery change, further troubleshooting is necessary. In the next section, we will explore common issues with keyless entry remotes and effective solutions to address them.

What Size Battery Does a 2009 Lexus IS 250 Key Fob Require?

The 2009 Lexus IS 250 key fob requires a CR1632 battery.

1. Types of Batteries:
   – CR1632
   – Alternative battery options

The choice of a suitable battery for the 2009 Lexus IS 250’s key fob revolves mostly around the CR1632. This battery type is a lithium coin cell battery known for its long shelf life and reliable performance. Car owners can also explore alternative battery options if needed, although compatibility may vary.

2. CR1632 Battery:
   The ‘CR1632 battery’ is a lithium battery commonly used in key fobs, watches, and various electronic devices. It measures 16mm in diameter and 3.2mm in thickness. This battery type provides a nominal voltage of 3 volts and has a capacity of around 140 mAh, making it suitable for devices with low to moderate power consumption.

Replacing the CR1632 battery is straightforward. First, open the key fob by using a small screwdriver to gently pry it apart. Remove the old battery and insert the new CR1632, ensuring the positive side faces up. Reassemble the fob to complete the process. According to user experiences, ensuring a secure fit upon reassembly is important for optimal functionality.

3. Alternative Battery Options:
   The ‘alternative battery options’ for the 2009 Lexus IS 250 key fob include batteries such as the CR1620 or CR1632A. While these batteries may physically fit, their voltage or capacity might differ from the manufacturer’s recommendations. Hence, they may not be reliable for long-term use.

Using an alternative battery could lead to potential issues, such as a shorter lifespan or malfunctioning key fob operations. Therefore, it is advisable to stick with the recommended CR1632. This approach ensures the key fob continues to function correctly, preventing potential inconvenience. Always consult the owner’s manual or a professional if unsure about battery replacement.

How Can You Determine the Correct Type of Battery for Your Lexus IS 250 Fob?

To determine the correct type of battery for your Lexus IS 250 fob, consult your owner’s manual or check the battery compartment of the key fob for specifications.

The battery type for the Lexus IS 250 key fob is typically a CR1632 lithium coin battery. Here are the steps to ensure you choose the correct battery:

1. Consult the Owner’s Manual: The owner’s manual provides specific details about replacement parts, including the battery type for the key fob.

2. Inspect the Key Fob: Open the key fob carefully to check for markings. Look for numbers or specifications inside the battery compartment.

3. Battery Specifications: Generally, a CR1632 battery has the following characteristics:
   – Diameter: 16 mm
   – Thickness: 3.2 mm
   – Voltage: 3 volts

4. Purchase Location: You can buy the battery from local auto parts stores, electronics retailers, or online platforms. Always ensure you buy from a reputable source to avoid counterfeit products.

5. Replacement Process: When replacing the battery, follow these steps:
   – Open the fob carefully without damaging it.
   – Remove the old battery gently.
   – Insert the new battery with the positive side facing upwards.
   – Snap the fob back together securely.

6. Testing: After replacing the battery, test the fob to ensure it works properly to lock and unlock the vehicle.

By following these steps, you can confidently identify and replace the battery for your Lexus IS 250 key fob, maintaining the functionality of your vehicle’s remote access system.

What Steps Are Involved in Replacing the Battery in a Lexus IS 250 Keyless Entry Remote?

To replace the battery in a Lexus IS 250 keyless entry remote, you will need to follow specific steps to ensure proper functionality after replacement.

1. Gather Necessary Tools
2. Open the Key Fob
3. Remove the Old Battery
4. Insert the New Battery
5. Close the Key Fob

Following these steps will ensure a smooth battery replacement process. Now, let’s delve into each step in detail for a clearer understanding.

1. Gather Necessary Tools:
   Gathering necessary tools is vital for replacing the battery in a Lexus IS 250 keyless entry remote. You will need a flathead screwdriver or a similar tool to open the key fob. Additionally, have a new battery ready. The correct battery type is typically a CR1632 or CR2016, depending on your remote. Always check your vehicle’s manual for specifications.

2. Open the Key Fob:
   Opening the key fob involves carefully prying off the back cover. Insert the flathead screwdriver into the seam between the front and back halves of the remote. Gently twist to create an opening, and be cautious not to damage the plastic casing. Some remotes may have a small notch for easier access.

3. Remove the Old Battery:
   Removing the old battery is straightforward. Take note of the orientation of the battery, which is usually noted on the fob. Carefully lift the old battery out of its compartment. You may need to use the screwdriver to help push it out if it’s snugly fitted. Make sure not to touch the circuit board inside the fob to avoid damage.

4. Insert the New Battery:
   Inserting the new battery requires matching the orientation with the markings in the key fob. Place the battery in the compartment, ensuring the positive (+) side is facing the correct direction, often indicated by a symbol inside the fob. Press down gently to secure the battery in place.

5. Close the Key Fob:
   Closing the key fob completes the process. Align the back cover with the front half and press the two sides together until they click. Make sure there are no gaps between the two halves. Finally, test the remote by pressing the buttons to confirm that the new battery works properly.

By following these steps, you can efficiently replace the battery in your Lexus IS 250 keyless entry remote and ensure its reliable functionality.

What Tools Will You Need to Change Your Lexus IS 250 Fob Battery?

To change the battery in your Lexus IS 250 fob, you will need a few essential tools.

1. Flathead screwdriver or coin
2. Replacement battery (CR2032)
3. Tweezers (optional)

These tools will assist you in completing the battery replacement process efficiently. Let’s now delve into how each tool contributes to the task.

1. Flathead screwdriver or coin: You will use a flathead screwdriver or a coin to pry open the key fob. This is necessary because the casing of the fob is securely closed, and a tool will help you create a gap to access the interior. Using a flathead screwdriver minimizes the risk of damaging the fob’s casing.

2. Replacement battery (CR2032): The replacement battery needed for the Lexus IS 250 key fob is a CR2032 battery. This is a commonly used lithium button cell battery, known for its reliability and long-lasting power. It is important to ensure you have the correct battery size to ensure proper functionality.

3. Tweezers (optional): Tweezers can be helpful in handling the small components of the fob, especially when placing the new battery in position. While using fingers works, tweezers provide better precision for managing delicate items, preventing accidental damage.

With these tools at hand, you can successfully change the battery in your Lexus IS 250 key fob. It is a straightforward process that requires minimal technical knowledge.

How Can You Test If the New Battery in Your Lexus IS 250 Fob Is Working Properly?

To test if the new battery in your Lexus IS 250 fob is working properly, you can follow several simple steps, including checking the fob’s functionality, using a smartphone camera, and verifying the vehicle’s response to the fob.

• Check the Fob’s Functions: Press the buttons on the fob to see if they respond. Try locking and unlocking the doors, as well as activating the panic button. If the fob works, it indicates the battery is functioning properly.
• Use a Smartphone Camera: Many fobs utilize infrared signals. Point the fob at the camera of your smartphone and press any button. If you see a light on your smartphone screen (the camera can detect infrared light), the fob is sending a signal, indicating the battery is likely fine.
• Verify Vehicle Response: Stand within a range of about three feet from your Lexus IS 250. Press the fob button to unlock or start the car. If the car responds, it confirms that the battery is working correctly. If it doesn’t, the battery may be defective, or there may be other issues with the fob or vehicle’s keyless entry system.

By following these steps, you can efficiently determine whether the new battery in your Lexus IS 250 fob is operational.

What Maintenance Tips Should You Follow for Your Lexus IS 250 Keyless Entry Remote?

The maintenance tips for your Lexus IS 250 keyless entry remote include regular battery checks and proper handling.

1. Regular battery replacement
2. Keep the remote clean
3. Avoid physical damage
4. Store properly when not in use
5. Test the remote frequently

To ensure longevity and functionality of your keyless entry remote, each of these tips plays a critical role.

1. Regular Battery Replacement:
   Regular battery replacement is essential for the remote to function correctly. Most keyless entry remotes use a lithium coin battery, typically CR1632. According to the manufacturer, replacing the battery every 2-3 years is advisable. Signs of a weak battery include a decreased range or delayed response when pressing buttons.

2. Keep the Remote Clean:
   Keeping the remote clean helps maintain its functionality. Dirt and grime can accumulate around buttons and interfere with their operation. A soft cloth and mild soap solution are enough to clean the device. Avoid using harsh chemicals, as they can damage the plastic casing.

3. Avoid Physical Damage:
   Avoiding physical damage is crucial to preserving the remote’s integrity. Dropping the remote or exposing it to moisture can cause irreversible damage. It is wise to keep the remote in a secure location, such as a designated pocket in a bag or using a protective case.

4. Store Properly When Not in Use:
   Properly storing the remote when not in use prevents accidental damage. If you frequently use multiple vehicles, consider keeping the remote in a safe place, away from heat sources or direct sunlight. Extreme temperatures can affect battery performance and the remote’s circuitry.

5. Test the Remote Frequently:
   Testing the remote frequently ensures it remains functional. By pressing buttons to lock and unlock your vehicle, you can gauge if there are any issues. If the remote fails to work, troubleshooting the battery or seeking professional help may be necessary. Regular testing reduces the risk of being locked out of your vehicle unexpectedly.

Following these maintenance tips will help keep your Lexus IS 250 keyless entry remote in optimal condition.

What Are the Symptoms of a Worn-Out Lexus IS 250 Key Fob Battery?

The symptoms of a worn-out Lexus IS 250 key fob battery include difficulty in locking or unlocking doors, decreased range of the remote, and the key fob not being recognized by the vehicle.

1. Difficulty locking or unlocking doors
2. Decreased operating range
3. Inconsistent responsiveness
4. Warning light on dashboard

These symptoms indicate potential issues with the key fob battery. Understanding each symptom can help ensure proper functioning of your vehicle’s keyless entry system.

1. Difficulty Locking or Unlocking Doors:
   “Difficulties locking or unlocking doors” occur when the key fob struggles to communicate with the vehicle. This can happen if the battery is weak or depleted. When you press the buttons, you may need to do so multiple times or be very close to the car for it to respond. Regular maintenance and timely battery replacement can prevent this hassle.

2. Decreased Operating Range:
   “Decreased operating range” describes how far away you can be from your vehicle to operate the key fob. A healthy key fob typically works from several feet away. A worn-out battery will limit this distance, requiring you to be much closer to the vehicle. This issue can be particularly inconvenient in parking lots or busy areas where quick access is needed.

3. Inconsistent Responsiveness:
   “Inconsistent responsiveness” refers to the key fob either working intermittently or failing to respond altogether. If your key fob only works under certain conditions or at certain times, it likely indicates a failing battery. This can lead to frustration during daily use, as you may be caught off-guard when the key fob decides not to operate.

4. Warning Light on Dashboard:
   “A warning light on the dashboard” may illuminate when the key fob battery is low. This is a clear indicator from the vehicle’s systems that an issue exists with the remote. Ignoring this warning can lead to total failure of the key fob, necessitating immediate attention to avoid being locked out of your vehicle.

Where Can You Purchase Replacement Batteries for Your Lexus IS 250 Key Fob?

You can purchase replacement batteries for your Lexus IS 250 key fob at several locations. Start by visiting local auto parts stores, as they often carry key fob batteries. Popular retailers like Walmart and AutoZone may also have the batteries in stock. Another option is to check online marketplaces such as Amazon or eBay for convenience. Additionally, Lexus dealerships typically sell the correct battery for your key fob. Make sure to confirm the battery type, usually a CR2032, before your purchase.

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