How To Replace A 2014 Lexus Key Fob Battery: Easy Step-by-Step Instructions [Updated On- 2025]

To replace a 2014 Lexus key fob battery, keep your hands dry. Press the release button to take out the mechanical key. Use a screwdriver to open the key fob cover. Remove any electronic key module if present. Take out the old battery and insert the new one. Finally, reassemble the fob securely.

Next, take the new battery, which is typically a CR1632 type. Insert the new battery in the same orientation as the old one. Ensure it fits snugly within the compartment. After replacing the battery, bring the two halves of the key fob back together. Press firmly until you hear a click, indicating the fob is securely closed.

Finally, test the key fob to ensure it works properly by locking and unlocking the doors of your Lexus.

In the next section, we will discuss troubleshooting common key fob issues and when to seek professional help. This will help you understand how to maintain your key fob effectively and avoid potential problems.

# Table of Contents

What Tools Do You Need to Replace a 2014 Lexus Key Fob Battery?

To replace a 2014 Lexus key fob battery, you need specific tools and materials.

Small flathead screwdriver or plastic prying tool
New CR2032 battery
Clean cloth or microfiber cloth
Optional: Tweezers for handling small components

These tools will assist you in successfully replacing the battery without damaging the key fob. Now, let us explore each of these tools and their importance in the process.

Small Flathead Screwdriver or Plastic Prying Tool: A small flathead screwdriver or a plastic prying tool helps open the key fob casing without causing scratches or damage. The screwdriver is often used to gently pry apart the two halves of the fob. A plastic tool reduces the risk of scratching the surface.
New CR2032 Battery: The CR2032 battery is a small, round lithium battery that powers the key fob. Ensuring you have an authentic CR2032 battery is crucial for proper functioning. Many electronics stores and online retailers carry this battery.
Clean Cloth or Microfiber Cloth: A clean cloth helps keep the battery and key fob contacts free from dirt and debris. It’s important to maintain cleanliness to ensure a good connection when the new battery is inserted.
Optional: Tweezers for Handling Small Components: Tweezers can be useful, especially if you have difficulty handling small parts within the fob. Using tweezers can prevent dropping or damaging delicate components during the battery replacement.

Having the right tools ensures the battery replacement process is smooth and successful. Using improper tools may lead to damage or inadequate replacement, impacting the key fob’s performance.

How Do You Open a 2014 Lexus Key Fob Safely?

To open a 2014 Lexus key fob safely, follow these steps: use a flat tool to pry open the key fob, remove the battery carefully, and reassemble the fob securely.

Opening the key fob involves a few detailed steps to ensure you handle it safely and effectively:

Flat Tool Use: Take a small, flat tool like a screwdriver or a plastic prying tool. Insert the tool into the seam of the key fob. This helps to avoid damage to the casing.
Prying Open: Gently twist the tool to create a gap. Apply caution to prevent cracking the plastic. Continue working around the fob until it separates into two halves.
Battery Removal: Identify the battery type, which is typically a CR2032 coin cell. Note the positive (+) and negative (-) sides. Carefully pop out the old battery using the flat tool.
Insert New Battery: Align the new battery according to the positive and negative indications. Firmly push it into place until it clicks.
Reassembly: Align the two halves of the fob together. Press them gently to snap them back together. Make sure there is no gap, indicating it is secure.

By following these steps, you can safely open your 2014 Lexus key fob and replace the battery without causing damage. This preserves the integrity of the fob and ensures it functions correctly.

What Type of Battery Should You Purchase for a 2014 Lexus Key Fob?

The type of battery you should purchase for a 2014 Lexus key fob is a CR1632 lithium battery.

Key points to consider when selecting this battery include:
1. Battery type (CR1632).
2. Battery size (16mm diameter and 3.2mm thickness).
3. Battery chemistry (lithium).
4. Brand options (Energizer, Duracell, Panasonic).
5. Availability (local stores vs. online shopping).

Understanding these key attributes can help you make an informed purchase.

Battery Type (CR1632):
The battery type for a 2014 Lexus key fob is CR1632. This is a common type of coin cell battery used in various electronics, including key fobs. Coin cells are small, round batteries that provide a stable voltage for portable devices.
Battery Size (16mm Diameter and 3.2mm Thickness):
The CR1632 battery has specific dimensions of 16mm in diameter and 3.2mm in thickness. Accurate sizing is crucial because fitting the wrong size can prevent the key fob from functioning properly. Always confirm measurements before purchase.
Battery Chemistry (Lithium):
The chemistry of the CR1632 battery is lithium. Lithium batteries have a high energy density and longevity. This means they can last longer than many other types of batteries, providing reliable power for your key fob.
Brand Options (Energizer, Duracell, Panasonic):
Several reputable brands manufacture the CR1632 battery. Common options include Energizer, Duracell, and Panasonic. You may choose one based on personal preference or reviews relating to performance and longevity.
Availability (Local Stores vs. Online Shopping):
CR1632 batteries are widely available. You can find them in local automotive stores, electronics shops, or major retail outlets. They are also available online through various retailers, offering convenience and often competitive pricing.

These factors should help you confidently choose the right battery for your key fob needs.

How Do You Properly Remove the Old Battery from a 2014 Lexus Key Fob?

To properly remove the old battery from a 2014 Lexus key fob, you need to follow a series of simple steps that involve opening the fob, taking out the old battery, and ensuring proper disposal.

Locate the seam: Find the seam where the two halves of the key fob come together. This is usually a visible line on the side of the fob.
Use a flat tool: Take a flat tool, such as a small screwdriver or a coin, and gently insert it into the seam. Twist the tool to create a gap between the two halves of the fob.
Open the fob: Carefully pry apart the key fob halves. Be cautious not to apply too much force, as this can damage the fob casing.
Identify the battery: Once the fob is open, locate the battery within. It is usually a round, silver button cell battery.
Remove the old battery: Gently lift the battery out of its compartment using your fingers or the flat tool. Take note of the battery’s orientation, as you will need to place the new battery in the same way.
Dispose of the battery: Dispose of the old battery properly by recycling it at a designated battery recycling location. Do not throw it in regular trash.

These steps will allow you to safely and effectively remove the old battery from your 2014 Lexus key fob, preparing it for a new battery installation.

What Steps Should You Follow to Insert the New Battery into a 2014 Lexus Key Fob?

To insert a new battery into a 2014 Lexus key fob, follow these clear steps:

Gather necessary items (flathead screwdriver, new battery).
Open the key fob using a flathead screwdriver.
Remove the old battery.
Insert the new battery.
Reassemble the key fob.

Next, let’s explore these steps more thoroughly.

Gather Necessary Items:
You need to collect specific items before starting the battery replacement. This includes a flathead screwdriver and the new battery, which should be a CR1632 type. This specific battery type is widely accepted and can be easily found in stores or online.
Open the Key Fob:
Open the key fob by carefully using a flathead screwdriver. Insert the screwdriver into the small slot on the side of the fob and twist gently to separate the two halves. It is essential to do this carefully to avoid damaging the key fob exterior or the internal components.
Remove the Old Battery:
Once opened, locate the old battery within the fob. Gently pry it out using the flathead screwdriver, taking care not to touch any electronic components inside. Note that the battery usually has markings indicating the positive (+) and negative (-) sides.
Insert the New Battery:
Insert the new battery by placing the positive side facing upwards, aligning it in the same direction as the old battery. Ensure it fits snugly in its compartment without excessive force. Proper alignment is crucial for the fob to function correctly after reassembly.
Reassemble the Key Fob:
Finally, reassemble the key fob by pressing the two halves back together until you hear a click. Ensure that it is securely closed, and test the function of the remote controls to confirm that the battery replacement was successful.

Following these steps will help ensure that your 2014 Lexus key fob operates correctly with the new battery.

How Do You Reassemble the 2014 Lexus Key Fob After Replacement?

To reassemble the 2014 Lexus key fob after replacing the battery, follow these steps: make sure to correctly position the battery, align the key fob halves, and seal them together securely.

Position the battery: Insert the new battery into the key fob ensuring the positive (+) side is facing upwards. Check the battery type, which is typically a CR1632 for the 2014 Lexus key fob.
Align the key fob halves: Take the two halves of the key fob and line up the grooves. Ensure that all edges fit properly to avoid any gaps.
Seal the fob: Press the two halves together firmly. You should hear a click when they fit together correctly. Make sure all sides are closed securely to prevent moisture or dirt from entering.
Test the key fob: After reassembling, test the fob by using the lock and unlock functions. If the fob does not work, recheck the battery orientation and ensure the fob is tightly sealed.

Following these steps will ensure that your Lexus key fob is correctly reassembled and functions as intended.

How Can You Test if the Replacement Battery Works Correctly in Your 2014 Lexus Key Fob?

You can test if the replacement battery works correctly in your 2014 Lexus key fob by following a straightforward process that includes ensuring proper installation, checking functionality, and observing the response range.

To verify if the new battery is operating properly, consider the following steps:

Check installation: Ensure the battery is installed correctly. The positive (+) side of the battery should face the same direction as indicated in the key fob. Misalignment can prevent proper contact.
Test the key fob functions: Press the buttons on the key fob to see if they respond. Test all functions, including lock, unlock, and panic buttons. If the key fob operates as expected, the battery is likely working.
Observe the response range: Stand a few feet away from your vehicle and attempt to use the key fob. A functioning battery will allow you to lock or unlock the doors from a reasonable distance, typically within 30 feet of the vehicle. If the range is significantly reduced, the battery may not be functioning properly.
Perform a re-sync if necessary: If the key fob does not respond, you may need to re-sync it with the vehicle. This process can vary but typically involves inserting the key into the ignition and turning it without starting the engine while pressing the unlock button.

By following these steps, you can confirm whether the new battery is working correctly. If issues persist, consider replacing the battery again or consulting with a professional.

What Are Some Common Errors to Watch Out for When Changing a 2014 Lexus Key Fob Battery?

Common errors to watch out for when changing a 2014 Lexus key fob battery include improper battery orientation, damage to the fob casing, and failure to reset the fob after battery replacement.

Improper Battery Orientation
Damage to the Fob Casing
Failure to Reset the Fob
Using the Wrong Battery Type
Not Testing the New Battery

Improper Battery Orientation: When changing the battery, improper battery orientation can occur if the new battery is not placed in the correct position. The positive (+) and negative (-) terminals of the battery must align with the markings inside the key fob. If not installed correctly, the key fob will not function.

Damage to the Fob Casing: Damage to the fob casing can occur during battery replacement. This may happen if excessive force is used while opening or closing the key fob. A damaged casing can compromise the protection of the fob’s internal components, leading to malfunction.

Failure to Reset the Fob: Failure to reset the fob after changing the battery can lead to problems. Many key fobs, including those for the 2014 Lexus, require reprogramming to work with the vehicle again. Not performing this step can make the key fob unresponsive.

Using the Wrong Battery Type: Using the wrong battery type can result in damage to the key fob or failure to power the device. The 2014 Lexus key fob typically requires a CR2032 battery. Using a different battery may lead to complications and potential malfunction.

Not Testing the New Battery: Not testing the new battery after installation can lead to assumptions about the key fob’s condition. It’s important to ensure the key fob functions correctly before reassembling it fully. Testing confirms that the new battery is operational and correctly installed.

How Frequently Should You Consider Changing a Key Fob Battery for a 2014 Lexus?

You should consider changing the key fob battery for a 2014 Lexus every one to two years. This timeframe ensures optimal performance of the key fob. Regular battery checks help prevent unexpected failures. If the key fob shows signs of weakness, such as decreased range or unresponsiveness, replace the battery immediately. This proactive approach maintains functionality and convenience.

Where Are the Best Places to Buy Replacement Batteries for a 2014 Lexus Key Fob?

The best places to buy replacement batteries for a 2014 Lexus key fob include auto parts stores, electronics stores, and online retailers. Auto parts stores, such as AutoZone or O’Reilly Auto Parts, typically stock key fob batteries. These stores provide assistance in identifying the correct battery type. Electronics stores, like Best Buy, also offer batteries suitable for key fobs, often with knowledgeable staff to help customers. Online retailers, such as Amazon, provide a wide selection and competitive prices, allowing you to compare options easily. You can also check with your local Lexus dealership for official batteries, although this option may be more expensive. Overall, these locations provide reliable and convenient options for purchasing replacement batteries.

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