Lexus Key Fob Battery Size: Replacement Options And Instructions For Various Models [Updated On- 2025]

Most Lexus models from 2010 onward use CR1632 or CR1616 batteries for their key fobs. If your key fob has a dead battery, you can still start the car by holding the fob near the start button. When replacing the battery, clean any dirt or corrosion inside the fob for best results.

For models like the Lexus RX series, you can easily access the battery compartment by sliding a small lever or using a flathead screwdriver to pry open the fob. Once opened, you can remove the old battery and replace it with a new one, ensuring the positive side faces the correct direction. For the Lexus ES models, the process is similar, though you may need to press a button to release the battery cover.

Ensure you properly dispose of the old battery according to local regulations. With the new battery in place, test the key fob to ensure proper functionality before resealing it.

Next, we will delve into specific instructions for other Lexus models, highlighting any unique requirements or variations in the battery replacement process. This information will assist you in maintaining your key fob’s reliability across different Lexus vehicles.

# Table of Contents

What Size Battery Does a Lexus Key Fob Take?

The Lexus key fob typically uses a CR2032 battery.

Common battery types for Lexus key fobs:
– CR2032
– CR2016
– CR2025
Perspective considerations:
– Model variation (e.g., older vs. newer models)
– Battery longevity and durability
– Availability and compatibility with specific key fob designs

The following sections will provide detailed explanations for each battery type and their implications for key fob use.

CR2032 Battery:
The CR2032 battery is commonly used in most Lexus key fobs. This battery measures 20mm in diameter and 3.2mm in thickness. Its capacity typically ranges from 220 to 240mAh, providing sufficient power to operate the key fob functions seamlessly. Many users report that the CR2032 battery lasts several years, depending on usage frequency. A prominent example is the Lexus RX series, which commonly employs this battery type.
CR2016 Battery:
The CR2016 battery is thinner than the CR2032, measuring 20mm in diameter and 1.6mm in thickness. This battery has a lower capacity, generally around 90mAh. Some Lexus models, notably those produced around the early 2000s, may utilize this battery. Users may find that while the CR2016 is less common, it is suitable for specific older models of Lexus key fobs.
CR2025 Battery:
The CR2025 battery is another variant, measuring 20mm in diameter and 2.5mm in thickness. It typically has a capacity of 150mAh, striking a balance between the CR2032 and CR2016. This battery is less common among Lexus key fobs but may appear in variations of key fobs depending on model design. Customers should always verify battery compatibility before replacement to ensure proper functionality.

Overall, selecting the correct battery type is crucial for optimal performance of a Lexus key fob.

How Can I Identify the Correct Battery Type for My Lexus Key Fob?

To identify the correct battery type for your Lexus key fob, check the owner’s manual or the existing battery for its specifications.

Owner’s Manual: The most reliable source is your key fob’s section in the vehicle’s owner’s manual. This document typically lists the battery size and type needed specifically for your model.
Existing Battery: If you can access the key fob, open it carefully. Remove the existing battery and observe the markings on it. The battery usually has a code, such as CR2032 or CR1632, indicating its specifications.
Online Resources: Visit the official Lexus website or reputable automotive forums. These platforms often provide detailed instructions on battery types for different models. Community members frequently share their experiences, which can be valuable.
Retail Assistance: If you are unsure, take the existing battery to an auto parts store. Employees can help identify the battery type based on what you provide.
General Compatibility: Most Lexus key fobs use lithium coin batteries. Sizes like CR2032 and CR1632 are common among various models. It’s essential to confirm the exact size for your specific fob to ensure proper functionality.

By using these methods, you can accurately determine the correct battery type for your Lexus key fob.

Which Lexus Models Use Specific Battery Types, Such as CR1632 or CR2025?

The Lexus models that commonly use CR1632 or CR2025 battery types are primarily the key fobs for specific vehicles.

CR1632 Battery Usage:
– Lexus RX series (models 2016 and newer)
– Lexus ES series (models 2018 and newer)
– Lexus NX series (models 2017 and newer)
CR2025 Battery Usage:
– Lexus GX series (models 2014 and newer)
– Lexus IS series (models 2014 and newer)
– Lexus LS series (models 2018 and newer)

Understanding the battery types provides clarity on compatibility and replacement options.

CR1632 Battery Usage:
CR1632 battery usage refers to a type of button cell battery utilized in various Lexus key fobs. This battery is commonly found in models such as the RX, ES, and NX series, especially those produced after 2016. The CR1632 has a diameter of 16mm and a thickness of 3.2mm. It provides reliable performance for keyless entry systems and remote start functions.

Many Lexus owners find that the CR1632 battery lasts for years with standard usage but may need replacing if the key fob shows signs of low battery, such as reduced range or intermittent function. Replacing the battery is simple, often requiring only a small screwdriver and careful prying to access the battery compartment.

CR2025 Battery Usage:
CR2025 battery usage pertains to another type of button cell battery used in specific Lexus models. This battery is prevalent in vehicles such as the GX, IS, and LS series, particularly models released after 2014. The CR2025 measures 20mm in diameter and 2.5mm in thickness, delivering adequate power for key fob operations.

Similar to the CR1632, the CR2025 battery has a long life; however, its lifespan may vary based on individual usage patterns. In cases of diminished responsiveness or failure of key fob functions, replacing the battery is recommended. Customers can typically perform this task easily, ensuring their key fob remains operational without the need for professional assistance.

By understanding the different battery types and their associated models, Lexus owners can efficiently manage their vehicle key fob needs.

How Do I Replace the Battery in My Lexus Key Fob?

You can replace the battery in your Lexus key fob by opening the fob, removing the old battery, and inserting a new one.

Open the key fob: Use a small flathead screwdriver or a coin to gently pry open the key fob. There is usually a seam along the side where you can insert the tool.
Remove the old battery: Once open, locate the battery inside the fob. Note the orientation of the battery. Carefully remove it to avoid damaging any components.
Insert a new battery: Purchase a suitable replacement battery, typically a CR2032 or CR2016. Place the new battery in the same orientation as the old one, ensuring correct polarity (positive side facing up or down as applicable).
Close the key fob: Align the two halves of the fob and press them together until they click into place. Ensure that there are no gaps and that it is securely closed.
Test the key fob: Stand near your vehicle and press the buttons on the fob to verify that it is functioning properly.

Replacing the battery in your Lexus key fob is essential for maintaining secure access to your vehicle. Following these steps ensures that the process remains straightforward and effective. If issues persist after battery replacement, consider consulting a professional.

What Steps Are Involved in Opening My Lexus Key Fob?

Opening your Lexus key fob involves a few straightforward steps. Here’s how to do it easily.

Gather necessary tools (screwdriver, plastic wedge).
Locate the release button or slot on the fob.
Insert a screwdriver or wedge into the slot to open.
Remove the battery carefully.
Replace with a new battery of the correct size.

The steps above provide a clear pathway to opening your Lexus key fob. However, it’s essential to note that different Lexus models may have slight variations in their key fob designs.

Gather Necessary Tools:
Gathering necessary tools means having the right equipment on hand to safely open the key fob without causing damage. Usually, a small flathead screwdriver or a plastic wedge works best.
Locate the Release Button or Slot:
Locating the release button or slot is crucial as this area allows for the safest and most efficient method of opening the fob. Some models feature a small button, while others might have a notch or slot.
Insert a Screwdriver or Wedge into the Slot:
Inserting a screwdriver or wedge into the slot facilitates opening the fob. Applying gentle pressure ensures that you do not crack or damage the fob casing during the process.
Remove the Battery Carefully:
Removing the battery carefully requires a steady hand to prevent bending or breaking any clips or contacts within the fob. It is important to note the orientation of the battery, as the new battery must be inserted in the same manner.
Replace with a New Battery of the Correct Size:
Replacing with a new battery of the correct size ensures that the fob functions properly. Most Lexus key fobs utilize a CR2032 or CR2025 battery, but it’s advisable to verify the specific battery type required for your model.

In summary, opening your Lexus key fob involves the right tools, careful handling, and attention to detail. By following these steps, you can ensure that your fob operates effectively after replacing the battery.

How Do I Safely Remove the Old Battery and Insert the New One?

To safely remove an old battery and insert a new one, follow these steps: ensure the device is powered off, use the correct tools, handle the battery securely, and dispose of the old battery properly.

Ensure the device is powered off: Before starting, turn off the device to avoid accidental shorts. This action prevents damage to both the device and the new battery.
Use the correct tools: Gather necessary tools such as a small screwdriver or a plastic opening tool. Using the right tools helps with safely opening battery compartments without causing damage.
Handle the battery securely: Remove the old battery by gently pulling it out using appropriate grips. Take care not to damage any surrounding components. When inserting the new battery, ensure you align the positive (+) and negative (-) terminals correctly. This alignment is crucial for the battery to function properly.
Dispose of the old battery properly: Follow local regulations for battery disposal. Many areas have designated recycling centers for batteries. Proper disposal prevents environmental harm and complies with safety guidelines.

By following these detailed steps, you can safely remove and replace the battery in your device while ensuring both personal safety and environmental responsibility.

Where Can I Purchase Replacement Batteries for My Lexus Key Fob?

You can purchase replacement batteries for your Lexus key fob at several locations. First, identify the battery type needed for your specific key fob model. Most Lexus key fobs use CR2032 or CR1632 batteries. Next, visit local retailers such as auto parts stores, electronics stores, or pharmacies, where these batteries are commonly available. Online options include websites like Amazon, eBay, and the official Lexus parts website. Additionally, you can check with your Lexus dealership, as they may sell replacement batteries and offer installation services. Always check the compatibility of the battery with your key fob model before making a purchase.

What Are the Best Maintenance Practices for Extending Your Lexus Key Fob Battery Life?

To extend your Lexus key fob battery life, follow these best maintenance practices.

Limit key fob usage.
Store the key fob in a safe location.
Avoid exposure to extreme temperatures.
Replace batteries promptly when needed.
Keep the fob clean and dry.
Disable unnecessary features.

Practicing these maintenance tips can enhance the longevity of your Lexus key fob battery. Each point addresses specific actions that can help maximize battery life.

Limit Key Fob Usage: Limiting key fob usage helps conserve battery life. Frequent use activates the fob’s transmitter, draining power. For example, consider using a physical key for access when possible. Additionally, using the fob only when necessary can reduce wear on the battery.
Store the Key Fob in a Safe Location: Proper storage of the key fob contributes to its longevity. Store it in a cool, dry place, away from moisture and contaminants. This prevents corrosion in the battery compartment and dilutes any potential harm from external elements.
Avoid Exposure to Extreme Temperatures: Extreme temperatures can negatively impact battery performance. High heat may cause battery leaking or evaporation, while severe cold can reduce battery efficiency. The manufacturer warns against leaving the fob in a hot car or outside during winter.
Replace Batteries Promptly When Needed: Promptly replacing batteries when the signal weakens helps prevent further battery drainage. Most Lexus key fobs use CR2032 batteries, which are widely available. It’s advisable to carry a spare battery to ensure immediate replacement.
Keep the Fob Clean and Dry: Keeping the key fob clean helps maintain its function. Dirt and moisture can cause corrosion or hinder connections inside the fob. Regularly wiping the exterior with a soft, dry cloth can help preserve its condition.
Disable Unnecessary Features: Some key fobs come with features that may drain the battery faster, such as keyless entry or remote start. If not regularly used, consider disabling these features to save battery life.

By implementing these strategies, Lexus owners can significantly extend the lifespan of their key fob batteries.

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