Easy DIY Guide: How To Replace Battery In 2017 Nissan Sentra Key Fob [Updated On- 2025]

To replace the battery in your 2017 Nissan Sentra key fob, use a flathead screwdriver or a plastic pry tool to open the fob. Remove the old CR2025 battery. Align the new battery as shown in the fob. Snap the halves back together. For detailed instructions, check a video guide online.

Begin by locating the small notch on the side of the fob. Insert the screwdriver into this notch and gently pry open the fob. Carefully separate the two halves of the key fob to avoid damaging any components. Next, note the orientation of the old battery before removing it. Place the new CR2032 battery in the same position, ensuring the positive side faces up.

Once the new battery is in place, align the two halves of the fob and firmly press them together until they click into place. Finally, test the key fob to ensure it functions properly.

With the battery replaced, your 2017 Nissan Sentra key fob should be ready to use again. If you encounter issues with the new battery, ensure it is correctly installed. Next, we will explore how to troubleshoot common key fob issues to enhance your experience.

# Table of Contents

What Is the Purpose of the Battery in a 2017 Nissan Sentra Key Fob?

The battery in a 2017 Nissan Sentra key fob is essential for its operation. It provides the power needed to transmit signals to the vehicle for unlocking doors and starting the engine.

According to the Nissan Owner’s Manual, the key fob battery serves as the energy source for remote access functions such as locking and unlocking doors and activating the panic alarm.

The key fob uses a small battery, usually a CR2032 coin cell. This battery powers the electronic components within the fob, enabling wireless communication with the vehicle. A strong battery ensures reliable performance and prevents unexpected failures in keyless entry.

The AAA emphasizes that a weak or dead key fob battery can lead to difficulties in using car functions. Without sufficient power, the fob’s signals may not reach the car, resulting in inconvenience for the driver.

Common causes for battery depletion include frequent use or the battery reaching its natural lifespan. Extreme temperatures may also contribute to diminished battery performance.

Most key fob batteries typically have a lifespan of 2 to 3 years, depending on usage. Reports from several automotive sources indicate that poor key fob maintenance can lead to increased replacement costs as batteries wear out faster.

A weak battery restricts functionality, potentially leaving drivers stranded and disrupting their daily lives. This could affect punctuality, security, and even safety.

Environmental considerations include proper disposal of batteries to prevent pollution. Best practices focus on recycling batteries to minimize environmental impact.

To address battery issues, Nissan recommends regular inspection and timely replacement. Consulting with automotive professionals can also provide tailored maintenance advice.

Strategies include using high-quality batteries and storing the fob in a protective case to minimize wear. Implementing these practices can enhance longevity and performance for key fob batteries.

What Type of Battery Should You Use for a 2017 Nissan Sentra Key Fob Replacement?

The type of battery required for a 2017 Nissan Sentra key fob replacement is a CR2032 battery.

Battery Type: CR2032
Voltage: 3 volts
Availability: Commonly found in stores and online
Compatibility: Used in various key fobs and devices
Lifespan: Typically lasts 2-3 years

The CR2032 battery is widely recognized and used, which provides flexibility when sourcing replacements.

Battery Type: CR2032: The CR2032 battery is a coin cell type battery. It is the specific battery model required to power the 2017 Nissan Sentra key fob. The model reflects its dimensions. The “20” indicates the diameter of 20mm, and the “32” indicates a thickness of 3.2mm. These measurements help ensure a proper fit in the key fob.
Voltage: 3 volts: The CR2032 battery operates at a voltage of 3 volts. This voltage is critical for powering the electronic components of the key fob. A proper voltage ensures the key fob works reliably. If a battery with a different voltage is used, it may lead to malfunction.
Availability: Commonly found in stores and online: CR2032 batteries are widely available, making them easy to replace. Retail stores, specialty electronics shops, and online platforms all stock this battery type. Its popularity facilitates accessibility for consumers in urgent situations.
Compatibility: Used in various key fobs and devices: The CR2032 battery is compatible with numerous devices apart from the Nissan Sentra key fob. These devices include watches, fitness trackers, and various household electronics. This broad compatibility makes the CR2032 a versatile battery choice.
Lifespan: Typically lasts 2-3 years: The typical lifespan of a CR2032 battery is about 2 to 3 years, depending on usage. Regular checks of the key fob’s functionality can indicate when it is time for a replacement. Replacing the battery promptly can prevent inconvenience or issues with keyless entry.

How Can You Recognize Signs That Your 2017 Nissan Sentra Key Fob Battery Is Dying?

You can recognize signs that your 2017 Nissan Sentra key fob battery is dying through several observable indicators. These signs commonly include reduced range, unresponsive key fob, intermittent functioning, and warning lights on the dashboard.

Reduced range: A noticeable decrease in the effective distance between the key fob and the car is a primary sign of a dying battery. For example, if you have to be closer than normal to unlock your car, this could indicate that the battery’s power is weakening.

Unresponsive key fob: If your key fob does not respond immediately or requires multiple tries to lock or unlock your vehicle, this can signal a dying battery. A fully functioning key fob should respond with a single press.

Intermittent functioning: Sometimes, the key fob may work properly for some functions but not others. For instance, it might unlock the doors but fail to start the engine. This inconsistency is often associated with low battery power.

Warning lights: The car dashboard may show a warning light indicating a key fob issue or low battery. This warning serves as an alert that the key fob requires attention.

Recognizing these signs can help prevent inconvenience. If you notice any of these, consider replacing the key fob battery promptly to ensure that it functions correctly.

What Tools Are Required for a 2017 Nissan Sentra Key Fob Battery Replacement?

To replace the battery in a 2017 Nissan Sentra key fob, you will need a few basic tools.

Here are the main tools required for this process:
1. Flathead screwdriver
2. Replacement battery (CR2025)
3. Tweezers (optional)

Having these tools will simplify the battery replacement process significantly.

Flathead Screwdriver:
The flathead screwdriver is essential for opening the key fob. You will use it to carefully pry apart the two halves of the fob. Be cautious to avoid damaging the fob’s casing while doing this.
Replacement Battery (CR2025):
The replacement battery CR2025 is the correct battery model needed for the key fob. This battery type is commonly found in many remote controls and small electronic devices. Ensure that the battery is new to avoid issues with the key fob’s performance.
Tweezers (Optional):
Using tweezers can assist in handling the small battery during replacement. This tool is optional but can make the process easier, especially for those with larger hands.

In conclusion, using the right tools—like a flathead screwdriver, a CR2025 battery, and optionally tweezers—will help you successfully replace the key fob battery for a 2017 Nissan Sentra.

How Do You Safely Open the 2017 Nissan Sentra Key Fob for Battery Access?

To safely open the 2017 Nissan Sentra key fob for battery access, you need to locate the small notch, gently insert a flat-head screwdriver or a similar tool, and pry it open. Follow these steps to ensure access without damaging the fob.

Locate the small notch: Look for a tiny groove or indentation on one side of the key fob. This notch is designed for easy opening.
Use a flat-head screwdriver: Take a small flat-head screwdriver or a plastic prying tool. A plastic tool minimizes the risk of scratching or damaging the fob.
Insert the tool into the notch: Gently insert the screwdriver into the notch. Be cautious; applying too much force can break the case.
Pry the fob open: Carefully twist the screwdriver to create a gap between the two halves of the fob. Gradually work your way around the fob to evenly separate the parts.
Replace the battery: Once open, locate the battery. Remove the old battery by noting its orientation. Insert the new battery, ensuring that it matches the orientation of the original.
Reassemble the fob: Align the two halves of the fob back together. Press firmly until you hear a click, indicating that it is securely closed.
Test the fob: After reassembly, test the key fob to ensure it functions correctly.

Following these steps allows you to safely replace the battery without damaging your key fob.

What Is the Step-by-Step Process to Remove the Old Battery from a 2017 Nissan Sentra Key Fob?

Replacing the old battery in a 2017 Nissan Sentra key fob involves a simple process. The key fob is a remote control used to unlock and start the vehicle. It typically contains a small battery that powers its functions.

According to Nissan, the key fob ensures convenience and security for vehicle access and ignition. As per the vehicle owner’s manual, understanding how to replace the battery can prevent key fob malfunction.

The battery in the key fob may need replacement due to depletion over time. Factors include frequent use, age of the battery, or extreme temperatures affecting battery performance. Regular checks can help identify if the battery needs changing.

Additional definitions from sources like the National Highway Traffic Safety Administration emphasize the key fob’s role in vehicle safety and functionality. A well-functioning key fob depends on a reliable battery.

Over 50% of vehicle owners have faced issues with key fob battery failures at some point, according to a survey by AAA. Regular maintenance and checks can extend battery life and prevent issues.

An ineffective key fob can lead to inconvenience, such as being locked out of the vehicle. It can disrupt daily routines, causing delays and frustration for users.

To replace the battery, one should gather a flathead screwdriver and a CR2032 battery. Follow the steps in the vehicle’s manual for safe removal and replacement to ensure the key fob operates correctly.

Using rechargeable batteries and storing the fob in moderate temperatures can help enhance battery lifespan and performance. Various battery testing technologies also support users in assessing battery health.

How Do You Correctly Install the New Battery in Your 2017 Nissan Sentra Key Fob?

To correctly install the new battery in your 2017 Nissan Sentra key fob, follow these steps: open the key fob, replace the old battery with a new one, and reassemble the fob.

Open the key fob: Use a small screwdriver or a similar tool to pry open the key fob. Gently insert the tool into the seam of the fob and twist slightly. This action will separate the two halves of the casing.
Replace the old battery: Remove the old battery by gently lifting it out of its slot. Note the orientation, as the new battery must be placed in the same way. Insert the new CR2032 battery, ensuring the positive (+) side faces upwards, similar to the original battery placement.
Reassemble the fob: Align the two halves of the key fob and press them together firmly. Ensure that there are no gaps and that the fob is securely closed.

After completing these steps, test the key fob to ensure it works properly. This simple procedure can enhance your key fob’s functionality and ensure you have reliable access to your vehicle.

How Can You Check If Your 2017 Nissan Sentra Key Fob Works After Battery Replacement?

You can check if your 2017 Nissan Sentra key fob works after a battery replacement by testing its functionality with the vehicle and by observing the LED light response.

To ensure your key fob is functioning correctly, follow these steps:

Test the Key Fob with the Vehicle:
– Ensure you are within range of your car. Stand close to the driver’s side door.
– Press the lock or unlock button on the key fob. If the doors lock or unlock, the key fob is working properly.
Observe the LED Light:
– Look for a small LED light on the key fob.
– Press any button on the key fob. If the LED light blinks, it indicates that the fob is sending a signal. If it does not light up, the battery may not be installed correctly or the fob could be malfunctioning.
Use a Secondary Key Fob:
– If available, use a second key fob to check the vehicle’s response.
– Compare the performance of both fobs. If the other key fob works without issue, the original fob may have a problem beyond just the battery.
Check for Interference:
– Ensure there are no electronic devices nearby that could interfere with the signal, such as strong radio frequency devices.
– Stand away from electronic devices and try using the key fob again.
Recheck Battery Installation:
– Open the key fob to confirm the battery is installed correctly, with the positive and negative sides aligned properly.
– Reassemble the key fob and try to use it again.

By following these steps, you can determine whether your 2017 Nissan Sentra key fob is functioning correctly after a battery replacement. If problems persist, you may need to consult a professional for further assistance.

What Maintenance Tips Can Help Extend the Life of Your 2017 Nissan Sentra Key Fob Battery?

To extend the life of your 2017 Nissan Sentra key fob battery, follow several maintenance tips. These practices can help minimize battery drain and ensure reliable operation.

Keep the key fob away from extreme temperatures.
Maintain a clean key fob.
Avoid pressing buttons unnecessarily.
Store the key fob away from electronic devices.
Regularly check the battery status.
Replace the battery proactively.

By implementing these tips, you can enhance the longevity of your key fob battery and improve functionality.

Keep the Key Fob Away from Extreme Temperatures: Keeping your 2017 Nissan Sentra key fob away from extreme temperatures significantly aids in battery life. Extreme heat can evaporate battery fluid, while cold temperatures can slow down chemical reactions inside the battery. Lithium batteries, commonly used in key fobs, perform best in moderate temperatures. Research indicates that temperatures above 140°F (60°C) can exacerbate battery degradation.
Maintain a Clean Key Fob: Maintaining a clean key fob involves removing dirt and debris from both the surface and the seams. Dirt can infiltrate the device, leading to corrosion and potential battery issues. Use a soft, dry cloth to wipe down the fob regularly. A study by the National Institute of Health highlights that regularly cleaned devices can operate 30% more efficiently than neglected ones.
Avoid Pressing Buttons Unnecessarily: Pressing the buttons on the key fob unnecessarily drains the battery. Each press sends a signal to the vehicle, consuming energy. Be mindful of how often the buttons are used and avoid accidental presses. According to a survey from automotive experts, unnecessary button presses can reduce battery life by up to 20%.
Store the Key Fob Away from Electronic Devices: Electronic devices emit electromagnetic interference that can negatively affect key fob performance. Keeping the fob away from such devices can help preserve battery power. For example, mobile phones and Wi-Fi routers should be at a distance to support optimal battery function.
Regularly Check the Battery Status: Regularly checking the status of the battery helps you anticipate replacement needs. Many vehicles provide low battery notifications for the key fob. Keeping an eye on these alerts allows you to replace the battery before it dies, avoiding sudden failures. Research shows that early intervention can extend the overall longevity of electronic devices.
Replace the Battery Proactively: Finally, replacing the battery proactively, even if the fob still works, ensures continued reliability. Key fob batteries typically last between 3 to 5 years. Setting a reminder for replacement can prevent being caught off guard by a dead fob. Per the Nissan owner’s manual, timely replacements contribute to overall vehicle performance and reliability.

By following these maintenance tips, you can effectively extend the lifespan of your 2017 Nissan Sentra key fob battery and reduce the risk of failure.

Related Post: