Have you ever been stranded, pressing your Nissan key fob buttons to no avail? A dead key fob battery is a common inconvenience for Nissan owners, but thankfully, it’s a simple fix. Understanding the correct Nissan Key Fob Battery Size is the first step to getting back on the road quickly. This guide will not only walk you through identifying the right battery size for your Nissan key fob but also provide comprehensive steps to access your vehicle with a dead fob and replace the battery yourself.
You might be surprised to learn that even with a dead battery, your Nissan is still accessible and drivable. Let’s explore how to handle this situation and ensure you’re never locked out.
Accessing Your Nissan with a Dead Key Fob Battery
Before worrying about the Nissan key fob battery size, your immediate concern is likely gaining entry to your vehicle and starting the engine. Nissan Intelligent Key fobs are designed with a mechanical backup for just this scenario. Here’s how to use the hidden emergency key:
Using the Emergency Key
Every Nissan Intelligent Key fob contains a physical emergency key. Here’s how to access and use it:
- Locate the small release latch or button on the back of your key fob.
- Press and hold the release while pulling out the emergency key from the bottom of the fob.
- Use the physical key to manually unlock your Nissan door, just like a traditional key.
Starting Your Nissan with a Dead Fob Battery
Once inside your Nissan, starting the engine is still possible even with a dead key fob battery. The process varies slightly depending on whether your Nissan has a key fob port:
If your Nissan has a key fob port:
- Locate the key fob port inside your vehicle. This is often found on the steering column or dashboard.
- Insert the entire key fob into the port.
- Press the brake pedal (or clutch for manual transmissions).
- Press the START/STOP button to start your engine.
If your Nissan does NOT have a key fob port:
- Step firmly on the brake pedal (or clutch).
- Press the Nissan key fob directly against the START/STOP button.
- While holding the fob against the button, press the START/STOP button again to start the engine.
These methods allow you to operate your Nissan and get to a place where you can address the dead key fob battery.
Identifying Your Nissan Key Fob Battery Size
Now that you know how to access and start your Nissan with a dead fob, let’s focus on identifying the correct Nissan key fob battery size. Knowing the right battery is crucial for a successful replacement.
The Nissan key fob battery size isn’t universal across all models and years. While some models may use the same battery, variations exist. Common battery sizes for Nissan key fobs include:
- CR2025: This is a 3V lithium battery, frequently used in various electronic devices, including some Nissan key fobs.
- CR2032: Another 3V lithium battery, slightly thicker than the CR2025 and often offering a longer lifespan. This is also a common Nissan key fob battery size.
How to determine your Nissan key fob battery size:
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Consult Your Owner’s Manual: The most reliable source is your Nissan owner’s manual. Locate the section on key fobs or keyless entry, and it should specify the exact battery type required for your vehicle’s key fob.
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Open Your Key Fob and Inspect the Old Battery: If you don’t have your owner’s manual readily available, you can carefully open your Nissan key fob (as detailed in the battery replacement steps below). Once opened, the dead battery will be visible. The battery type (e.g., CR2025 or CR2032) is always printed directly on the battery itself.
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Online Resources and Retail Websites: Many online retailers that sell batteries have battery finders or compatibility charts. You can often input your Nissan model and year to find the recommended Nissan key fob battery size. However, always double-check this information with your owner’s manual or by inspecting the old battery to ensure accuracy.
Knowing the correct Nissan key fob battery size beforehand saves you time and ensures you purchase the right replacement battery.
Step-by-Step Guide to Nissan Key Fob Battery Replacement
Replacing your Nissan key fob battery is a straightforward process you can easily do yourself in a few minutes. Once you have the correct Nissan key fob battery size, follow these steps:
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Remove the Emergency Key: Flip your Nissan key fob over and locate the release button or latch. Press it to detach and remove the emergency key.
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Pry Open the Key Fob: Carefully inspect the key fob casing. You’ll typically find a small notch or seam where you can split the two halves of the fob. Insert a small flathead screwdriver or a similar thin, flat tool into this notch. Gently twist or pry to separate the front and back halves of the key fob. Avoid using excessive force to prevent damage to the casing.
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Remove the Old Battery: Once the key fob is open, you’ll see the old battery. Take note of its orientation (positive side up or down) before removal. Gently pry out the old battery. A small screwdriver or your fingernail can be helpful.
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Insert the New Battery: Take your new battery of the correct Nissan key fob battery size (e.g., CR2025 or CR2032). Install the new battery in the same orientation as the old one. Ensure it’s securely seated in the battery compartment.
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Reassemble the Key Fob: Carefully align the two halves of the key fob casing. Press them firmly together until they click back into place. Ensure there are no gaps and the casing is securely closed.
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Replace the Emergency Key: Slide the emergency key back into its slot in the key fob until it clicks and is securely held in place.
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Test Your Key Fob: Press the buttons on your key fob to test if it’s working correctly. The doors should lock and unlock, and the panic button should function.
When to Seek Professional Help
While battery replacement is simple, certain key fob issues require professional assistance.
- Key Fob Reprogramming: If you replace the key fob itself or if reprogramming is needed for other reasons, this is typically a dealership service. Nissan recommends professional reprogramming as it involves erasing and rewriting the key’s memory.
- Persistent Key Fob Issues: If you’ve replaced the battery and your key fob still isn’t working correctly, there might be a more complex issue. In such cases, contacting a Nissan dealership or a qualified automotive locksmith is advisable.
For routine Nissan key fob battery size identification and replacement, this guide provides you with the necessary information to handle it yourself. However, for more intricate problems, professional help ensures proper resolution.
Frequently Asked Questions about Nissan Key Fob Batteries
What kind of battery does a Nissan key fob take?
As mentioned, common Nissan key fob battery sizes are CR2025 and CR2032, both 3V lithium batteries. The exact type can vary by Nissan model and year. Always check your owner’s manual or the old battery for the precise type.
Can you replace a Nissan key fob battery by yourself?
Yes! Replacing a Nissan key fob battery is designed to be a user-friendly process. With the correct battery and this guide, you can easily do it in under 10 minutes.
What happens if my Nissan key battery dies completely?
Even with a dead key fob battery, you can still access and start your Nissan using the emergency key and the key fob port or START/STOP button method as described earlier. You won’t be stranded!
By understanding your Nissan key fob battery size and following these steps, you can confidently maintain your key fob and avoid the inconvenience of a dead battery. For any further assistance or if you prefer professional service, don’t hesitate to contact Tom Wood Auto Group’s service department.
