Most Nissan key fobs use a CR2032 or CR2025 coin battery that you can replace yourself in under five minutes
The battery in your Nissan key fob will eventually lose power. When it does, you do not need to visit a dealer or pay for a replacement fob. You can open the fob yourself, identify which battery type it uses, and swap in a new one from any pharmacy, grocery store, or hardware store for a few dollars.
The exact battery type depends on your Nissan model year and fob design, but the most common are the CR2032 (used in most recent Nissan fobs) and the CR2025 (used in some older models). Both are standard coin-cell batteries sold everywhere. The process is the same for either: pry open the fob case, remove the old battery, note which side faces up, and insert the new one the same way.
Key Takeaways
- Nissan key fobs most commonly use CR2032 or CR2025 coin-cell batteries, both available at drugstores and supermarkets for under $5.
- You can open most Nissan fobs by inserting a flat tool (coin, flathead screwdriver, or plastic pry tool) into the seam and gently twisting to separate the two halves.
- Note the orientation of the old battery before you remove it — the new battery must face the same direction, with the positive (+) side usually facing up.
- If your fob does not open easily or you are unsure which battery type it uses, your Nissan dealer can replace it for $50 to $100, or you can check your owner's manual for the exact model number.
Identify your Nissan fob type and battery
Before you buy a replacement battery, you need to know which type your fob uses. The easiest way is to open the fob and look at the battery itself — the type is printed on it. If you do not want to open it first, check your Nissan owner's manual, which lists the battery type in the key fob section. You can also call your Nissan dealer with your vehicle identification number (VIN) and model year, and they will tell you over the phone.
CR2032 is the most common battery in Nissan fobs from the 2010s onward. CR2025 appears in some older models and a few recent ones. Both are the same diameter but slightly different thickness. Buying the wrong one will not damage anything — it straightforward will not fit properly or make good contact. If you are unsure, buy a CR2032 first, since it is more common; if it does not fit, you can exchange it.
Tools and materials you need
You need only two things: a new battery (CR2032 or CR2025, depending on your fob) and a flat tool to pry open the case. A coin works well. A flathead screwdriver, plastic pry tool, or even a butter knife will also work. Do not use a sharp knife or anything that could slip and cut your hand.
Some Nissan fobs have a small slot or seam designed for a coin, making the job even easier. Others require you to find the seam between the two halves of the plastic case. Either way, the tool is just to create enough leverage to separate the halves — you are not forcing anything.
Step-by-step process to replace the battery
Step 1: Locate the seam. Hold the fob in your hand and look for the line where the two plastic halves meet. It usually runs around the edge of the fob. Some fobs have a small slot or notch on one side — this is where you insert your tool.
Step 2: Insert your tool and gently pry. Place your coin or flathead screwdriver into the seam or slot and explore gentle, steady pressure. Twist slightly if needed. The two halves should begin to separate. Do not force it — if it is not moving, you may be in the wrong spot. Try a different part of the seam.
Step 3: Separate the halves. Once you have created a small gap, you can usually pull the two halves apart by hand. Set one half aside in a safe place where the small internal parts will not fall out or get lost.
Step 4: Note the battery orientation. Look at the old battery before you touch it. The side facing up is usually marked with a + (positive) symbol. This is the orientation your new battery must match. Take a photo with your phone if you think you might forget.
Step 5: Remove the old battery. Gently pry or lift the old battery out of its slot. It should come out easily. If it is stuck, a small plastic tool or the edge of a coin can help, but do not scratch the fob case.
Step 6: Insert the new battery. Place the new battery into the slot with the positive (+) side facing the same direction as the old one. It should sit flat and make contact with the metal contacts on both sides of the slot.
Step 7: Snap the fob back together. Align the two halves and press them together firmly until you hear or feel a click. The fob should be solid and not rattle. Test the buttons to make sure the fob works.
What to do if the fob still does not work after replacing the battery
If you have replaced the battery and the fob still does not respond, the battery may be installed backward or not making good contact. Open the fob again and check that the positive side is facing up (or in the correct direction). Make sure the battery is sitting flat in its slot and not tilted.
If the battery is oriented correctly and seated properly, the problem may be with the fob itself rather than the battery. The circuit board inside could be damaged, the buttons might be worn out, or the contacts might be corroded. In this case, your Nissan dealer can replace the entire fob, which usually costs $100 to $200 depending on the model. Some dealers offer refurbished fobs at a lower price.
Cost comparison: DIY battery replacement versus dealer service
| Option | Cost | Time | When to choose it |
|---|---|---|---|
| Replace battery yourself | $2–$8 for battery | 5 minutes | You are comfortable opening the fob and have a coin or screwdriver on hand |
| Nissan dealer battery replacement | $50–$100 | 30 minutes to 1 hour (may require appointment) | You are unsure which battery type your fob uses or prefer professional service |
| Nissan dealer new fob | $100–$200 | 1–2 hours (may require appointment and programming) | The fob does not work after battery replacement or the case is damaged |
Frequently Asked Questions
Can I use any CR2032 battery, or does it have to be a specific brand?
Any CR2032 battery will work. Brand does not matter — Duracell, Energizer, store brands, and generic batteries all perform the same. Buy whichever is cheapest or most convenient. Battery quality varies slightly, but for a key fob the difference is negligible.
What if I lose a small part when I open the fob?
The fob contains very few small parts — usually just the battery, a circuit board, and the plastic case. If you lose the battery, you can buy another. If you lose a button or internal clip, the fob may not work properly. To avoid this, open the fob over a table or towel so small parts do not roll away, and keep both halves in sight while you work.
How often do I need to replace the battery?
Most key fob batteries last two to four years with normal use. If you use the fob frequently, the battery may drain faster. You will know it is time to replace it when the fob stops responding from your usual distance, or you have to press the button multiple times to get a response.
Will replacing the battery erase my fob's programming?
No. The battery powers the fob but does not store the programming. Replacing the battery will not erase or change any settings. Your fob will work exactly as it did before, as long as the new battery is installed correctly.
What should I do with the old battery?
Most communities have battery recycling programs. You can drop old batteries at many retailers (Best Buy, Home Depot, Lowe's) or at your local waste management facility. Do not throw batteries in the trash — they contain materials that should be recycled.