Nissan key fobs use CR2032 batteries in most models
The vast majority of Nissan key fobs take a CR2032 coin cell battery. This is a 3-volt lithium battery about the size of a dime, and it is the standard power source across Nissan's lineup from recent years back through the 2000s. You can buy CR2032 batteries at any drugstore, supermarket, or hardware store for between $3 and $8 for a pack of two or four.
Some older Nissan models and a few specialty fobs may use different batteries — the CR2025 (slightly thinner) or CR2016 (smaller diameter) — but CR2032 is by far the most common. If you are unsure which battery your fob needs, check the inside of the fob itself: when you open it, the old battery will be marked with its type number printed directly on it.
Key Takeaways
- Most Nissan key fobs use CR2032 3-volt lithium coin cell batteries, which cost $3 to $8 for a multi-pack.
- You can confirm the correct battery type by opening your fob and reading the number stamped on the old battery.
- Replacing a Nissan key fob battery takes about two minutes and requires no tools other than a coin or flat object to pry the fob open.
- A fresh CR2032 battery typically lasts two to four years in normal use before the fob stops responding reliably.
How to open your Nissan key fob safely
Nissan key fobs are designed to split in half along a seam that runs around the edge. Look for a small groove or line running horizontally around the middle of the fob — that is where the two halves separate. Use a coin, a flathead screwdriver, or even a butter knife to gently pry along that seam. Start at one corner and work your way around; the halves will pop apart with light pressure.
Do not force it or pry at the top or bottom of the fob, as you may crack the plastic or damage the internal button mechanism. The seam is designed to give way, so if you are meeting heavy resistance, you are likely prying in the wrong spot. Once the fob is open, you will see the battery sitting in a small metal holder or clip.
Removing and replacing the old battery
The CR2032 battery sits in a metal clip or holder inside the fob. Note which side is facing up — the positive side (marked with a plus sign) should face outward. Gently pry the battery out of its holder using the same coin or flat object you used to open the fob, or straightforward push it up from underneath with your finger.
Once the old battery is out, insert the new CR2032 with the positive side facing the same direction as the old one was. The battery should sit flat and click into place in the holder. If it does not sit flush or feels loose, remove it and reorient it — you may have it upside down. Press down gently until you hear or feel a small click.
Closing the fob and testing the new battery
Align the two halves of the fob so the seam lines up evenly all the way around. Press them together firmly until they snap back into place. You should hear a distinct click or feel them lock together. If the halves do not sit flush or there is a visible gap, open it again and make sure the battery is seated properly — a battery that is not fully inserted can prevent the fob from closing completely.
Test the fob by standing near your Nissan and pressing each button. You should see the lights flash on the car or hear the locks respond. If nothing happens, open the fob again and check that the battery is facing the correct direction and is fully seated in its holder. If the fob still does not work after a fresh battery, the problem may be internal damage or a worn-out circuit board rather than the battery itself.
Where to buy CR2032 batteries
CR2032 batteries are sold everywhere: drugstores like CVS and Walgreens, supermarkets, Target, Walmart, Amazon, and any hardware store. You will find them in the electronics or battery aisle. Buying a multi-pack (usually two, four, or six batteries) costs less per battery than buying a single one, and having spares on hand means you will not have to make a trip if another fob dies or if you have multiple remotes in your household.
Generic and name-brand CR2032 batteries perform identically for key fob use, so there is no reason to pay extra for a premium brand. Store them in a cool, dry place — a kitchen drawer or junk drawer is fine. Avoid storing them in hot cars or damp bathrooms, as heat and moisture can shorten their lifespan.
How long a CR2032 battery lasts in a key fob
A new CR2032 battery in a Nissan key fob typically lasts between two and four years under normal use — meaning you press the buttons a handful of times per day. Heavy use (pressing buttons dozens of times daily) may shorten that to 18 months, while light use (a few button presses per week) can stretch it to five years or longer.
You will notice the battery is dying when the fob stops responding from your usual distance, or when you have to press the button multiple times to get a response. At that point, replace the battery rather than waiting for the fob to stop working entirely. A dying battery can also cause intermittent locking and unlocking, which is frustrating and can make you doubt whether your car is actually locked.
Frequently Asked Questions
Can I use a different battery type if I cannot find CR2032?
CR2025 and CR2016 are physically similar and may fit, but they have different voltage or capacity ratings and can damage your fob's circuit board or cause unreliable operation. Always use the exact battery type marked inside your fob. CR2032 is so common that you should be able to find it within a few minutes at any store that sells batteries.
What do I do if the battery is stuck and will not come out?
Do not force it — you risk damaging the metal holder. Try using a plastic spoon handle or a plastic pry tool instead of metal, which can slip and scratch the circuit board. If the battery is truly stuck, it may be corroded. Let the fob sit open for a few hours, then try again gently. If it still will not budge, the fob may need professional service.
Is it normal for the fob to stop working right after I replace the battery?
No. If a fresh battery does not work, the battery is likely installed upside down or not fully seated. Open the fob again and check the orientation — the positive side (marked with a plus) should face outward toward the button side of the fob. If it is correct and the fob still does not work, the internal circuit may be damaged.
Can I replace the battery in a Nissan smart key or push-button fob the same way?
Smart keys and push-button fobs open the same way and use the same CR2032 battery. The process is identical — pry along the seam, swap the battery, and close it back up. The only difference is that smart keys are larger and may have a slightly different internal layout, but the battery replacement itself works the same way.