You can replace a Nissan key fob battery yourself in under five minutes
Most Nissan key fobs use a coin-cell battery — usually CR2032 or CR2025 — that you can buy at any drugstore, supermarket, or hardware store for two to five dollars. The fob itself opens with a flat tool like a coin or screwdriver, the old battery slides out, and the new one slides in. You do not need to reprogram the fob afterward. The whole job takes longer to find the right battery than to install it.
The exact battery type depends on your Nissan model year and fob design. A CR2032 works in most recent Nissan fobs, but some older models use CR2025 or even CR1616. The easiest way to know which one you need is to open the fob first and look at the number printed on the battery itself, or check your owner's manual. If you buy the wrong size, you can return it — they are inexpensive enough that most stores do not charge a restocking fee.
Key Takeaways
- Nissan key fob batteries cost two to five dollars and are sold at drugstores, supermarkets, and hardware stores under names like CR2032 or CR2025.
- You open the fob by inserting a coin or flat screwdriver into the seam and twisting gently until the two halves separate.
- The battery slides out of a small metal holder and the new one slides in with the positive side facing up, matching the way the old one sat.
- You do not need to reprogram the fob after replacing the battery — it will work when ready once you close the case.
- If your fob does not work after replacement, the battery may be installed upside down or the contacts may need cleaning with a dry cloth.
What battery type your Nissan fob uses
The battery number is printed directly on the old battery once you open the fob. CR2032 is the most common in Nissan fobs made in the last ten years. CR2025 appears in some older models and some compact fobs. CR1616 is less common but does appear in a few Nissan designs. If you cannot open the fob or the number is worn off, your owner's manual will list the correct battery under "key fob" or "remote control."
You can also call a Nissan dealership parts department with your vehicle's year and model, and they will tell you the battery type in seconds. This is free information and takes one phone call. If you are already at a store buying the fob, the staff at the electronics or pharmacy counter can often look up the type for you using the model year.
How to open the key fob safely
Look for a small seam running around the edge of the fob where the two plastic halves meet. Insert a coin — a penny or dime works well — or a flat-head screwdriver into that seam. Twist gently. The two halves will separate after a quarter turn or less. Do not force it; if it does not move, you may be in the wrong seam or using too much pressure.
Once the fob is open, you will see the battery sitting in a small metal holder or clip. The holder usually has a lip or edge that keeps the battery in place. Do not lose any small springs or metal contacts that may fall out — they are usually glued down, but it is worth checking before you set the fob on a table.
Removing the old battery and installing the new one
Slide the old battery out of its holder. It should come out easily; if it does not, you may need to lift a small metal tab or spring first. Look at which side of the battery was facing up — this matters. The positive side (marked with a + sign) should face up in the holder.
Slide the new battery into the holder with the positive side facing the same direction as the old one faced. It should sit flat and flush with the holder. If it feels loose or sits at an angle, remove it and check that you have the right size battery. A battery that is too small will rattle; a battery that is too large will not fit.
Closing the fob and testing it
Line up the two halves of the fob so the seams match. Press them together firmly until you hear or feel a click. The fob should be solid with no gaps. Test it when ready by pressing each button — lock, unlock, and panic if your fob has one — while standing near your car. The car should respond within a few feet.
If the buttons do not work, open the fob again and check that the battery is sitting flat in the holder with the positive side up. If it is, remove the battery and wipe the metal contacts inside the holder with a dry cloth or paper towel. Dust or corrosion on the contacts can prevent the battery from making a good electrical connection. Reinstall the battery and test again.
Where to buy the right battery
CR2032 and CR2025 batteries are stocked at drugstores (CVS, Walgreens), supermarkets (most have a pharmacy or electronics section), hardware stores (Home Depot, Lowe's, Ace), and dollar stores. They are usually in the pharmacy section near hearing aid batteries, or in an electronics aisle. A single battery costs two to five dollars; multipacks cost less per battery if you want spares.
You can also order online from Amazon, eBay, or the manufacturer websites (Energizer, Duracell, Panasonic). Online orders take one to three days to arrive, so this option works best if you are not in a hurry. If you buy the wrong size, most retailers accept returns without a receipt as long as the battery is unopened.
What to do if the fob still does not work
If the fob does not respond after you have installed a fresh battery with the positive side up, the problem is usually one of three things: the battery is the wrong type, the contacts are dirty, or the fob itself is damaged. Start by removing the battery again and wiping the metal contacts with a dry cloth. Reinstall the battery and test.
If that does not work, open the fob again and look at the battery number printed on the new battery. Compare it to the number on the old battery or your owner's manual. If they do not match, you have the wrong size. If they do match and the fob still does not work, the circuit board inside the fob may be damaged, and you will need a replacement fob from a Nissan dealership or a third-party supplier.
Frequently Asked Questions
Can I use a different battery type if I cannot find the exact one?
No. CR2032, CR2025, and CR1616 are different sizes and will not fit properly or make good contact. Using the wrong size risks damaging the holder or leaving the battery loose enough to rattle or lose power. Buy the correct type — it is inexpensive and widely available.
Do I need to reprogram my key fob after changing the battery?
No. Nissan key fobs do not require reprogramming after a battery change. The fob will work when ready once you close the case and the battery makes contact. If it does not work, the problem is the battery installation or the battery itself, not a programming issue.
How long does a key fob battery last?
Most CR2032 and CR2025 batteries last three to four years in a key fob, depending on how often you use it. Heavy use — pressing the buttons many times a day — will shorten the life. You will notice the range getting shorter before the battery dies completely; if you have to stand closer to your car for the fob to work, the battery is wearing out.
What if I lose a small spring or contact when I open the fob?
Small springs and metal contacts are usually glued to the inside of the fob case and should not fall out. If one does, it will be obvious — the fob will not work at all. Take a photo of the open fob before you remove the battery so you can see where everything goes. If you lose a part, a Nissan dealership can order a replacement fob or repair the damaged one.
Can I clean the battery contacts myself?
Yes. Use a dry cloth, paper towel, or pencil eraser to gently wipe the metal contacts inside the fob holder. Do not use water, rubbing alcohol, or any liquid — moisture can damage the circuit board. If the contacts are heavily corroded (green or white buildup), a pencil eraser works better than a cloth.