How To Change Battery In A 2015 Nissan Altima Key Fob?

Most of us love convenience, and auto fobs are undoubtedly one of the best. You push a button, and the car door will open even at a distance from the car. However, conveniences, including key fobs, can fail, and a flat battery is the most prevalent cause of failure. This article aims to teach you how to change the battery of a 2015 Nissan Altima Key Fob.

Signs you need to change your 2015 Nissan Altima Key Fob battery

The key fob battery technically lasts up to 3 years, depending on its use. Some apparent signs may point to a dead battery in a key fob; here are some of them:

  • The car does not respond when the key fob is pressed
  • The range the fob transmits reduces
How To Change Battery In A 2015 Nissan Altima Key Fob?

The kind of battery the 2015 Nissan Altima Key Fob uses

Your vehicle’s model determines the type of battery you’ll need. Usually, one of two batteries will be used: the CR2025 or the CR2032. It is worth noting that you can swap the CR2025 with the CR2032. However, it may not be possible to swap the CR2032 with CR2025 as it is thicker.

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  • IN THE BOX: 4-pack of CR2025 3-volt lithium coin cell replacement batteries for small electronic devices
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  • LONG LASTING: Long-lasting, reliable battery life; performs in extreme temperatures
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  • SINGLE USE: These batteries are NOT rechargeable; for rechargeable options, check out Amazon Basics rechargeable batteries

Steps to replace a 2015 Nissan Altima Key Fob battery

Follow the procedure to correctly change the key fob battery on a 2015 Nissan Altima:

  • Place the key fob with the keys facing down on a table.
  • Remove the metal ignition key, and a little slider tab should appear. To release the metal ignition key, push the tab toward the key fob’s outer edge. The key should slide out if you pull the bottom edge of the key fob downward. Please note where you’ll put the emergency key, so you don’t lose it!
  • Pull apart the fob by looking into the area where the emergency key used to be with the key fob keys facing up. There should be two notches on the plastic bottom edge of the fob. Insert your flathead screwdriver carefully into one of the notches and pry the two pieces of the fob apart. If it persists, move on to the next notch. The top portion of the fob should be removed.
  • You should be able to view the battery after removing the top part. With your screwdriver, carefully pry it out, careful not to scratch the components. Place the new battery in the slot with the positive side up.
  • Reassemble the key fob by aligning the front half and back cover of the key fob and carefully pushing them together, ensuring they’re flush on all edges. Re-insert the metal ignition key into the slot until it snaps into place.

It is worth noting that Operating your key fob on a non-conductive object, like a hardwood worktop, is recommended. Static created on a metallic plastic surface has the potential to harm your key fob.

How to Program a 2015 Nissan Altima Key Fob

It’s simple to learn how to program a Nissan Key fob, and the whole process takes only a few minutes. The following are the steps to take:

  • To begin, get inside the car with the doors locked.
  • Insert the key into the ignition but don’t start the car. Remove the key from the ignition. Repeat until the warning lights flash twice, signaling that your vehicle has entered program mode.
  • Put the key back in the starter and turn it to the on position. It will turn on the car’s electronics but not the car.
  • Quickly press any of the Nissan Key’s fob buttons.
  • Exit the vehicle and try the key fob. Flashing light or the car horn’s beeping means you have successfully programmed the key fob. If not, try the steps again.

Reasons a 2015 Nissan Altima Key Fob may not work.

A new battery does not guarantee the key fob will work. Some of the reasons a key fob will not work even with a new battery include:

  • Incorrect battery location: Make sure the battery is in the correct order. There are two sides to this battery, one positive (+) and one negative (-), and you may have installed it incorrectly.
  • The new battery is dead: Check the battery voltage using a multimeter to ensure it is at least 3 volts. If not, try swapping out the batteries.
  • Dirty terminals: Over time, the steel terminals might corrode, resulting in a weak connection with the battery. Replace the battery and clean the terminals.
  • Problem with the key fob: the circuit board that links the button may be loose, indicating an internal problem. Another concern is that the key fob’s programming has become damaged. Ask for professional help in this case.


By following the steps above, it is pretty easy to change the battery and program the key fob of the 2015 Nissan Altima. The user handbook should specify the type of battery you require. If you don’t have one, you can check by removing the rear panel from your key fob and checking the model of the battery inside. You can also have the battery changed professionally by going to an auto shop.

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