How do i change battery in my key fob

There are several reasons your key fob may not work correctly. Some of the most common problems involve the battery contact terminals or the buttons themselves—but it may also be that you simply need to reprogram the key fob so that it’s recognized by the vehicle.

For your remote key fob to work properly, it has to be connected to a receiver in the vehicle. When the battery in the fob is replaced, it can sometimes interfere with the paired connection between key and car, in which case you’ll need to reset it.

Not being able to use your remote key fob can be a nuisance—that’s why licensed

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Jerry

has put together this guide on what to do when your key fob isn’t working even after replacing the battery.

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How do i change battery in my key fob

FAQ

What type of batteries does my key fob need?

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As a general rule of thumb, most remote key fobs use category 4 button cell batteries (the thin, coin-like ones), usually either CR2025 or CR2032, though some models require CR1632 or CR1620. 

Always verify which batteries you need before buying—it’s a good idea to bring one of the old batteries with you to the store to ensure you get the right kind.

How do i change battery in my key fob

Andrew Biro

Andrew Biro is an insurance writer with a BA in Cultural Anthropology from the University of North Carolina Greensboro. When not writing about cars, they can be found working on short stories, reading, illustrating, hiking, or practicing photography. Their dream car is a Black 1938 Rolls-Royce Wraith.

You press the unlock button on your key fob. Nothing happens. You get a bit closer to your vehicle and try again. Still nothing. It has a dead battery. What a pain! No worries. It’s a simple fix that only takes a minute or two.

Here’s how to change a dead battery on your Nissan key fob. Keep reading for our step-by-step guide.


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Changing Nissan Key Fob Battery

How do i change battery in my key fob

While changing out your Nissan model’s key fob battery is a straightforward process, it does involve touching sensitive and fragile electronics. To avoid damage to the key fob, make sure to wear a pair of gloves (latex or non-latex substitute). The Nissan key fob uses a CR2032 3V battery. You can usually get a multipack of these for under $5 USD. You’ll also need a small flathead screwdriver.

  • Flip Nissan key fob to back side
  • Move small slider to unlock emergency key
  • Remove emergency key
  • On the top of the key fob, locate open notch between front and back halves of fob
  • Insert flathead screwdriver into notch
  • Turn screwdriver until front and back fob halves separate
  • In the back fob half, locate the dead CR2032 3V battery
  • With the flathead screwdriver, pop out dead battery
  • Insert new CR2032 3V battery + side down
  • Click new battery into place
  • Line up front and back fob halves
  • Squeeze them back together until everything clicks into place
  • Replace emergency key into its slot
  • Move slider back into place to secure emergency key


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Want It Done Professionally?

Not really comfortable with doing this yourself? That’s totally fine! Our Service team at Palm Springs Nissan will be glad to help. Simply schedule an appointment and we’ll get you in as soon as possible. And don’t forget to check our service specials beforehand to make sure you’re getting the lowest price possible.

Can I change the battery in my key fob myself?

Yes, you can. DIY is quick, simple, and cheap. To do this, pry apart the key fob and replace the coin battery inside with a new one.

Do I have to reprogram my key fob if I change the battery?

Typically, you do not need to reprogram the key fob after changing the battery. However, if you've replaced not just the batteries but also some of the internal wiring and electronics, you may need to reprogram it by pairing it with your vehicle once again.

What happens when your key fob battery is low?

As the fob battery becomes weaker, the transmitter loses its range. This means that you have to be closer to the car for the fob to work. In cars with a push-button start, a vehicle may not always recognize a smart key fob in your pocket or purse if the fob battery is weak.