Car security is a very important thing in today’s world. To make your car more secure all the car manufacturing companies have taken necessary steps. A key fob is one of those security measures which work great for the owner. But changing the battery of the car fob is not very hard.

Nissan Car Key Battery Replacement

All the car fobs work on battery as they work as a remote controller of the car lock system. You can lock and unlock your car from a manageable distance and thus you need a high power battery for the key fob. But as we all know, the power supply capacity of the battery comes down gradually and you need to replace the battery after a certain time. So when you find your car fob is not working properly from the said distance, you should understand that it’s the time to change the battery. You can easily take your car to the service center and change the battery of the car fob. But if you want it to change at your home then you need to follow some steps mentioned here.

  • To change the battery of the car fob, you need to open it first. Now the question where is the point from which you can open the fob? Well, it is located at the back of the key fob where you attach the key ring. There will be a switch, sliding which will result in the removal of the metal key from it.
  • Now open the fob. You will find a small opening at the very place where from the spare key you have removed. Take the flat head screwdriver to open the key fob into two halves so that you can remove the battery.
  • Remove the battery from its slot and do it carefully so that you don’t damage the rubber ring underneath the battery into the slot.
  • Now put the new battery you have bought. Remember to keep the ‘+’ sign of the battery facing downwards. You can buy a 3V battery for the best result out of the key fob, but you can also use a CR2025 battery.
  • Now close the two halves of the key fob and join them with the screwdriver. Before you close the key fob finally, remember to place the spare key at its place.
  • After you completed the operation, now it’s time to check out whether it is working properly or not. If you find it difficult to open the fob or close it properly, then you can visit the showroom always for assistance.

Nissan Qashqai Key Fob Battery

It is easy to change the battery of Nissan’s proximity key. But if you don’t know it, then it’s your turn now to learn how to accomplish the job. For the replacement of the battery, pull the slot you get on the back of the fob. Slide it to the left to remove the key for emergency use. Now put the small screwdriver you have into the tool kit and remove the lid from the place of the battery. Put the new battery inside and close the lid finally. If you think whether you need to reprogram the key fob again or not, then you should know that no reprogramming is required for it.

2017 Nissan Altima Key Fob Battery

Nissan Altima is an AWD sedan car with extraordinary features. It is a very fuel-efficient car that gives you good mileage while you drive it on the road. The most valuable feature of this car is the All-wheel Drive system which gives it an extra competitive edge in the race of market share. It makes the drive smoother as well as a very comfortable one. To change the battery of the key fob of this car you should follow the instructions properly.

  • First of all, go through the user manual properly. There you will get the proper instructions for the removal and change of dead battery.
  • Now take the key fob into your hand and turn it. You will get a small sliding slot behind the key. Push it towards the left and you will be able to remove the spare key from it.
  • Now you will have to take out the flat head screwdriver and put it into the slot right beside the place where the key was in.
  • Put pressure on the slot by the screwdriver and the fob will open into two halves. Now put the battery out of its slot carefully. Stay attentive that you would not touch the battery without washing your hands properly.
  • Put the new battery inside the intelligent key slot with the positive (+) side down.
  • Align all the ends of the fob and push it to close it properly. Have a trial run with the new battery so check whether there is any kind of discrepancy in the operation of the key fob.

2017 Nissan Sentra Key Fob Battery

Follow all the steps that we mentioned previously to change the battery of the other cars in this article. The only thing you should know about this is the battery should be a CR2032 battery for the best result.

Nissan Key Fob Not Working after Battery Change

After all your efforts to change the Nissan key fob’s battery, you might find it not working. But it’s not the matter to worry. Your key fob might need a reprogramming due to the change of battery. Here we are mentioning the steps for the same.

  • Get into your car and sit on the driver’s seat. Now close the door and lock them properly. Insert the key you have and turn it to ignition. Turn it to ACC and then turn it off. Now remove the key from the ignition.
  • It requires repetition in rapid succession for six times to get the best result out of the process. To be sure about the success of each repetition the emergency light will flash twice for each successive repetition.
  • Now put the key again to ignition and turn the ACC on. Now push and release any of the buttons of the remote so that the hazard light will flash and acknowledge the new remote.
  • Unlock the driver’s door and lock it again. Now press any of the buttons to program different transmitters at a time. Turn off the ignition and remove the key when the process is complete.

What Kind of Battery does a Nissan Key Fob Take?

Most of the people use the CR2032 battery for the Nissan key fobs as this gives them the best results. Other than this, some people use 3V batteries also to get the Nissan key fobs working.

Do You have to Reprogram a Key Fob after Changing the Battery?

Mostly you don’t have to reprogram the key fob after you change the battery. But in case you need to do it, you will get all the instructions from the user manual in printed form.

How do You Open a Nissan Key Fob?

Turn the back of the key fob on and slide the slot you are having right in front. Now push it to remove the spare key out of the key fob. After you take the spare key out of the slot, you will find another small slot right beside the key slot. Put the flat head of the screwdriver into it and put pressure to open the key fob into two halves.


  • You can open the key fobs yourself at your home.
  • Use a 3V battery or a CR2032 battery for the best service.
  • Don’t touch any of the parts of the key fob with dirty hands.

What kind of battery does a Nissan key fob take?

Nissan Key Fob Battery Change

Remove the key housing as well as the old battery. Replace the CR2025 battery with the negative side facing up. Put the key fob back together and test it out!

Do you have to reprogram a key fob after changing the battery?

The key fob will need to be reprogrammed to the vehicle as when the battery was replaced in the key fob, the key was reset. This is why nothing is working with the key fob. After replacing the battery in the key fob remote, you will need to reprogram the remote to the vehicle.

What do I do if my Nissan key battery dies?

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Can I start my Nissan without a key fob?

Getting into Your Nissan

Since your key fob not only starts your vehicle but also opens it, you’ll still be able to get inside your vehicle even if your key fob battery is dead. First, flip the key fob over, then push the small release latch.

What happens if key battery dies?

Automakers know that your keyless ignition may need to work if the fob dies, and the system has been designed to work even with a non-functioning remote. Some cars are equipped with a means of starting the car manually, and some have a backup built into the key fob that work without a key.

How long does low key battery last?

It will take around three to four years for a key fob battery to be replaced. There can be a lot of stress and frustration if you don’t have a fully functional key fob. It will be difficult for a person to get into their car if they don’t have a working key.

Can low battery in key fob cause car not to start?

If nothing happens, it may mean one of several things: The battery inside your key fob is dead or too low to send a good signal to the keyless entry system and needs to be replaced. Your car battery is extremely low or dead. This may require a jump start before your engine will crank and start.

How do you know if your key fob needs a new battery?

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What do I do if my keyless remote battery is low?

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What does it mean when it says key battery low?

What the key fob battery low warning light means. When the key is in use, the computer monitors the output voltage of the fob’s battery. Once the voltage gets to a certain point, the warning light will illuminate on the dash to let you know to replace the batteries. Make sure that you use the correct type of battery.

How often should key fob batteries be replaced?

Key fob batteries should be replaced every three or four years, although this will vary based on their amount of use and build quality. If your key fob were to suddenly stop working when you’re far from home, you’d wish you had cared for it.

Does AutoZone replace key fob batteries?

No matter which type you need, you can find a new key fob battery for your car at your local AutoZone.

Do dealerships replace key fob batteries?

Key fob battery replacement is generally easy. Also, dealers usually charge very little to change a battery. Some dealers we surveyed indicated they will change batteries as a courtesy when bought at the dealer. Even if your key fob battery is dead, you can still start your car.

Why does my key fob not work after replacing battery?

The most common problem with these car key fobs is that the batteries just go dead over time, in which case replacing the battery should fix the problem. Take the key fob apart and check for broken contacts or misaligned buttons. Reprogram your remote yourself or have a professional do it.

How do you program a key fob after replacing the battery?

How to reprogram a key fob
  1. Replace the batteries inside the key fobs.
  2. Get inside the car.
  3. Turn on the ignition.
  4. Press the lock button on the remote key.
  5. Listen for a Lock Sound.
  6. Programming additional remotes.
  7. Turn off the ignition.
  8. Step out from your car and test the result.

What do I do if my key fob is not detected?

If your car doesn’t detect the key fob, the easiest solution is to use the physical backup key instead. Some cars can use either method to unlock the doors and start the engine.

How do I reprogram my key fob?

How to Program a Key Fob in 5 Simple Steps (Car Key Guide)
  1. STEP 1-Turn on the ignition. You should sit in the driver’s seat with both the ignition key and the key fob with all doors closed.
  2. STEP 2-Press the lock button.
  3. STEP 3-Turn off the ignition.
  4. STEP 4-Repeat the process with other key fobs.
  5. STEP 5-Restart the process.

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