Why Is My Nissan Key Not Working?

Even if the battery in your Nissan fob is still good, there may be times when the car doesn’t recognize it. The battery is usually either dead or low, but your Nissan’s remote key functions could not be working properly. Reach out to our service department and we’ll be pleased to help if changing the battery doesn’t work.

Nissan Key Fob Does Not Function Following Battery Change

A key fob is a little remote control that fits in your hand and is used to lock and unlock the doors, trunk, and sunroof of your car. Keyless entry systems, which enable the driver to enter and start the car without ever touching the key fob, are standard on many new automobiles.

These systems talk to the car’s computer system via a tiny transmitter that is housed inside the key fob. So why, following a battery swap, does my Nissan key fob not function?

When a key fob stops working after a battery change, the most frequent cause is that it has to be reset. Other reasons could have resulted from changing the battery, such as broken connections and button misalignment.


Imagine that after replacing the Nissan key fob’s battery, it abruptly ceased functioning.

This is because your key needs to be reset and reprogrammed to function with the car. Although this is the most typical cause, other possibilities include broken key fobs and problems with your car.

You can perform the programming yourself onboard older models of vehicles. To get this done, however, you might need to go to your locksmith or the dealership if the vehicle is keyless.

You can quickly and easily replace the battery in your key fob at home if it recently died and you need to.

It is that simple, but if you seek professional assistance, the cost to replace it could reach $50.

Understanding your key fob is simple, and by handling it yourself rather than having a professional do it, you can save hundreds of dollars.

Battery for a key fob

Failure of the battery is one of the frequent reasons why a key fob stops functioning. There is no way to utilize it with a weak battery. Verify that the battery is the only issue. Change the outdated battery with a fresh one. Make absolutely certain that the battery in question is the one you have. To be certain, look up its specs in the owner’s manual.

Unstable buttons

Another possibility is that the buttons themselves are the problem. Most remote controls include rubberized buttons, which can become loose or worn out over time. A

If you see that one or more of the buttons won’t pop out properly or are stuck, take apart the casing, take the buttons out, clean them, and then reassemble the remote. You might need to purchase a new remote fob if this still doesn’t work.

Key Learnings Your remote key fob experiences a lot of wear and tear, which may eventually loosen or break some of the internal contacts, leading to a possible malfunction even after the battery has been changed.


After changing the batteries in a key, there is typically no need for any re-programming. Just make sure you have a high-quality battery that is the right type and is oriented correctly. The type of battery (CR2032) and battery orientation (which side goes on top/bottom) are also marked within the key after it is opened.

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How can my Nissan key be reset?

Reprogramming Nissan Intelligent Key Fob The doors must be secured with locks. Do not turn the car on after inserting the key. Take the key out and carry out this action around six more times. Keep in mind that success might not come for up to ten attempts.

What should I do if the battery in my Nissan key is low?

You can resume using the key fob to start and enter your car once the battery in your Nissan smart key is replaced. The steps to follow to change the battery in your key fob are as follows:

  • When the battery died, you could still enter your Nissan by using the concealed key.
  • Remove the old battery and the key casing.
  • Place the negative side of the CR2025 battery upward before replacing it.
  • Reassemble the key fob and give it a try!

How can a Nissan be started with a dead key?

  • In order to release the little release latch, flip the key fob over.
  • From the key fob’s base, remove the concealed emergency key.
  • To enter your Nissan, put the key in the driver’s side door and unlock it.

Why won’t my car start when I turn the key?

The most frequent cause of a keyless entry system failing to send signals is a faulty battery in the key fob. Use the extra key fob to unlock the car and turn on the ignition if one is available.

Use the key that is included in the spare fob if it is not available to unlock the door. Check your owner’s manual for information on how to start your automobile when the key fob malfunctions.

Why won’t a new key work to start my car?

Finally, there is a chance that your car’s security system is broken. Modern automobile security systems are more sophisticated than a basic car alarm.

If your vehicle needs to link with a chip in a transponder key in order to start, a security issue could be to blame. Your car won’t start if you just acquired a new key that wasn’t properly programmed. Your vehicle might be unable to read the data on the key if the chip inside it if damaged in any way, which would prevent it from starting. Or perhaps the key-reading system is simply out of date and inefficient.

Have your vehicle hauled to Walnut Creek Import Service & Sales right away if it won’t start. Your vehicle won’t start for a reason that our qualified experts will identify and correct.

How can I start my Nissan Sentra key manually?

Put the key fob in the port if your Nissan car, truck, or SUV has one, then push the START/STOP button while tapping the clutch or brake pedal. Simply step on the brake or clutch while pressing the key fob against the START/STOP button if your Nissan doesn’t have a port.

Why would a key quit functioning all of a sudden?

Over time, dust, dirt, hair, and other particles can enter the keyboard and impede a key’s motion or mess with its circuitry. Clean the area under and around the key that isn’t working before attempting to remove it. How to take a keyboard’s keys out. cleaning the computer keyboard

Can a mechanical key start a Nissan?

Nearly all Nissan key fobs contain a mechanical car key concealed inside in case your batteries run out thanks to Nissan’s Remote Start Key. A small catch exists. You can get to the mechanical key by opening the bottom of the fob. The mechanical key will enable you to open your car and let you get inside.

Your keyfob is not required to start your automobile because the ignition button is built to function even if the keyfob breaks. Many automakers have even included a manual start option to the ignition button. Numerous cars, including Mazda and Ford models, have a key slot below the steering wheel. The fob can be inserted to start the engine.

If you don’t have a manual ignition key, push the button while pressing the fob against it. This backup strategy is used by several automakers to guarantee that your car will still operate if your keyfob malfunctions.

The Intelligent Key Remote Technology from Nissan is a ground-breaking development in the vehicle sector. To replace your Nissan key fob, you do not need to go for your local Nissan dealer, though.

How is a Nissan key programmed for a chip?

If your Nissan has a standard transponder key fob, follow these instructions to program it:

  • Use the key fob to start the car. Lock each door after closing it.
  • Turn the ignition key just a little bit to the ACC position after inserting it. Please refrain from starting the vehicle. After that, switch it off and remove the key from the ignition. Make sure you do this at least six times. Remember that you have 10 seconds to complete this. The emergency lights will flash twice as soon as the automobile accepts the key.
  • Put the key back in the ignition quickly and switch to ACC. On the fob, press and then release any button. The hazard lights will flash once more when the Nissan accepts the new remote. To set it, manually lock and unlock the passenger door.
  • As many keys as you require can be programmed using this method. Press any button on the following key fob to program it if you have any extras in the car.
  • When you’re done programming, put the key in the “Off” position and remove it from the ignition.

Why won’t the key or remote work to open my car?

It can be quite aggravating and even hazardous if your key fob won’t open the door to your car, especially if you have a young child or pet locked inside. Here are a few explanations for why your smart or remote key fob isn’t opening the door, along with solutions.

Any of the following could be the source of your issue if nothing happens when you push the unlock button on your remote control or key fob:

Your remote control or smart key fob’s battery is either dead or too low to maintain a strong signal. Replace the battery by opening the fob.

Your vehicle’s receiver(s) for the keyless entry system may not be receiving the signal from the key fob. When pressing the unlock button, try holding the fob close to the door handle. If it opens the door, there might be an issue with the key fob’s battery, the keyless entry antenna, or the wiring.

The unlock button on the key fob itself can be problematic. Try the panic, trunk release, and lock buttons. If the other buttons function properly, a faulty unlock button is the issue. You’ll require a fresh key fob (which will have to be programmed to your vehicle). The fob may be damaged, the keyless entry antenna, or the wiring may be at fault if none of the other buttons function after you have tried a new battery in the fob.

Your key fob’s entry code is missing. Every time you use the key fob to unlock or start your car, the rolling code that many automobiles employ changes. It can be necessary to have the fob reprogrammed by a car dealer if a communication error has corrupted the coding inside.

The electric door locks might be broken. The power door locks could not be able to unlock due to a problem with the wiring or control circuitry or even a blown fuse. To find the defect, the electrical system will need to be further diagnosed.

Your car’s battery is nearly dead or very low. Before the power doors may unlock, the car battery may need to be changed or given a jump start. Of course, you won’t be able to open the hood until you find another way to enter the car.

How is a Nissan key fob push-button start reprogrammed?

Any button on your keychain fob should be pressed and held until the door locks start to flash. It ought to take three seconds or so. Release your programming button as soon as the lock lights stop flashing. A continuous light that indicates that the key fob has been programmed should then appear.