How Long Does a Key Fob Battery Last [FAQ]


A car’s key fob or remote battery usually lasts between three and four years. When it starts to lose power, it may not work as well as it used to. The battery may also have to be replaced more often if the car is not used often.

Getting started

A key fob battery usually lasts between one and two years.

after replacing the batteries in your key fob it may not work if you have not reprogrammed it

How Often Should You Replace Key Fob Battery

Every three or four years, you should replace the key fob battery. If the key fob stops working when you’re far from home, you might wish you had replaced the battery sooner.

autozone provides key copying services for automotive vehicles

How Do I Know if My Key Fob Battery Is Dying

  1. The transmitter loses its range when the fob battery becomes weaker.

  2. If you notice you have to be a lot closer to your car than usual, that’s a sign that your range is decreasing.

  3. This is an indicator to change your battery.

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every three or four years you should replace the key fob battery

Can You Start a Car With a Dead Key Fob

If your key fob is dead or if the battery is low, you can usually unlock your car by using the manual key. First, locate the manual keyhole on your car. It’s usually located on the outside of your car near the door. Next, insert the key into the manual keyhole. Next, turn the key to the “lock” position. Finally, insert the key into the door handle. You’ll now be able to open the door.

find the keyhole on the car insert the mechanical key if the alarm sounds pull out the key and try again

Will My Car Stop if My Key Battery Dies

If your key fob dies while you’re driving, the car will still start. The key fob is just an unlocking and starting device, so once the car is in motion, the key fob no longer has any effect on the car.

if your key fob dies while you re driving the car will still start

Can Low Battery in Key Fob Cause Car Not to Start

If your car has a key fob, and the battery is low, the key fob may not be able to communicate with the car’s computer, and the car may not start.

if your key fob is dead or if the battery is low you can usually unlock your car by using the manual key

How Do You Start a Car With a Dead Key Battery

  • To start the car with a dead key battery, use the key fob to push the START button.

-In some vehicles, you can start the engine with a hidden key fob slot.

-If the car doesn’t have a key fob, you can try turning the key in the ignition.

-If the key doesn’t turn, try using a coat hanger to insert the key into the ignition.

-If the key still doesn’t turn, the battery may be dead. If the battery is dead, you can replace it.

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if your key fob stopped working there are a few things you can do to try and fix the problem

What to Do if Key Fob Stops Working

If your key fob stopped working, there are a few things you can do to try and fix the problem. First, check to see if the battery is dead by trying to turn the car on with the key fob and seeing if it lights up. If the battery is dead, you will need to replace the key fob battery. If the battery is not the problem, you can try to check for broken contacts or misaligned buttons on the key fob. If these are not the problem, you can have a professional try to reprogram your key fob. If the key fob still does not work, it is likely that the remote has been damaged and needs to be replaced.

some carmakers like general motors ford and toyota provide instructions in the owner s manual on how to program a replacement key fob

How Do You Unlock a Car Without a Key Fob

  • Find the keyhole on the car

-Insert the mechanical key

-If the alarm sounds, pull out the key and try again.

the transmitter loses its range when the fob battery becomes weaker

Can I Replace a Key Fob Myself

Some carmakers, like General Motors, Ford and Toyota, provide instructions in the owner’s manual on how to program a replacement key fob. If your car does not have a user manual, or if you cannot find the instructions, you can usually find information on the internet.

To program a replacement key fob, you will need to have the original key fob, a compatible replacement key fob and a Vehicle Master Key. The Vehicle Master Key is a small, plastic piece that comes with your car. If you do not have a Vehicle Master Key, you can purchase one from your carmaker or a locksmith.

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To program a replacement key fob, you will need to turn your car off and then remove the key from the ignition. Next, you will need to remove the battery cover on the car. After the battery cover is removed, you will see two screws that hold the key housing in place. Use a Phillips head screwdriver to remove the screws. Once the screws are removed, you can lift the key housing off of the car.

Next, you will need to insert the replacement key fob into the key housing. Make sure that the black button on the replacement key fob is facing down. Next, locate the Vehicle Master Key and insert it into the hole on the side of the key housing that is opposite of the black button. Finally, reattach the key housing to the car by replacing the screws that were removed in step 1.

Once the replacement key fob is programmed, you can use it to unlock your car.

to start the car with a dead key battery use the key fob to push the start button

Does Autozone Replace Key Fobs

AutoZone provides key copying services for automotive vehicles. These services include key blanks, key duplication, transponder keys, and key fobs. If you lose your key, you can get a new key copied at AutoZone. The key blanks are the original keys that have been cut down to the size of a key fob. The key duplication service will create a new key that is exactly the same as the original key, down to the make and model of the car. The transponder keys are chips that are put in the car’s key ring. They allow the car to be started by simply inserting the key fob into the car keys. The key fobs are the actual physical keys that you can take with you when you leave the car.

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How Do I Reset My Key Fob After Replacing the Battery

After replacing the batteries in your key fob, it may not work if you have not reprogrammed it. To reprogram your key fob, you will need to turn on the car, press the lock button on the remote key, then listen for a Lock Sound. Afterwards, you will need to enter a 4-digit code into the key fob. If you have additional remotes, you will need to program them as well. Finally, you will need to turn off the car and test the result.

In summary

If you’re not using your car’s key fob or remote very often, it may still be working fine. However, over time, the battery will probably lose power, and it may not work as well as it used to. If this happens, you’ll probably have to replace the battery.

Brian Doe

Meet Brian Doe, our Windows expert,who loves to spend most of his time working with the systems and experimenting on different chips. Basically, he’s a software engineer,and his writing hobby helps him share his computing tips and solutions with you to make you a Windows DIY guy.

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