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How to Replace a Honda Key Fob Battery and Reassemble It If It Falls Apart

Updated: Jul 23, 2021

Replacing a Honda key fob battery is an easy task almost anyone can handle. Below are quick easy steps to replace it yourself. Also feel free to just bring it down to your local Honda dealer and they would be more than happy to replace it for you.

Choosing the Correct Battery

A Honda key fob battery can be purchased almost anywhere, although it is recommended to purchase a genuine Honda part. If you can't make it to your local Honda parts center, you can always call to find out the battery size and voltage. For most vehicle key fobs, it is a 3-volt battery (the circular flat silver ones). From there you can go out to most hardware stores and purchase the battery you need.

How to Replace a Honda Key Fob Battery

1. Locate and slide the button that releases the metal key inside the fob, and slide the key out of the key Fob.

2. Wedge the edge of the key between the slot at the top of the key fob. Twist the key to use it as leverage and the back of the key fob should pop off. You can also use a flathead screwdriver for a bit more precision.

3. So the pieces inside the battery don't fall out: hold the key fob together by pressing your thumb down right above where the battery is located.

4. Using your other hand, remove the battery and place the new one in.

5. Line the back of the key fob up with the front and press it back together. You will hear it snap back into place.

How to Reassemble the Honda Key Fob If It Falls Apart

If the battery is pried out of the key fob without carefully holding it together, there is a good chance the contents of the key fob--including the external buttons, will fall out. Here is how to reassemble the whole key fob if this happens to you.

• Grab your spare key fob to use as a reference of what the reassembled fob should look like.

• Line all of the buttons up next to the key fob faceplate just as they would be placed back into the key fob.

• Flip the faceplate over and place the buttons back into the correct slots.

• Insert the crossbar between the empty spaces of the top two buttons, with the crossbar curvature facing outwards.

• Insert the battery back into the motherboard with the positive sign facing out.

• Put the motherboard back into the key fob with the rubber film up against the buttons.

• Line the back of the key fob up with the front and press it back together. You will hear it snap back into place.

• Near your vehicle, press all the buttons to test that everything is working properly.

Watch the video below to get a better idea of how to replace the battery and reassemble the key fob if it falls apart.

In search of a new Honda or need your current Honda serviced?


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6 commenti

02 apr 2023

what kind of moron engineer designed this stupid key fob?

Well...after you get out of the insane asylum, if you get painter's tape and put it over the front where the buttons are exposed, it will help hold them in place when yo go to reassemble the explosion. Also, for the even newer and more updates fobs that have a truck opening button, I found it easier to lay the lock and unlock buttons in the shell and then put the cross member doohickey in with the curves facing out (those three are exposed and for the definition of the fob).

You may (and probably should) put painter's tape on the buttons before you try opening the fob.

I hope…

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Svetlana Brodsky
Svetlana Brodsky
06 nov 2022

perfect job, thank you

Mi piace

john hofflinger
john hofflinger
10 ott 2022

Had to watch this very good film four times finally got it. 87 years old it was hard.

thank you very bery much

Mi piace

19 giu 2022

An emergency locksmith can replace key fobs for you, contact any auto locksmith to get your key fobs replaced.

Mi piace

28 nov 2021

Dealership is the best option but for reasonable key replacement, you can visit locksmith store for sure.

Mi piace
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