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

September 11th, 2018 by

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 Albany-area Honda dealer and we 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 in Troy and Troy and purchase the battery you need.

Honda Key Fob Battery

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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 with out 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 face plate 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 cross bar between the empty spaces of the top two buttons, with the crossbar’s curvature facing outwards.
  • Insert the battery back into the mother board with the positive sign facing out.
  • Put the mother board 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.

More From Rensselaer Honda

Our friendly staff in the Rensselaer Honda Service Center offer a wealth of knowledge on all things automobile, whether you want to learn how a hybrid engine works, what to do when you get a screw in your tire, or you just want to ask them a few questions about your specific model in the Latham area. Contact us or visit us today!

Posted in Honda Information