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Genie Key Fob Battery Replacement Guide
How to change a weak or dead battery in the G3T-R mini key fob remote control for a Genie garage door opener.

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Genie G3T-R Key Fob
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Back Side of Remote
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Notch On Top Edge
This home maintenance tutorial was specifically written to assist owners of the Genie G3T-R mini key fob remote control for a Genie garage door opener in changing a weak or dead battery.

Owners of other similar Genie remote control units such as the GM3T-BX, 38501R, G1T-BX or GITR-3 may also find these DIY instructions to be helpful.

The compatible replacement coin cell (also known as a "watch" or "button") battery is part number CR2032 which is available from various manufacturers such as Energizer, Panasonic, Duracell, Sony or Maxell.

The only tool needed to access and replace the battery is a small flathead screwdriver or something similar such as a coin, butter knife or nail file.



 

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Insert Flathead Screwdriver
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Back Cover Removed
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Push Out Old Battery
The first step is to separate the Genie fob from key ring and your other keys.

Then locate the small notch on the top edge of the fob.

Insert the flathead screwdriver into the notch.

Gently pry apart the two halves of the fob.

Lift off the rear cover and set it aside in a safe place.

Use the screwdriver or your finger nail to carefully push the old battery out of the socket.

Move the battery from the middle of the fob towards the outer edge.

Try to avoid scratching, gouging or damaging the green circuit board or the metal electrical contacts.

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Old Battery Removed
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Energizer CR 2032 3V
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Slide In New Battery
The OEM original battery in this G3T-R fob was a Energizer CR2032.

Orientate the new CR2032 battery with the positive "+" side facing up towards you and the negative "-" side facing down towards the green circuit board.

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New Battery Installed
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Line Up Rear Cover
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Snap Together Two Halves
Carefully push the new battery into the slot.

Make sure the new battery is fully seated in the holder.

Line up back cover over the front half of the fob.

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Key Fob Re-Assembled
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Red LED Light - Testing
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Green LED Light
Gently pop together the two halves of the fob.

Make sure that the front and rear of the fob are flush together at every edge.

Test the new battery by pressing the buttons on the fob.

The red LED light indicates an IntelliCode 1 button operating at 390Mhz. The green LED lights indicate the buttons operating at the newer IntelliCode 2 315Mhz frequency.

The remote should not need to be re-programmed. Replacing the battery shouldn't clear the original programming.

If you do need to re-program the fob, follow these steps: 1. Press and hold the "Program" button for a few seconds and release it. You should see the program light flashing. 2. Press the button on the fob remote control that you would like to use for operating the garage door opener. 3. Test the fob by pressing the button on the fob.

For more, check out all of my Home DIY Repair & Maintenance Guides.
 

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