Garmin Montana Power Button Broken? Here's the Easy Fix

Replacement of this button is an easy procedure that takes around 10 minutes. This tutorial works for all Montana models.

Quick Tip

The rear housing design is shared across multiple Montana models.

• Montana 600 / 600t / 610 / 610t use the same back cover case.
• Montana 650 / 650t / 680 / 680t also share the same back cover case.

The only major difference is that the 650 series includes a camera opening on the back housing, while the 600 series does not. Other than the camera cutout, the housing dimensions and button positions are identical.

Tools You'll Need to Replace the Garmin Montana Power Button

Before starting the repair, prepare the following tools:

• A sharp hobby knife or precision utility knife
• Super glue (502 glue or Loctite 406 is recommended)
• Replacement Garmin Montana power button
• Isopropyl alcohol and a cleaning cloth or cotton swab

One advantage of this repair is that you do not need to completely disassemble the Garmin GPS. The replacement can be completed directly from the outside, saving time and reducing the risk of damaging internal components.

Garmin Montana 600 & 650 Power Button Replacement Guide

Step 1 – Mark the Cutting Area

Although removing the rear housing is possible, it is not recommended for this repair because it adds unnecessary work and increases the chance of damaging the waterproof seal.

Instead, compare the replacement power button with the original damaged rubber button.

Use the replacement part as a reference and carefully identify the portion of the old rubber that needs to be removed. Mark the cutting area before beginning.

Accurate cutting marks will make installation much cleaner and easier.

Step 2 – Carefully Remove the Damaged Rubber

Using a sharp hobby knife, carefully cut along the reference lines.

Remove only the damaged rubber portion while keeping the surrounding housing intact.

Take extra care around the edges because this is the area most likely to slip. Cutting slowly will produce a much cleaner result and help the new button fit perfectly.

Step 3 – Apply Adhesive and Install the New Button

Once the damaged rubber has been removed, clean away any debris.

Apply a thin layer of 502 super glue or Loctite 406 around the edge of the cut opening.

Immediately position the replacement power button over the opening and press it firmly into place.

Avoid using excessive glue, as a small amount provides sufficient bonding strength while reducing cleanup later.

Allow the adhesive to cure according to the manufacturer's recommended drying time before operating the button.

Step 4 – Clean Away Excess Glue

After the new button has been installed, inspect the surrounding area.

Use isopropyl alcohol and a soft cloth or cotton swab to wipe away any excess adhesive before it fully hardens.

Cleaning the area improves both appearance and button movement.

Once everything is dry, test the button several times to confirm smooth operation.

Important Tips When Replacing the Garmin Montana Power Button

Keep the following precautions in mind:

• Always cut away from your fingers when using a hobby knife.
• Remove only the damaged rubber—avoid cutting the surrounding housing.
• Use a high-quality adhesive such as 502 or Loctite 406 for the strongest bond.
• Apply only a thin layer of glue to prevent overflow.
• Purchase a precisely molded replacement button designed specifically for the Montana series.
• Allow the adhesive to fully cure before pressing the button repeatedly.

Taking a few extra minutes during installation will greatly improve the durability of the repair.

Conclusion

Replacements of the damaged power button on the Garmin Montana series including 600, 600t, 610, 610t, 650, 650t, 680, and 680t models is an easy fix that anyone can do.

In just four easy steps and within 10 minutes, you'll be able to get your GPS back into working order without having to replace the entire housing of your device.

At Huayuxt, we specialize in original-quality Garmin replacement parts, including power buttons, LCD screens, touch screens, back cover cases, battery covers, front housings, and other repair components for the Garmin Montana series.

Whether your Montana has a broken power button, cracked screen, worn housing, or damaged back cover, we're committed to helping you extend the life of your trusted GPS device—so it can continue guiding your adventures for years to come.