Why is my Garmin MX20 GPS unit not powering on?
- MMelissa PetersonAug 18, 2025
If your Garmin GPS unit isn't powering on, it could be due to a few reasons. First, check for proper wiring. Also, verify the display brightness setting. If the temperature is low, allow the unit to heat up for about 60 seconds. Finally, ensure the data card is fully inserted.