Do Garmin Map Update
Most common reason for Garmin not working properly is because it’s not updated. Follow the process of Garmin map update and hopefully you will see your Garmin start working properly.
Update your device and if it’s still not working properly then look for further steps.
Do Garmin Reset
There must be an internal issue, which you must look for in your Garmin device. So for this, just reset your Garmin device.
Long press the power button till you don’t see the Garmin’s logo appear on your device’s screen. Wait for a few minutes and then again press the button.
Your device is reset. See resolving the Garmin issue was this much easy.