Garmin Forerunner 405CX

Factory Reset Instructions

1. Press and Hold down BOTH the Start/Stop and Lap/Reset Buttons (these are the two silver buttons on the right hand side).
2. Keep these two buttons pressed in for 6 seconds and the screen will go blank.
3. Release the Start/Stop button (the top one) and continue to hold the Lap/Reset button for 3 additional seconds, then Release it.
4. Select “YES” (Enter Button) to the prompt asking to clear user data.
5. This will erase ALL data and then guide you through all of the introductory menus once again.