How to Fix a Safety Key Off Message on a Treadmill Horizon Fitness Updated August 25, 2021 20:54 Issue: The message “safety key off” displays across the console window. Resolution: Safety Key Troubleshooting Was this article helpful? Yes No 0 out of 0 found this helpful Have more questions? Submit a request Related articles How to Fix a Treadmill Display That Shows Dashes or 8's How to Replace the Upper Board and Reed Switch on a Treadmill How Do I Fix Resistance Issues on a Treadmill? When to Replace a Treadmill Belt How to Fix Excessive Static Electricity on a Treadmill Comments 0 comments Please sign in to leave a comment.