Changed the battery in my polar cs400 and has now locked the settings mode.Anyone know how to unlock it?

Need a faster answer?
For CS400 you must do factory reset:
1) Hold all 4 buttons (2 left side, 2 right side) down until "everything is illuminated"
2) then press and release left-down button and after that press and release right-upper button (it must be done fast, lets say in 1 second)
3) if you got service menu, then use right side buttons to navigate to "Reset to default". If no service menu, then repeat 1. and 2.
Was this answer helpful?
Yes
No
Thank you for your feedback!