Lincoln 2015 MKS Owner's Manual page 55

To clear all MyKeys of all MyKey settings, press the left arrow button to access the main menu and scroll to:
Message
Settings
MyKey
Clear MyKey
All MyKeys
Cleared
Note: When you clear your MyKeys, you remove all restrictions and return all MyKeys to their original admin key status.
MKS (), enUSA
MyKey
Press the OK button.
Press the OK button.
Press and hold the OK button until the following message displays.
I n f o r ma t i o n P r o v i d e d b y :
52
Action and Description