Switch the ignition on using an admin key.
To Clear All MyKeys, use the entertainment display controls to select the following:

Menu Item   Action  
Settings
Select Settings.  
Vehicle
Select Vehicle.  
MyKey
Select MyKey.  
Clear All MyKeys
Select Clear all MyKeys.  
Yes
Select Yes.  
A message informing you that you successfully cleared All MyKeys should appear.  

Note:   When you clear your MyKeys, you remove all restrictions and return all MyKeys to their original admin key status.

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