I think your right:
Enable Valet Mode
Note: If you are locked out and need to reset the PIN, you can enter
3681 and the system unlocks.
Valet mode allows you to lock the system so that none of your
information on the system can be accessed until it is unlocked with the
correct PIN.
1. Press the Settings icon > Vehicle > Enable Valet Mode.
2. When prompted, enter a four-digit PIN.
After you press Continue, the system is locked until the correct PIN is
entered again.
So use your password...or just press 3681...pretty worthless lock ha.