To unlock the PIN: there is an Internet connection.
A Mercedes me user account exists at Mercedes me.
An individual user profile is active More.
If both PINs match, PIN protection is active.
Switch the function on or off.
If the PIN has been entered incorrectly three times, the PIN will be blocked. You can have a single-use password sent to you via the Mercedes me connect online portal to reset the PIN protection.
PIN protection is reset, and you can set a new PIN.