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Re: lock code not working
Take the unit back to your security location which you sent when you
first got the GPS. Without knowing the PIN or security location, you
will not be able to unlock the unit. You will have to send it in to
Garmin to be unlocked, and you will have to include your receipt from
an authorized dealer.
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There are three options to unlock a PIN locked Garmin. 1 - Enter the correct PIN number. 2 - Take the unit to the location at which the PIN was entered. The unit will automatically unlock. 3 - Send the unit back to Garmin,
Place your thumb nail in the groove located under the Garmin logo on the bezel.
Gently pull off the faceplate.
Press the reset button.
If it still asks for a code and you don't have it, it should ask you to drive to a secret location to unlock the device. If you don't know the location, the only other option you have is to send the unit to Garmin to be unlocked. You can also try to call Garmin with the serial number and see if they can do something less annoying to unlock it.
If it is the garmin lock, then you need to take the unit to your sercure area, and the unit will unlock. This should be where ever it was you set up the unit. If you don't remember either. Then the unit has to go back to Garmin to be unlocked.
Unfortunately, even if you perform master reset on Garmin GPS unit, it does not reset Garmin Lock security feature, which password-protect most Garmin electronic devices to deter theft. If you forget the PIN or password unlock code to unlock the Garmin unit, the best solution is to bring it to Garmin to get unlocked. “Secure Location” does not unlock a locked Garmin unit either as it’s only a temporary fix as when it’s turn on outside the security location, the device is locked again."
So unfortunately, there is only one option: You have to send your nüvi into the Garmin, who can unlock it. Remember original receipt.