Question about Garmin nuvi 255W GPS Receiver
Most GPS navigation devices from Garmin has a reset function which allows user to access a Maintenance Mode screen with system information, diagnostic details or perform the reset function to restore Garmin Nuvi or other series unit to its original default factory settings.
Depending on which model of Garmin GPS unit you're using, the following routine can reset the Garmin device to original factory loaded settings, or bring up the Maintenance Mode with access to System Information and View Diagnostics screen, where users can see various logs, and of course, clear all user data (reset to factory defaults) or clear Waypoints.
In order to reset Garmin device or enter into maintenance mode, perform one of the following procedures:
Power off Garmin unit. Press on continuously the upper top left corner of screen and then power on the unit by pressing once on the Power button. You should be prompted to clear all user data, or asked if do you really want to start up in maintenance mode. Press "Yes" to reset (warning: all data will be erased and lost, so backup before proceeding) or enter maintenance mode.
Hack above works on Garmin Nuvi 660, 680 series.
Turn off Garmin device. Press down on bottom right corner of the touchscreen, and then power on the GPS unit. You should be prompted whether do you really want to erase all user data, or asked if do you really want to start up in maintenance mode. Press "Yes" to reset (warning: all data will be erased and lost, so backup before proceeding) or enter maintenance mode.
Trick above works on Garmin nuvi 200, 250, 360 750, 760 series unit. In fact, there is a video demo by user of Garmin Nuvi 360 on how to perform the hidden reset function.
Hope helps. (remember to rate and comment this answer).
Posted on May 19, 2011
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Posted on Jan 02, 2017
SOURCE: My Garmin Nuvi 255w Car Gps
You must call Garmin at 1-800-800-1020 they will walk you through plugging in nuvi to your computer (must have usb cord) and it will upload then go to my computer and choose garmin drive then click garmin folder and either find the folder they say or make new one like I did with the guy on the phone and put in code. The only information needed is the numbers on the bottom of the device.... super fast fix!
Posted on Mar 12, 2009
When you first programmed the GPS you have the opportunity to select a safe location,
if you selected the safe location, go back to that location, and the lock will not be on, it is for the reason of forgetting it, but it will only work in that location ~ ( ie: your old driveway )
If you cannot do this,
it's a Garmin job to unlock it,
There is no other way to unlock it.
Posted on May 19, 2009
SOURCE: locked out of Garmin nuvi
To perform a Master Reset on the nuvi 200, 205, 465, 500, 600,
700, 705, 1200,1300,1400 or 1600 series device:
Note: A master reset will erase all waypoints or favorites and will restore your unit to the default factory settings. If you would like to back up your favorites you can find instructions to do so here.
***Don't forget to VOTE for the guys who take an interest in helping!
Posted on Apr 19, 2010
Your particular GARMIN is locked and to unlock it - you must send it back to GARMIN or DRIVE to the location where it is preset.
Please go here and read page 6
Posted on May 06, 2010
Plain and simple answer: Can't.
Detailed answer: this is a security system feature which cannot be bypassed. The only way to get around the password feature is to send it in to Garmin, with the original receipt from an authorized dealer, and they will unlock it for you.
Posted on May 20, 2010
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