Automatic shutdown garmin 660 when car is turned off and power in car remains

Do you have a reset button available, if so push that to reset the unit and try again

Hello ,

try updating ur GPS ...
http://www8.garmin.com/support/agree.jsp?id=1921

Here's a work around. 1) Plug the USB cable in and let enter Sync Mode as usual. 2) When the Garmin unit is in Sync mode, unplug the USB cable. 3) The Garmin unit will start to exit Sync mode, at which time, IMMEDIATELY plug the USB cable in again. 4) If you plugged in the USB cable in time, notice the Garmin unit will remain out of the sync mode.

Hi,

Reset button behind the Antenna, press this in for a few seconds.
Use the Web-updater at Garmin, to update it too,
Jack it to a PC and run the update,
If still playing up, Use the Firmware update at Garmin for it,
(( google Garmin 660 software updates ))
Should be good then
Regards
Richard.

Hi

I had the same problem. My Nuvi 350 did not power up for a couple of days. I suspected moisture to be the culprit. So I took my wife's hair dryer and blew hot air(in the intermediate setting) into the SD card slot in the GPS for a couple of minutes. Take care not to overheat the GPS or Screen.
Pronto my GPS powered up without any issues.
Hope this helps

My Garmin 660 after going thru the initial start up of "loading map" it will just SHUTDOWN. I have tried to clear the data in the diagnostic menu as recomendated by Garmin support to no avail. At the start, the trouble is it will just stay in the loading map stage. Then later it begin to shutdown.

My Garmin 660 after going thru the initial start up of "loading map" it will just SHUTDOWN. I have tried to clear the data in the diagnostic menu as recomendated by Garmin support to no avail. At the start, the trouble is it will just stay in the loading map stage. Then later it begin to shutdown.

Are you using the Garmin AC adapter or the Garmin car adapter? Using the wrong cable and the Garmin will think that you are trying to connect to a computer. Not all USB cable are alike.

When connected to your computer it thinks that you want to upload or donwload information.

folks, the garmins have an on-board battery that needs to be powered up (at least occasionally) via the usb port - like from your computer. just using the dc car power cord does nothing for this battery. i've had this exact same problem on both my 760 and 780 nuvi units. fixed it using the usb charge. seems to run down differently for all the various nuvi models. my regular charge will hold for 7 hours on my old 660, my 760 and 780 work about 5 hours. my 'power up' failed on the 660 after 10 months with no internal battery charge, but the 7xx models only took about 5-6 months to 'fail.' hope this helps. jack b :-) in midland, tx usa

Problem solved: I got through to Tech Support. They suggested a 'hard reset', which solved the problem: Put you finger on the lower right screen while you power up and it will do a hard reset---and it will get past the "loading maps" screen, where it had been stuck.