Question about Garmin StreetPilot c340 GPS Receiver

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Unit shuts off

The c340 unit turns on for a minute and then says "external battery power loss" and will shut off in 30 seconds

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I assume this message is when operating from the internal battery alone, correct? It could be that the unit is confused about the power source status... yes, electronics sometimes get confused too.

Have you tried a hardware RESET? The button is hidden behind the front panel, which snaps off by a fingernail slot located directly under the GARMIN logo on the front panel.

* Use caution removing and reinstalling the front panel... it's somewhat fragile... wiggle it a little to get it off.

Press where it says "Press to Reset", hold for a second or two. Charge the unit with the car cord or USB cable, then try to turn it on again.

Once you can get the unit to (hopefully) turn ON, you should run all updates (there may be several!) using Garmin's Webupdater. (Connect to computer with USB cable first.)

Hope this helps!!

Posted on Jul 18, 2008

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