Question about Garmin StreetPilot c340 GPS Receiver

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StreetPilot c340 will not power on - even with soft reset

- I did a soft reset...still no power on
- Tried to charge by car charger (fuse works fine) and by USB on PC...still no luck
- The only thing that happens is when the garmin is connected to the PC via USB and I Hold the "Soft reset" button for 3-4 seconds, the computer gives a message of "USB Device not recognized"

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  • five40kix Jul 26, 2008

    Does this sound like a dead battery issue...or worse?

  • irishbutterf Jul 28, 2008

    I m having the same problems and my warranty was just up. On hold with garmin will post info of what they tell me....

  • irishbutterf Jul 28, 2008

    well, after being on hold with garmin for 32 minutes they want me to send them the unit back and will repair it at no cost. Try calling garmin I purchased mine on may 25th, 2007.

  • katwoman62 Sep 22, 2008

    street pilot c340 gps

  • b1moran Sep 27, 2008

    My Garmin c340 wont turn on at all. Doesnt look easy to take apart either... Its about a year old.



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Well after being on hold with garmin for 32 minutes they told me to send them the unit back and will repair at no cost.
My unit was purchased on may 27th 2007.

Posted on Jul 28, 2008


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Garmin Street pilot C340 has always worked. This morning it did not turn on. I relpaced the fuse in cord. Any other ideas?

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Hello there:
please follow these instruction and this should help if not let me know and i willcontinue to get you more information for you
  1. Step 1 Calibrate the screen of the Garmin StreetPilot C340. If the touch screen does not seem to respond when you hit it with your finger or a stylus, you may need to calibrate it. To do this, turn the unit off and then hold down the "Power" key for approximately one minute. You will see a calibration screen come up that will recalibrate the GPS2_bing.gif unit.
  2. Step 2 Reset the Garmin StreetPilot C340. If your GPS unit is not responding or is stuck on a particular screen, it may need to be reset in order to operate. To reset, remove the face plate of the unit by gently prying it off. Locate the "Reset" button under the face plate and press down in order to restart the device.
  3. Step 3 Change the fuse of the Garmin StreetPilot C340. If the fuse blows on the GPS, you will need to make a replacement using an ACG/3AG 2 amp fuse. Unscrew the adapter cord at the end and remove the fuse found there. Put in the new fuse to see if this returns function to the unit.
  4. Step 4 Update the software for your Garmin StreetPilot C340. If the GPS is not providing you with correct directional information, you may need to update the software or download new maps onto the device. Connect the Garmin StreetPilot C340 with the USB cord to your PC and log on the Garmin website for available updates.

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try calling Garmin and ask their tech department for help or go to their web site and explain problem they should get back to you right away.

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I had the same problem recently... What I did was open the front casing and hit the reset button under the cover, then it turned on while plugged into the car adapter.

Dec 29, 2006 | Garmin StreetPilot c340 GPS Receiver

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