Question about Garmin StreetPilot c340 GPS Receiver

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Garmin C340 startup

I have had the C340 unit for a couple of years and has been workin fine. Since a couple of weeks ago it takes about 2 minutes to find the satellites and start navigating. Also, the voice becomes very slow and low pitch! Any ideas?

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  • Sangwin May 25, 2008

    I have the satellite connection problem, but not the slowing voice. I wonder if it is the same issue. I have tried to reset the unit, and it does the same thing. I wonder if it is a software issue or a hardware issue. I have not yet downloaded new maps although the unit is up to date as far as updates go. If anyone has any ideas please let me know.

  • Kevin Miller May 11, 2010

    Is the battery showing it is properly charged? Any issues with the unit turning off prematurely?

  • Anonymous Jun 10, 2017

    pry the front bezel off the unit and press the semi-hidden MASTER RESET button. (sotware / menu reset function will not correct this) make sure the GPS is charged up or plugged into a good external power source before doing this, especially if you have a questionable battery. you 'should not' lose any of your data - but I removed my SD card just in case. That should fix it. This happened to me after my GPS holder developed a battery connection issue and ran the battery all the way down before I realized it.

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  • Contributor
  • 52 Answers

The clue is that the voice is slowing and low pitch. The main processor time base has slowed... which means everything will be buggy.

First try would be to Reset the unit. Remove the face cover (GENTLY pry it loose by the fingernail groove directly under the GARMIN logo), press the RESET button, then reattach front cover... this is covered in the owners manual, available online.
If not, then it sounds like a hardware failure... time for a 1-800-800-1020 call (their customer service number)

Posted on May 04, 2008

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Posted on Jan 02, 2017

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1 Answer

Why does my c340 keep losing satellite reception


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
nstructions
  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.
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