Question about Garmin GPSMAP 525s GPS Receiver

2 Answers

Garmin 525s will not turn on

I connected the unit to the battery, the unit turned on for 1 second and then turned black.
After the first try nothing happens when I try to turn it on.
The unit was connected red wire to plus and black wire to ground.

Posted by Rolf1 on

  • Rolf1 Oct 25, 2007

    I noticed on Garmins support page that a unit upgrade may fix the problem:

    Changes made from version 2.40 to 2.50:

    • Fixed a problem that could cause the unit to shut down shortly after power-on.
    I live in Norway and bought the GPS from USA.
    It would be nice to fix the problem at home instead of sending it back.
    Is it not possible to reset the unit ? Maybe some magic button combination?



2 Answers


I tried to reset it but it did not work. I have shipped the GPS back for a replace.
Thanks for trying to help. When I get the new GPS I will start with updating the software as described.

Posted on Oct 29, 2007



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This is a common problem with 400 and 500 series garmins.  The only fix is to take it back and exchange it.  There has been a software update to prevent it from happening but once it powers down it's too late for the update.  This has been a known problem since they hit the market in May. Any respectable retailer should exchange it with no questions asked, especially if you just bought it.

Posted on Oct 25, 2007

  • Anonymous Oct 26, 2007

    In order to do the update, the unit needs to be on.  To do a master reset hold down the home key while powering up the unit.

    I tried this with a 440s with the same problem and it would not power up, but you may have better succes with this model.

    To do the update you nneed an sd card reader.  Get a blank sd card and  format it.  Power up the unit with the blank card in the slot.  This will prep it for the download. Now go to the garmin website, select "on the water" then select "chartplotter" or "sounders".  Find your model on the list and select it (make sure it's the 545s, not just the 545!).  When you go to the web page for your model there is a box with a link to update software (usually in the upper left side of the page).  Download the update to your PC, then run the program with your blank card in the card reader.  After the program transfers to the card, turn on your 545s and insert the card. A system info screen pops up.  Select "update software" and the update should begin automatically.  When the update screen pops up you may see an ambiguous message that says it doesn't recogn ise the card.  Ignore that and try the update anyway.  When the update is done the unit should show the new software versions, with the old ones in parenthesis.  It may also restart.

    If this doesn't work, there is a Garmin service center in Europe, but I'm not sure where. 



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