Question about Garmin GPSMAP 545s GPS Receiver

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GPS operation freeze up

My one year old Garmin 545s GPS fishfinder, chart plotter has begun freezing up after 1-2 minutes of use. The screen image does not change and I can't turn of unit off without disconnecting the wiring harness from the unit. Is there a fix without returning the unit to a Garmin customer support center?

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Upgrading the system software of your GPSMAP 545s will most likely fix your freezing up problem.

I hope that helps.

Posted on Jan 31, 2010

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How to Upgrade and Fix your Garmin GPSMAP 545s System Software


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Does your Garmin GPSMAP 545s freeze up?
Is the screen stuck, or do you loose satellite coverage?

I recommend upgrading the system software of your Garmin 545s. There may not be physical damage to your unit, and it may be completely revitalized by replacing the GPSMAP software with the latest version 5.30 (as of January 7, 2010).

  1. Click on "Download" and choose to save the file to your computer.
  2. Choose a location where you can easily find the file, such as the 'My Documents' folder or 'C:\'.
  3. Once the download is complete, go to the location where you saved the file.
  4. Double-click on the downloaded file. This will automatically extract the files to C:\Garmin and run a program to transfer the software update to an SD card.
  5. Load the SD card into your GPSMAP 545s and turn it on to replace the system software of your unit.
I hope that helps.

on Jan 31, 2010 | Garmin GPSMAP 545s GPS Receiver

1 Answer

How do i find water depth


Water depth should show automatically on your sonar page.
if it does not then either you have selected "stop sonar" under your sonar options or you have opted to turn off the depth displayou so the numbers don't show up.
if you areally viewing your GPS or split screen sonar/GPS page, sometimes the depth display is not visible on these pages unless you specifically instruct the unit to display it.
Lowrance HDS 5 Gen2 Fishfinder GPS Chartplotter
Here is a link to Lowrance where you can download a pic version of the operators manual.
Go to page 11 "overlay data" this will give you a step by step of how to add data or readouts to different screens.

Aug 27, 2014 | Lowrance HDS 5 Fishfinder GPS Chart...

1 Answer

Once I power up the unit it freezes to the opening screen with Garmin in the middle. Have tunred on and off several times and it freezes every time


I have had a similar problem with a Tomtom - at some stage the maps became corrupted. 
The solution with the Tomtom was to plug it in to the computer via usb cable and re-load the maps. I believe Garmin have similar computer software available, but you may be able to find more information and relevant updates on the Garmin page for your item: 
https://buy.garmin.com/shop/shop.do?pID=8109&ra=true#gpsmap545
hope this helps.

Mar 14, 2011 | Garmin GPSMAP 545s GPS Receiver

1 Answer

The chart plotter worked perfect for 5 yeas,


I think you have a C- Map card (black colour)clean the contacts with a contactcleaner if it not works try the card somewhere else
The C-Map card have problems that they work for a while and than stops inside the card a some memorychips and they losing contact

Sep 27, 2009 | Raymarine A65 Combo GPS...

2 Answers

Garmin auto gps c330 freezes


"Black Screen"
It took a nap...

Waking up your c330...

If you left your Garmin c330 on running the battery will have 1% life left. If you turn c330 back on again, it will flash screen for 3 seconds then die, even charging it at this point will not wake it back up. TO BRING IT BACK TO LIFE... plug in the power home or car into Garmin c330. There is a tab in the front Garmin gray frame of your screen. You must take like your fingernails and under the logo "GARMIN" pull the whole gray plastic frame off. Underneath the plastic frame to the right hand side. There is a "RESET" button. Make sure power is plugged in while hitting reset. Your battery should come back to life. Cheers

Oct 14, 2007 | Garmin StreetPilot C330 GPS Receiver

1 Answer

Locating satellite


Initialization time has been greatly reduced with newer system software upgrade for the Garmin GPSMAP 545s. Get your system software upgrade here.

I hope that helps.

Aug 30, 2007 | Garmin GPSMAP 545s GPS Receiver

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