Question about Garmin GPSMAP 498

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Garmin 498C sounder cannot locate satellites intermittently.

It works perfect for two hours or three hours and then it cannot locate the satellites. Power is always on. Screen is on. Looks good.

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SOURCE: Garmin NUVI 660 - can not locate satellite

These are the instructions I got from Garmin as how to do the Master reset:

Here are the steps to backing up the favorites on your unit and then performing the master reset. First, you’ll want to plug your unit into your computer via USB cable. Once it’s plugged in, you’ll want to go to My Computer in your start menu or from your desktop and double-click on the Nuvi. At this point, you should see a few folders, but you’ll want to double-click on the Garmin folder. Here, you’ll want to look for the “GPX” folder and you’ll double-click on that. In this folder, you’ll want to drag and drop the file titled “Current.gpx” to your desktop to copy it. Now you are able to do the master reset.

To do that, you’ll want to start with the unit turned off and press and hold on the upper left hand corner of the touch screen. While holding the touch screen, power the unit on and continue to hold. You should get a message that asks if you really want to go into maintenance mode and you’ll want to select “Yes”. At this point, you’ll want to select “clear user data” and then select “Yes” when it asks you if you really want to clear user data. Now, the unit should restart and you’ll want to take it where it has a clear view of the sky and let it sit for up to 30 minutes to acquire satellites. If after 30 minutes it does not acquire satellites, you can go ahead and reply back to me.

Either way, once we have your unit back working again, you can follow the first set of steps again to get to the GPX folder and drag the “Current.gpx” folder from your desktop to that folder on your unit. This will replace your favorites.


Posted on Oct 07, 2008

  • 1 Answer

SOURCE: Garmin Nuvi 360T won't find satellites

I should have posted this sooner.  I got hold of Garmin about my problem with the nuvi 360.  They were very nice about it and had me send the unit to them and they sent me a new one.  It was that simple.  I never found out what the problem was but the explanation from the other guy makes sense...... that the internal battery wore out and had to be replaced.  I am very happy with Garmin products and am glad everything worked out.

Posted on Oct 27, 2008

  • 1 Answer

SOURCE: Garmin Forerunner 305 cannot locate satellites

I tried to install Garmin GPS Chipset Type G (part of Garmin Webupdater) but it gave me an error:
"This Garmin device is unable to program the requested memory region. This could be due to an incompatibility between this application and the Garmin device"...

help!

Posted on Jan 20, 2010

KingDWS
  • 1606 Answers

SOURCE: My Garmin 498C will not show the contore of the

You need to check to see if the depth sounder transducer is connected or functioning. It might be turned off, the connectors may be bad or the transducer is bad. I don't have the 498 manual in front of me but I think there is a test function under the setup menu. I'd check my connections (the usual suspect) then run that.

Garmin tech support is pretty good/quick. So don;t be afraid to give them a call.

Posted on Aug 29, 2010

leethedeuce
  • 4472 Answers

SOURCE: my garmin gps 178c sounder

I assume your talking about the marine updater. All the steps are located here:
http://www8.garmin.com/products/marineupdater/
If you have any other questions let me know.
thank you,
Lee

Posted on Oct 10, 2010

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My Garmin 498C will not show the contore of the bottom or give me a depth reading. The GPS works and will show me charts but, not the sounder option though.


You need to check to see if the depth sounder transducer is connected or functioning. It might be turned off, the connectors may be bad or the transducer is bad. I don't have the 498 manual in front of me but I think there is a test function under the setup menu. I'd check my connections (the usual suspect) then run that.

Garmin tech support is pretty good/quick. So don;t be afraid to give them a call.

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http://www8.garmin.com/manuals/GPSMAP178CSounder_OwnersManual.pdf

might be your best bet to help initialize your unit. The info on how to graphically initialize your Garmin can be found on page 5.

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I have a garmin gpsmap 498, 4 yrs old. I have been loosing satellite reception. I have examined the coax cable- I do not see any issues. Where do I look?


Had same problem,,, you need to perform an "Auto-Locate" With unit plugged in but not turned on, push the Page and Power buttoms at the same time,,, continue to hold down the buttons until the "I Agree" message appears. Then release the buttons, agree by pushing Enter. The system will then go through an Auto Locate sequence that corrected my problem.

Sep 10, 2009 | Garmin GPSMAP 498C Sounder GPS Receiver

1 Answer

Hooked up this spring but can't find satellites. Nothing has changed


Thanks for the comeback.

Problem was my antenna wire. Somehow the wire wore through where it went through the hard top. Probably due the the high winds we had this winter which caused the cover to rub and pull against it.

Thank you

CJ

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I would contact Garmin and get their price for a repair. Navigation is too important to trust to a repair that may or may not be correct. Just go to http://www.garmin.com and click on the support tab.

Thanks for using Fixya.com

Apr 21, 2009 | Garmin GPSMAP 498C Sounder GPS Receiver

3 Answers

Garmin 168 Sounder LCD screen display errors


I had the same problem and contacted Garmin. This is being caused by a software issue that started when the government updated the software in their WAAS satellites. The Garmin website will give you instructions on how to correct this but I have listed them below:

Power on unit
Press enter to get past the I Agree screen
Now you should be on the satellite page, press the menu button one time
Highlight WAAS off and press enter
By doing this, the unit should not shut down.

I followed these instructions and my 168 Sounder is working fine.

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Garmin Nuvi 360T won't find satellites


I should have posted this sooner.  I got hold of Garmin about my problem with the nuvi 360.  They were very nice about it and had me send the unit to them and they sent me a new one.  It was that simple.  I never found out what the problem was but the explanation from the other guy makes sense...... that the internal battery wore out and had to be replaced.  I am very happy with Garmin products and am glad everything worked out.

Feb 08, 2008 | Garmin Nuvi 360 Bilingual GPS Navigator...

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