Question about Garmin GPSMAP 498

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Garmin 498 - trouble finding satellites

Unit turns on fine but very slow to find satellites and the last two trips the unit never located satellites. Have checked cable and antenna.

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  • tkohn Nov 26, 2008

    My Garmin 498C works fine for two or three hours and then it cannot locate the satellites. I unscrewed the coax cable and cleaned it and sprayed corrosion X on it to try and remove any corrosion or saltwater buildup on it but this did not alleviate the problem. Coax is not damaged in any way. I am thinking that maybe the antenae in malfunctioning.

  • Anonymous Jan 11, 2009

    takes ages to find satellite!

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Push power/menu together or power/page together. the whoole unit will reset. you will lose all saved data but this may help

Posted on Dec 29, 2008

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I have a Garmin Nuvi 300 model and from last few days its not picking the satellite signals when I open the antenna, it keeps saying searching for satellitie signal. What could be problem & can it be...


Hello there,
As GPS units are used, data is gathered which helps them acquire satellites quickly at the start of each use. If a device is used daily it should be able to acquire satellites in a minute or less. Using a GPS device while it is outdoors with a clear view of the entire sky is the ideal condition for acquiring satellites. Please know that there can be several different factors that may cause a GPS unit to not acquire satellites:
If your unit is trying to acquire satellites for the first time, it may take longer than normal to establish an initial position. If the unit is powered on and outdoors with a clear view of the sky this should not take more than 3-5 minutes. If your unit has not been used for an extended period of time (more than a month), it may take 3-5 minutes to acquire satellites. If your unit is indoors, it may not acquire satellites. Even standing next to a window indoors will block a majority of the sky which is needed for a device to locate and lock onto a satellite signal. If you have just finished updating the software in your unit or you have performed a master reset, your unit may take 3-5 minutes to acquire while outdoors as the data that is used to locate satellites may have been erased. If your unit has traveled over 500 miles while turned off or not tracking your travel, it may take 3-5 minutes to acquire even in ideal conditions. If your vehicle has a protective coating on its windshield or electronic devices which interfere with the unit receiving signal, your unit may need an external antenna* in order to acquire satellites. If you suspect this to be an issue, try taking the unit outside of the vehicle with a clear view of the sky for 3-5 minutes so that the unit can acquire satellites. If your unit loses satellites once moved back into your vehicle you will most likely need an external antenna*. If your unit is still having trouble acquiring satellites, please ensure that it has the latest version of operating software by using our WebUpdater program. Once your unit is updated please allow the unit to acquire satellites outdoors in a stationary position with a clear view of the sky.
*Note: Some units may not be compatible with an external antenna. Please check the Compatible Devices tab on the external antenna's page to see if your unit is listed.
Hope this was helpful to you. Goodluck Elect_Comp

Sep 01, 2011 | Garmin GPS Devices

1 Answer

My Raymarine C 120 GPS intermittently stops working.


I had to replace a GPS antenna unit with cable. Sometimes, during bad weather or strong sun, I lost FIX on satellites. Cleaning the top of antenna did not help. Unit from Ebay was also a junk. Get a new one after testing display on a friend boat.

Jul 28, 2010 | Raymarine C120 GPS Receiver

1 Answer

I have a garmin 260 and lately when I turn it on it takes a very long time to acquire satelites.


Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} As GPS units are used, data is gathered which helps them acquire satellites quickly at the start of each use. If a device is used daily it should be able to acquire satellites in a minute or less. Using a GPS device while it is outdoors with a clear view of the entire sky is the ideal condition for acquiring satellites. Please know that there can be several different factors that may cause a GPS unit to not acquire satellites:
  • If your unit is trying to acquire satellites for the first time, it may take longer than normal to establish an initial position. If the unit is powered on and outdoors with a clear view of the sky this should not take more than 3-5 minutes.
  • If your unit has not been used for an extended period of time (more then a month), it may take 3-5 minutes to acquire satellites.
  • If your unit is indoors, it may not acquire satellites. Even standing next to a window indoors will block a majority of the sky which is needed for a device to locate and lock onto a satellite signal.
  • If you have just finished updating the software in your unit or you have performed a master reset, your unit may take 3-5 minutes to acquire while outdoors as the data that is used to locate satellites may have been erased.
  • If your unit has traveled over 500 miles while turned off or not tracking your travel, it may take 3-5 minutes to acquire even in ideal conditions.
  • If your vehicle has a protective coating on its windshield or electronic devices which interfere with the unit receiving signal, your unit may need an external antenna* in order to acquire satellites.
    • If you suspect this to be an issue, try taking the unit outside of the vehicle with a clear view of the sky for 3-5 minutes so that the unit can acquire satellites. If your unit loses satellites once moved back into your vehicle you will most likely need an external antenna*.
If your unit is still having trouble acquiring satellites, please ensure that it has the latest version of operating software by using our WebUpdater program. Once your unit is updated please allow the unit to acquire satellites outdoors in a stationary position with a clear view of the sky.
*Note: Some units may not be compatible with an external antenna. Please check the Products tab on the external antenna's page to see if your unit is listed.

Jan 16, 2010 | Garmin nuvi 260W GPS Receiver

1 Answer

Slow on picking up satelite on nuvi 260w


Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} As GPS units are used, data is gathered which helps them acquire satellites quickly at the start of each use. If a device is used daily it should be able to acquire satellites in a minute or less. Using a GPS device while it is outdoors with a clear view of the entire sky is the ideal condition for acquiring satellites. Please know that there can be several different factors that may cause a GPS unit to not acquire satellites:
  • If your unit is trying to acquire satellites for the first time, it may take longer than normal to establish an initial position. If the unit is powered on and outdoors with a clear view of the sky this should not take more than 3-5 minutes.
  • If your unit has not been used for an extended period of time (more then a month), it may take 3-5 minutes to acquire satellites.
  • If your unit is indoors, it may not acquire satellites. Even standing next to a window indoors will block a majority of the sky which is needed for a device to locate and lock onto a satellite signal.
  • If you have just finished updating the software in your unit or you have performed a master reset, your unit may take 3-5 minutes to acquire while outdoors as the data that is used to locate satellites may have been erased.
  • If your unit has traveled over 500 miles while turned off or not tracking your travel, it may take 3-5 minutes to acquire even in ideal conditions.
  • If your vehicle has a protective coating on its windshield or electronic devices which interfere with the unit receiving signal, your unit may need an external antenna* in order to acquire satellites.
    • If you suspect this to be an issue, try taking the unit outside of the vehicle with a clear view of the sky for 3-5 minutes so that the unit can acquire satellites. If your unit loses satellites once moved back into your vehicle you will most likely need an external antenna*.
If your unit is still having trouble acquiring satellites, please ensure that it has the latest version of operating software by using our WebUpdater program. Once your unit is updated please allow the unit to acquire satellites outdoors in a stationary position with a clear view of the sky.
*Note: Some units may not be compatible with an external antenna. Please check the Products tab on the external antenna's page to see if your unit is listed.
Good Luck. Did this help?

Dec 03, 2009 | Garmin nuvi 205W GPS Receiver

3 Answers

Magellan 700 roadmate


it is a dicontinued like mine roadmate700 and started losing sattilite signal like everyone says here ,i got upset i spent alot of money on it,then this happens, so i decided and bought the new magellan mastreo 4000 and just updated the software and no problems i love it,portable,thin light weight internal chargable battery that lasts 3hrs,the signal strenght is awsome,never had any problems,my advice junk it, the 700 like i did and purchase a new unit.this way it will save you alot of problems and headaches in the future,beleive me.

Jul 29, 2008 | Magellan RoadMate 700 GPS Receiver

1 Answer

Abnormal Powerdown Error Code


Your battery is dead, which is causing the problem with "slow to receive satellites". Normally when you turn off the unit it will remember the last location and time, then the next time you start the unit it already has the time and current location to acquire satellites, but with a dead battery it has to start from scratch. Check the screen and see if it says "Locating Satellites" or "Acquiring Satellites". Locating satellites will take longer. Replace the battery and your problems should go away.

Jul 22, 2008 | Garmin StreetPilot C330 GPS Receiver

1 Answer

Reset before trip completed


Hmmm, It has a stop navigation button, and it needs time and line of sight to the satellites to figure out where it is....somewhere in that fine manual that came with the device you can expand your knowledge of the fine workings of this nifty piece of electronics!

Jun 10, 2008 | Garmin nuvi 350 GPS Receiver

5 Answers

Garmin Nuvi 360 - Acquiring Satellites


Did you check to make sure that it is not in demo mode?
I've seen complaints that the unit is not working, and it was in demo mode.

If everything is set up properly and it still does not work, you will most likely have to send it to Garmin in the US.



Jerry G.

May 28, 2008 | Garmin nuvi 350 GPS Receiver

3 Answers

Aquiring satellites


Are you outside with a clear view of the sky? It should find satellites once the unit is turned on. Does it say "Looking for satellites" or "Acquiring satellites"?

If it is "looking for satellites" then it means that the unit have lost all data (time, date, location). If it is "acquiring satellites" then it have date and time, but not location.

Looking for satellites require a longer setup time (could be as much as 15 minutes). Acquiring satellites is much faster (not more than 2 minutes).

Date and time is updated from satellites once the unit gets a satellite lock.

Jan 31, 2008 | Garmin StreetPilot C330 GPS Receiver

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