Question about Garmin Nuvi 660 GPS Receiver

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After 2 - 10 Minutes Satellite connection is lost

When I switch my 670 on it finds the satellites and works fine once I begin to move it switches to Acquiring satellites and the ? symbol appears. If I switch to the satellite indicator it shown no connection. If I then switch it off and on again it occasionally works OK for another 2 - 10 minutes. I have tried a re boot but it has no effect.

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Try this and see if it fixes your problem....first disable bluetooth then follow these steps.

1. Power off the unit.

2. HOLD down the power button and you will see "Pre Boot Mode" appear on the lower part of the display. KEEP HOLDING the power button down and the display will flicker, do this until the pre boot mode message disappears. This seems to take a long time (60 seconds at least).

3. Once the pre boot mode message disappears release the power button and your device will perform some activites to recover from the above problem.

Posted on Jan 03, 2009

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Garmin gps 60 can not locate satellite


When you turned it on in the hotel, it is not the Garmin. But if you were outside and could see the clear sky, and the GPS evice did not find the satellites within 2 minutes there could be something wrong.
When you switch of an GPS in one place and you switch it on, on a completely different place, it can take a while till it found enough satellites to make up where it is.
But two minutes should do the trick. Don't try this somewhere inside or close to buildings or trees. The device should have a clear "view" to the satellites above the equator.

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If it is a new unit it can take up to 30 minutes to find the satellite for the first time. I suggest connecting in your car and make sure it is charging and leave it on while driving to work or running errands.
If it has been working and now it is not try pressing the reset button
  • Turn the Garmin Nuvi 1300 off.
  • Press your finger against the bottom-right corner of the Garmin display screen. Leave your finger in place as you power the unit on.
  • Release your finger when the display screen asks, "Do you want to erase all user data?" Use your finger to tap "Yes." The unit will begin to reboot. Do not use the unit until the main menu is displayed. The reset process should take about 45 seconds.
Once you get it going; go to the Garmin website and update the unit. Thanks for using FixYa

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1 Answer

I tried several times but I can't get connection anymore with satelites


You need to perform a reset. Not sure if this is 100% correct for that model but you press the menu button while sliding the power switch. If that's not right it should be in your owners manual or contact Garmin tech support for the exact way.

When you do this have it plugged into the power somewhere, preferably outside or someplace it can or should see the sky. Once you reset it, set it down and walk away from it and do not touch it for up to an hour. It will reset itself wiping out its satellite data which obviously has a problem. Now it will find a satellite and download a new catalogue of satellites which should take a minimum of 15-20 minutes and up to an hour. Once it has that it will find itself and should be operating normally. So when you come back to check on it it should show it finding the satellites again. At that point go ahead and use it as you normally do. It's fixed.

If that doesn't work you probably have a failure in the receiver section. So you will need to get hold of Garmin and find out about warranty repairs or replacement. These are usually pretty bullet proof so hopefully its just the GPS not having the correct data.

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If its raining, that will cause you to lose satellite reception.

If that is not the problem, then do this: turn off TV & satellite. Wait 5 minutes. Power back on. Most of time this will fix it by itself.

If neither of those do it, unattach your satellite cable from back of satellite box. Power everything off. Wait 5 minutes. Now reattach your satellite cable. Power everything on. It should search for you sat and find it. Let me know if this works.

If none of those work, then I would call the sat company for help.

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I am not getting any signal for months, on one of my satellite


Satellite tv cannot work thru regular splitters so make sure if u are using one it is a good one . Check all your connector to make sure there is no little wire touching the coper one , then try moving your dish while someone is checking the signal intensity in front of the tv . If u do all of this , im sure ur gonna get it working in no time

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Unable to acquire satellites


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External antenna - Garmin 25MCX low profile remote GPS antenna

I have been experiencing the same problem many have been having with the Nuvi 6xx and 3xx series giving an error message “Lost satellite reception”.

My problem started mid April 2008 and got progressively worse. I would use my GPS on weekends and it would work perfectly for the first 10 – 30 minutes and then would loose satellite reception, rendering it useless.

I bought my Nuvi 660 when it first came out in October 2006 for just under $700 and is now out of the 1 year warrantee.
I called Garmin Technical Support and we checked my Software version (4.40) and more importantly my GPS SW version (3.00). According to the tech I had on the phone, the GPS SW version was more important then the Software version. It was in fact already updated to 3.00, I did master reset, after master reset, but regardless, nothing helped.

I contemplated what I should do.
Return mine and get a refurbished unit from Garmin for $225 with only a 90 day warrantee?
Buy a new Nuvi 660 for around $300
Buy a new Nuvi 2xx series with fewer features for $200 to $275.
Buy a Megellian GPS?

I read through this forum and came across one person that was told by Garmin “that they are aware of an issue with some Nuvis involving the failure of a diode in the unit that senses whether or not an external antenna is connected.” Apparently this diode failure is caused from the high heat these units experience from being left in a hot car for long periods of time. This would explain why mine would work in the beginning and then die.

So my thinking was, if the diode “thinks” there is an external antenna attached when it isn’t, what would happen if I “did” connect an external antenna?

Garmin recommends the Garmin GA 25MCX low profile remote GPS antenna for the Nuvi 660 and costs $31.49 (not sure about additional costs for tax and shipping)

So I purchased the NEW antenna from a seller on eBay for $25.90 total and IT WORK FLAWLESSLY.

Just to make sure it really was the new external antenna that was working and not the unit coming back to life, I started my 3 hour journey with the external antenna NOT connected. As usual it lost satellite reception in about 15 minutes. I plugged in the GA 25MCX and it immediately connected to the satellites and never lost them.

I repeated the same process coming home and once again, I connecting the external antenna after the unit reported loosing satellite reception, and it worked perfectly.

Conclusion: if your unit is experiencing loosing satellite reception, and is under warrantee, return it ASAP. If it’s out of warrantee, get an external antenna. There are other manufactures of external antennas and all should work as long as it has an MCX connector.

Side Note: This external antenna also worked perfectly on a friend’s Nuvi 350 with the same problem.

I wanted to share this with everyone because I’ve been racking my brain for months over this. I hope this helps.

May 04, 2008 | GPS Devices

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.

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