Question about Garmin StreetPilot c550 GPS Receiver

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C550 loses connection to satellite

Intermittent loss of link to satellite.  After a while if there is no downlink, the unit will go into automatic diagnostic routine... asks if we are inside a building (no), then asks if we are in Georgia (yes).  Very unpredictable.  Even fails out on open hwy without a tree or bldg around.  Unit sits on upper dash of 2008 Toyota Highlander.  Have not tried any resets, update of firmware, etc...just bought it less than a month ago.  I have an old Magellan that has worked like a charm...only problem is updating database.

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  • aspookie Jun 22, 2008

    I have the same problem but drive a BMW Z4. It works fine in the GM I have but as soon as it is put the BMW it loses the satellite. Attached an external antenna but it didn't help the matter. Garmin and BMW have no solutions. Can anyone help

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I finally found out what the problem was re the BMW. The antenna has to go at the back not in the front. The windshield was interferring with the satellite signal. Works great now on the BMW.

Posted on Jun 23, 2008

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6ya6ya
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Posted on Jan 02, 2017

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Electronic Automatic Temperature Control Module Self-Test
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Even signals from the main providing studios are susceptible to weather conditons even tho they have huge, high-gain transmitting dishes!

Weather is a major factor for both the uplinks and downlinks! Storm clouds can block the signals anywhere in the signal path(s). Rain clouds do too ~ even if it's not raining yet. Water-laden clouds make some of the BEST signal attenuators.

So one may have a gorgeous day in San Diego (let's say), but storms back east could trash satellite reception at his location and potentially everywhere else!

As you know, weather conditions all over the US are changing constantly with many severe storms occurring this past week and during any winter. In fact this week there was total signal loss on several satellites and I suspect storms back east were a big factor.

So it could have just been issues of timing for you. The UPLINK had intermittent problems with signal paths semi-crippled by weather... YOUR weather was CLEAR, but your reception was far from problem free ~ only because of weather problems elsewhere.

If you see intermittent satellite reception do check out the weather... especially back east.

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