UK GPS Sat Nav location problem - Mercedes-Benz Forum

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post #1 of 4 (permalink) Old 02-03-2010, 06:28 AM Thread Starter
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UK GPS Sat Nav location problem

Hi, I am new to this forum but hopefully someone can help me with my problem.

I have a UK 2004 E class and have a problem with the sat nav. The marker on the command unit is showing the location of the car in the wrong place (aprrox 30miles north of where I actually am).

When the car is moving the marker does move but it is moving on the map 30miles away and makes no sense.

Anybody have an idea what the problem could be?

I have been using a 2009 disc which worked fine for 6 months.

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post #2 of 4 (permalink) Old 02-03-2010, 08:55 AM
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I'm not going to be much help to you. (but I also have a 2004 MB with a factory fitted COMAND SatNav system in the UK. I am still using the original Nav CD supplied with the car, so it is now a bit out of date with some new roads. (not many, in practice)

Just now and again the display gets totally screwed up, and shows an area miles from where I actually am. Also it sometimes displays the number of satellites in view. Mostly it doesn't. It seems to correct itself.

If the co-ordinates are being incorrectly calculated, it must be an erratic s/w or hardware problem in the COMAND unit. Mine is not frequent enough to bother me, as I do not use the system enough to matter.
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post #3 of 4 (permalink) Old 02-03-2010, 09:37 AM
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If it shows consistently a wrong location and the map seems to move as the car moves, then it must be a bad GPS antenna and the navi processor is working with gyros and speed signal. How many satellites does it report? Probably "0" or "-".

A lot of info on this at the W211 forum.
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post #4 of 4 (permalink) Old 11-04-2010, 04:31 AM
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I have a 2004 E Class and just resolved this problem....
My system was reporting "0" satellites. I purchased a new GPS antenna with blue fakra plug from ebay for $15 and problem fixed.

I mounted the new antenna under the rear parcel shelf.
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