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      06-16-2021, 08:04 AM   #1
GyroF-16
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Drives: Z4 M Coupe
Join Date: Mar 2013
Location: Front Range area, CO

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GPS antenna on a Coupe?

The GPS Nav in my M Coupe has been “getting lost” lately. It usually starts at the correct location, but gets confused on position when I start driving. And no elevation reported (which implies to me that it’s not seeing enough satellites to get a good 3D position fix).

I’m wondering if the antenna is the problem.
Anyone know where it’s located on a Coupe?

Possible contributing factors:
- I pulled panels in the trunk last week and installed a BlueBus. I didn’t disconnect anything unrelated to the audio (two CD changer related plugs). But it’s conceivable I dislodged something without knowing it.
- I also inadvertently ran the battery down while troubleshooting the BlueBus. It’s recharged now. Could something in the GPS system need resetting to work correctly?

Anyone have ideas? Or some guidance for troubleshooting the GPS? Is there a way to get into a diagnostic mode where I can see how many satellites it’s seeing at a given moment?
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