Audi MMI: Zero Satellites Received

While I was driving near the border between
Germany and Switzerland, I noticed the GPS on
my MMI 3G was drifting and the position of the
car was not the correct one.

It was a sunny day, no clouds, 15 grad Celsius.
I tried a force restart of the MMI but that
didn't work.

I did a car diagnosis but no errors were found.

After one week the Navi stars working again, the
MMI received minimum 4 satellites and
everything was just fine (it worked just two days)

One month later...still not working...

If anyone has a solution, please let me know.

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Later edit: Problem solved! Here is the link:
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Model: Audi A4 B8.5
Motor: 2.0 TDI, 177 HP
Year: 2014 (wagon/kombi)
Navigation: MMI 3G


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