Navman Pin 570 / Audi A3 problem?

[sawm24]

A family member of mine has just received a Pin 570 as a gift.

The first 2 weeks went fine however last week on a foggy mornining she couldnt get any GPS signal, she tried many things including a full reset using the switch at the bottom but couldnt get it to work that day.

She now says that after some trials that the unit doesnt seem to work properly when the cars air con is turned on. Has anyone heard of anything like this before?

I have also rung the local audi garage to ask if the A3 has a heated windscreen and they have said that it doesn't.

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