A scratched / diryt / faulty map disc can have errors in the disc sector containing the part of the map you were using.

This may be your problem.

Remedies:
Clean the disc
Run it through one of those "repairing" machines that remove scratches
Or replace the disc with a new one

Also, a weak laser may mean reading the disc is becoming more and more dificult for the nav. If the fault continues with a new disc, try then replacing the laser.

I have not seen this problem on my X3 and X5 but I do think it's not a map problem. It seems the receiver is not working and not getting the correct location. I have no idea how to troubleshoot or fix the problem. For me it would mean a visit to a dealer.

I do have GPS software on my phone, for situation like this.

You can easily confirm the GPS receiver

Does it show green satellites on the little globe symbol on the screen? Greeb = signal being received.

Is the GPS position correct? Write down and compare with Google Earth

IS the GPS signal strong enough?
Look at the S/N levels in Service Mode. between 10 and 15 for at least 3 satellites is normal

:iagree:

If your close by a dealership borrow a copy from them and drive around for a bit and see what happens