This sounds like your nav system may not be getting data from the wheel sensors, which provides inertial guidance for times when the vehicle can't receive satelite GPS signals (such as in a tunnel or an underground parking garage)
You can look in the hidden Service Menu (go to the Settings screen and hold down the SELECT button for about 10 seconds) and see what the wheel sensor data shows.
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Originally Posted by apw2607
My v27 NAV finally got lost today. I parked the car in a underground lot, and when I returned to the surface even after it found 3 GPS satellites, it was unable to calculate the correct position. In the end, the system just rebooted itself.
Fortunately, once it restarted, it took a few moments, but it did manage to calculate the correct position.
I've had the NAV get lost before with previous version of the OS periodically, and also had the reboot .... only once before, in a two year period.
Have to see if it happens again and if so, if this is a recurring problem. Too little data right now to point fingers at v27 I think ..... Cheers, Adrian
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