I've had a few issues over the last few weeks with the sat nav not starting. The option is on the menu, but when I select it I just get a 'please wait' (can't remember the exact words) message. There is no way to get it working, however after leaving the car, and comming back to it it works. However the system seems to have done a complete reset as the country needs to be selected again. Sometimes the bluetooth seems to be effected by the reset as all text messages which were previously marked as read are now unread.
I guess its done this 4 or 5 times over 12 months, but twice now inside a week. Is this normal, or do I have a problem?