Hi,

Go into the diags on the system and see whats wrong yourself. My car had a falulty (dead) GPS pad and it took several weeks to notice since the car was happy using the gyro, wheel sensors, compass and the map road snapping functions.

On the main menu go into the settings screen. In the top right corner there are some numbers a-bb cc/dd

The first number (a) is the generation of the system. After that is the software version. This is for information only, there are plenty of places to show you how to upgrade the sw.

Whilst in the settings screen, press and hold the MENU button. After about 15 seconds the diags screen will appear. On GPS go into tracking and you can see how many satellites are being tracked. If you are in the open with a clear view of the sky you should have at least 6. Only 3 are required for a postion lock. There are other screens on here which allow you to see what the other sensors are reporting.

Hope this helps.