my gyro sensor suddenly stopped working. the arrow doesn't point straight upwards anymore. does anyone know how i can fix this? i looked through the Setup menu but couldn't find anything.

 

how does the arrow point? Does the map stay facing north and the car moves on the roads? If that's the case, all you need to do it touch the compass in the upper right corner, that will change it so that it's back to the orientation you're used to.