Did you disconnect the battery when changing the head unit? If this isn't done a fault code appears in the body computer that also makes the odometer to flash.

I have made a video on youtube on this topic, search for my channel Fix It Again Tony.

I've managed to remove the Blue&Me module and stop the blinking odometer on a 2012 Alfa Giulietta. I think the most important thing is to disconnect the battery before removing the Blue&Me module from the CAN bus network. I reckon this applies to all modules which are removed from the CAN ne...