There's a setting in there to unlink the time from the GPS, but I can't find it. However, it still doesn't want to change the clock in the instrument clusterMy 05 manual has instructions in the comand manual in the system settings section for the clock. The odd thing I found is it changes the minutes in 30 minute steps as long as it sees a gps signal. To make one minute changes I had to get the car under a roof good enough to cut off the gps signal.