the quickest fix while driving a car was to go in offline mode and come back to normal mode , this fixes it for me, ofcourse this is also doable with a lil scripting, which i found and modified a lil bit over google, just need to run it along with maemo as root and it should work , i havent tested it extensively so will post if succesfull.

hciconfig hci0 reset will only reset bluetooth i suppose, resetting to offline and normal mode seems to solve the problem so instead of that we just need a lil piece of code to do just that automatically.