Originally Posted by BMW X5

hey guys i posted this earlier but no one seemed to respond so lets try this again. on the stock head units w/o nav, it is possible to turn the radio on with the key out of the ignition, is that possible on the units with nav?

also on those w/o nav units the volume can be adjusted based on driving speed or road noise can that be adjusted on the ones with nav ? the reason i ask is that it just doesnt sound as loud as one might imagine for a system with 10 speakers (prem hifi) and a sub