While my wife was driving down the road she turned on the radio at which time the radio volume went instantly to maximum full volume at it's lowest setting which was enhanced by a stock bose amplifier. My wife stated that she was extremely startled which could have caused an accident, she further suffered hearing loss as a result. This is extremely dangerous for all drivers of such a malfuntion as some by such shock could cause fatalities and or serious injury. The manufacturer at Grand Strand Nissan on route 501 in Conway SC, stated it was the Bose amp malfuntion which I swaped out with another Bose amp and the problem still exist. This is very serious.