I recently had a new battery put in my 2004 Mercury Montery van. Since that time my CD player and radio flash on and off making a static radio noise when I crank up the car. I turn the radio off and the noise goes away but the blinking doesn't stop. Within a minute the radio will come on by itself in the AM mode making the static noise again even though we never listen to AM. We change it to FM and can listen to the radio but the CD player will not open or play.