The rdaio does not turn off when the door is opened. Dome light stays on too long. Also, for no reason, when the car is parked, a few times over the last week the horn sounds and the lights flashed like what happens when the red button on the key fob is pressed. Are these all related? If the radio does not turn off when the door is opened, sometimes when I push the door switch in and out several times the radio shuts off. Is this switch hard to replace? Thanks for any help.