I have a S-type 2000. My sun-roof was open a little bit and the shifter got wet. Now, when the park is in "park" or "nuetural" I hear audio out the speaker normally. When the car is then put in to any of the drive gears the audio stops but, the radio unit is still on. Then if I put it back in "P" or "n" the audio returns.

What do I do to fix this problem?