heres my radio problem.i have an 02 X5, no nav, no dsp.when i first got the car, first 4 buttons didn't work.after time the radio would stop working on rainy days.if i was lucky it would turn on then turn off afterwards by itself.finally it wen't downhill completly and won't work all together.my primary thought is the MID needs to be switched out.i did check the fuse in the glove box and its okay.wiring harness seems fine however i didn't test it with a multimeter.on occasion, when i rip the radio out 2 lights by the telephone button would light up for a split second.thats it.i think the business CD is fine considering i can still get cd's in and out of it(kinda pointless now).any idea what the problem is?