I really don’t understand the whole concept of the ICU, but from what I have read it could be the cause of my problems. My car used to constantly beep at me and the only beeps that actually worked right were the ones that told me to turn off my lights. I unplugged the “beeper” behind the instrument panel and no more beeps (this also led to me leaving my lights on… whoops.) then my intermittent windshield wipers stopped working and they wouldn’t go to their resting position. The cruise control never worked. Now, if I have to slam on my brakes the car lets out a long beep every 17 seconds until I turn the car off. Is it time for a new ICU? How much would a new one cost?
Not all of those syptoms sound ICU related but I would assume that its causing at least some of your problems. I have pulled quite a few of these from DAs over the past few years and at least half of them have quite obviously damaged boards. I replaced mine about a year ago, and some things started working again. I would just buy a used one from on here. Darussianone has them for sale, and he only sells good used ones. Or buy it new from the dealership and never worry about it again.