If you search you will find some answers on some of these. I can tell you about the ones I know. There is a common problem with a relay that causes the seats to itermittantly stop working. However, the symptom is that it affects both seats. If you have one working and one not then it would not be the relay.

As for the AC display, I found the best fix is tap on the glass pretty hard with your finger. This works much better than just pressing here or there. Also mine acts up less now that the weather is cooler. Only real fix I know of is change out the unit, about 450.00 I think.

Mike

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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra