I need help, just bought an 07’ IS 350 with 99k miles. The AC and none of the buttons on top.ie fan, AC work, mine is non-navigation. The fan will not turn off when car is on, it will go off when car is turned off. My radio, CD player all work fine. Should I check fuses and if so where to start? Under passenger side? Any other suggestions would really be of help, ideas etc. would be much appreciated. Thx