I have a 2001 X5 3.0 with the auto climate control. Recently the unit seems to have issues that are hard to describe. The display shows the normal fan level bars as it has always done. But the fan itself cuts off and then 1 minute later comes back on. I have adjusted the fan to full speed manually and the same type of operation persists. The rear control continues to operate while the front cuts on and off. Has anyone else had this problem?