For the past few weeks I have had some issues with the fan speeds on the climate control on my '03 RR. At times it will only run on a low speed even turned to full. Other times it will only run at high speed even turned down. The other day it would only run on high speed then would not turn off at all even when I turned off the vehicle and removed the key. I finally had to pull the fuse to turn it off. Any ideas? Thanks.