I have the same problem on my 2006 X45. The guys at Team talk were of no help either. If the guys on the MC website can't give any help, then I think we are hosed with either taking it to the dealer or replacing something myself.
I called the dealership and was told that there were so many things it could be, that they would have to have the boat to troubleshoot it. I was thinking of just replacing the transducer, because that is the most likely problem, but what if something else is the problem? Since the display works, I am hard pressed to beleive it would not work to just replace the transducer.
BTW, my water temp guage has never been accurate...it reads just a little less than air temp...always.
Last edited by talltigeguy; 06-18-2010 at 6:49 PM.