No,
at least I dont believe so... the fan never came on...and it is functional, as it comes on when I turn the esc on.
I just went out about an hour ago and ran it hard through the grass and up and down the street, hard starts and stops...everything was fine, no issues.
Only thing I can think of, is it was really humid last night, to the point where there was condensation on the inside of the truck bodies, on my tx screen, everywhere.
Wonder if that had something to do with it.