hi, i bought an Acura TL that was salvage since i had a really really good deal. it was crashed in the back and now everything is fixed. i had to replace the tail end and the navigation unit along with it. that's it. now it drives and everything but the fan does not turn off. i brought it to the dealer to have it checked and they said that nothing was wrong with it and when they pressed hte "off" button, it turned off. it isn't the case for me and borought it to a diff shop and said they couldn't fix it. all of the wiring was correct and they say that it might be a sensor or something? or something behind the navigation screen? i don't know. can someone help me out thougH?