Doubtful you'll get hassled, but the chances of them being competent enough to find and fix the problem without a lot of tinkering is pretty slim... I have no faith in dealers to problem shoot "noises" My mom's lexus still makes a faint "squrril in the fan" noise that the dealership techs couldn't even hear... The only difference is that they replaced everything they could think of that would make a "fan" noise in any place, whereas some mitsu techs might say "me ug, me no hear no noise, maybe your car too modded, you fix"