my 04 xb has 26,000 miles on it and just recently there is a rattleing sound coming from either the driver side door or the driver side passenger door. It only makes this sound( kind like loose plastic against metal) when i am taking off from a stop or when i come to a stop. ive taken apart both doors thinking there is something loose but cant seem to find anything loose. and now when i lower or raise the drivers window there is some vibration and wont opperate smoothly.if i take into the dealer will they charge me for A: looking for the problem B: fixing the problem, for the sound and window? thanx in advance