I am new to the Q5 Forum. I had a 2007 Acura RDX and purchased 2013 Audi Q5 in May. I live in Boston, Massachusetts & the weather just started to get in freezing range. Since this happened I have been hearing a clunking noise from the rear passenger side but when the weather warms up the noise goes away. Just barely have 4500 miles into the car. Anybody have any ideas?