I have an AUL warranty that will cover this fix which is expected to be roughly $2000,audio head unit cooling fan rattles randomly, bad noise. They have to tear into the dash and pull out the defective audio unit and replace it. Most of the cost is labor - this is all due to a $10 fan with a defective bearing. The Clublexus forums mention this often so it is a genuine manufacturing defect affecting a lot of people and not just my bad luck on an individual car. Otherwise I absolutely adore the car. The previous owner may have sold it to get out from under this problem. Fortunately for me I bought a warranty which the local Lexus dealer told me is valid.