I just purchased a 2001 from my local Toyota dealer. After delivery, I discovered the excessive bass problem. When I took it in to have the new key fobs programmed I asked about the excessive bass. They provided me with all the info, TSB AU001-01 and the part no 8620-0W060, an estimate for $428.00 parts, $35.00 labor and said it was out of warranty so it would not be covered. I am 2000 miles and 9 months out of the 3/36 basic warranty. I emailed Toyota to get it covered but just got a generic reply. I have not yet asked the used car dept to share or cover all the cost but that's my next step if I don't get any resolve from Toyota. My feeling is warranty should cover it since this defect existed since new even though the prior owner never pursured the fix. Any suggestions?