 Off the lot, the rear AC did not work.  Then the driver door was replaced as part of the recall (note that we had had problems with the door, but were told repeatedly that nothing was wrong).  At 2 years with the Sienna, noted a clunking sound when turning.  Toyota service department found no problem.  Clunking persisted for the next 2 years.  Now, have had to replace the rack ($1200).  No more clunking, although service department states that the two were not related.