One problem related to power steering pump has been reported for the 2005 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Toyota Sienna based on all problems reported for the 2005 Sienna.
Less than a year ago my power steering became stiff. Changed pump as it seemed to burn out at 40,000 miles also changed belts. Less than a year later the stiffness is back and the pump and belts are fine. Starting a 33,000 miles and 3 years I have had to change sliding door motor, struts on back door, steering pump,middle seat belts along with other things. I find that this van is not built for the safety of my children and Toyota does nothing about this. I am seeing that a lot of their Sienna seem to have the same problem. It is a 2005 Sienna with 52,000 miles.