Two problems related to steering linkages have been reported for the 2004 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Toyota Sienna based on all problems reported for the 2004 Sienna.
Steering is not smooth. The wheel will not return to straight forward after a turn. This defect has become progressively worse and now has reached a dangerous level.
Vehicle has suddenly become very hard to steer. Much force is required to turn wheels and cornering is very "jerky". The dealer advises a new steering shaft assembly is required. This is not considered warranty work. I can not fathom how malfunctioning of the steering assemble after three years is not a manufacturer defect.