One problem related to steering wheel vibrate has 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 wheel presents vibration and strange noise when fully turned to any side. Complained to Toyota during the extended warranty and service was denied, stating that is was functional and not broken. Now (Feb 2012, extended warranty expired) it is really getting worse and worse. Would Toyota wait for the part to fail and someone to be killed to address the problem? there is a premature wear in the steering column and steering system.