One problem related to power steering fluid has been reported for the 2004 Toyota Avalon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Toyota Avalon based on all problems reported for the 2004 Avalon.
Steering became difficult. Vehicle would not return to straight forward direction after a turn. Force was required to bring vehicle back to straight path. Problem was caused by internal leaking of steering fluid. Dealer replaced steering rack. Power steering lines had to be replaced due to rusting.