2002 Toyota PriusEnlarge Photo
Per Toyota’s documentation, if the Prius’ steering wheel it turned to full lock – turned as far as it will go – repeatedly, the nuts holding the pinion shaft in the steering gear box may become loose. If the car is driven in this condition for extended periods of time, the driver will slowly realize that it is becoming more and more difficult to turn the wheels to the left.
To rectify the situation, Toyota is installing improved nuts at no charge to the customer. Toyota is sending out letters to notify known owners of this defect, beginning in July 2011.