Dealers will replace -- at no cost to customers -- both rear suspension arm assemblies with new ones. They will also apply an epoxy to prevent future arm adjustment during vehicle service.
In the earlier action, if the nuts for adjusting rear wheel alignment were improperly tightened when an alignment was performed, rust could form on suspension arm threads. If this occurs, and if the condition is not identified and remedied during servicing or repair under the existing remedy procedure, the threads can wear over time, causing the arm to separate, which could result in a loss of vehicle control.
What to do
Toyota will notify all known owners of the involved vehicles by first class mail.
Owners with questions may contact Toyota customer service at 1-800-331-4331 or Lexus customer service at 1-800-255-3987.