The official notice
Defect
ON CERTAIN PASSENGER VEHICLES EQUIPPED WITH A FRONT PASSENGER POWER SEAT, WHEN INSTALLING CERTAIN REAR-FACING INFANT CHILD SEAT BASES ONTO THE SEAT WITH AN EXCESSIVELY HIGH SEATBELT TENSION, IT MAY BE POSSIBLE TO UNSEAT A COMPONENT CALLED THE BUCKLE STATUS SWITCH FROM THE SEAT BELT BUCKLE.
Safety Risk
IF THE SWITCH BECOMES UNSEATED, THE FRONT PASSENGER OCCUPANT CLASSIFICATION SYSTEM MAY MISTAKE THE REAR-FACING CHILD RESTRAINT FOR AN UNBELTED ADULT OCCUPANT, AND MAY NOT SUPPRESS THE DEPLOYMENT OF THE FRONT PASSENGER AIRBAG.
Remedy
DEALERS WILL REPLACE THE FRONT PASSENGER SEATBELT BUCKLE STATUS SWITCH. THIS SAFETY IMPROVEMENT CAMPAIGN (SSC 40M) BEGAN ON DECEMBER 20, 2004. OWNERS SHOULD CONTACT TOYOTA AT 1-800-331-4331 OR LEXUS AT 1-800-255-3987..