The official notice
Defect
VEHICLE DESCRIPTION: SPORT UTILITY ELECTRIC VEHICLES. THE FRONT DISC BRAKE ROTOR, WHEN EQUIPPED WITH STEEL WHEELS, CAN DEVELOP STRESS FRACTURES IF THE LUG NUTS ARE TIGHTENED WITH EXCESSIVE TORQUE.
Safety Risk
THE DISC ROTOR COULD BREAK (WHERE IT MOUNTS TO THE WHEEL), RESULTING IN A LOSS OF BRAKING ACTION ON THAT WHEEL, INCREASING THE RISK OF A CRASH.
Remedy
DEALERS WILL REPLACE THE DISC BRAKE ROTORS. IF THE VEHICLE IS EQUIPPED WITH STEEL WHEELS, TOYOTA WILL REPLACE THE FRONT DISC BRAKE ROTORS AND STEEL WHEELS WITH NEW DISC BRAKE ROTORS AND NEW ALUMINUM WHEELS. IN ADDITION A CAUTION LABEL THAT READS, "USE NEW GENUINE TOYOTA ALUMINUM WHEELS." WILL BE AFFIXED. VEHICLES ALREADY EQUIPPED WITH ALUMINUM WHEELS WILL ONLY REQUIRE CAUTION LABEL INSTALLATION.