Seat Heater System
WARNING: This page is about a different car, the 2002 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
Verify customer complaint. Perform a visual inspection, checking for open fuses, disconnected or damaged wire harnesses and components. Repair or replace items as necessary and recheck. Trouble shoot seat heater system by symptom and perform associated test. See SEAT HEATER SYSTEM under SYSTEM TESTS.