At a glance
What can fail
Transistors inside the inverter module may have weak solder joints. During hard driving, heat from high electrical current can damage these transistors, causing multiple warning lights to appear on your dashboard.
What the fix does
Toyota dealers will check your inverter's production number and replace the module at no cost if it contains the defective transistors.
Summarized — see the official notice for exact wording, dates, and contacts.