Pattern Select Switch Eco Mode Circuit [10/2023 - ]: Description
WARNING: This page is about a different car, the 2024 Lexus LS 500h. However, it is still accessible from the selected car via links, so may be relevant.
When the ECO mode switch (satellite switch set) is operated to the ECO mode side, the ECO mode signal is sent to the air conditioning amplifier assembly, and the power save mode of the heater and air conditioning system is activated.