Circuit Description
WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
The Steering Pad Switch is built into the steering wheel assembly.
The steering pad switch is connected to each ECU with the multiplex communication circuit.
It sends signals to the radio and player, Combination meter, ECM, TEL ECU, the Navigation ECU and others.