Circuit Description
WARNING: This page is about a different car, the 2004 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
The telephone ECU assy (Mayday ECU) determines the vehicle operating condition, vehicle position and user requirements, based on the information provided by various component parts. The telephone ECU assy also controls the LEXUS link system. It is located under the under back panel, which is on the right side of the luggage room.