Main Body ECU Communication Stop Mode [10/2022 - ]: Description

WARNING: This page is about a different car, the 2025 Lexus RX 350, 2024 Lexus RX 350, and 2023 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.

Detection Item	Symptom	Trouble Area
Main Body ECU Communication Stop Mode	Communication stop for "Main Body" is indicated on the "Communication Bus Check" screen of the GTS. Refer to DIAGNOSIS SYSTEM [10/2022 - 08/2023] , or refer to DIAGNOSIS SYSTEM [08/2023 - 10/2024] , or refer to DIAGNOSIS SYSTEM [10/2024 - ]	Main body ECU (multiplex network body ECU) main line or connector Power source circuit of main body ECU (multiplex network body ECU) or power distribution box assembly Main body ECU (multiplex network body ECU) or power distribution box assembly ground circuit Main body ECU (multiplex network body ECU) or power distribution box assembly