Check Bus 3 Line [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.

Symptom	Trouble Area
There are ECUs or sensors that display a communication stop on the bus diagnostic screen. Or, there are ECUs or sensors that display communication stop history on the "Detail" screen.	CAN main bus line, CAN branch line or connector Central gateway ECU (network gateway ECU) Radio and display receiver assembly DCM (telematics transceiver) (w/ Telematics Transceiver) Combination meter assembly Stereo component equalizer assembly Inner rear view mirror assembly (w/ Digital Inner Mirror System) Driver monitor ECU assembly (w/ Driver Monitor Camera System) No. 13 global CAN junction connector

Symptom

Trouble Area

There are ECUs or sensors that display a communication stop on the bus diagnostic screen. Or, there are ECUs or sensors that display communication stop history on the "Detail" screen.

CAN main bus line, CAN branch line or connector
Central gateway ECU (network gateway ECU)
Radio and display receiver assembly
DCM (telematics transceiver)
(w/ Telematics Transceiver)
Combination meter assembly
Stereo component equalizer assembly
Inner rear view mirror assembly
(w/ Digital Inner Mirror System)
Driver monitor ECU assembly
(w/ Driver Monitor Camera System)
No. 13 global CAN junction connector