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Home >> Lexus >> 2024 >> RX 500h >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (Can Communication System - Circuit Tests (1 Of 3) & Diagnostic Codes) >> CAN COMMUNICATION SYSTEM (for Gasoline Model) >> Bus Buffer ECU Communication Stop Mode [10/2022 - ] >> Description

Bus Buffer 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
Bus Buffer ECU Communication Stop Mode Communication stop for "Remote Engine Starter" 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 - ]
  • Option connector (bus buffer ECU) main line or connector
  • CAN compatible optional devices
  • Main body ECU (multiplex network body ECU)
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