DTC B124B: Automatic High Beam System [07/2020 - ]: Description

This DTC is stored when the main body ECU (multiplex network body ECU) detects malfunctions in the automatic high beam system.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
B124B	Automatic High Beam System	Malfunction in automatic high beam system (Detected for 2 seconds or more)	Front camera system Dynamic radar cruise control system Lane control system Road sign assist system* Front radar sensor system Pre-collision system Hybrid control system Electronically controlled brake system CAN communication system Forward recognition camera Main body ECU (multiplex network body ECU)