DTC B15A8-04: DCM System Internal Failure [10/2019 - ]: Description

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, 2021 Lexus ES 300h, and 2020 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.

This DTC is stored when an internal circuit malfunction is detected by the DCM (telematics transceiver) self check.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
B15A8-04	DCM System Internal Failure	DCM (telematics transceiver) internal malfunction	DCM (telematics transceiver)