DTC U0242: Lost Communication With Headlamp Control Module "B" [03/2019 - ]: Description
WARNING: This page is about a different car, the 2024 Lexus RC F, 2023 Lexus RC F, 2022 Lexus RC F, 2021 Lexus RC F, and 2020 Lexus RC F. However, it is still accessible from the selected car via links, so may be relevant.
The headlight ECU sub-assembly LH stores this DTC when the headlight ECU sub-assembly RH detects an internal malfunction or if a communication malfunction occurs between headlight ECU sub-assembly LH and headlight ECU sub-assembly RH for 10 seconds or more.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from |
|---|---|---|---|---|
| U0242 | Lost Communication With Headlamp Control Module "B" | Either of the following conditions is met:
|
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HL AutoLeveling |