DTC B2439: Headlight LH Circuit; DTC B243A: Headlight RH Circuit [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.
A DTC is stored when the headlight ECU sub-assembly LH or RH receives a light source malfunction signal from its respective headlight unit assembly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from |
|---|---|---|---|---|
| B2439 | Headlight LH Circuit | Headlight ECU sub-assembly LH light source malfunction |
|
HL AutoLeveling |
| B243A | Headlight RH Circuit | Headlight ECU sub-assembly RH light source malfunction |
|
HL AutoLeveling |