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Home >> Lexus >> 2017 >> RX 450h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Exterior Lights >> Lighting System (W/ Automatic Headlight Beam Level Control System) (Diagnostic Codes) (2 Of 2) & Circuit Tests) >> Lighting System (W/ Automatic Headlight Beam Level Control System) >> Circuit Tests >> Parking Light/Daytime Running Light Circuit [08/2019 - ] >> Description

Parking Light/Daytime Running Light Circuit [08/2019 - ]: Description

Parking light function: 

  1. When the main body ECU (multiplex network body ECU) receives the light control switch position signal, it sends an illumination request signal to the No. 1 headlight ECU sub-assembly and illuminates the parking lights.

Daytime running light function: 

  1. When the operation conditions of the daytime running lights are met, the main body ECU (multiplex network body ECU) sends an illumination request signal to the No. 1 headlight ECU sub-assembly and illuminates the daytime running lights.