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Home >> Lexus >> 2018 >> RX 350 Base, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Exterior Lights >> Lighting System (W/ Automatic Headlight Beam Level Control System) - Diagnostic Codes & Circuit Tests >> LIGHTING SYSTEM (w/ Automatic Headlight Beam Level Control System) >> Front Side Marker Light Circuit [08/2019 - ] >> Description
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Front Side Marker Light Circuit [08/2019 - ]: Description

When the light control switch is in the tail or head position, the main body ECU (multiplex network body ECU) sends an illumination request signal to the No. 1 headlight ECU sub-assembly to illuminate the front side marker lights.