System Description [11/2017 - 03/2019]

WARNING: This page is about a different car, the 2019 Lexus RC F, 2018 Lexus RC F, 2017 Lexus RC F, 2016 Lexus RC F, and 2015 Lexus RC F. However, it is still accessible from the selected car via links, so may be relevant.

AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL

General
The automatic headlight beam level control system ensures forward visibility and prevents dazzling of drivers in oncoming and preceding vehicles by controlling the headlight beam level vertically when the weight of passengers and loads has caused the vehicle attitude to change.

Function of Main Components

Component	Outline
Headlight Leveling ECU Assembly	Receives various signals, calculates changes in the vehicle posture, and actuates the headlight leveling motor.
Headlight Leveling Motor	Based on the signals received from the headlight leveling ECU assembly, the motors move the reflectors in the headlight to change the low beam angle.
Rear Height Control Sensor Sub-assembly LH	Transmits a height control sensor signal to the headlight leveling ECU assembly.
Brake Actuator Assembly (Skid Control ECU)	Transmits a speed sensor signal to the headlight leveling ECU assembly.
ECM	Transmits an engine running status signal to the headlight leveling ECU assembly.
Main Body ECU (Multiplex Network Body ECU)	Transmits a headlight status signal.
Combination Meter Assembly	If the system malfunctions, "Headlight System Malfunction Visit Your Dealer" warning message will be displayed on the multi-information display in the combination meter assembly in accordance with the signal from the headlight leveling ECU assembly.