HIGH-MOUNT BRAKE LIGHT

id091800012000


Purpose

•  The high-mount brake light signals vehicles to the rear that the vehicle is decelerated or stopping.

Function

•  The high-mount brake light turns on in conjunction with the operation of the brake switch.

Structure/Construction

•  The high-mount brake light is positioned on the rear spoiler.
•  LEDs have been adopted for the high-mount brake light.
Note
•  Fogging or condensation on the inside of the high-mount brake light may occur, however, it is a natural phenomenon occurring as a result of a temperature difference between the interior and exterior of the high-mount brake light and it does not affect the light performance.
•  Fogging or condensation occurring as a natural phenomenon will dissipate when the temperature inside the high-mount brake light rises after the high-mount brake light is turned on and a period of time has elapsed.
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Operation


Operation due to brake pedal operation

1.  When the brake pedal is depressed, the brake switch (No.1 signal) turns on (1).

2.  When the brake switch (No.1 signal) turns on, the brake light unit detects (2) a brake switch (No.1 signal) on signal.

3.  When the brake light unit detects a brake switch (No.1 signal) on signal, it turns on (3) the high-mount brake light.

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Operation due to operation request signal from rear body control module (RBCM)

Note
•  For the operation conditions, refer to the followings:
―  Advanced smart city brake support (advanced SCBS) (See ADVANCED SMART CITY BRAKE SUPPORT (ADVANCED SCBS).)
―  Smart city brake support [forward] (SCBS F) (See SMART CITY BRAKE SUPPORT [FORWARD] (SCBS F).)
―  Smart city brake support [reverse] (SCBS R) (See SMART CITY BRAKE SUPPORT [REVERSE] (SCBS R).)
―  Smart brake support (SBS) (See SMART BRAKE SUPPORT (SBS).)

1.  When all the operation conditions are met, the rear body control module (RBCM) turns the transistor on (1) in the rear body control module (RBCM).

2.  When the transistor in the rear body control module (RBCM) turns on, the transistor A in the brake light unit turns on (2).

3.  When the transistor A in the brake light unit turns on, the transistor B in the brake light unit turns on (3).

4.  When the transistor B in the brake light unit turns on, the high-mount brake light turns on (4).

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Fail-safe

•  Not applicable