Hyundai Kona: Blind-Spot Collision Warning (BCW) / Description and operation

Description

BCW is a system that measures the relative speed and distance from the following vehicles by using two electromagnetic wave radar sensors attached to the rear bumper, and detects any vehicle within the blind spot zone and gives off alarm (visual and auditory).
Blind-Spot Collision Warning Indicator (BCW) : Senses other vehicles in the BCW zone and turns on the BCW warning lamp for the driver.
Warning lamp starts blinking when the driver turns on the turn signal lamp to enter the lane where another vehicle is driving.
Lane Change Assist (LCA) : Senses other vehicles approaching at high speed in the BCW zone and turns on the BCW warning lamp for the driver.
Warning lamp starts blinking when the driver turns on the turn signal lamp without recognizing any sudden approaching vehicle from that direction.
Rear Cross Traffic Alert (RCTA) : When the vehicle is on the reverse, the RCTA generates alarm to alert another vehicle approaching from the rear and side.
System Operating Mode

1.
When starting the engine with the switch off, OFF mode is on.
2.
When pressing ON switch in OFF mode, Passive mode is on.
3.
If starting the engine with the switch ON, Passive mode is on.
※ When IGN is ON, the switch is in the initial state : The last position is kept.
If IGN OFF → ON with the switch ON, the switch is ON.
If IGN OFF → ON with the switch OFF, the switch is OFF.
4.
If you start the engine with BCW switch ON, or if you turn on the BCW with IGN OFF, the warning lamp of the door mirror keeps blinking for 2 to 3 seconds.
This is to inform the driver that the BCW system is ready. (provided that if the system is in Fail mode, there is no blinking.)
5.
If the activation conditions (speed and curvature radius) are met while driving, Active mode is on (warning issued).
6.
If the activation conditions (speed and curvature radius) are not met while driving, Passive mode is on (warning removed).
7.
If BCW & LCA operation fails in any mode, Fail mode is on.
8.
If BCW & LCA operation operates normally in Fail mode, OFF mode is on.
9.
If pressing OFF switch while BCW & LCA function is operating (Active/Passive), OFF mode is on.
Warning Condition
1.
Warning zone

2.
Conditions for BCW warning ON
    Components and components location
    Components 1. Blind-Spot Collision Warning (BCW) Unit 2. BCW switch 3. Speaker 4. BCW warning lamp 5. Cluster ...

    Repair procedures
    Diagnosis With GDS 1. BCW system defects can be quickly diagnosed with the GDS. GDS operates actuator quickly to monitor, input/output value and self di ...

    Other information:

    Hyundai Kona (OS) 2018-2020 Owners Manual: Hazard warning flasher
    The hazard warning flasher serves as a warning to other drivers to exercise extreme caution when approaching, overtaking, or passing your vehicle. It should be used whenever emergency repairs are being made or when the vehicle is stopped near the edge of a roadway. To turn the hazard warning flas ...

    Hyundai Kona (OS) 2018-2020 Service Manual: Repair procedures
    Replacement 1. Disconnect the negative (-) battery terminal. 2. Remove the crash pad lower panel. (Refer to Body - "Crash Pad") 3. Remove the steering column uppe ...

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