
Blind-Spot Collision Warning (BCW) system disabled. Radar blocked
This warning message may appear when :
- One or both of the sensors on the rear bumper is blocked by dirt or snow or
a foreign object.
- Driving in rural areas where the sensor does not detect another vehicle for an
extended period of time.
- When there is inclement weather such as heavy snow or rain.
If any of these conditions occur, the light on the BCW switch and the system will turn off automatically.
When the BCW canceled warning message is displayed in the cluster, check to make sure that the rear bumper is free from any dirt or snow in the areas where the sensor is located. Remove any dirt, snow, or foreign material that could interfere with the radar sensors.
After any dirt or debris is removed, the system should operate normally after about 10 minutes of driving the vehicle.
If the system still does not operate normally have your vehicle inspected by an authorized HYUNDAI dealer.

Check Blind-Spot Collision Warning (BCW) system
If there is a problem with the BCW system, a warning message will appear and the light on the switch will turn off. The system will turn off automatically. Have your vehicle inspected by an authorized HYUNDAI dealer.
Detecting Sensor
Limitations of the SystemHyundai Elantra AD (2016-2020) Service Manual: Rear Center Seat Belt Retractor Components and Components Location
Component Location
1. Rear center seat belt retractor
...
Hyundai Elantra AD (2016-2020) Service Manual: Brake Pedal Repair procedures
Removal
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the crash pad lower panel.
(Refer to Body - "Crash Pad")
3.
Disconnect the stop lamp switch connector (A).
4.
Remove the wiring fixed clip from the brake pedal member.
5.
Remove the bra ...