Hyundai Ioniq: Blind-spot Collision Warning (BCW) system / Limitations of the system

Hyundai Ioniq (AE) 2017-2023 Owner's Manual / Driving your vehicle / Blind-spot Collision Warning (BCW) system / Limitations of the system

The driver must be cautious in the below situations, because the system may not detect other vehicles or objects in certain circumstances.

  • When a trailer or carrier is installed.
  • The vehicle drives in inclement weather such as heavy rain or snow.
  • The sensor is polluted with rain, snow, mud, etc.
  • The rear bumper where the sensor is located is covered with a foreign object such as a bumper sticker, a bumper guard, a bike rack, etc.
  • The rear bumper is damaged, or the sensor is out of the original default position.
  • The vehicle height gets lower or higher due to heavy loading in the luggage compartment, abnormal tire pressure, etc.
  • When the temperature near the rear bumper area is high or low.
  • When the sensors are blocked by other vehicles, walls or parking-lot pillars.
  • The vehicle drives on a curved road or through a tollgate.
  • The vehicle is driven near areas containing metal substances such as a construction zone, railroad, etc.
  • There is a fixed object near the vehicle, such as a guardrail, person, animal, etc.
  • While going down or up a steep road where the height of the lane is different.
  • When driving through a narrow road with many trees or bushes.
  • When driving on wet surfaces.
  • When driving through a large area with few vehicles or structures around, such as a desert, rural area, etc.
  • A big vehicle is near such as a bus or truck.
  • When other vehicles are close to your vehicle.
  • When the other vehicle approaches very close.
  • When the detected vehicle also moves back, as your vehicle drives back.
  • While changing lanes.
  • The vehicle is turning left or right at a crossroad.
  • If the vehicle has started at the same time as the vehicle next to you and has accelerated.
  • When the other vehicle passes at a very fast speed.
  • When the vehicle in the next lane moves two lanes away from you OR when the vehicle two lanes away moves to the next lane to you.
  • A motorcycle or bicycle is near.
  • A flat trailer is near.
  • If there are small objects in the detecting area such as a shopping cart or a baby stroller.
  • If there is a low height vehicle such as a sports car.

Non-operating condition

The BCW indicator on the outer side view mirror may not illuminate properly when:

  • The outer side view mirror housing is damaged.
  • The mirror is covered with dirt, snow, or debris.
  • The window is covered with dirt, snow, or debris.
  • The window is tinted.


This device complies with Part 15 of the FCC rules.

Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and

2. This device must accept any interference received, including interference that may cause undesired operation.

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