HDA Malfunction and Limitations

HDA malfunction

When HDA or a related component malfunctions, a warning message, the Master X warning light appears on the instrument cluster. Have your vehicle inspected by an authorized HYUNDAI dealer.

For more information, refer to Driver Assistance System Warnings and Indicators.

Detecting sensors

HDA uses the following sensors:

  • Front view camera

  • Front radar

  • Front corner radar (if equipped)

  • Rear corner radar

For more information, refer to Sensor Information, Forward Collision-Avoidance Assist (FCA) and Blind-Spot Collision-Avoidance Assist (BCA).

  • The driver is responsible for controlling the vehicle for safe driving.

  • Always have your hands on the steering wheel while driving.

  • HDA is a supplemental function that assists the driver in driving the vehicle and is not a complete autonomous driving system. Always check road conditions, and if necessary, take appropriate actions to drive safely.

  • Always have your eyes on the road, and it is the responsibility of the driver to avoid violating traffic laws. The vehicle manufacturer is not responsible for any traffic violation or accidents caused by the driver.

  • HDA may not be able to recognize all traffic situations. HDA may not detect possible collisions due to limitations of the function. Always be aware of the limitations of the function. Obstacles such as vehicle, motorcyclist, bicycle, pedestrian, or unspecified object or structure such as guardrails, tollbooth, etc., that may collide with the vehicle may not be detected.

  • HDA turns off automatically under the following situations:

    • Driving on roads that HDA does not operate, such as a rest area, intersection, junction, etc.

    • The navigation does not operate properly such as when the navigation is being updated or restarted

  • HDA may inadvertently operate or turn off depending on road conditions (navigation information) and surroundings.

  • LFA function may be temporarily disabled when the front view camera cannot detect lanes properly or the hands-off warning is on.

  • You may not hear the warning sound of HDA if the surroundings are noisy.

  • If the vehicle is driven at high speed above a certain speed at a curve, your vehicle may drive to one side or may depart from the driving lane.

  • When you are towing a trailer or another vehicle, turn off HDA for safety reasons. Your vehicle may lose control stability.

  • The hands-off warning message may appear early or late depending on how the steering wheel is held or road conditions. Always have your hands on the steering wheel while driving.

  • For your safety, please read the owner's manual before using the HDA.

  • HDA does not operate when the vehicle is started, or when the detecting sensors or navigation is being initialized.

When driving using Highway Driving Assist Plus, keep in mind the following:

  • Highway Driving Assist Plus is:
    • Not a self-driving system

    • Not a substitute for proper supervision of the driving task

    • Not a crash avoidance or warning system

  • This feature cannot substitute for the driver's judgment of traffic conditions and may not be able to respond appropriately to various events. Always drive carefully by paying attention to traffic conditions, surrounding environmental factors, and road conditions.

  • Relying on this feature may result in a collision and serious injury. Drivers must always be ready to intervene actively by controlling the steering wheel and brakes.

  • Be especially careful when driving under road conditions involving many variables, such as sharp curves, cut-in vehicles, and slow/stopped vehicles ahead.

  • This feature may not work properly or may operate unexpectedly under complex or unspecified driving conditions, such as construction zones, potholes, or black ice.

  • Do not engage in distracting activities while driving, such as using a mobile device. It is always the driver’s responsibility to avoid accidents, injuries, and property damage.

  • The driver's condition may not be identified properly, depending on the circumstances. Make sure to not wear any facial coverings.

  • A sensor or controller failure may not be immediately detected. If this is the case, the feature may not work properly.

HDA limitations

When the detecting sensors cannot detect the surroundings, HDA may not operate properly.

HDA and Highway Lane Change function may not operate properly, or may not operate under the following circumstances. Always pay attention to road and driving conditions while driving:

  • If the operation of Lane Following Assist (LFA) is limited, the operation of Highway Driving Assist and its sub-functions is also limited. For specific limitations of Lane Following Assist (LFA), refer to LKA limitations.

  • If the operation of Smart Cruise Control (SCC) is limited, the operation of Highway Driving Assist and its sub-function is also limited. For details, refer to SCC limitations.

  • For specific limitations of the front-view camera, front radar, front-corner radar, and rear-corner radar sensors, refer to Sensor Limitations, FCA limitations, and BCA limitations.

  • The map information and the actual road is different because the navigation is not updated

  • The map information and the actual road is different because of real-time GPS data or map information error

  • The infotainment system is overloaded by simultaneously performing functions such as route search, voice recognition, etc.

  • GPS signals are blocked in areas such as a tunnel

  • The driver goes off course or the route to the destination is changed or canceled by resetting the navigation

  • The vehicle enters a service station or rest area

  • Android Auto or CarPlay is operating in the infotainment system

  • The navigation cannot detect the current vehicle position (for example, elevated roads including overpass adjacent to general roads or nearby roads exist in a parallel way)

  • White single dotted lane line or road edge cannot be detected

  • The road is temporarily controlled due to construction, etc.

  • There is no structure, such as a median strip, guardrails, etc., on the road

  • There is a changeable lane in the direction of lane change

  • If a trailer, carrier, etc., is installed