Hyundai Ioniq: LKA System Operation / LKA system activation

Hyundai Ioniq (AE) 2017-2025 Owner's Manual / Driving your vehicle / Lane Keeping Assist (LKA) System / LKA System Operation / LKA system activation

Hyundai Ioniq. LKA system activation

  • To see the LKA system screen on the LCD display in the cluster, select SCC/LKA mode (Hyundai Ioniq. LKA system activation) for cluster type A or ASSIST mode (Hyundai Ioniq. LKA system activation) for cluster type B. For more information, refer to "LCD Display Modes" in chapter 3.
  • When both lane markers are detected and all the conditions to activate the LKA system are satisfied, a green steering wheel indicator will illuminate and the LKA system indicator light will change from white to green. This indicates that the LKA system is in the ENABLED state and the steering wheel will be able to be controlled.

WARNING

The Lane Keeping Assist (LKA) System is a system to prevent the driver from leaving the lane. However, the driver should not solely rely on the system but always check the road conditions when driving.

Hyundai Ioniq. LKA system activation

  • If vehicle speed is over 40 mph (64 km/h) and the system detects lane markers, the color changes from gray to white.
  • If the system detects the left lane marker, the left lane marker color will change from gray to white.
  • If the system detects the right marker line, the right lane marker color will change from gray to white.
  • Both lane markers must be detected for the system to fully activate.
  • If your vehicle speed exceeds 40 mph (64 km/h) and the LKA system button is ON, the system is enabled. If your vehicle departs from the projected lane in front of you, the LKA system operates as follows:

Hyundai Ioniq. LKA system activation

A visual warning appears on the cluster LCD display. Either the left lane marker or the right lane marker in the cluster LCD display will blink depending on which direction the vehicle is veering.

If the steering wheel appears, the system will control the vehicle's steering to prevent the vehicle from crossing the lane marker.

Keep hands on steering wheel

Hyundai Ioniq. LKA system activation

If the driver takes their hands off the steering wheel for several seconds while the LKA system is activated, the system will warn the driver.

Information

If the steering wheel is held very lightly the message may still appear because the LKA system may not recognize that the driver has their hands on the wheel.

WARNING

The warning message may appear late according to road conditions. Therefore, always have your hands on the steering wheel while driving.

Driver's grasp not detected. LKA system will be disabled temporarily

Hyundai Ioniq. LKA system activation

If the driver still does not have their hands on the steering wheel after the message "Keep hands on steering wheel", the system will not control the steering wheel and warn the driver only when the driver crosses the lane markers.

However, if the driver has their hands on the steering wheel again, the system will start controlling the steering wheel.

WARNING

  • The driver is responsible for accurate steering.
  • Turn off the system in below situations.
    - In bad weather
    - In bad road condition
    - When the steering wheel needs to be controlled by the driver frequently.

Information

  • Even though the steering is assisted by the system, the driver can still steer to control the steering wheel.
  • The steering wheel may feel heavier when the steering wheel is assisted by the system than when it is not.

    LKA System Operation

    To activate/deactivate the LKA system: With the Engine Start/Stop button in the ON position, press the LKA system button located on the instrument panel on the left hand side of the steering wheel...

    Warning Light and Message

    Check Lane Keeping Assist (LKA) system If there is a problem with the system a message will appear for a few seconds. If the problem continues the LKA system failure indicator will illuminate...

    Other information:

    Hyundai Ioniq (AE) 2017-2025 Service Manual: Specifications


    S..

    Hyundai Ioniq (AE) 2017-2025 Service Manual: Troubleshooting


    Trouble Symptom ChartsTrouble Symptom 1Trouble Symptom 2 Trouble symptom Probable cause Remedy The set vehicle speed varies greatly upward or downward"Surging" (repeated alternating acceleration and deceleration) occurs after settingMalfunction of the vehicle speed sensor circuitRepair the vehicle speed sensor system, or replace the partMalfunction of ECMCheck input and output signals at ECMTrouble Symptom 3 Trouble symptom Probable cause Remedy The CC system is not canceled when the brake pedal is depressedDamaged or disconnected wiring of the brake pedal switchRepair the harness or replace the brake pedal switchMalfunction of the ECM signalsCheck input and output signals at ECMTrouble Symptom 4 Trouble symptom Probable cause Remedy The CC system is not canceled when the shift lever is moved to the "N" position (It is canceled, however, when the brake pedal is depressed)Damaged or disconnected wiring of inhibitor switch input circuitRepair the harness or repair or replace the inhibitor switchImproper adjustment of inhibitor switchMalfunction of the ECM signalsCheck input and output signals at ECMTrouble Symptom 5 Trouble symptom Probable cause Remedy Cannot decelerate (coast) by using the "SET/–" switchTemporary damaged or disconnected wiring of "SET/–" switch input circuitRepair the harness or replace the "SET/–" switchMalfunction of the ECM signalsCheck input and output signals at ECMTrouble Symptom 6 Trouble symptom Probable cause Remedy Cannot accelerate or resume speed by using the "RES/+" switchDamaged or disconnected wiring, short circuit or "RES/+" switch input circuitRepair the harness or replace the "RES/+" switchMalfunction of the ECM signalsCheck input and output signals at ECMTrouble Symptom 7 Trouble symptom Probable cause Remedy CC system can be set while driving at a vehicle speed of less than 40km/h (25mph), or there is no automatic cancellation at that speedMalfunction of the vehicle-speed sensor circuitRepair the vehicle speed sensor system, or replace the partMalfunction of the ECM signalsCheck input and output signals at ECMTrouble Symptom 8 Trouble symptom Probable cause Remedy The cruise main switch indicator lamp does not illuminate (But CC system is normal)Damaged or disconnected bulb of cruise main switch indicator lampRepair the harness or replace the part...

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