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Home >> Genesis >> 2021 >> G80 2.5T Advanced, AWD >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Seat Belt System >> Pre-active Seat Belt Unit (PSB) >> Description And Operation >> Main Function
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Main Function

  1. Full Retraction

    Maintains a more safe posture by strongly rewinding the seat belt right before a crash.

    [Operation Condition] 

    1. When a frontal crash is detected by the radar
    2. When sudden braking
    3. When vehicle control function is disabled
  2. Dynamic Support

    Stabilizes the driver from forward and centrifugal force by rewinding the seat belt during sudden braking or turning.

    [Operation Condition] 

    1. When sudden braking (Forward force)
    2. When sudden turning (Centrifugal force)
    3. When sliding in icy road
  3. Haptic Warning

    Warns the driver with seat belt vibration when the vehicle gets out of its lane or any other dangerous situation occurs.

    [Operation Condition] 

    1. When a vehicle ahead is detected very near by the radar
    2. When the vehicle leaving the lane is detected by LDWS
  4. Slack Removal

    If the seat belt isn't completely fastened, it will not work normally in a vehicle crash situation. In this case, this system completely fastens the seat belt by winding the belt slightly when the vehicle speed reaches 40 kph.

  5. Seat Belt Parking

    After the seat belt is released, it returns the seat belt to its original position in 3 seconds by retracting the belt.

    However, this function does not work when the belt has already returned to its original position.

    Pre-active Seat Belt (PSB) Warning Lamp

    The Pre-active Seat Belt (PSB) warning lamp located on the cluster is to inform you that there is a problem with the system.

    When the ignition switch is turned ON, it is normal if the lamp is turned on for 3 seconds. However, there may be a problem if the following conditions occurs.

    1. The lamp is turned on continuously when the ignition switch is in the ON position.
    2. The lamp turns on while driving.
    G15548966Courtesy of HYUNDAI MOTOR AMERICA