2013 Hyundai Equus SignatureFACTORY OEM SERVICE PROCEDURE

Warning Function Control

The Warning function includes the sub functions.

  • Buzzer Warning
  • Indicator Warning
  • External Buzzer Warning for smart key function
  • Smart key Lamp Warning
  • ESCL System Indicator Warning
  • Trunk open close flashing warning
    Fig 1: Warning Function Control - System Diagram
    G08831348Courtesy of HYUNDAI MOTOR AMERICA

The Buzzer warning control includes the features.

  • Seat belt warning for driver side and assist side.
  • Overspeed warning in case of more than 120km/h for some of the Middle East countries.
  • Key operated warning in case of key inserted and drive door open.
  • IPM Internal buzzer priority: 1st has the highest priority.
  • 1st: Diagnostic sound (provided to test the Buzzer by way of Diagnostic tool)
  • 2nd: Seat Belt warning
  • 3rd: Overspeed warning
  • 4th: Key operated warning
  • 5th: Parking Brake warning
  • 6th: "ESCL not blocked" warning (SMK option only)
  • 7th: Vehicle not P warning (SMK option only)
  • 8th: Key learning sound with High SCAN tool, non SMK option only
  • 9th: Key learning sound with Code Saving tool, non SMK option only
  • 10th: Warnings for SMK systems (4 warnings - SMK option only)
  • 11th: EPB Alarm warning
  1. Seat Belt Warning FunctionΒ 

    The driver side indicator in the Cluster is activated by 'Driver Seat Belt Indicator Status' CAN signal and the assistant side indicator is activated by the IPM output 'Assist Seat Belt Indicator'.

    Seat Belt Warning Sound:

    In case of Driver side 6sec Indicator, the cluster module operates it after receiving 'Driver Seat Belt Indicator Status' from the IPM. So if the IPM sends 'Driver Seat Belt Indicator Status = blinking' over 6sec then the IPM sounds buzzer warning one more time.

    Frequency: 800 Hz

    Sound period: T2 = 1sec

    Sound duration: T1 = 6sec

    Assistant Seat Belt Indicator:

    Duty: 50%

    Period: T2 = 1sec

    Duration: T1 = 6sec

    Fig 2: Assistant Seat Belt Indicator Blinking Pattern
    G08831349Courtesy of HYUNDAI MOTOR AMERICA

    Driver Seat Belt IND and Buzzer Sound Logic Condition

    1. While IGN1 On status if IPM detects Seat Belt transition UNFASTEN β†’ FASTEN, BUZZER SOUND stops immediately but DRIVER SEAT BELT IND continues working for the remained time.
    2. While IGN1 ON status if there is a Seat Belt transition FASTEN β†’ UNFASTEN, DRIVER SEAT BELT IND and BUZZER SOUND are always activated for one period.
    3. If IGN1 is turned OFF during SEAT BELT WARNING, the DRIVER SEAT BELT IND and BUZZER SOUND stops immediately.
    4. If IPM detects IGN ON signal regardless of Seat Belt status, DRIVER SEAT BELT IND should be triggered for defined timing for IND check but Buzzer SOUND should be played only in case of unfastened Seat Belt.
    NOTE:
    • Seat belt warning buzzer sound is optional while driver seat belt warning indicator is always present in all software variant.
    • The in-circuited magnetic buzzer sound is used for seat belt warning.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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