2012 Kia Optima SXFACTORY OEM SERVICE PROCEDURE

SMK System Warning Sound

WARNING: This page is about a different car, the 2013 Kia Sportage and 2012 Kia Sportage. However, it is still accessible from the selected car via links, so may be relevant.
  1. Internal Buzzer control for SMK System warning.
  2. SMK System Warnings conditions of activation are controlled by the SMK unit. When a condition is satisfied, SMK unit sends corresponding warning request to BCM and cluster by CAN.
  3. BCM only operates the Internal Buzzer.
  4. The internal buzzer is controlled by the BCM and Sound duration is controlled by SMK.
  1. Steering Column Not Locked Warning
    1. This warning requires activation of the Internal Buzzer during C_ESCL_Notlocked_Warning = On.
    2. SMK Warning Buzzer Sound Period: 0.6s + 0.06 sec
  2. ID Out Warning1
    1. This warning requires activation of the Internal Buzzer during C_IDOUT_WNG = On.
    2. SMK Warning Buzzer Sound Period: 5s + 0.1 sec
  3. Steering Column Not Unlock Warning
    1. This warning requires activation of the Internal Buzzer during C_ESCL_Notunlocked_Warning = On.
    2. SMK Warning Buzzer Sound Period: 1s + 0.1 sec
  4. SSB Button Warning
    1. This warning requires activation of the Internal Buzzer during C_SSB_Warning = On.
    2. SMK Warning Buzzer Sound Period: 0.6s + 0.06 sec
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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