2012 Kia Optima SXFACTORY OEM SERVICE PROCEDURE

Warning Control

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. The Warning function offers the following features
    1. Seat Belt Warning
    2. Seat Belt Reminder
    3. Over Speed Warning
    4. Key Reminder Warning
    5. Parking Brake Warning
    6. RKE Key Teaching sound
    7. SMK System Warning
    8. RAPS Warning
    9. Rheostat Detent Warning
  2. Buzzer Operation
    1. For Warning Sound Control Function, two types of Buzzers are used. One is Internal Buzzer, and it is located in BCM. The other is External Buzzer, and it is located in SMK.
    Fig 1: Buzzer Sound Signal Chart
    G07426842Courtesy of KIA MOTORS AMERICA, INC.
    CHARACTERISTIC FUNCTION CHART

    Name Characteristics
    Internal Buzzer Sound frequency T1 Hz
    Internal Buzzer Sound Signal Duty Ratio 50%
    Internal Buzzer Sound Period T2 sec + 5% sec
    Internal Buzzer Sound duration T3 sec + 5% sec
  3. Priority of Warning Buzzer Condition
    1. If there are multiple warning conditions simultaneously, the warning shall activate the warning based on the pre-defined priority: (1st is the highest priority)
    WARNING BUZZER CONDITION CHART

    Priority Name Control Logic Internal Buzzer Control
    1 Diagnostic sound BCM BCM
    2 Seat Belt warning/Seat Belt Reminder
    3 Over Speed Warning CLU
    4 Key Reminder (Operated) warning BCM
    5 Parking Brake Warning
    6 Steering Column Not Locked Warning SMK
    7 ID Out Warning
    8 Steering Column Not Unlocked Warning
    9 SSB Button Warning
    10 RKE Key Teaching sound BCM
    11 Rheostat Detent Warning CLU
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:

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

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