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HOMESERVICE MANUALSKIA2015OPTIMA LIMITEDREPAIR AND DIAGNOSIS (SINGLE PAGE)BRAKESMECHANICAL - HYDRAULICDISC BRAKE SYSTEM - OPTIMA (EXCEPT HEV)BRAKE SYSTEMREPAIR PROCEDURESOPERATION AND LEAKAGE CHECKBRAKE SYSTEM BLEEDING
2015 Kia Optima Limited

Brake System Bleeding

2015 Kia Optima LimitedSECTION Brake System Bleeding
CAUTION:
  • DO NOT reuse the drained fluid.
  • Always use genuine DOT3/DOT4 brake Fluid.

    Using a non-genuine DOT3/DOT4 brake fluid can cause corrosion and decrease the life of the system.

  • Make sure no dirt or other foreign matter is allowed to contaminate the brake fluid.
  • DO NOT spill brake fluid on the vehicle, it may damage the paint; if brake fluid does contact the paint, wash it off immediately with water.
  • The reservoir on the master cylinder must be at the MAX (upper) level mark at the start of bleeding procedure and checked after bleeding each brake caliper. Add fluid as required.
  1. Make sure the brake fluid in the reservoir is at the MAX (upper) level line.
  2. Have someone slowly pump the brake pedal several times, and then apply pressure.
  3. Loosen the right-rear brake bleed screw (A) to allow air to escape from the system. Then tighten the bleed screw securely.

    Front 

    Fig 1: Brake Bleed Screw - Front
    G07383532Courtesy of KIA MOTORS AMERICA, INC.

    Rear 

    Fig 2: Brake Bleed Screw - Rear
    G07383533Courtesy of KIA MOTORS AMERICA, INC.
  4. Repeat the procedure for wheel in the sequence displayed below until air bubbles no longer appear in the fluid.
    Fig 3: Bleeding Sequence
    G07383534Courtesy of KIA MOTORS AMERICA, INC.
  5. Refill the master cylinder reservoir to MAX (upper) level line.
    CAUTION: DO NOT reuse the old brake fluid. Use only new clean brake fluid.
RENDER: 1.0x

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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.