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Home >> Hyundai >> 2016 >> Sonata Base >> Repair and Diagnosis >> Brakes >> Traction Control >> Electronic Stability Program (Esp) System (Except HEV) >> Electronic Stability Program (ESP) System >> Repair Procedures >> Repair procedures >> ESP System bleeding

ESP System bleeding

This procedure should be followed to ensure adequate bleeding of air and filling of the ESC unit, brake lines and master cylinder with brake fluid.

  1. Remove the reservoir cap and fill the brake reservoir with brake fluid.
    NOTE: If there is any brake fluid on any painted surface, wash it off immediately.
    When pressure bleeding, do not depress the brake pedal.
    Recommended fluid........ DOT3 or DOT4
  2. Connect a clear plastic tube to the wheel cylinder bleeder plug and insert the other end of the tube into a half filled clear plastic bottle.
  3. Connect the GDS to the data link connector located underneath the dash panel.
  4. Select and operate according to the instructions on the GDS screen.
    NOTE: You must obey the maximum operating time of the ABS motor with the GDS to prevent the motor pump from burning.
    1. Select vehicle name.
    2. Select Anti-Lock Brake system.
    3. Select HCU air bleeding mode.
    Fig 1: Screen Display - GDS
    G10565525Courtesy of HYUNDAI MOTOR AMERICA
    Fig 2: Screen Display - HCU Air Bleeding Mode
    G10565526Courtesy of HYUNDAI MOTOR AMERICA
    Fig 3: Screen Display - HCU Air Bleeding Mode
    G10565527Courtesy of HYUNDAI MOTOR AMERICA
  5. Have someone slowly pump the brake pedal several times, and then apply pressure.
  6. Loosen the right-rear brake bleed screw (A) to allow air to escape from the system. Then tighten the bleed screw securely.

    [Front] 

    Fig 4: Loosening Right-Rear Brake Bleed Screw
    G10565528Courtesy of HYUNDAI MOTOR AMERICA

    [Rear] 

    [General] 

    Fig 5: Identifying Right-Rear Brake Bleed Screw (Rear\General)
    G10565529Courtesy of HYUNDAI MOTOR AMERICA

    [EPB] 

    Fig 6: Identifying Right-Rear Brake Bleed Screw (EPB)
    G10565530Courtesy of HYUNDAI MOTOR AMERICA
  7. Repeat the procedure for wheel in the sequence displayed below until air bubbles no longer appear in the fluid.
    Fig 7: Identifying Wheel Sequence
    G10565531Courtesy of HYUNDAI MOTOR AMERICA
  8. Refill the master cylinder reservoir to MAX (upper) level line.