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Home >> Hyundai >> 2017 >> Sonata Base >> Repair and Diagnosis >> Brakes >> Traction Control >> Electronic Stability Program (Esp) System (Except HEV) >> 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: Scantool Display - Vehicle S/W Management
    G11987812Courtesy of HYUNDAI MOTOR AMERICA
    Fig 2: Scantool Display - HCU Air Bleeding Mode
    G11987813Courtesy of HYUNDAI MOTOR AMERICA
    Fig 3: Scantool Display - HCU Air Bleeding Mode (Time)
    G11987814Courtesy 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: Locating Right-Rear Brake Bleed Screw - Front
    G11987815Courtesy of HYUNDAI MOTOR AMERICA

    [Rear] 

    [General] 

    Fig 5: Locating Right-Rear Brake Bleed Screw - Rear (General)
    G11987816Courtesy of HYUNDAI MOTOR AMERICA

    [EPB] 

    Fig 6: Locating Right-Rear Brake Bleed Screw - Rear (EPB)
    G11987817Courtesy 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: Brake Bleeding Sequence
    G11987818Courtesy of HYUNDAI MOTOR AMERICA
  8. Refill the master cylinder reservoir to MAX (upper) level line.