Bleeding of Brake System

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.
   CAUTION: If there is any brake fluid on any painted surface, wash it off immediately.
   NOTE: 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.
   CAUTION: 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: Selecting HCU Air Bleeding Mode

      Courtesy of HYUNDAI MOTOR AMERICA
   4. Press "OK" to operate motor pump and solenoid valve.
      Fig 2: Display - Operating Motor Pump And Solenoid Valve

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   5. Wait 60 sec. before operating the air bleeding.

      (If not, you may damage the motor.)

      Fig 3: Display - Operating Air Bleeding

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   6. Perform the air bleeding.
      Fig 4: Display - Performing Air Bleeding

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5. Pump the brake pedal several times, and then loosen the bleeder screw until fluid starts to run out without bubbles. Then close the bleeder screw (A).

   Front 

   Fig 5: Front Disk Bleeder Screw

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   Rear Disk Brake 

   Fig 6: Rear Disk Bleeder Screw

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   Rear Drum Brake 

   Fig 7: Rear Drum Bleeder Screw

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6. Repeat step  5 until there are no more bubbles in the fluid for each wheel using the chart below for the order of bleeding process.
   Fig 8: Bleeding Process Order Chart

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7. Tighten the bleeder screw.

   Bleed screw tightening torque: 

   6.9 ~ 12.7 N.m (0.7 ~ 1.3 kgf.m, 5.1 ~ 9.4 lb-ft)