Bleeding of Brake System

This procedure should be followed to ensure adequate bleeding of air and filling of the ABS 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 bur
   1. Select vehicle name.
   2. Select Anti-Lock Brake system.
   3. Select air bleeding mode.
      Fig 1: Display - HCU Air Bleeding Mode

      Courtesy of HYUNDAI MOTOR CO.
   4. Press "OK" to operate motor pump and solenoid valve.
      Fig 2: Display - HCU Air Bleeding Mode (Motor Pump And Solenoid Valve)

      Courtesy of HYUNDAI MOTOR CO.
   5. Wait 60 sec. before operating the air bleeding. (If not, you may damage the motor.)
      Fig 3: Display - ABS Air Bleeding Mode

      Courtesy of HYUNDAI MOTOR CO.
   6. Perform the air bleeding.
      Fig 4: Display - ABS Air Bleeding Mode Completion

      Courtesy of HYUNDAI MOTOR CO.
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).
   Fig 5: Identifying Bleeder Screw

   Courtesy of HYUNDAI MOTOR CO.
6. Repeat step  5 until there are no more bubbles in the fluid for each wheel.
   Fig 6: Identifying Bleeding Sequence

   Courtesy of HYUNDAI MOTOR CO.
7. Tighten the bleeder screw.

   Bleed screw tightening torque: 

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