AHB Brake System Bleeding Step 2 (IBAU ECU ON)

Connect the negative (-) battery terminal to turn on IBAU ECU.
Set the ECU S/W to air bleeding mode on the brake system.
NOTE: Setting the ECU S/W to air bleeding mode - Process 2 and 3 - should be done in 30 seconds
1. Before setting air bleeding mode, make sure to set the front wheels straight forward and the shift lever knob in Parking.
2. Keep pushing the VDC OFF button and in about 3 seconds ESC function will be fully deactivated. Then press and release the brake pedal 10 times while pushing the VDC OFF switch. Make sure to press the brake pedal more than 40mm and release it fully without any step on.
3. Turn off the engine start button while keep pushing the VDC OFF switch. then, start the engine and push VDC OFF switch for 3 seconds to fully deactivate VDC function. Air Bleeding mode is set if all the ABS, VDC and Brake warning lamps turn on
The air bleeding mode is deceased in each following condition.
1. IGN OFF and shift lever knob in D/R/N
2. Detecting DTC
3. Brake fluid level is under "MIN".
4. Turn off the "VDC off" switch.
Use the air bleeding tool (SST: 09580-3D100, 0K585-E8100) and feed oil pressure 0.3 ~ 0.5MPa (43.5 ~ 72.5psi) into the reservoir. Loosen the bleed screws on 4 wheels; then, initiate air bleeding and close them while depressing the brake pedal half stroke continuously. Perform it 10 times; then, release the brake pedal.
Information
- If brake fluid stops flowing out while breeding, then release and press the brake pedal to reactivate AHB.
Fig 1: Loosening Bleed Screws On Wheels
Courtesy of HYUNDAI MOTOR AMERICA
Connect the GDS to the data link connector located underneath the dash panel and perform "Fluid Circulation Mode" on GDS.
Fluid Circulation Mode is to remove air bubble in the brake fluid, which is released into the air while circulating the brake fluid inside the IBAU to the reservoir tank.