AHB Brake System Bleeding Step 2 (IBAU ECU ON)

WARNING: This page is about a different variant/trim than selected.

Connect the negative (-) battery terminal to turn on IBAU ECU.
Be careful of air that comes out of the brake line when opening the bleed screws, carefully open each bleed screw.
NOTE: Using KDS/GDS, set the ECU S/W to air bleeding mode for 30 seconds.
1. Using KDS/GDS, set the ECU S/W to air bleeding mode for 30 seconds.
2. Press and release the brake pedal 10 times while pushing and holding the "VDC OFF" switch. Make sure to press the brake pedal down more than 40 mm of travel and release fully with no brake pedal application.
3. Turn Ignition "OFF"; then, turn vehicle "ON" ("READY" mode) and turn "ON" the "VDC OFF" switch.
The air bleeding mode is disabled in each of the following conditions.
1. Ignition "OFF" and shift lever in D/R/N.
2. Active, History or Pending DTC.
3. Brake fluid level is under "MIN" line.
4. "VDC OFF" switch turned off.
Using the air bleeding tools (09580-3D100 and 0K585-E8100), feed oil pressure 0.3 ~ 0.5MPa (43.5 ~ 72.5psi) into the brake fluid reservoir. Loosen the bleed screws on all 4 wheels; then, initiate air bleeding procedure and close them while depressing the brake pedal half stroke continuously. Perform 10 times; then, release the brake pedal fully.

Fig 1: Air Bleeding Sequence
Courtesy of KIA MOTORS AMERICA, INC.
Connect the KDS/GDS to the data link connector located underneath the dash panel and perform "Fluid Circulation Mode".
Fluid Circulation Mode is used to remove any air that may be inside the AHB and in the brake system.