Kia Soul: Brake Bleeding Prcoedure - Brake SystemKia Soul: Brake Bleeding Prcoedure

Kia Soul EV (PS EV) 2015-2020 Service Manual / Brake System / Brake Bleeding Prcoedure

AHB Brake System Bleeding procedure
Do not reuse the drained fluid..
Always use genuine DOT3/DOT4 brake fluid. Using a non-genuine DOT3/DOT4 brake fluid can cause corrosion and decrease the life of the system.
Make sure no dirt or other foreign matter is allowed to prevent contaminating the brake fluid.
Do not spill brake fluid on the vehicle as it may damage the paint. If brake fluid comes in contact with the paint, wash off immediately with water.
When bleeding air, make sure that the brake fluid is at least 10mm above the "MIN" line.
To remove the reservoir tank cap to refill the brake fluid, always close the air shut-off valve of the SST.
Air Bleeding Tool Installation Procedure
To prevent the brake fluid reservoir tank from being damaged and to ensure the safety of workers, set the pressure of the gauge to the standard value before installing the SST.
Before installing the SST on the vehicle, close the air shut-off valve (A) to adjust the pressure gauge to the standard value.

For the safety of workers and correct pressure setting, make sure that the plug (B) is installed correctly.
After connecting an air hose and opening the air shut-off valve (A), adjust the pressure gauge (B) to the standard value.

Standard pressure value:0.3 ~ 0.5MPa (43.5 ~ 72.5psi)

Close the air shut-off valve (A) and remove the plug (B).

For safety of worker, make sure that the air shut offvalve is closed and remove the plug.
Remove the brake reservoir tank cap.
Install the cap (A) of SST (0k585-E8100) on the reservoir tank.

Make sure that the check valve (A) is closed and then connect SST (09580-3D100) (A) to the adapter (B).

Air Bleeding Tool Removal Procedure
To remove the SST (09580-3D100) from the vehicle,close the air shut-off valve (A) first.

After disconnecting the air hose (B), bleed air in the reservoir tank by slowly opening the air shut-off valve (A).

To prevent backflow of brake fluid, be sure to open the air shut-off valve slowly and then bleed air in the reservoir tank.
Remove SST (09580-3D100) and the cap of SST(0k585-E8100) on the reservoir tank.

Install the brake reservoir tank cap.
AHB Brake System Bleeding Step 1 (IBAU ECU OFF)
IBAU filled with brake oil should be used for bleeding.
Disconnect the negative (-) battery terminal to turn off IBAU ECU.
Set the air bleeding tool (SST: 09580-3D100) and the cap of SST (0k585-E8100) to reservoir tank and apply pressure (0.3~0.5MPa (43.5 ~ 72.5psi)) to it.

Initiate air bleeding on all bleed screws in the following sequence until air bubbles no longer appear in the fluid.
PSU IBAU (2 bleed srews) 4 wheels (15 seconds for each)

Perform air bleeding while stepping on the brake pedal and opening bleed screws; then, close bleed screws and release the brake pedal. Perform this procedure 10 times.
Bleed screw sequence : IBAU (2 bleed srews) 4 wheels
Repeat until air bubbles no longer appear in the fluid
Be cautious not to open the bleed screws too much as air may flow into the brake system.
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.
Setting the ECU S/W to air bleeding mode in 30 seconds.
After turning IGN ON with the engine start button, set the front wheels straight forward and the shift lever knob in Parking.
With the VDC switch in the ""OFF"" position, press and release the brake pedal 10 times. Make sure to press the brake pedal more than 40 mm deep and release fully.
Turn off the engine start button, and then restart the engine and turn the VDC switch to the ""ON"" position by pressing down on the VDC OFF switch for 3 sec.
The air bleeding mode is disabled in each of the following conditions:
IGN OFF and shift lever knob in D/R/N
Detecting DTC
Brake fluid level under "MIN"
"VDC off" switch turned off
Use the air bleeding tool (SST: 09580-3D100, 0K585-E8100) and feed oil pressure of 0.3 ~ 0.5MPa (43.5 ~ 72.5psi) into the reservoir.
While pushing the brake pedal halfway, loosen the bleed screws on 4 wheels to release the brake fluid, and then close the bleed screws. Repeat this 10 times and then release the pedal.

Connect the GDS to the data link connector located underneath the dash panel to perform "Fluid Circulation Mode" on GDS.
Fluid Circulation Mode removes air bubbles in the brake fluid and releases into the air by circulating the brake fluid inside the IBAU to the reservoir tank.
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