Hyundai Kona: Brake System / Brake bleeding prcoedures

Hyundai Kona (OS) 2018-2025 Service Manual / Brake System / Brake bleeding prcoedures

Brake Bleeding Prcoedures

Brake System Bleeding

•	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 contaminate the brake fluid.

•	Do not spill brake fluid on the vehicle, it may damage the paint; if brake fluid does contact the paint, wash it off immediately with water.

•	The reservoir on the master cylinder must be at the MAX (upper) level mark at the start of bleeding procedure and checked after bleeding each brake caliper. Add fluid as required.

1.	Make sure the brake fluid in the reservoir is at the MAX (upper) level line.

2.	Have someone slowly pump the brake pedal several times, and then apply pressure.

3.	Loosen the right-rear brake bleed screw (A) to allow air to escape from the system. Then tighten the bleed screw securely. [Front] [Rear]

4.	Repeat the procedure for wheel in the sequence shown below until air bubbles no longer appear in the fluid.

5.	Refill the master cylinder reservoir to MAX (upper) level line.

ABS System Bleeding

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.

Remove the reservoir cap and fill the brake reservoir tank with brake fluid.

•	If there is any brake fluid on any painted surface, wash it off immediately.

•	Recommended fluid........ DOT3 or DOT4

2.	Connect self-diagnosis connector (16pins) located under the driver side crash pad to self-diagnosis device, and then turn the self-diagnosis device after key is ON.

3.	Select the "vehicle model" and "ABS/ESC" on GDS vehicle selection screen, then select OK.

4.	Select HCU air bleeding mode.

5.	Have an assistant press the brake pedal several times to pressurize it and keep it pressed.

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).

Tightening torque :

6.8 - 12.7 N.m (0.7 - 1.3 kgf.m, 5.0 - 9.4 lb-ft)

[Front]

[Rear]

7.	Repeat the procedure for wheel in the sequence shown below until air bubbles no longer appear in the fluid.

8.	The steps should be performed in the order of rear right, front left, rear left and front right.

9.	Refill the master cylinder reservoir to MAX (upper) level line.

Troubleshooting

Troubleshooting Problem Symptoms Table Use the table below to help you find the cause of the problem. The numbers indicate the priority of the like cause of the problem ...

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