Hyundai Kona: Brake System / 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. Check each part in order.
If necessary, replace these parts.
Symptom
Suspect Area
Reference
Lower pedal or spongy pedal

1. Brake system (Fluid leaks)
2. Brake system (Air in)
3. Piston seals (Worn or damaged)
4. Rear brake shoe clearance (Out of adjustment)
5. Master cylinder (Inoperative)
repair
air·bleed
replace
adjust
replace
Brake drag
1. Brake pedal free play (Minimum)
2. Parking brake lever travel (Out of adjustment)
3. Parking brake wire (Sticking)
4. Rear brake shoe clearance (Out of adjustment)
5. Pad or lining (Cracked or distorted)
6. Piston (Stuck)
7. Piston (Frozen)
8. Anchor or Return spring (Inoperative)
9. Booster system (Vacuum leaks)
10. Master cylinder (Inoperative)
adjust
adjust
repair
adjust
replace
replace
replace
replace
replace
replace
Brake pull
1. Piston (Sticking)
2. Pad or lining (Oily)
3. Piston (Frozen)
4. Disc (Scored)
5. Pad or lining (Cracked or distorted)
replace
replace
replace
replace
replace
Hard pedal but brake inefficient

1. Brake system (Fluid leaks)
2. Brake system (Air in)
3. Pad or lining (Worn)
4. Pad or lining (Cracked or distorted)
5. Rear brake shoe clearance (Out of adjustment)
6. Pad or lining (Oily)
7. Pad or lining (Glazed)
8. Disc (Scored)
9. Booster system (Vacuum leaks)
repair
air·bleed
replace
replace
adjust
replace
replace
replace
replace
Noise from brake
1. Pad or lining (Cracked or distorted)
2. Installation bolt (Loosen)
3. Disc (Scored)
4. Sliding pin (Worn)
5. Pad or lining (Dirty)
6. Pad or lining (Glazed)
7. Anchor or Return spring (Faulty)
8. Brake pad shim (Damage)
9. Shoe hold-down spring (Damage)
replace
adjust
replace
replace
clean
replace
replace
replace
replace
Brake fades
1. Pad or lining (Worn)
2. Master cylinder (Inoperative)
replace
replace
Brake vibration,pulsation

1. Brake booster (Vacuum leaks)
2. Pedal free play
3. Master cylinder (Inoperative)
4. Caliper (Damage)
5. Master cylinder cap seal
6. Damaged brake lines
replace
adjust
replace
replace
replace
replace

Special service tools
Special Service Tools Tool (Number and Name) Illustration Use 09581-2T100 Piston expander Sprea ...

Brake bleeding prcoedures
Brake Bleeding Prcoedures Brake System Bleeding    • Do not reuse the drained fluid. ...

Other information:

Hyundai Kona (OS) 2018-2024 Owners Manual: Ignition switch
To reduce the risk of SERIOUS INJURY or DEATH, take the following precautions: NEVER allow children or any person who is unfamiliar with the vehicle to touch the ignition switch or related parts. Unexpected and sudden vehicle movement can occur. NEVER reach through the steering wheel for the ...

Hyundai Kona (OS) 2018-2024 Owners Manual: Icy road warning light
This warning light is to warn the driver the road may be icy. When the temperature on the outside temperature gauge is approximately below 4°C (40°F), the Icy Road Warning Light and Outside Temperature Gauge blinks 10 times, and then illuminates. Also, the warning chime sounds 3 times. Informat ...

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