KIA Niro: Troubleshooting - Brake System
Kia Niro - First generation - (DE) (2017-2022) - Service and Repair Manual / Brake System / Troubleshooting - Brake System
Symptom :
Lower pedal or sponge pedal
Expected cause → Countermeasure
- Brake system (oil leakage) → Repair
- Brake system (air inflow) → Air bleeding out procedure
- Piston seal (worn out or damaged) → Replace
Symptom :
Dragged brake
Expected cause → Countermeasure
- Brake pedal free separation (minimum) →Adjust
- Parking brake cable length (adjustment trouble) → Adjust
- Parking brake cable (trapped) → Repair
- Pad and lining (twisted or cracked) → Replace
- Piston (trapped) → Replace
- Piston (frozen) → Replace
- Anker or return spring (malfunction) → Replace
- IBAU (Inoperative) → Replace
Symptom :
Uneven brake
Expected cause → Countermeasure
- Piston (trapped) → Replace
- Pad and lining (oil stain, cracked or twisted) → Replace
Symptom :
Heavy pedal and brake trouble
Expected cause → Countermeasure
- Brake system (oil leakage, air inflow) → Perform air bleeding procedure
- Pad or lining (worned out) → Replace
- Pad or lining (cracked or twisted) → Replace
- Rear brake shoe separation (adjustment trouble) → Adjust
- Pad or lining (oil stain) → Replace
- Pad or lining (slippery) → Replace
- Disc (scratched) → Replace
- IBAU or PSU (Inoperative) → Repair
Symptom :
Noise from brake
Expected cause → Countermeasure
- Pad or lining (cracked or twisted) → Replace
- Looseness of wheel bolt and caliper → Adjust
- Pad sliding trouble (Pad uneven worn out) → Replace
- Pad or lining (dirty) → Cleaning
- Pad or lining (slippery) → Pad replacement
- Anker or return spring (malfunction) → Replace
- Brake pad shim (damaged) → Replace
- Hold down spring (damaged) → Replace
- Foreign substance stucked between disc and pad → Cleaning
- Corrosion on disc → Test drive brake and cleaning * get rid of corrosion by friction while test drive brake
- Caved disc → Replace
Symptom :
Not fully functioning on brake (when drive speed is fast)
Expected cause → Countermeasure
- Pad or lining (worned out) → Replace
Symptom :
Brake vibration
Expected cause → Countermeasure
- Pedal free separation → Adjust
- Damaged on master cylinder cap → Replace
- Damaged on brake line → Replace
- Caliper returning trouble (while tire is turning, check the noise) → Replace
- Transformed disc → Replace
Warning
It is not the malfunction of brake when motor sound is noticed with followings.
- Repeated pushing brake pedal
- Pushing and releasing brake pedal with power off.
- Opening a door of driver side
It is not the malfunction of brake while a brake pedal seems inoperative with followings.
- Noise when pushing brake pedal fast
- Noise when pushing brake pedal consecutively
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