Section 13 (Brake System - General Information): Troubleshooting
WARNING: This page is about a different car, the 2017 Kia Niro. However, it is still accessible from the selected car via links, so may be relevant.
BRAKE SYSTEM TROUBLESHOOTING
| Symptom | Expected cause | Countermeasure |
|---|---|---|
| Lower pedal or sponge pedal | Brake system oil leakage) | Repair |
| Brake system air inflow) | Air bleeding out procedure | |
| Piston seal worn out or damaged) | Replace | |
| Rear brake shoe separation faulty adjustment) | Adjust | |
| Master cylinder malfunction) | Replace | |
| Dragged brake | Brake pedal free separation minimum) | Adjust |
| Parking brake cable length adjustment trouble) | Adjust | |
| Parking brake cable trapped) | Repair | |
| Rear brake shoe separation adjustment trouble) | Adjust | |
| Pad and lining twisted or cracked) | Replace | |
| Piston trapped) | Replace | |
| Piston frozen) | Replace | |
| Anchor or return spring malfunction) | Replace | |
| Booster system leakage of vacuum) | Repair | |
| Master cylinder malfunction) | Replace | |
| Uneven brake | Piston trapped) | Replace |
| Pad and lining oil stain, cracked or twisted) | Replace | |
| Heavy pedal and brake trouble | Brake system oil leakage, air inflow) | Perform air bleeding procedure |
| Pad or lining worn 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 | |
| Booster system leakage of vacuum) | Repair | |
| Noise from brake | 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 | |
| Anchor or return spring malfunction) | Replace | |
| Brake pad shim damaged) | Replace | |
| Hold down spring damaged) | Replace | |
| Foreign substance stuck 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 | |
| Not fully functioning on brake when drive speed is fast) | Pad or lining worn out) | Replace |
| Master cylinder malfunction) | Replace | |
| Brake vibration | Brake booster leakage of vacuum) | Repair |
| Pedal free separation | Adjust | |
| Master cylinder malfunction) | Replace | |
| 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 |
NOTE:
It is not the malfunction of brake when motor sound is noticed with followings.
It is not the malfunction of brake while a brake pedal seems inoperative 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