Hyundai Tucson: 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 | |
| Brake drag | 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 | |
| Anker or return spring (malfunction) | Replace | |
| Booster system (Vacuum leaks) | 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 (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 | |
| Booster system (Vacuum leaks) | 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 | |
| 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 vehicle to get rid of corrosion between rotor and pads. | |
| Caved disc | Replace | |
| Poor braking performance (at highway speeds) | Pad or lining (worned out) | Replace |
| Master cylinder (malfunction) | Replace | |
| Brake vibration | Brake booster (Vacuum leaks) | 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 |
Brake System
...
Specifications
- Specifications
ItemSpecification
Master cylinderTypeTandem
I.D. mm (in)22.22 mm (0.87 in)
Piston stroke mm (in) 45 mm (1.77 in)
Brake boosterType11" Tie-rod
Boosting ratio10.5 : 1
Front dis ...
Other information:
Hyundai Tucson (NX4) 2022-2026 Service Manual: Repair procedures
- Adjustment
Glass Adjustment
• Check the glass run channel for damage or deterioration, and replace it if necessary.
1.Remove the rear door trim.(Refer to Rear Door - "Rear Door Trim")
2.Remove the plug hole(A).
3.Lower the glass by operating the power window switc ...
Hyundai Tucson (NX4) 2022-2026 Owner's Manual: Good Braking Practices
WARNING
Whenever leaving the vehicle or parking,
always come to a complete stop and
continue to depress the brake pedal.
Shift the gear to the P (Park) position,
apply the parking brake, and move the
ignition switch to the LOCK/OFF position.
Vehicles parked with the parking brake
not a ...
