Hyundai Elantra: Brake System / Troubleshooting
Hyundai Elantra (CN7) 2021-2025 Service Manual / 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 shoe (Inoperative) 9. Booster system (Vacuum leaks) 10. Master cylinder (Inoperative) | adjust adjust repair adjust replace replace replace replace repair 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 adjust replace replace repair |
| 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 shoe (Faulty) 8. Brake pad shim (Damage) 9. Shoe hold-down spring (Damage) | replace adjust replace replace clean replace replace replace replace |
| Brake fades (When fast driving) | 1. Pad or lining (Worm) 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 |
| Brake Warning lamp on
| 1. Brake oil level sensor connector not connected | Reconnect the connector. |
Brake System
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Specifications
Specifications
Item
Specification
Master cylinderCylinder I.D.22.22 mmPiston stroke45 ± 1 mm (1...
Other information:
Hyundai Elantra (CN7) 2021-2025 Owner's Manual: Emergency braking
If there is a problem with the brake pedal while driving, emergency braking is possible by pulling up and holding the EPB switch. Braking is possible only while you are holding the EPB switch. However, braking distance will be longer than normal...
Hyundai Elantra (CN7) 2021-2025 Service Manual: Power Door Mirror Actuator
Repair procedures Removal1.Disconnect (-) battery terminal.2.Using a fastener remover (C), remove the mirror (A) as illustration below. • Protect mirror from removing tool with cloth (B) wrapped.• Be careful not to damage mirror and mirror housing during removing process...
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Rear center seat belt
When using the rear center seat belt, the buckle with the “CENTER” mark must be used.
WARNING
Make sure that the seatback is locked in place when using the rear center seat belt.
If not, the seatback may move when there is a sudden stop or collision, which could result in serious injury.
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