Hyundai Elantra Owners and Service Manuals

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

    ..

    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: What to Expect After an Air Bag Inflates


    After a frontal or side air bag inflates, it will deflate very quickly. Air bag inflation will not prevent the driver from seeing out of the windshield or being able to steer. Curtain air bags may remain partially inflated for some time after they deploy...

    Hyundai Elantra (CN7) 2021-2025 Service Manual: Rear Coil Spring


    Components and components location Components1. Coil spring upper pad2. Rear coil spring3. Coil spring lower pad Repair procedures Removal1.Loosen the wheel nuts slightly.Raise the vehicle, and make sure it is securely supported.2.Remove the rear wheel and tire (A) from the rear hub...

    Categories

    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.

    read more

    Copyright © 2025 www.helantra7.com