Troubleshooting |
Problem Symptoms Table |
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 Return spring (Inoperative) 9. Booster system (Vacuum leaks) 10. Master cylinder (Inoperative) | adjust adjust repair adjust replace replace replace replace replace 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 replace replace replace replace |
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 Return spring (Faulty) 8. Brake pad shim (Damage) 9. Shoe hold-down spring (Damage) | replace adjust replace replace clean replace replace replace replace |
Brake fades | 1. Master cylinder (Inoperative) | 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 Chatter | Brake chatter is usually caused by loose or worn components, or
glazed or burnt linings. Rotors with hard spots can also contribute to
brake chatter. Additional causes of chatter are out-of-tolerance rotors,
brake lining not securely attached to the shoes, loose wheel bearings
and contaminated brake lining. |
Hyundai Elantra AD (2016-2020) Service Manual: Accelerator Pedal Repair procedures
Removal
1.
Turn the ignition switch OFF and disconnect the negative (-) battery cable.
2.
Disconnect the accelerator position sensor connector (A).
3.
Remove the installation nuts (A) and then remove the accelerator pedal module.
Installation
1.
Installation is reverse of removal. ...
Hyundai Elantra AD (2016-2020) Owners Manual: Air Bag Warning Labels
Air bag warning labels, required by the U.S. National Highway Traffic Safety
Administration (NHTSA), are attached to alert the driver and passengers of potential
risks of the air bag system. Be sure to read all of the information about the air
bags that are installed on your vehicle in thi ...