Kia Sorento: Troubleshooting
Second Generation XM (2011-2026) / Kia Sorento XM 2011-2026 Service Manual / Brake System / 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 |
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. |
Special Service Tools
Tool(Number and Name)
Illustration
Use
09581-11000
Piston expander
Spreading the front disc brake piston.
...
Brake System
...
See also:
SRSCM Connector terminal
Pin
Function (Connector A)
Pin
Function (Connector B)
1
Ignition
1
Seat belt pretensioner [Driver] High
2
-
...
Precautions
General Precautions
Please read the following precautions carefully before performing the
airbag system service.
Observe the instructions described in this manual, or the airba ...
Telemetics Unit (TMU) Component
Connector Pin Specification
No.
Pin Name
Type
From
To
Description (Wiring Spec.)
1
GND
DC Ground
TMU
Battery
...
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