Brake. Lexus Is250, Is220D. Gse20 Ale20
Brake. Lexus Is250, Is220D. Gse20 Ale20
Brake System -- Problem Symptoms Table |
Use the table below to help determine the cause of the problem. The numbers indicate the priority of the likely cause of the problem. Check each part in order. If necessary, replace these parts.
| Symptom | Suspected area | See page |
| Low pedal or spongy pedal | 1. Fluid leaks in brake system | Click here |
| 2. Air in brake system | Click here | |
| 3. Piston seals are worn or damaged (FRONT) | Click here | |
| 4. Piston seals are worn or damaged (REAR) | Click here | |
| 5. Master cylinder is faulty | Click here | |
| 6. Booster push rod clearance is out of adjustment | Click here | |
| Brake drag | 1. Brake pedal free play is insufficient | Click here |
| 2. Parking brake pedal travel clearance is out of adjustment | Click here | |
| 3. Parking brake cable is stuck | Click here | |
| 4. Parking brake shoe clearance is out of adjustment | Click here | |
| 5. Pad is cracked or distorted (FRONT) | Click here | |
| 6. Pad is cracked or distorted (REAR) | Click here | |
| 7. Piston is stuck (FRONT) | Click here | |
| 8. Piston is stuck (REAR) | Click here | |
| 9. Piston is seized (FRONT) | Click here | |
| 10. Piston is seized (REAR) | Click here | |
| 11. Booster push rod clearance is out of adjustment | Click here | |
| 12. Vacuum leaks in booster systems | Click here | |
| 13. Master cylinder is faulty | Click here | |
| Brake pull | 1. Piston is stuck (FRONT) | Click here |
| 2. Piston is stuck (REAR) | Click here | |
| 3. Pad is oily (FRONT) | Click here | |
| 4. Pad is oily (REAR) | Click here | |
| 5. Piston is seized (FRONT) | Click here | |
| 6. Piston is seized (REAR) | Click here | |
| 7. Disc is scored (FRONT) | Click here | |
| 8. Disc is scored (REAR) | Click here | |
| 9. Pad is cracked or distorted (FRONT) | Click here | |
| 10. Pad is cracked or distorted (REAR) | Click here | |
| Hard pedal but brake inefficient | 1. Fluid leaks in brake system | Click here |
| 2. Air in brake system | Click here | |
| 3. Pad is worn (FRONT) | Click here | |
| 4. Pad is worn (REAR) | Click here | |
| 5. Pad is cracked or distorted (FRONT) | Click here | |
| 6. Pad is cracked or distorted (REAR) | Click here | |
| 7. Pad is oily (FRONT) | Click here | |
| 8. Pad is oily (REAR) | Click here | |
| 9. Pad is glazed (FRONT) | Click here | |
| 10. Pad is glazed (REAR) | Click here | |
| 11. Disc is scored (FRONT) | Click here | |
| 12. Disc is scored (REAR) | Click here | |
| 13. Booster push rod clearance is out of adjustment | Click here | |
| 14. Vacuum leaks in booster system | Click here | |
| Noise from brakes | 1. Pad is cracked or distorted (FRONT) | Click here |
| 2. Pad is cracked or distorted (REAR) | Click here | |
| 3. Installed bolt is loose (FRONT) | Click here | |
| 4. Installed bolt is loose (REAR) | Click here | |
| 5. Disc is scored (FRONT) | Click here | |
| 6. Disc is scored (REAR) | Click here | |
| 7. Pad support plate is loose (FRONT) | Click here | |
| 8. Pad support plate is loose (REAR) | Click here | |
| 9. Sliding pin is worn (FRONT) | Click here | |
| 10. Sliding pin is worn (REAR) | Click here | |
| 11. Pad is dirty (FRONT) | Click here | |
| 12. Pad is dirty (REAR) | Click here | |
| 13. Pad is glazed (FRONT) | Click here | |
| 14. Pad is glazed (REAR) | Click here | |
| 15. Anti-squeal shim is damaged (FRONT) | Click here | |
| 16. Anti-squeal shim is damaged (REAR) | Click here |
| Symptom | Suspected area | See page |
| Low pedal or spongy pedal | 1. Fluid leaks in brake system | Click here |
| 2. Air in brake system | Click here | |
| 3. Piston seals are worn or damaged (FRONT) | Click here | |
| 4. Piston seals are worn or damaged (REAR) | Click here | |
| 5. Master cylinder is faulty | Click here | |
| 6. Booster push rod clearance is out of adjustment | Click here | |
| Brake drag | 1. Brake pedal free play is insufficient | Click here |
| 2. Parking brake pedal travel clearance is out of adjustment | Click here | |
| 3. Parking brake cable is stuck | Click here | |
| 4. Parking brake shoe clearance is out of adjustment | Click here | |
| 5. Pad is cracked or distorted (FRONT) | Click here | |
| 6. Pad is cracked or distorted (REAR) | Click here | |
| 7. Piston is stuck (FRONT) | Click here | |
| 8. Piston is stuck (REAR) | Click here | |
| 9. Piston is seized (FRONT) | Click here | |
| 10. Piston is seized (REAR) | Click here | |
| 11. Booster push rod clearance is out of adjustment | Click here | |
| 12. Vacuum leaks in booster systems | Click here | |
| 13. Master cylinder is faulty | Click here | |
| Brake pull | 1. Piston is stuck (FRONT) | Click here |
| 2. Piston is stuck (REAR) | Click here | |
| 3. Pad is oily (FRONT) | Click here | |
| 4. Pad is oily (REAR) | Click here | |
| 5. Piston is seized (FRONT) | Click here | |
| 6. Piston is seized (REAR) | Click here | |
| 7. Disc is scored (FRONT) | Click here | |
| 8. Disc is scored (REAR) | Click here | |
| 9. Pad is cracked or distorted (FRONT) | Click here | |
| 10. Pad is cracked or distorted (REAR) | Click here | |
| Hard pedal but brake inefficient | 1. Fluid leaks in brake system | Click here |
| 2. Air in brake system | Click here | |
| 3. Pad is worn (FRONT) | Click here | |
| 4. Pad is worn (REAR) | Click here | |
| 5. Pad is cracked or distorted (FRONT) | Click here | |
| 6. Pad is cracked or distorted (REAR) | Click here | |
| 7. Pad is oily (FRONT) | Click here | |
| 8. Pad is oily (REAR) | Click here | |
| 9. Pad is glazed (FRONT) | Click here | |
| 10. Pad is glazed (REAR) | Click here | |
| 11. Disc is scored (FRONT) | Click here | |
| 12. Disc is scored (REAR) | Click here | |
| 13. Booster push rod clearance is out of adjustment | Click here | |
| 14. Vacuum leaks in booster system | Click here | |
| Noise from brakes | 1. Pad is cracked or distorted (FRONT) | Click here |
| 2. Pad is cracked or distorted (REAR) | Click here | |
| 3. Installed bolt is loose (FRONT) | Click here | |
| 4. Installed bolt is loose (REAR) | Click here | |
| 5. Disc is scored (FRONT) | Click here | |
| 6. Disc is scored (REAR) | Click here | |
| 7. Pad support plate is loose (FRONT) | Click here | |
| 8. Pad support plate is loose (REAR) | Click here | |
| 9. Sliding pin is worn (FRONT) | Click here | |
| 10. Sliding pin is worn (REAR) | Click here | |
| 11. Pad is dirty (FRONT) | Click here | |
| 12. Pad is dirty (REAR) | Click here | |
| 13. Pad is glazed (FRONT) | Click here | |
| 14. Pad is glazed (REAR) | Click here | |
| 15. Anti-squeal shim is damaged (FRONT) | Click here | |
| 16. Anti-squeal shim is damaged (REAR) | Click here |