Brake. Lexus Gs430, Gs300. Uzs190 Grs190
Brake. Lexus Gs430, Gs300. Uzs190 Grs190
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 (VSC) | Click here |
| 2. Fluid leaks in brake system (ECB) | Click here | |
| 3. Air in brake system (VSC) | Click here | |
| 4. Air in brake system (ECB) | Click here | |
| 5. Piston seals (Worn or damaged) (FRONT) | Click here | |
| 6. Piston seals (Worn or damaged) (REAR) | Click here | |
| 7. Master cylinder (Faulty) (VSC) | Click here | |
| 8. Master cylinder (Faulty) (ECB) | Click here | |
| 9. Booster push rod (Out of adjustment) (VSC) | Click here | |
| Brake drag | 1. Brake pedal freeplay (Insufficient) | Click here |
| 2. Parking brake pedal travel (Out of adjustment) | Click here | |
| 3. Parking brake cable (Sticking) | Click here | |
| 4. Parking brake shoe clearance (Out of adjustment) | Click here | |
| 5. Pad (Cracked or distorted) (FRONT) | Click here | |
| 6. Pad (Cracked or distorted) (REAR) | Click here | |
| 7. Piston (Stuck) (FRONT) | Click here | |
| 8. Piston (Stuck) (REAR) | Click here | |
| 9. Piston (Seized) (FRONT) | Click here | |
| 10. Piston (Seized) (REAR) | Click here | |
| 11. Booster push rod (Out of adjustment) (VSC) | Click here | |
| 12. Vacuum leaks in booster systems (VSC) | Click here | |
| 13. Master cylinder (Faulty) (VSC) | Click here | |
| 14. Master cylinder (Faulty) (ECB) | Click here | |
| Brake pull | 1. Piston (Stuck) (FRONT) | Click here |
| 2. Piston (Stuck) (REAR) | Click here | |
| 3. Pad (Oily) (FRONT) | Click here | |
| 4. Pad (Oily) (REAR) | Click here | |
| 5. Piston (Seized) (FRONT) | Click here | |
| 6. Piston (Seized) (REAR) | Click here | |
| 7. Disc (Scored) (FRONT) | Click here | |
| 8. Disc (Scored) (REAR) | Click here | |
| 9. Pad (Cracked or distorted) (FRONT) | Click here | |
| 10. Pad (Cracked or distorted) (REAR) | Click here | |
| Hard pedal but brake inefficient | 1. Fluid leaks in brake system (VSC) | Click here |
| 2. Fluid leaks in brake system (ECB) | Click here | |
| 3. Air in brake system (VSC) | Click here | |
| 4 .Air in brake system (ECB) | Click here | |
| 5. Pad (Worn) (FRONT) | Click here | |
| 6. Pad (Worn) (REAR) | Click here | |
| 7. Pad (Cracked or distorted) (FRONT) | Click here | |
| 8. Pad (Cracked or distorted) (REAR) | Click here | |
| 9. Pad (Oily) (FRONT) | Click here | |
| 10. Pad (Oily) (REAR) | Click here | |
| 11. Pad (Glazed) (FRONT) | Click here | |
| 12. Pad (Glazed) (REAR) | Click here | |
| 13. Disc (Scored) (FRONT) | Click here | |
| 14. Disc (Scored) (REAR) | Click here | |
| 15. Booster push rod (Out of adjustment) (VSC) | Click here | |
| 16. Vacuum leaks in booster system (VSC) | Click here | |
| Noise from brakes | 1. Pad (Cracked or distorted) (FRONT) | Click here |
| 2. Pad (Cracked or distorted) (REAR) | Click here | |
| 3. Installation bolt (Loose) (FRONT) | Click here | |
| 4. Installation bolt (Loose) (REAR) | Click here | |
| 5. Disc (Scored) (FRONT) | Click here | |
| 6. Disc (Scored) (REAR) | Click here | |
| 7. Sliding pin (Worn) (FRONT) | Click here | |
| 8. Sliding pin (Worn) (REAR) | Click here | |
| 9. Pad (Dirty) (FRONT) | Click here | |
| 10. Pad (Dirty) (REAR) | Click here | |
| 11. Pad (Glazed) (FRONT) | Click here | |
| 12. Pad (Glazed) (REAR) | Click here | |
| 13. Anti-squeal shim (Damaged) (FRONT) | Click here | |
| 14. Anti-squeal shim (Damaged) (REAR) | Click here |