Problem Symptoms Table
WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
Use the table below to help determine the cause of the problem symptoms If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Brake System
PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | See |
|---|---|---|
| Low pedal or spongy pedal | Fluid leaks in brake system | - |
| Air in brake system | BRAKE FLUID | |
| Master cylinder (Faulty) | BRAKE MASTER CYLINDER | |
| Brake drag | Brake pedal free play (Insufficient) | BRAKE PEDAL |
| Parking brake pedal travel (Out of adjustment) | PARKING BRAKE SYSTEM | |
| Parking brake cable (Sticking) | REMOVAL | |
| Parking brake shoe clearance (Out of adjustment) | PARKING BRAKE SYSTEM | |
| Pad (Cracked or distorted) (for Front) | INSPECTION | |
| Pad (Cracked or distorted) (for Rear) | INSPECTION | |
| Vacuum leaks in booster system | BRAKE BOOSTER | |
| Master cylinder (Faulty) | BRAKE MASTER CYLINDER | |
| Brake pull | Pad (Oily) (for Front) | INSPECTION |
| Pad (Oily) (for Rear) | INSPECTION | |
| Disc (Scored) (for Front) | INSPECTION | |
| Disc (Scored) (for Rear) | INSPECTION | |
| Pad (Cracked or distorted) (for Front) | INSPECTION | |
| Pad (Cracked or distorted) (for Rear) | INSPECTION | |
| Hard pedal but brake inefficient | Fluid leaks in brake system | - |
| Air in brake system | BRAKE FLUID | |
| Pad (Worn) (for Front) | INSPECTION | |
| Pad (Worn) (for Rear) | INSPECTION | |
| Pad (Cracked or distorted) (for Front) | INSPECTION | |
| Pad (Cracked or distorted) (for Rear) | INSPECTION | |
| Pad (Oily) (for Front) | INSPECTION | |
| Pad (Oily) (for Rear) | INSPECTION | |
| Pad (Glazed) (for Front) | INSPECTION | |
| Pad (Glazed) (for Rear) | INSPECTION | |
| Disc (Scored) (for Front) | INSPECTION | |
| Disc (Scored) (for Rear) | INSPECTION | |
| Vacuum leaks in booster system | BRAKE BOOSTER | |
| Noise from brakes | Pad (Cracked or distorted) (for Front) | INSPECTION |
| Pad (Cracked or distorted) (for Rear) | INSPECTION | |
| Cylinder mounting bolt (Loose) (for Front) | INSTALLATION | |
| Cylinder mounting bolt (Loose) (for Rear) | INSTALLATION | |
| Disc (Scored) (for Front) | INSPECTION | |
| Disc (Scored) (for Rear) | INSPECTION | |
| Pad (Dirty) (for Front) | INSPECTION | |
| Pad (Dirty) (for Rear) | INSPECTION | |
| Pad (Glazed) (for Front) | INSPECTION | |
| Pad (Glazed) (for Rear) | INSPECTION | |
| Anti-squeal shim (Damaged) (for Front) | REMOVAL | |
| Anti-squeal shim (Damaged) (for Rear) | REMOVAL |