Problem Symptoms Table
WARNING: This page is about a different car, the 2008 Lexus LS 600hL. 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 symptom 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 Procedure |
|---|---|---|
| Low pedal or spongy pedal | Fluid leaks in brake system | - |
| Air in brake system | BRAKE FLUID | |
| Front brake piston seals (Worn or damaged) | FRONT BRAKE | |
| Rear brake piston seals (Worn or damaged) | REAR BRAKE | |
| Master cylinder (Faulty) | BRAKE MASTER CYLINDER | |
| Brake drag | Brake pedal stroke sensor (Out of adjustment) | INSPECTION |
| Brake pedal free play (Minimal) | BRAKE PEDAL SUPPORT | |
| Electric parking brake actuator | ON-VEHICLE INSPECTION | |
| Parking brake shoe clearance (Out of adjustment) | PROBLEM SYMPTOMS TABLE | |
| Parking brake shoe lining (Cracked or distorted) | INSPECTION | |
| Tension or return spring (Damaged) | DISASSEMBLY | |
| Front brake pad (Cracked or distorted) | FRONT BRAKE | |
| Rear brake pad (Cracked or distorted) | REAR BRAKE | |
| Front brake piston (Stuck) | FRONT BRAKE | |
| Rear brake piston (Stuck) | REAR BRAKE | |
| Front brake piston (Frozen) | FRONT BRAKE | |
| Rear brake piston (Frozen) | REAR BRAKE | |
| Master cylinder (Faulty) | BRAKE MASTER CYLINDER | |
| Brake pull | Front brake piston (Stuck) | FRONT BRAKE |
| Rear brake piston (Stuck) | REAR BRAKE | |
| Front brake pad (Oily) | FRONT BRAKE | |
| Rear brake pad (Oily) | REAR BRAKE | |
| Front brake piston (Frozen) | FRONT BRAKE | |
| Rear brake piston (Frozen) | REAR BRAKE | |
| Front brake disc (Scored) | FRONT BRAKE | |
| Rear brake disc (Scored) | REAR BRAKE | |
| Front brake pad (Cracked or distorted) | FRONT BRAKE | |
| Rear brake pad (Cracked or distorted) | REAR BRAKE | |
| Brake pedal is depressed firmly but brake is insufficient | Fluid leaks in brake system | - |
| Air in brake system | BRAKE FLUID | |
| Front brake pad (Worn) | FRONT BRAKE | |
| Rear brake pad (Worn) | REAR BRAKE | |
| Front brake pad (Cracked or distorted) | FRONT BRAKE | |
| Rear brake pad (Cracked or distorted) | REAR BRAKE | |
| Front brake pad (Oily) | FRONT BRAKE | |
| Rear brake pad (Oily) | REAR BRAKE | |
| Front brake pad (Glazed) | FRONT BRAKE | |
| Rear brake pad (Glazed) | REAR BRAKE | |
| Front brake disc (Scored) | FRONT BRAKE | |
| Rear brake disc (Scored) | REAR BRAKE | |
| Noise from brakes | Front brake pad (Cracked or distorted) | FRONT BRAKE |
| Rear brake pad (Cracked or distorted) | REAR BRAKE | |
| Front brake installation bolt (Loose) | FRONT BRAKE | |
| Rear brake installation bolt (Loose) | REAR BRAKE | |
| Front brake disc (Scored) | FRONT BRAKE | |
| Rear brake disc (Scored) | REAR BRAKE | |
| Front brake pad (Dirty) | FRONT BRAKE | |
| Rear brake pad (Dirty) | REAR BRAKE | |
| Front brake pad (Glazed) | FRONT BRAKE | |
| Rear brake pad (Glazed) | REAR BRAKE | |
| Front brake anti-squeal shim (Damaged) | FRONT BRAKE | |
| Rear brake anti-squeal shim (Damaged) | REAR BRAKE |