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Home >> Lexus >> 2010 >> GX 460 >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes (Inspection) >> Brake System >> Problem Symptoms Table >> Problem Symptoms Table

Problem Symptoms Table

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Use the table below to help determine the cause of 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

Symptom Suspected Area Reference
Low pedal or spongy pedal Fluid leaks in brake system -
Air in brake system Refer to BLEEDING
Front brake piston seals (Worn or damaged) Refer to DISASSEMBLY
Rear brake piston seals (Worn or damaged) Refer to DISASSEMBLY
Hydraulic brake booster (Faulty) Refer to REMOVAL
Brake drag Brake pedal free play (Minimum) Refer to ADJUSTMENT
Parking brake pedal travel (Out of adjustment) Refer to ADJUSTMENT
Parking brake wire (Sticking) Refer to REMOVAL
Parking brake shoe clearance (Out of adjustment) Refer to ADJUSTMENT
Front brake pad (Cracked or distorted) Refer to REMOVAL
Rear brake pad (Cracked or distorted) Refer to REMOVAL
Front brake piston (Stuck) Refer to DISASSEMBLY
Rear brake piston (Stuck) Refer to DISASSEMBLY
Front brake piston (Frozen) Refer to DISASSEMBLY
Rear brake piston (Frozen) Refer to DISASSEMBLY
Parking brake tension or return spring (Faulty) Refer to DISASSEMBLY
Hydraulic brake booster (Faulty) Refer to REMOVAL
Brake pull Front brake piston (Stuck) Refer to DISASSEMBLY
Rear brake piston (Stuck) Refer to DISASSEMBLY
Front brake pad (Oily) Refer to REMOVAL
Rear brake pad (Oily) Refer to REMOVAL
Front brake piston (Frozen) Refer to DISASSEMBLY
Rear brake piston (Frozen) Refer to DISASSEMBLY
Front brake disc (Scored) Refer to REMOVAL
Rear brake disc (Scored) Refer to REMOVAL
Front brake pad (Cracked or distorted) Refer to REMOVAL
Rear brake pad (Cracked or distorted) Refer to REMOVAL
Hydraulic brake booster (Faulty) Refer to REMOVAL
Hard pedal but brake inefficient Fluid leaks in brake system -
Air in brake system Refer to BLEEDING
Front brake pad (Worn) Refer to REMOVAL
Rear brake pad (Worn) Refer to REMOVAL
Front brake pad (Cracked or distorted) Refer to REMOVAL
Rear brake pad (Cracked or distorted) Refer to REMOVAL
Front brake pad (Oily) Refer to REMOVAL
Rear brake pad (Oily) Refer to REMOVAL
Front brake pad (Glazed) Refer to REMOVAL
Rear brake pad (Glazed) Refer to REMOVAL
Front brake disc (Scored) Refer to REMOVAL
Rear brake disc (Scored) Refer to REMOVAL
Hydraulic brake booster (Faulty) Refer to REMOVAL
Noise from brakes Front brake pad (Cracked or distorted) Refer to REMOVAL
Rear brake pad (Cracked or distorted) Refer to REMOVAL
Front brake installation bolt (Loose) Refer to INSTALLATION
Rear brake installation bolt (Loose) Refer to INSTALLATION
Front brake disc (Scored) Refer to REMOVAL
Rear brake disc (Scored) Refer to REMOVAL
Rear brake pad support plate (Loose) Refer to REMOVAL
Cylinder slide pin (Worn) Refer to REMOVAL
Front brake pad (Dirty) Refer to REMOVAL
Rear brake pad (Dirty) Refer to REMOVAL
Front brake pad (Glazed) Refer to REMOVAL
Rear brake pad (Glazed) Refer to REMOVAL
Parking brake tension or return spring (Faulty) Refer to DISASSEMBLY
Front brake anti-squeal shim (Damaged) Refer to REMOVAL
Rear brake anti-squeal shim (Damaged) Refer to REMOVAL
Parking brake shoe hold-down spring (Damaged) Refer to DISASSEMBLY