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Home >> Toyota >> 2011 >> Highlander Hybrid >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brake System (Inspection) (Hybrid) >> 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 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

Symptom Suspected Area See
Low pedal or spongy pedal Fluid leaks in brake system -
Air in brake system Refer to BLEEDING
Front disc brake piston seals (Worn or damaged) Refer to DISASSEMBLY
Rear disc brake piston seals (Worn or damaged) Refer to DISASSEMBLY
Brake master cylinder (Faulty) Refer to REMOVAL
Brake drag Brake pedal stroke sensor (Out of adjustment) Refer to ADJUSTMENT - Step 2
Brake pedal free play (Insufficient) Refer to ADJUSTMENT - Step 3
Parking brake pedal travel (Out of adjustment) Refer to ADJUSTMENT
Parking brake cable (Sticking) Refer to REMOVAL
Parking brake shoe clearance (Out of adjustment) Refer to INSPECTION
Front disc brake pad (Cracked or distorted) Refer to REMOVAL
Rear disc brake pad (Cracked or distorted) Refer to REMOVAL
Front disc brake piston (Stuck) Refer to DISASSEMBLY
Rear disc brake piston (Stuck) Refer to DISASSEMBLY
Front disc brake piston (Seized) Refer to DISASSEMBLY
Rear disc brake piston (Seized) Refer to DISASSEMBLY
Brake master cylinder (Faulty) Refer to REMOVAL
Brake pull Front disc brake piston (Stuck) Refer to DISASSEMBLY
Rear disc brake piston (Stuck) Refer to DISASSEMBLY
Front disc brake pad (Oily) Refer to REMOVAL
Rear disc brake pad (Oily) Refer to REMOVAL
Front disc brake piston (Seized) Refer to DISASSEMBLY
Rear disc brake piston (Seized) Refer to DISASSEMBLY
Front disc (Scored) Refer to DISASSEMBLY
Rear disc (Scored) Refer to DISASSEMBLY
Front disc brake pad (Cracked or distorted) Refer to REMOVAL
Rear disc brake pad (Cracked or distorted) Refer to REMOVAL
Hard pedal but brake inefficient Fluid leaks in brake system -
Air in brake system Refer to BLEEDING
Front disc brake pad (Worn) Refer to REMOVAL
Rear disc brake pad (Worn) Refer to REMOVAL
Front disc brake pad (Cracked or distorted) Refer to REMOVAL
Rear disc brake pad (Cracked or distorted) Refer to REMOVAL
Front disc brake pad (Oily) Refer to REMOVAL
Rear disc brake pad (Oily) Refer to REMOVAL
Front disc brake pad (Glazed) Refer to REMOVAL
Rear disc brake pad (Glazed) Refer to REMOVAL
Front disc (Scored) Refer to DISASSEMBLY
Rear disc (Scored) Refer to DISASSEMBLY
Noise from brakes Front disc brake pad (Cracked or distorted) Refer to REMOVAL
Rear disc brake pad (Cracked or distorted) Refer to REMOVAL
Front disc brake cylinder mounting bolt (Loose) Refer to REASSEMBLY - Step 7
Rear disc brake cylinder mounting bolt (Loose) Refer to REASSEMBLY - Step 8
Front disc (Scored) Refer to DISASSEMBLY
Rear disc (Scored) Refer to DISASSEMBLY
Front disc brake pad support plate (Loose) Refer to DISASSEMBLY
Rear disc brake pad support plate (Loose) Refer to DISASSEMBLY
Front disc brake cylinder sliding pin (Worn) Refer to DISASSEMBLY
Rear disc brake cylinder sliding pin (Worn) Refer to DISASSEMBLY
Front disc brake pad (Dirty) Refer to REMOVAL
Rear disc brake pad (Dirty) Refer to REMOVAL
Front disc brake pad (Glazed) Refer to REMOVAL
Rear disc brake pad (Glazed) Refer to REMOVAL
Front anti-squeal shim (Damaged) Refer to DISASSEMBLY
Rear anti-squeal shim (Damaged) Refer to DISASSEMBLY