| Last Modified: 7-3-2017 | 6.8:8.0.40 | Doc ID: RM0000018DL005X |
| Model Year Start: 2007 | Model: LX470 | Prod Date Range: [08/2006 - ] |
| Title: BRAKE: BRAKE SYSTEM: PROBLEM SYMPTOMS TABLE; 2007 MY LX470 [08/2006 - ] | ||
PROBLEM SYMPTOMS TABLE
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.
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
Low pedal or spongy pedal |
1. Fluid leaks in brake system |
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2. Air in brake system |
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3. Piston seals (worn or damaged, front) |
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4. Piston seals (worn or damaged, rear) |
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5. Hydraulic brake booster (faulty) |
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Brake drag |
1. Brake pedal free play (minimum) |
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2. Parking brake lever travel (adjustment necessary) |
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3. Parking brake wire (stuck) |
- |
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4. Parking brake shoe clearance (adjustment necessary) |
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5. Pad (cracked or distorted, front) |
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6. Pad (cracked or distorted, rear) |
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7 Piston (stuck or frozen, front) |
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8. Piston (stuck or frozen, rear) |
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9. Tension or return spring (faulty) |
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10. Hydraulic brake booster (faulty) |
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Brake pull |
1. Piston (stuck or frozen, front) |
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2. Piston (stuck or frozen, rear) |
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3. Pad (oily, cracked or distorted, front) |
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4. Pad (oily, cracked or distorted, rear) |
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5. Disc (scored, front) |
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6. Disc (scored, rear) |
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7. Hydraulic brake booster (faulty) |
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Brake pedal is depressed firmly but brake is insufficient |
1. Fluid leaks in brake system |
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2. Air in brake system |
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3. Pad (worn, cracked, distorted, oily or glazed, front) |
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4. Pad (worn, cracked, distorted, oily or glazed, rear) |
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5. Disc (scored, front) |
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6. Disc (scored, rear) |
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7. Hydraulic brake booster (faulty) |
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Noise from brakes |
1. Pad (cracked, distorted, dirty or glazed, front) |
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2. Pad (cracked, distorted, dirty or glazed, rear) |
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3. Installation bolt (loose, front) |
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4. Installation bolt (loose, rear) |
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5. Disc (scored, front) |
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6. Disc (scored, rear) |
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7. Pad support plate (loose, front) |
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8. Pad support plate (loose, rear) |
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9. Sliding pin (worn) |
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10. Tension or return spring (faulty) |
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11. Anti squeal shim (damaged, front) |
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12. Anti squeal shim (damaged, rear) |
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13. Shoe hold down spring (damaged) |
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Noise from hydraulic brake booster (abnormal pump motor operation noise) |
1. Accumulator bracket clearance (adjustment necessary) |
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Brake warning light lights up*1 (parking brake lever released) |
1. Brake fluid level |
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2. Hydraulic brake booster power supply system (faulty) |
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Brake warning light lights up and brake warning buzzer sounds*2 |
1. Hydraulic brake booster power supply system (faulty) |
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ABS warning light lights up |
1. Anti lock brake system (faulty) |
- |
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2 Hydraulic brake booster power supply system (faulty) |
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![2007 MY LX470 [08/2006 - ]; BRAKE: HYDRAULIC BRAKE BOOSTER: INSTALLATION+](../../../../stylegraphics/info.gif "2007 MY LX470 [08/2006 - ]; BRAKE: HYDRAULIC BRAKE BOOSTER: INSTALLATION+")
HINT:
- *1, *3: The light may stay on for about 60 seconds after the engine is started. It is normal if it goes out after a while.
- *2, *3: Depressing the brake pedal repeatedly may turn on the warning light and buzzer. It is normal if the light goes out and the buzzer stops sounding after a few seconds.
- *3: While ABS warning light is ON.
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