Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSLEXUS2006RX 400H AWD V6-3.3L (3MZ-FE) HYBRIDREPAIR AND DIAGNOSISBRAKES AND TRACTION CONTROLDISC BRAKE SYSTEMTESTING AND INSPECTIONFRONT
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) Hybrid
Front
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) HybridSECTION Front
FRONT BRAKE
INSPECTION
1. INSPECT BRAKE CYLINDER AND PISTON
a. Check the brake cylinder bore and the brake piston for rust or scoring.
2. INSPECT PAD LINING THICKNESS
a. Using a ruler, measure the pad lining thickness.
Minimum thickness: 1.0 mm (0.039 inch)
Standard thickness: 11.0 mm (0.394 inch)
3. INSPECT FRONT DISC BRAKE PAD SUPPORT PLATE NO. 1
a. Make sure that the pad support plate No. 1 has sufficient rebound, has no deformation, cracks or wear, and that all rust and dirt are cleaned off. If necessary, replace the brake pad support plate No. 1.
b. Clean the contact surface of the pad support plate of the disc brake cylinder mounting before installing. After installation, check that there is no looseness or deformation.
c. When installing the pad, check that the support has sufficient rebound and the pad does not fall out easily.
4. INSPECT FRONT DISC BRAKE PAD SUPPORT PLATE NO. 2
a. Make sure that the pad support plate No. 2 has sufficient rebound, has no deformation, cracks or wear, and that all rust and dirt are cleaned off. If necessary, replace the brake pad support plate No. 2.
5. INSPECT DISC THICKNESS
a. Using a micrometer, measure the disc thickness.
Minimum thickness: 26.0mm (1.024 inch)
Standard thickness: 28.0mm (1.102 inch)
b. If the disc thickness is less than the minimum, replace the front disc.
INSPECTION
1. INSPECT BRAKE CYLINDER AND PISTON
a. Check the brake cylinder bore and the brake piston for rust or scoring.
2. INSPECT PAD LINING THICKNESS
a. Using a ruler, measure the pad lining thickness.
Minimum thickness: 1.0 mm (0.039 inch)
Standard thickness: 11.0 mm (0.394 inch)
3. INSPECT FRONT DISC BRAKE PAD SUPPORT PLATE NO. 1
a. Make sure that the pad support plate No. 1 has sufficient rebound, has no deformation, cracks or wear, and that all rust and dirt are cleaned off. If necessary, replace the brake pad support plate No. 1.
b. Clean the contact surface of the pad support plate of the disc brake cylinder mounting before installing. After installation, check that there is no looseness or deformation.
c. When installing the pad, check that the support has sufficient rebound and the pad does not fall out easily.
4. INSPECT FRONT DISC BRAKE PAD SUPPORT PLATE NO. 2
a. Make sure that the pad support plate No. 2 has sufficient rebound, has no deformation, cracks or wear, and that all rust and dirt are cleaned off. If necessary, replace the brake pad support plate No. 2.
5. INSPECT DISC THICKNESS
a. Using a micrometer, measure the disc thickness.
Minimum thickness: 26.0mm (1.024 inch)
Standard thickness: 28.0mm (1.102 inch)
b. If the disc thickness is less than the minimum, replace the front disc.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.