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 INSPECTIONREAR
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) Hybrid
Rear
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) HybridSECTION Rear
REAR BRAKE
INSPECTION
1. INSPECT BRAKE CYLINDER AND PISTON
a. Inspect the 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: 10.0 mm (0.394 inch)
3. INSPECT REAR DISC BRAKE PAD SUPPORT PLATE NO. 1
a. Inspect the front disc brake pad support plate (No. 1) and the front disc brake pad support plate (No. 2).
HINT: Make sure that they have sufficient rebound, and have no deformation, cracks or wear, and all rust and dirt are cleaned off.
4. INSPECT REAR DISC BRAKE PAD SUPPORT PLATE NO. 2
HINT: Inspect the rear disc brake pad support plate No. 2 using the same procedure with the rear disc brake pad support plate No. 1.
5. INSPECT DISC THICKNESS
a. Using a micrometer, measure the disc thickness.
Minimum thickness: 8.5 mm (0.335 inch)
Standard thickness: 10.0 mm (0.394 inch)
b. If the disc thickness is less than the minimum, replace the rear disc.
INSPECTION
1. INSPECT BRAKE CYLINDER AND PISTON
a. Inspect the 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: 10.0 mm (0.394 inch)
3. INSPECT REAR DISC BRAKE PAD SUPPORT PLATE NO. 1
a. Inspect the front disc brake pad support plate (No. 1) and the front disc brake pad support plate (No. 2).
HINT: Make sure that they have sufficient rebound, and have no deformation, cracks or wear, and all rust and dirt are cleaned off.
4. INSPECT REAR DISC BRAKE PAD SUPPORT PLATE NO. 2
HINT: Inspect the rear disc brake pad support plate No. 2 using the same procedure with the rear disc brake pad support plate No. 1.
5. INSPECT DISC THICKNESS
a. Using a micrometer, measure the disc thickness.
Minimum thickness: 8.5 mm (0.335 inch)
Standard thickness: 10.0 mm (0.394 inch)
b. If the disc thickness is less than the minimum, replace the rear 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.