how to troubleshoot a noise from the rear of my Toyota Highlander XU70 (2020-Present)

Solution

1. Preparation

• Gather tools and parts required for inspection and repairs.
• Ensure the vehicle is parked on a level surface and secured with wheel chocks.
• Disconnect the battery if working on electrical components.

2. Inspect Rear Suspension

• Use a jack and jack stands to lift the rear of the vehicle.
• Visually inspect shocks and struts for leaks, rust, or physical damage.
• Check suspension bushings for cracks or excessive wear.
• If components are damaged, proceed to replace them.

3. Examine Exhaust System

• Inspect the exhaust system visually for loose hangers or damage.
• Tighten any loose connections or replace damaged hangers.
• If the exhaust is damaged, replace the affected section.

4. Check Differential Fluid

• Locate the rear differential cover and inspect for leaks.
• Use a socket set to remove the fill plug and check fluid level.
• If low or contaminated, drain the old fluid and refill with manufacturer-recommended differential oil.

5. Tire Inspection

• Check all four tires for uneven wear and proper inflation.
• Remove any foreign objects found in the tread.
• If tires show significant wear, rotate or replace them as necessary.

6. Secure Spare Tire and Tools

• Open the rear compartment and ensure the spare tire and tools are properly secured.
• Tighten any loose components or replace missing parts.