why does my Toyota Highlander Third Generation (2014-2019) make a loud noise when accelerating

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is on a flat surface and secure it with wheel chocks.
• Disconnect the battery to prevent any electrical issues while working.

2. Inspect and Tighten Components

• Sub-steps:
  • Visually inspect all accessible belts and hoses for wear.
  • Use a socket set to tighten any loose bolts on the engine mounts, transmission mounts, and exhaust hangers.

3. Examine the Exhaust System

• Sub-steps:
  • Inspect the exhaust manifold, catalytic converter, and muffler for cracks or loose connections.
  • Replace any damaged components as necessary.
• Tools Required: Wrench set, exhaust clamps (if replacement is needed).

4. Check Drivetrain Components

• Sub-steps:
  • Inspect the driveshaft and CV joints for any signs of damage or excessive play.
  • If any components are worn, replace them with new parts.
• Tools Required: Jack stands, socket set, torque wrench.

5. Reconnect and Test

• Sub-steps:
  • Reconnect the battery.
  • Start the vehicle and monitor for any abnormal sounds.
  • Test drive to confirm the issue has been resolved.