how to fix catalytic converter issues in Toyota Highlander XU70 (2020-Present)

Solution

1. Preparation

• Tools Required: OBD-II scanner, jack and jack stands, socket set, torque wrench, pyrometer, exhaust backpressure gauge, safety glasses, gloves.
• Disconnect the battery to ensure safety.
• Raise the vehicle and secure it on jack stands.

2. Remove the Catalytic Converter

• Sub-steps:
  1. Locate the catalytic converter in the exhaust system.
  2. Use a socket set to remove the bolts securing the catalytic converter to the exhaust pipe and the exhaust manifold.
  3. Carefully lower the catalytic converter from its mount, ensuring not to damage surrounding components.

3. Inspect and Clean (if applicable)

• Sub-steps:
  1. Inspect the catalytic converter for physical damage such as cracks or severe discoloration.
  2. If minor blockages are suspected, clean the catalytic converter using a specialized catalytic converter cleaner according to manufacturer instructions.

4. Replace the Catalytic Converter (if damaged)

• Sub-steps:
  1. Install the new catalytic converter by aligning it with the exhaust manifold and exhaust pipe.
  2. Secure it with the bolts removed earlier, ensuring they are tightened to the manufacturer's specified torque settings (typically around 25-30 ft-lbs, check specifications).
  3. Reconnect any sensors or components removed during the process.

5. Reconnect Battery

• Reconnect the battery terminals and ensure they are tightly secured.