my Toyota Highlander XU70 (2020-Present) has an exhaust smell in the cabin

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to avoid electrical hazards.

2. Inspect and Repair Exhaust System

• Tools Required: Socket set, jack and jack stands, exhaust repair putty (if applicable), replacement exhaust parts (if necessary).
• Raise the vehicle using a jack and secure it with jack stands.
• Inspect the entire length of the exhaust system from the engine to the muffler for any signs of rust, holes, or loose connections.
• If any leaks are found, note the location for repair or replacement.
• Use exhaust repair putty to seal small leaks or replace damaged sections as needed using the socket set.

3. Replace Cabin Air Filter

• Tools Required: Screwdriver (if needed for cover removal).
• Locate the cabin air filter access panel (usually found behind the glove compartment).
• Remove the access panel and extract the old cabin air filter.
• Install a new cabin air filter, ensuring it is oriented correctly as per the airflow direction indicated on the filter.
• Reattach the access panel securely.

4. Check Seals and Ventilation System

• Inspect the weather stripping around doors and windows for wear or gaps.
• Replace any damaged weather stripping to ensure a tight seal.
• Remove any obstructions from the ventilation system intake area (usually located under the windshield).
• If necessary, clean the intake area to allow for proper airflow.