why does my Tesla Model 3 Highland (2024-present) have a weird smell when I start the AC?

Solution

1. Preparation

• Tools Required: Screwdriver set, vacuum cleaner, OBD-II scanner, flashlight.
• Disconnect the vehicle from the power source for safety.

2. Inspect and Replace Cabin Air Filter

• Locate the cabin air filter access panel (usually behind the glove compartment).
• Remove the screws or clips holding the panel in place and take it off.
• Remove the old cabin air filter and inspect it for dirt and debris.
• If necessary, clean the housing with a vacuum and replace with a new filter.
• Ensure the filter is installed correctly, following airflow direction indicated on the filter.

3. Drain Pan Inspection

• Locate the AC drain tube under the vehicle.
• Inspect for blockages or visible dirt.
• Clear any obstructions using compressed air or a soft brush.
• If water is present in the drain pan, use a vacuum to remove it.

4. Clean the AC Evaporator

• Remove any panels necessary to access the evaporator.
• Use a specialized AC cleaner spray designed for evaporators.
• Spray into the evaporator fins while running the AC on high to disperse the cleaner.
• Allow the cleaner to sit for the recommended time before wiping excess residue.

5. Check for Leaks

• Inspect the AC compressor and hoses for any visible signs of refrigerant leaks.
• If leaks are found, repair or replace the damaged components.
• Recharge the AC system if refrigerant levels are low.