my Volkswagen Golf MK6 (2009-2014) has a strange smell inside, what could it be?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle battery for safety.

2. Cabin Air Filter Replacement

• Tools Required: Screwdriver, replacement cabin air filter.
• Remove the glove compartment by unscrewing the screws and detaching it.
• Locate the cabin air filter housing, unclip it, and remove the old filter.
• Install the new cabin air filter, ensuring it is oriented correctly.
• Reassemble the glove compartment.

3. Leak Inspection and Repair

• Tools Required: Coolant, funnel, inspection light.
• Check coolant levels in the reservoir; if low, fill to the recommended level.
• Inspect hoses and connections for leaks; replace any damaged hoses or clamps.
• If leaks are found, replace the faulty component and ensure proper sealing.

4. HVAC System Cleaning

• Tools Required: HVAC cleaning spray, soft brush, vacuum.
• Turn on the HVAC system to the highest setting.
• Spray the HVAC cleaning solution into the fresh air intake.
• Allow the solution to sit for the prescribed time, then use a vacuum to clean any debris.
• Optionally, consider using an ozone generator to remove odors from the system.

5. Carpet and Upholstery Drying

• Tools Required: Wet/dry vacuum, towels, fans or dehumidifier.
• Use a wet/dry vacuum to extract moisture from the carpets and seats.
• Dry the surfaces thoroughly with towels and use fans or a dehumidifier to expedite drying.