Parts for your 2018 Mitsubishi Asx-Cabin filter

2018 Mitsubishi ASX Cabin Filter — Purpose, Care and When to Replace

Technical references such as the Mitsubishi Motors Service Manual for the GA-series ASX/RVR/Outlander Sport (HVAC group) and the official Mitsubishi parts catalogue list an “A/C air filter” located behind the glovebox on the 2018 Mitsubishi ASX. Many Australian and New Zealand parts catalogues also show a genuine cabin filter under common part listings (often noted as 7803A006). That means the cabin filter is absolutely fitted and relevant on this model.

On a 2018 ASX, the cabin filter’s job is to scrub the incoming air before it reaches the vents. It traps dust, pollen, road grime and soot, and—if a carbon type is fitted—helps reduce odours and some exhaust fumes. Cleaner air doesn’t just make the cabin nicer to breathe, it also keeps the heater core and evaporator cleaner, which helps the HVAC run efficiently and reduces fogging on damp mornings.

For local conditions, a sensible service rhythm is to inspect the cabin filter every 12 months or 15,000 km, and replace it at that interval or sooner if the vehicle often drives on dusty roads, through bushfire smoke, or in urban stop‑start traffic. Tell-tale signs it’s due include weak airflow even with the fan up, musty odours when the A/C first kicks in, increased window fogging, or a noticeable haze of dust on the filter media.

Replacement is straightforward and usually tool-free: drop the glovebox, release the side stops, slide out the filter tray and swap the element. Ensure the new filter’s airflow arrow matches the housing (typically pointing in the airflow direction). Choosing between a standard particulate filter and a carbon/HEPA-style upgrade comes down to preference—carbon is great for city commutes and odours, while higher-grade media can help during pollen season.

Keeping the ASX’s cabin filter fresh pays off with better air quality, quieter and stronger airflow, and less strain on the blower motor. It’s a small, quick job that slots neatly into routine servicing and helps the car feel newer for longer.

• Check every 12 months/15,000 km, replace sooner in dusty or smoky conditions
• Watch for reduced airflow, odours, or persistent windscreen fogging
• Fit the filter with the airflow arrow oriented correctly in the housing

Popular questions about the 2018 Mitsubishi ASX cabin filter

How often should the 2018 ASX cabin filter be replaced?
Most owners in Australia and New Zealand will be well served by a 12‑month or 15,000 km interval. If the car sees a lot of gravel-road driving, coastal salt air, smoke, or heavy city pollution, checking at 6–9 months is worthwhile. If it looks grey or clogged, replace it—don’t wait for poor airflow.

Where is the cabin filter located on the 2018 ASX?
It sits in the HVAC unit behind the glovebox. Open the glovebox, release the side stops to let it drop further, then you’ll see the small rectangular cover for the filter tray. Slide the tray out, swap the element, and refit with the airflow arrow in the correct direction.

Can driving without a cabin filter cause issues?
The car will still move air, but dust and debris can foul the evaporator and blower over time, leading to odours, reduced performance, and potential noise from the fan. It’s best not to run without a filter, a clean element protects both people and parts.