Climate
Cabin Air Filter
The cabin filter cleans the air that reaches the interior through the heating and AC system.
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AC & climate flow
Interactive — tap a partTap a part to see how it fits in the system.
What it does
- Filters dust, pollen and pollution from cabin air
- Protects the evaporator from debris
- Often charcoal type removes odors
When it fails
- Weak airflow from the vents
- Bad smell when the blower runs
- Steam on the windscreen
- Noisy blower
How to diagnose
- Inspect the filter for dirt and debris
- Compare airflow with the filter out
- Check the filter housing seal
Maintenance
- Replace every 15,000–20,000 km or yearly
- Replace more often in dusty cities
- Fit the correct airflow direction
Use the diagnosis order. When a part fails, confirm each hypothesis with measurements before replacing anything — codes and symptoms overlap.
Related part
AC Compressor
The AC compressor pressurizes the refrigerant so the system can absorb and reject heat.