Cabin Air Filter / Purifier: Description and Operation

Fresh-Air Filter







WARNING: When removing the fresh-air filter, fuse 22 in the instrument panel fuse box must be removed. The cooling fins on the fan control unit are live. Risk of personal injury and short circuit/fire.

The filter is located in the heating and ventilation unit, ahead of the evaporator. The fibres in the filter catch large particles, but to catch even the smallest particles, the filter is electrostatically charged. This electrostatic charge means that the filter attracts particles, in a similar way that a magnet attracts iron filings.

In addition to removing all particles that are visible to the eye, the filter removes particles such as pollen, spores and dust.