Microfilters State of Wear

Microfilter

The condition of the microfilter is calculated by the IHKA or IHKR control unit on the basis of the following values (= virtual sensor):
- Outside temperature
- Wiper operation
- Useful life of the heater
- Air recirculation mode
- Car road speed
- Fan speed
- Distance driven since the last filter change
- Time
A filter change is due after 24 months at the latest.

The "microfilter" interval is flexible and dependent on the operating conditions. When resetting, the last value of the interval forecast is taken as the starting value for the new interval.

Important: Maintenance needed after resetting the microfilter. After resetting the maintenance operation "microfilter", the battery must not be disconnected immediately. Wait until the vehicle has gone into sleep mode.