See also:

Problems with PARKTRONIC
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Important safety notes
WARNING Severe conditions (e.g. strong air pollution) may require replacement of the filter before its scheduled replacement interval. A clogged filter will reduce the air volume to the interi ...

General notes
The Driving Assistance package is only available on vehicles with HYBRID. The Driving Assistance package consists of DISTRONIC PLUS, Blind Spot Assist and Lane Keeping Assist. ...