The microfilter (2) of the interior ventilation system must be replaced in the following order: Open the hood, turn the side handles 90° (dark arrows, Fig. 17.59) and fold the lid (1) upwards (light arrow).
Remove the cabin ventilation microfilter (1, Fig. 17.60) in the direction indicated by the arrow.
Install a new microfilter and close the lid.
The original entry can be found on the portal: BMWMan.ru