The BMW E36 is also known as the 3-series models. Many E36 BMWs are equipped with a microfilter that prevents dust and pollen from entering the passenger compartment. BMW recommends replacing the filter every 15,000 miles or once a year. If you drive in extreme conditions such as on dirt roads or thick traffic, the life of the pollen filter is shortened. A clean pollen filter improves air circulation throughout the ventilation system and keeps the air in the car cleaner.
Remove the screws holding in the rectangular panel beneath the glove compartment.
Lift off the panel to expose the pollen filter access door.
Remove the four screws on the filter compartment door. Remove the filter compartment door.
Pull the old filter out of the filter compartment.
Remove the old filter from the compartment. Remove the filter from the filter frame.
Insert the new filter into the filter frame.
Slide the filter into the compartment.
Replace the filter access door and the four screws that hold it in place.
Replace the rectangular panel. Replace the screws that hold the panel in place.