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In a BMW 435i, you can locate the cabin air filter behind the glove compartment and under the dashboard. First, you'll have to take out the bump stops securing the glove compartment, and then remove the panel to reach the filter. The cabin air filter in your car is meant to eliminate dust and pollen particles from the air before they enter the vehicle's cabin. If the filter is clogged, it won't be able to capture more contaminants, possibly leading to poorer air quality. As a rule of thumb, it's recommended to replace this filter every six months, depending on your driving frequency.
The cabin air filter in your BMW 435i car works to keep dust and bacteria out of your vehicle's HVAC system and is typically located behind the dashboard and glove compartment in the cabin.