How to Replace a Boxster Cabin Air Filter
Most auto manufacturers have now started making cabin air filters standard equipment on their vehicles. As a luxury brand, however, Porsche has been putting cabin air filters in their vehicles for decades. These consumable filters trap dust, dirt and allergy-causing particulates as they travel in through the cabin air intake on their way to the passenger compartment. And if you own a Boxster of any model year, changing your cabin air filter will only take about five minutes.
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Instructions
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1
Reach in the driver's side of the Boxster and pull the hood release latch in front of the driver's seat. Open the hood and lock it open.
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2
Look at the passenger's side, right up against the firewall, and you'll see a large, black, plastic cover. This is the cover to the HVAC unit, and it's held in place with two Torx screws. Remove both of these with a Torx wrench and lift the cover off the unit.
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3
Look directly beneath the vents in the HVAC unit cover, and you'll see the black plastic cabin air filter housing. Pull the clip on the right side of the housing to release the lid, then lift the lid off.
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4
Look at the filter inside the housing, and you'll notice that there are small arrows printed on the outside frame of the cabin air filter. These arrows show the direction of the air flow, and you must note the way they're pointing to install the replacement filter pointing the same way. Once you check the arrows, pull the old filter out.
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5
Take the new filter out of its packaging and slide it into the housing with the arrows pointing in the right direction.
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6
Replace the filter housing cover, which will make a clicking noise when it locks into place.
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7
Replace the HVAC unit cover and its screws, then tighten down all the screws with the Torx wrench.
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8
Close the hood.
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Tips & Warnings
The replacement schedule for your cabin air filters depends on the filter manufacturer, not the make and model of the car. But as a general rule, cars that are driven in dirty, dusty or sandy areas will need their filters replaced more frequently than those that are only driven on cleaner roads and highways.
A severely clogged cabin air filter may blow foul smelling air, and can choke the air flow to your vents and defrosters. In driving situations where you might need strong air flow to your defrosters, this could create a dangerous visibility situation.
