Where is the air conditioning filter located in the Audi A4?

[LaJordan]

Audi A4 has two air conditioning filters. One is the intake filter, located at the lower left of the engine compartment's cover panel. To remove the intake filter, first take off the foam on the far left, then lift the sealing strip to open the cover panel and reveal the air conditioning filter. The other is the blower filter, located above the passenger seat footwell. Below is the replacement method for the Audi A4 air conditioning filters: 1. Replacing the engine compartment air conditioning filter: The intake filter is at the lower left of the engine compartment's cover panel. First remove the foam on the far left, then lift the sealing strip to open the cover panel and reveal the air conditioning filter. The filter is housed in a rectangular frame; unclip the frame's fasteners and remove it entirely. Install the new air conditioning filter and clean the intake duct. Reassemble in reverse order. 2. Replacing the blower air conditioning filter: The blower filter is above the passenger seat footwell, blocked by a storage compartment. After removing the storage compartment, you'll see a long cover. Remove the cover, take out the old filter, install the new one, and reassemble in reverse order.

[OPaige]

I replaced this myself last time, it's behind the glove compartment on the passenger side. First you need to remove those plastic screws under the glove box, a small Phillips screwdriver will do. After lowering the entire glove box, there's a long black plastic cover inside secured with clips. Apply some pressure to release the clips, remove the cover and you'll see the white cabin air filter. Remember there are arrow markings on the side of the filter - align them with the airflow direction when installing the new one. Personally I recommend changing it every spring, especially in northern areas with lots of willow catkins. After replacement, you'll feel the air inside the car becomes much fresher.

[Destiny]

Changing the air conditioning filter for an Audi A4 requires some patience. It's located above the passenger footwell, and you'll need to remove the side panel first, usually with a T20 Torx screwdriver. After taking off the panel, you'll see a rectangular plastic housing containing the filter. At the front of the housing, there are two plastic clips—press the tabs on both sides simultaneously and lift upwards to open it. When removing the old filter, pay attention to the arrow direction and avoid pulling too hard. The filter housing often accumulates dust, so it's a good idea to clean it with a small vacuum cleaner while you're at it. For those with good DIY skills, it can be done in about half an hour, but if you're not familiar with the process, it might feel a bit tricky the first time.

[LolaLynn]

Audi A4 owners should note that the cabin air filter is located above the footwell on the passenger side. For DIY replacement, prepare a short-handle screwdriver and a phone flashlight - lying on the floor mat makes the operation easier. First remove four screws from the glove compartment lower panel. After removing the panel, release the clips on the black filter housing with your fingernail or a plastic pry tool. When removing the old filter, note the arrow direction. Remember to unfold the pleats of the new filter before installation. Replacing it twice yearly (spring and autumn) is ideal, especially for owners with respiratory sensitivities - regular changes can significantly reduce sneezing while driving.

[GrantLee]

As a DIY enthusiast, a friendly reminder: the cabin air filter in older A4 models is located under the windshield wiper deflector, but post-2013 A4L models have relocated it behind the glove compartment on the passenger side. The key is to remove the lower part of the glove box, requiring a T20 Torx tool. When accessing the filter housing, avoid forcing it open - the side clips feature foolproof design. Highly recommend upgrading to dual-layer activated carbon filters, which significantly reduce odors when driving through tunnels. Important note: the filter housing area has numerous wiring harnesses, so always disconnect the battery negative terminal for safer operation.