
The cabin air filter in the old Ford Focus is located on the inner side of the glove compartment in front of the front passenger seat. You can see it by removing the glove compartment. When the car is running with the air conditioning on, it draws in outside air into the cabin. However, the air contains many different particles. Without the cabin air filter, these particles can enter the cabin, not only contaminating the car's air conditioning system but also causing allergic reactions in passengers who inhale dust and harmful gases. The dimensions of the Focus are 4647mm in length, 1810mm in width, and 1468mm in height, with a wheelbase of 2705mm. The car's engine has a maximum horsepower of 122Ps, a maximum power of 90kW, and a maximum torque of 153Nm.

When I first drove my old Focus, it took me a long time to locate the cabin air filter, which turned out to be behind the glove compartment on the passenger side. You need to empty the glove box first, then find the clips at the bottom—usually one on each side—and press them inward firmly to release the entire glove box. At this point, you'll see the small cover of the filter, which has a little door or screw. Gently pry it open to remove the old filter. The whole process is simple and doesn't require any tools; I can get it done in just a few minutes. The filter's job is to trap dust and pollen from the air. If left unchanged for too long, it can develop mold and odors, affecting your health, so it's recommended to replace it every six months. Buying the right model is quite cheap—just search online for "old Focus cabin air filter," and you'll find plenty. Doing it yourself saves money and gives a sense of accomplishment. This design is quite user-friendly for older cars, unlike newer models which can be more complicated.

As a DIY enthusiast, I often replace the cabin air filter on my old Ford Focus, which is located behind the glove compartment panel on the passenger side. To replace it, first remove the glove box by pressing the clips on both sides and gently pulling it downward. Then, you'll see a rectangular plastic cover with notches—simply pry it open. The filter is hidden inside, usually with an arrow indicating the direction; make sure not to install it backward. No tools like screwdrivers are needed; it can be done by hand. This task is quite straightforward, perfect for beginners to try. Remember, regular maintenance of the filter keeps the AC airflow fresh and strong. A clogged filter reduces cooling efficiency and increases fuel consumption, while replacement costs just a few bucks each time. You can easily do it in your home garage, saving both time and money on shop visits.

Initially discovered the A/C wasn't cooling in my old Focus. After checking, found the filter location behind the right storage compartment. Just open the glove box to see the bottom clips - press down to remove the box and reveal the filter slot. Replacing it is simple after removing the cover panel. Recommended replacement frequency is once a year to maintain cabin air quality.


