Where is the cabin air filter located in a BMW 525?
2 Answers
BMW 525's cabin air filter is located in the engine compartment, next to the hood support rod. You can see it after opening the hood. Below is additional information: Function of cabin air filter: The cabin air filter purifies the air entering the vehicle interior from outside, improving air cleanliness. It typically filters impurities in the air, including microscopic particles, pollen, bacteria, industrial exhaust, and dust, preventing them from entering the air conditioning system to protect both the system and the health of passengers. It also helps prevent window fogging. BMW 525 body dimensions: The BMW 525 has body dimensions of 5047mm in length, 1860mm in width, and 1491mm in height, with a wheelbase of 3108mm.
I've worked on quite a few cars, and the BMW 525's cabin air filter is located behind the glove compartment in the front passenger area. You'll need to remove the glove compartment to access it. To remove it, first empty all items from the glove compartment, then locate the plastic clips on both sides. Gently press to release the clips, allowing you to pull out the entire glove compartment. The rectangular box revealed inside is where the filter is housed. Don't rush to replace it just yet—I recommend using a flashlight to inspect. The filter is usually secured by a cover; simply unscrew the screws or unclip the fasteners to remove the old filter. When installing the new one, pay attention to the directional arrow and ensure it's properly aligned before inserting and securing the cover. This component is crucial—a dirty filter accumulates dust and mold, which can circulate inside the car when the AC is on, affecting respiratory health, especially for those with allergies. I typically check it every six months or 10,000 kilometers. Opt for a high-quality activated carbon filter—it filters more effectively, reduces odors, and can even improve fuel efficiency. It's not difficult to DIY—just follow a few online tutorials, but be careful not to let dust enter the system.
