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Where is the cabin air filter located in a BMW 5 Series?

1 Answers
MollyLynn
07/29/25 8:51am
The BMW 5 Series has two sets of cabin air filters: 1. The external air filter is located on the passenger side of the engine compartment. Simply open the hood and use a 10MM hex wrench to complete all operations; 2. The internal filter is positioned near the left foot area of the passenger seat. No need to remove any decorative panels or gloves, though the clip is difficult to release by hand - use a flathead screwdriver to firmly push and pull it open. Typically, replacement isn't necessary within 3 years. Taking the BMW 525Li as an example, this vehicle measures 5106mm in length, 1868mm in width, and 1500mm in height, with a wheelbase of 3105mm. It features a 4-door, 5-seat sedan body type.
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How to Distinguish Between Good and Bad Car Window Films?

Methods to distinguish between good and bad car window films are: 1. Judge by transparency and color. The transparency of car window films refers to the clarity of the view from inside the car to the outside. High-quality films generally have high transparency; regardless of the color depth, you should be able to clearly see objects beyond 6 meters at night. 2. Judge by touch. High-quality films feel thick, smooth, and have sufficient toughness. In contrast, low-quality films are prone to wrinkling and feel thin and soft. 3. Judge by heat insulation. Typically, car film shops have light boxes that simulate sunlight exposure in the car cabin. You can place the film near the light box and feel the heat insulation effect by placing your hand behind the film.
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How to set the window auto?

AUTO translates to "automatic" in English. When the AUTO function on the window is activated, simply pressing the window open/close button once will automatically open or close the window without the need to hold the button down. If there is an "auto" label on the window control button, it indicates that the window has a one-touch up/down feature. More information about AUTO is as follows: 1. AUTO related to cars can have different meanings in different contexts. For example, the Auto mentioned above in green text refers to automatic air conditioning, meaning the car can automatically adjust the air conditioning temperature and airflow based on the current ambient temperature, without manual adjustment. 2. There is also a red letter "A" indicating the engine's energy-saving start-stop function, which is an energy-saving mode equipped in some vehicles.
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How Many Kilometers Should You Change the Gear Oil for New Energy Vehicles?

For new energy vehicles, it is generally recommended to change the gear oil every 40,000 kilometers. Gear oil mainly refers to the lubricating oil used in transmissions and rear axles, differing from engine oil in terms of usage conditions, composition, and performance characteristics. Gear oil primarily serves to lubricate gears and bearings, prevent wear and rust, and assist in heat dissipation for the gears. Characteristics of gear oil: 1. Gear oil is a lubricant designed to maintain the cleanliness of the transmission system, ensuring proper operation of the gearbox and extending the lifespan of the transmission components. 2. Failure to change the gear oil regularly can lead to: the formation of impurities due to chemical changes in the oil, causing blockages in the oil passages and affecting shifting performance. 3. Prolonged operation under high temperatures can reduce the lubricating properties of the gear oil, increasing the risk of clutch plate wear and resulting in stalling phenomena.
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What is the appropriate tire pressure for cars in snowy weather?

In winter, it is advisable to increase the car tire pressure by approximately 0.2 bar based on the standard tire pressure. Hazards of low tire pressure: The friction coefficient with the road surface increases, leading to higher fuel consumption. The friction between the tires and the ground multiplies, causing a sharp rise in tire temperature, softening of the tires, and a significant decrease in strength. Driving at high speeds under these conditions may result in a tire blowout. Hazards of high tire pressure: The friction and adhesion of the tires decrease, affecting braking performance. It can cause steering wheel vibration and deviation, reduce ride comfort, accelerate wear on the central tread pattern of the tire, and increase the risk of tire bulging or picking up stones. Excessive tire pressure can also overstretch the tire cords, reducing the elasticity of the tire body, increasing the impact experienced while driving, and amplifying road noise.
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Why Can't the Trunk Open After Snowfall?

Reasons why the trunk cannot open after snowfall are as follows: Linkage rod or lock cylinder issue: If you often use a key to open the trunk, the linkage rod may be broken. Go to a repair shop to open it. If you always use a remote control to open the trunk, the lock cylinder may be dirty or rusted. Spray some rust remover into the lock cylinder a few times to open it. Frozen or stuck: If the car was washed in winter, it might be frozen. In summer, something might be stuck. Not unlocked: The trunk is hard to open because it was not unlocked with the remote key. Trunk malfunction: The trunk itself may have issues, such as a broken wire or other problems causing the trunk to not open.
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How to Deal with Sludge on the Exterior of the Engine?

Sludge on the exterior of the engine should be treated with overheated steam. Here are the extended details: 1. First, remove the engine decorative cover. On many models, the plastic decorative cover is designed to enhance the aesthetics of the engine compartment. For thorough cleaning, it should be removed first. 2. Then, use a brush to remove dust and apply an engine surface cleaner to clean the engine compartment. The cleaner must be evenly sprayed on the engine surface, with a focus on areas rich in sludge. 3. After spraying the cleaner, wait a few minutes, then scrub with a brush, and the sludge will melt away. 4. Finally, rinse off the cleaned sludge with clean water. If you are unfamiliar with the task, use a small amount of water to minimize damage to the engine. The removed plastic decorative cover should also be cleaned.
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