What is BMW's Air Purification Function?

2 Answers
MaciFitz
07/24/25 12:22am
BMW's air purification function is a built-in car air purifier, which is a small household appliance product used to purify the air inside the car, mainly addressing the issue of air pollution in the vehicle. Usage Notes: The air purifier in the car has a coarse filter screen or dust collection net at the air inlet, which should be cleaned frequently and dried naturally after washing to avoid discharge sounds. Regular Replacement: When using the air purifier, pay attention to regularly replacing the filter element. The replacement time should be determined based on the actual usage time of the product. Keep Away from Respiratory Tract: The negative ions of the car air purifier are generated by simulating the principle of natural air ionization. They have a very short lifespan in the air, so the outlet should be as close as possible to the human breathing zone.
Was this review help?
3
1
Share
AlexDella
08/10/25 8:09pm
I picked up a new 5 Series last year and am particularly satisfied with this feature. BMW's air purification system is called the micro dust filter, which mainly uses a high-efficiency filter to remove contaminants from the outside, such as PM2.5, dust, and pollen. For someone like me who suffers from rhinitis, it's especially useful when driving during spring when pollen levels are high. The operation is simple—you can turn this purification function on or off separately in the central control air conditioning interface, and it can also display real-time air quality data. Another impressive aspect is that it comes with a negative ion generator, making it feel like you're bringing forest air into the cabin while driving. Especially during traffic jams, you can clearly feel that the air inside the car doesn't get stuffy. Long-term use has been quite beneficial for health.
Was this review help?
11
5
Share
Expand All
More Forum Discussions

Do rear seat passengers need to wear seat belts on highways?

Rear seat passengers on highways are required to wear seat belts. Article 51 of the Road Traffic Safety Law of the People's Republic of China stipulates that when a motor vehicle is in motion, both the driver and passengers must use seat belts as required. Seat belts must be worn regardless of whether you're in the front or rear seats. Drivers will be fined if passengers fail to wear seat belts. Nowadays, most vehicles, especially buses and sedans, are equipped with rear seat belts, so they should be worn. Below is an introduction about seat belts: 1. Function of seat belts: When a vehicle brakes suddenly during high-speed driving due to unexpected circumstances, proper use of seat belts can restrain drivers and passengers in their seats, avoiding or reducing collision injuries. This is mainly because during a collision, unbelted rear passengers may collide with front occupants - fatal consequences can occur at speeds as low as 50 km/h. If rear passengers wear seat belts, the mortality rate of front occupants can be reduced by 80%. 2. Consequences of not wearing seat belts: To encourage seat belt usage, regulations state that drivers not wearing seat belts while driving on highways or urban expressways will receive 2 penalty points per violation. The regulations also require that during travel, not only should drivers and front passengers wear seat belts, but rear passengers must also properly use them.
6
2
Share

Where Can I Replace My Car Key Battery?

You can either purchase and replace the car key battery yourself or have it replaced at a repair shop. Below is an introduction to the types of car key batteries: 1. CR2016 Button Battery: This type of button battery is highly prevalent in today's car key remotes, making it one of the most universal car remote batteries. These batteries have a voltage of 3V, and since most car key batteries operate on 9V, it's common to replace all three batteries at once. Examples include remotes for Honda, Toyota, Volkswagen, Mazda, and other models. The specifications for the CR2016 are: battery diameter of 20mm and thickness of 1.6mm. 2. CR2025 Button Battery: This type of button battery is used far less frequently than the CR2016. However, some car keys still utilize it. It is thicker than the 2016 but has a relatively higher storage capacity. The specifications for the CR2025 are: battery diameter of 20mm and thickness of 2.5mm. This type of battery is also commonly found in audio remotes. 3. Alkaline 12V Battery: The 12V alkaline battery was commonly used in early car key remotes and electric gates for shop shutters. Early Honda and Toyota models, among other older key remotes, often used this type of battery. Its characteristics include small size, high output voltage, and a longer remote control range.
1
0
Share

What Happens If the Spark Plug Model Doesn't Match?

Using the wrong spark plug model will inevitably cause knocking and overheating, leading to unstable engine speed or weak driving performance. Steps for replacing spark plugs: Open the engine hood, lift the plastic cover of the engine, remove the high-voltage distributor wires, and mark each cylinder's position to avoid confusion. Use a spark plug socket to remove the spark plugs one by one. While removing them, check for external debris like leaves or dust and ensure they are cleaned thoroughly. Place the new spark plug into the spark plug hole, hand-tighten it a few turns, and then use the socket to tighten it further. Reinstall the removed high-voltage distributor wires in the firing order, then secure the cover. If the spark plug is damaged, it can directly cause issues like electrical leakage in the vehicle's ignition system, increased fuel consumption, reduced power, and most importantly, difficulty in starting, affecting the vehicle's normal operation. Severe spark plug erosion, such as scarring at the tip, broken or melted electrodes, or burn marks, indicates that the spark plug is damaged and should be replaced.
7
0
Share

Can China V Diesel Vehicles Still Be Registered Now?

Used China V diesel vehicles can still be registered, but new ones cannot unless registered in cities without restrictions. However, driving with an out-of-town license plate in restricted cities comes with many limitations. Both new and used China V vehicles will be unable to register or transfer registration. For diesel vehicles to be registered, in addition to meeting the China VI emission standards, they must also be equipped with a DPF collector according to current regulations. In other words, diesel vehicles must meet both the 'China VI + DPF' standards to be registered. Here are some issues to note when completing the registration of used vehicles before the China VI deadline: 1. Vehicle modifications: Vehicles with additions, modifications, or replacements cannot be registered. 2. Vehicle information: Vehicles with unresolved violation records, expired annual inspections, or outdated vehicle documents cannot be registered. 3. Vehicle age: Vehicles that are too old to be transferred will also be unable to be registered due to technical reasons.
6
0
Share

How to Turn Off the Engine?

Simply bring the car to a stop, then shift the gear to neutral (for automatic transmission cars, shift to P), press the one-touch start button to turn off the engine, and finally engage the handbrake. The detailed steps are as follows: 1. Press the clutch and brake pedals: Simultaneously press the clutch and brake pedals until the vehicle comes to a complete stop, then shift the gear to neutral. 2. Press the one-touch start to turn off the engine: Press the one-touch start button to turn off the engine, engage the parking brake, and then release all pedals. At this point, the engine shutdown is complete. 3. Important notes: Do not press the brake pedal abruptly, as this may cause the engine to stall due to the traction force from the gear, potentially damaging the engine. Always engage the handbrake to prevent the car from rolling.
14
5
Share

What to Do About Engine Cylinder Scoring?

Engine cylinder scoring treatment method: Replace the cylinder block and piston. Engine cylinder scoring is a very serious engine failure, referring to deep grooves being scraped into the cylinder wall, causing the piston, piston rings, and cylinder wall to lose their sealing properties due to friction. This results in reduced cylinder compression pressure and loss of power. If cylinder scoring symptoms persist and continue to be used, the condition will only worsen. Below are the causes of engine cylinder scoring: 1. Engine cooling system failure: Overheating due to leaks, water shortage, and failure to replenish coolant in time. 2. Engine oil level too low: Leading to loss of cylinder sealing and lubrication function. 3. Piston ring damage: Broken piston rings scratch the cylinder wall. 4. Piston pin retaining ring detachment: Detached piston pin retaining rings can scratch the cylinder wall. 5. Use of poor-quality fuel: Poor-quality fuel can cause cylinder scoring. 6. Piston pin protrusion: Protruding piston pins can scratch the cylinder wall. 7. Foreign object entry: Foreign objects entering the cylinder can cause scoring. 8. Insufficient clearance: Too small a clearance between the piston and cylinder wall leads to scoring. 9. Over-tight assembly: Over-tight piston pin assembly causes piston deformation.
7
1
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.