What Causes the BMW X3 Particulate Filter to Clog?

1 Answers
GiselleDella
07/30/25 10:41am
BMW X3 particulate filter clogging can be caused by particulate filter malfunction or poor fuel quality. Particulate filter malfunction: You can try revving the engine while stationary to burn off impurities in the particulate filter. If the particulate filter is damaged, the catalytic converter needs to be replaced, which is done free of charge at authorized 4S dealerships. Poor fuel quality: If low-quality fuel is used, incomplete combustion occurs, leading to increased particulate emissions that clog the particulate filter. Switching to higher-quality fuel can resolve this issue. The treatment methods for diesel and gasoline vehicle particulate filter clogging differ as follows: For diesel vehicles: Simply press the regeneration button in the car. The engine will then increase RPM while stationary, typically taking about ten minutes to clean the particulate filter and resolve the clogging issue. For gasoline vehicles: The driver should first shift the car into S mode, then drive at high speed for a period. During high-speed driving, the exhaust pipe temperature rises, burning off the clogged particles in the particulate filter, thereby solving the blockage. If the particulate filter clogging is particularly severe and the above methods don't work, the filter can be taken to an auto repair shop or 4S dealership for professional cleaning with specialized equipment.
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