What is the reason why the BMW seat belt cannot be pulled out?
2 Answers
BMW seat belt cannot be pulled out due to damage or jamming inside the seat belt buckle. The function of the car seat belt: When the vehicle collides or uses emergency braking, the pre-tensioning device will instantly tighten the loose seat belt, firmly securing the occupant to the seat to prevent secondary collisions. Once the tightening force of the seat belt exceeds a certain limit, the force-limiting device will appropriately loosen the seat belt to maintain stable chest force. Therefore, the car seat belt plays a role in restraining displacement and cushioning, absorbing impact energy, dissipating inertial force, and avoiding or reducing the degree of injury to the driver and passengers. The working principle of the seat belt: The spiral spring rotates the reel to keep the seat belt tight, and the crumple zone is the relatively easy-to-collapse area at the front and rear of the car. When the car hits an obstacle, it does not stop suddenly, but absorbs part of the impact force through crumpling (like an empty soda can).
Last time I took my BMW out for a drive, I couldn't get the seatbelt to release when parking, which made me sweat with anxiety. I tried pulling it several times with all my strength, but it wouldn't budge. Later, I realized the seat was adjusted too far back, causing the seatbelt strap to get stuck in the gap between the seat and the B-pillar. Simply moving the seat forward a bit loosened it right away. BMW's seatbelt buckle is designed to be very secure to protect you in an accident, but in daily use, it can get clogged with dust, small objects, or food crumbs. It's even more troublesome in winter when condensation freezes, making it hard to pull out—you need to patiently wait for the car to warm up or gently blow warm air on it. I remember a friend's old BMW had the same issue once, and it turned out the buckle's internal spring had aged, requiring a trip to the repair shop for a replacement part. To prevent this, I regularly clean the buckle area with a soft brush and check if the buckle releases smoothly before driving to avoid distractions while on the road. Safe driving comes first—if you encounter issues, seek professional help promptly instead of forcibly yanking and damaging the pretensioner system.
