What's the reason for weak seat belt retraction?

[MacJace]

There are many reasons for weak seat belt retraction. The specific reasons are as follows: 1. Lack of lubrication in the seat belt: If the internal components of the seat belt lack lubrication, the seat belt may not retract or retract weakly. 2. Damaged seat belt retraction spring: If the retraction spring of the seat belt is damaged, the seat belt naturally cannot retract properly. 3. Foreign objects in the seat belt buckle: If foreign objects enter the seat belt buckle or the retraction opening, resistance may be created during retraction, leading to weak retraction. 4. Deformation of the seat belt's internal structure: If the car undergoes a severe collision, causing deformation of the seat belt's internal structure, the seat belt may not extend or retract properly.