2. Find the wiring of the car seat after disassembly, and disassemble the induction wire of the safety buckle.
3. Remove the seat cushion, remove the seat airbag (when removing the seat airbag, it is best to disconnect the negative electrode of the battery first to prevent the airbag from being detonated by static electricity during disassembly), then remove the bolt for fixing the seat belt, and then remove the seat belt slot.
4. After removing the seat belt slot, remove the sensor in the seat cushion, then install a new seat belt slot on the seat, connect the wiring and tighten the bolt.
5. Install the weight sensor and the new tractor on the seat and tighten it with a wrench.
6. Pull out the seat belt, insert it into the slot, and see if the check card slot can lock the traction belt, then reverse the previous disassembly steps and reinstall the seat.
In addition, the drawstring of the safety belt should be checked or replaced regularly. Slots usually need to be replaced when they are not locked or unlocked, but the replacement of drawstring is relatively complicated.