The only why to repair the seat belt (retractor) is to replace the assembly,no parts are available to rebuild this assembly.
how do you replace seatbelt retractor on a 2000 chevy blazer
replave retractor
Pull the vinyl cover off of the seat belt, then roll the seat belt back on the roller.
ELR - Emergency Locking Retractor..Seat Belt Retract you when you face collision.
You will probably end up having to replace the belt as I don't think there is a way to tighten it.
bad retractor
To fix a rear seat belt on a 1998 Ford Explorer, first inspect the belt for any visible damage or obstructions. If the belt is tangled or stuck, carefully untangle it and ensure the retractor mechanism is functioning properly. If the belt is frayed or the retractor is faulty, you may need to replace the entire seat belt assembly, which involves removing the mounting bolts and disconnecting the wiring if it’s equipped with a pretensioner. Always ensure that any replacement parts are compatible with your vehicle.
To replace the rear seat belts in a 2004 Honda Element, start by removing the lower seat cushion by pulling it up and out. Next, unbolt the seat belt anchors using a socket wrench; there will typically be bolts at the floor and possibly at the vehicle's side or wall. Carefully detach the seat belt from the retractor and replace it with the new belt, ensuring all components are secured properly. Finally, reassemble the seat cushion and test the functionality of the new seat belts for safety.
there is a recall for this
These parts are only fixed by replacement.
To fix a car seat belt in a Mazda, first inspect the belt for any visible damage or obstruction. If the belt is stuck, gently pull it to see if it retracts properly; if not, check for twists or debris in the mechanism. For malfunctioning retraction, you may need to remove the seat belt assembly and clean or replace the retractor. If issues persist, consult a professional mechanic for further diagnosis and repair.