Depress the button on the seat belt buckle.
If the belt does not fully retract, pull it out and check for kinks or twists. Then make sure it remains untwisted as it retracts.

NOTE If a belt does not fully retract, inspect it for kinks and twists. If it is still not retracting properly, have it inspected at an Authorized Mazda Dealer.
Fastening the Seat Belt
Front Shoulder Belt AdjusterFire Extinguisher Installation [Arab Gulf Cooperation Council]
WARNING:
Handling a front seat (with built-in side air bag) improperly can accidentally
operate (deploy) the air bag, which may seriously injure you. Read the service
warnings before handling a front seat (with built-in side air bag)..
CAUTION:
After removing a front seat ...
Cowl Panel Removal/Installation
1. Disconnect th negative battery cable..
2. Remove the windshield wiper arm and blade..
3. Remove the front fender molding..
4. Remove the cowl grille..
5. Remove the washer hose grommet from the cowl panel and disconnect the front
washer hose.
6. Remove the windshield wiper motor..
7 ...
Shroud Panel Removal/Installation
CAUTION:
Because the shroud panel is installed to the bumper reinforcement, support
the shroud panel using a jack before removing the bumper reinforcement so as
not to apply excessive force to the shroud panel.
Since the servicing is performed with the hood open, secure the hoo ...