Except rear center seat belt

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.

Verify that the belt can be pulled out smoothly, and that it retracts smoothly.

Courtesy of MAZDA MOTORS CORP.
- If there is any malfunction, replace the seat belt. (See FRONT SEAT BELT REMOVAL/INSTALLATION .) (See REAR SEAT BELT REMOVAL/INSTALLATION (US) .) (See REAR CENTER SEAT BELT REMOVAL/INSTALLATION .)
Verify that the retractor locks when the belt is pulled quickly.
- If there is any malfunction, replace the seat belt. (See FRONT SEAT BELT REMOVAL/INSTALLATION .) (See REAR SEAT BELT REMOVAL/INSTALLATION (US) .) (See REAR CENTER SEAT BELT REMOVAL/INSTALLATION .)
Remove the retractor. (See FRONT SEAT BELT REMOVAL/INSTALLATION .) (See REAR SEAT BELT REMOVAL/INSTALLATION (US) .) (See REAR CENTER SEAT BELT REMOVAL/INSTALLATION .)
While pulling the seat belt out, verify that the seat belt does not lock when the retractor is tilted slowly up to 15° from the mounted position and locks when the retractor is tilted 40° or more.

Courtesy of MAZDA MOTORS CORP.

If there is any malfunction, replace the seat belt. (See FRONT SEAT BELT REMOVAL/INSTALLATION .) (See REAR SEAT BELT REMOVAL/INSTALLATION (US) .) (See REAR CENTER SEAT BELT REMOVAL/INSTALLATION .)