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 AdjusterMass Air Flow (MAF) Sensor/Intake Air Temperature (Iat) Sensor No.1 Removal/Installation
[Skyactiv G 2.0]
CAUTION:
Be careful not to hit the sensor element or allow foreign matter to get on
it during sensor removal/installation. If the sensor element is hit or foreign
matter gets on it, an error may occur in the sensor output signal resulting
in deterioration in the engine control.
...
Generator Inspection [Mzr 2.0, Mzr 2.5]
CAUTION:
Do not apply direct battery positive voltage to generator terminal D, otherwise
it could cause damage to the internal parts (power transistor) of the generator.
Generator Warning Light
1. Verify that the battery is fully charged.
2. Verify that the drive belt is correct. ...
Afs (Adaptive Front Lighting System) Control Module Removal/Installation
NOTE:
Perform the auto leveling system initialization after newly replacing the
AFS control module to assure that the auto leveling system operates correctly.
1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Passenger-side front scuff plate.
b. Pass ...