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 AdjusterBlower Motor Removal [Full Auto Air Conditioner]
NOTE:
The blower motor is located on the A/C unit as shown in the figure.
Perform the work from the front passenger side in the posture shown in the
figure.
1. Set the air intake mode to FRESH.
2. Disconnect the negative battery cable.
3. Remove the following ...
Air Filter Removal/Installation [Skyactiv G 2.0]
1. Remove the fuel-filler pipe protector..
2. Remove in the order indicated in the table.
1
Evaporative hose
2
Air filter
3. Install in the reverse order of removal. ...
If You Must Use the Front Seat for
Children
If you cannot put all children in the rear
seat, at least put the smallest children
in the rear and be sure the largest child
up front uses the shoulder belt over the
shoulder.
NEVER put a rear-facing child-restraint
system on the front passenger seat whether
your vehicle is equipped with a ...