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 AdjusterStarter Interlock Switch Inspection [Mzr 2.0, Mzr 2.5]
CAUTION:
Do not reuse the starter interlock switch if it is removed from the vehicle
even once. Replace with a new starter interlock switch when installing.
1. Remove the battery cover..
2. Disconnect the negative battery cable..
3. Disconnect the starter interlock switch connec ...
Joint Shaft Disassembly [Skyactiv G 2.0]
1. Disassemble in the order indicated in the table.
1
Snap ring
2
Joint shaft component
.
3
Dust seal
4
Bearing
5
Dust cover
6
...
Drive Belt Removal/Installation [Mzr 2.3 Disi Turbo]
1. Remove the aerodynamic under cover No.2 and splash shield as a single unit..
2. Rotate the drive belt auto tensioner in the direction shown in the figure
and remove the drive belt.
3. Install the drive belt.
4. Verify that the drive belt auto tensioner indicator mark does not exceed ...