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 AdjusterMagnetic Clutch Inspection [Full Auto Air Conditioner]
1. Connect battery to terminal A of magnetic clutch and ground to A/C compressor
body.
SKYACTIV-G 2.0
MZR 2.3 DISI Turbo, MZR 2.5
2. Verify that the magnetic clutch operates.
If there is any malfunction, replace the magnetic clutch.
...
PID/Data Monitor Inspection [Bcm]
1. Connect the M-MDS (IDS) to the DLC-2.
2. After the vehicle is identified, select the following items from the initialization
screen of the IDS.
a. Select “DataLogger”.
b. Select “Modules”.
c. Select “BCM/GEM”.
3. Select the applicable PID from the PID table.
4. Verif ...
Antenna Amplifier Inspection
1. Disconnect the negative battery cable..
2. Remove the rain sensor cover. (Vehicles with auto light/wiper system).
3. Disconnect the rain sensor connector. (Vehicles with auto light/wiper system)
4. Partially peel back the seaming welts.
5. Remove the following parts:
a. Sunroof seaming ...