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 AdjusterPCM Inspection [Mzr 2.0, Mzr 2.5]
Using M-MDS
NOTE:
PIDs for the following parts are not available on this model. Go to the appropriate
part inspection page.
CMP sensor
Main relay
1. Connect the M-MDS to the DLC-2.
2. Switch the ignition to ON.
3. Measure the PID value.
...
Aerodynamic Under Cover No.2 Removal/Installation
Except SKYACTIV-G 2.0
1. Lift up the vehicle.
2. Remove the fasteners and bolts.
3. Move the aerodynamic under cover No.2 in the direction of the arrow shown
in the figure and remove it.
CAUTION:
Be careful not to damage the aerodynamic under cover No.2 during removal.
4. ...
When charging cannot be carried out
If charging of the Subaru Solterra does not begin even after correctly
following the standard procedure, carefully review each of the following checks.
If any notification appears on the multi-information display, it should be used
as the primary reference for identifying the issue.
When char ...