Depress the button on the seat belt buckle.

Fastening the Seat Belt
Seat Belt ExtenderStarter Cut Relay Inspection [MTX]
Advanced Keyless Entry And Push Button Start System Only
1. Disconnect the negative battery cable.
2. Remove the following parts:
a. Front scuff plate (LH).
b. Front side trim (LH).
c. Side wall.
d. Console.
3. Set the bonnet release lever out of the way..
4. Remove the lower panel.. ...
BSM (Blind Spot Monitor)
In the Subaru Solterra, the Blind Spot Monitor (BSM) is an advanced
safety feature that utilizes rear side radar sensors positioned behind the left
and right sides of the rear bumper to assist the driver in detecting vehicles located
in areas that are difficult to see using mirrors alone.
WAR ...
Variable Tumble Shutter Valve Actuator Inspection [Mzr 2.0, Mzr 2.5]
Operation Inspection
1. Remove the air hose..
2. Disconnect the vacuum hose from the variable tumble shutter valve actuator.
3. Connect a vacuum pump to the variable tumble shutter valve actuator.
NOTE:
Covered with a hood, the rod of the variable tumble shutter valve actuator
...