Because the antenna system is equipped with a capacitor, the continuity cannot be checked. Therefore proceed the following simple inspection.
Turn the AM radio on.
Tune to the frequency that there is no broadcast and you will hear a buzzing sound.
Turn a work light on and shake it around the antenna rod. (around 10—20 mm {0.40—0.78 in})
CAUTION:
Use a fluorescent light type for the inspection. Accurate diagnostic cannot be done with a different type of light.

If a whirring sound from the speaker synchronized to the work light movement is confirmed, the antenna system is normal.
Coil Antenna Removal/Installation
Entertainment Personalization Features Setting ProcedureScheduled Maintenance (U.S.A., Canada, and Puerto Rico)
Follow Schedule 1 if the vehicle is operated mainly where none of the
following conditions
(severe driving conditions)apply.
Repeated short-distance driving
Driving in dusty conditions
Driving with extended use of brakes
Driving in areas where salt or other corrosive materials are used
...
SRS airbags
The SRS airbag system in the Subaru Solterra is engineered to deploy
during specific types of severe impacts that may otherwise cause serious harm to
vehicle occupants. These advanced airbags function in combination with seat belts
to significantly reduce the risk of fatal or severe injuries.
...
Electric Vehicle system features
The Subaru Solterra represents a new generation of mobility, where
battery electric vehicle technology significantly differs from traditional gasoline-powered
vehicles in both operation and driving experience.
Instead of relying on internal combustion, the Subaru Solterra uses
energy stored i ...