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 ProcedureDriving the vehicle
To ensure safe, smooth, and efficient operation of the Subaru Solterra,
it is essential to follow the recommended driving procedures and precautions outlined
below.
Driving procedure
■ Before starting the EV system
Before activating the Subaru Solterra EV system, always confirm that the cha ...
Headlight Leveling
The number of passengers and weight of
cargo in the luggage compartment change
the angle of the headlights.
Auto type
The angle of the headlights will be
automatically adjusted when turning on
the headlights.
The warning/indicator light turns on when
the system has a malfunction.
Refer ...
Seat Belt Warning Beep
If the driver's seat belt is not fastened
when the ignition is switched ON, a beep
sound will be heard for about 6 seconds. If
the driver or the front passenger's seat belt
is not fastened and the vehicle is driven
at a speed faster than about 20 km/h (12
mph), a beep sound will be heard again ...