1. Disconnect the negative battery cable..
2. Disconnect the connector..
3. Verify the resistance between bass-box terminals.

If not within the specification, replace the bass-box.

0.9—1.1 ohms
Auxiliary Jack/Usb Port Removal/Installation
Bass Box Removal/InstallationBuckle Switch Inspection
Driver Side
1. Switch the ignition to off.
2. Disconnect the negative battery cable..
3. Remove the front seat..
4. Remove the front buckle..
5. Inspect for continuity between the buckle switch terminals using a tester.
If not as indicated in the table, replace the driver sid ...
For safe driving
For optimal safety in your Subaru Solterra, always adjust your seating
position, mirrors, and driving posture correctly before starting your journey.
Correct driving posture
Adjust the seatback angle so that you sit upright comfortably without needing
to lean forward while steering y ...
Precaution
Intermittent Concern Troubleshooting
Vibration method
If a malfunction occurs or becomes worse while driving on a rough road or
when the engine is vibrating, perform the following steps.
NOTE:
There are several reasons why vehicle or engine vibration could cause an
electr ...