1. Remove the battery cover..
2. Disconnect the negative battery cable..
3. Inspect for resistance and continuity between the seat warmer switch terminals using a tester.

If not as specified, replace the seat warmer switch.
Seat Track Position Sensor Removal/Installation [Two Step Deployment Control
System]
Seat Warmer Switch Removal/InstallationDrive mode select switch
The drive modes of the Subaru Solterra can be adjusted to match different
driving conditions, ensuring optimal performance, efficiency, and comfort.
Selecting a drive mode
By pressing the drive mode select switch, the Subaru Solterra cycles through
three distinct driving modes: Power mode, Nor ...
Antenna Feeder No.5 Inspection
1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Front scuff plate (RH).
b. Front side trim (RH).
c. Rear seat cushion.
d. Rear scuff plate (RH).
e. Tire house trim (RH).
3. Disconnect the antenna feeder No.4.
4. Disconnect the antenna feeder No.3.
...
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 ...