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/InstallationMotor compartment
Components
Heater coolant reservoir
Washer fluid tank
Power control unit coolant reservoir
12-volt battery
Brake fluid reservoir
Fuse box
Radiator
Condenser
Electric cooling fan
Checking the heater coolant
In the Subaru Solterra, the heater coolant level should always b ...
Mounting the Spare Tire
Remove dirt and grime from the
mounting surfaces of the wheel and
hub, including the hub bolts, with a
cloth.
WARNING
Make sure the mounting surfaces of
the wheel, hub and lug nuts are clean
before changing or replacing tires:
When changing or replacing a tire,
...
Remote Air Conditioning System
In the Subaru Solterra, the Remote Air Conditioning System utilizes
energy stored in the traction battery to allow the climate control system to be
activated remotely, providing a comfortable cabin environment before entering the
vehicle.
When the Subaru Solterra is connected to a charging ...