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/InstallationScheduled 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
...
LDA (Lane Departure Alert)
Basic functions
In the Subaru Solterra, the Lane Departure Alert (LDA) system is designed to
assist the driver by monitoring the vehicle’s position relative to lane markings
or road boundaries*. When the system detects a potential deviation, it provides
timely warnings and can also apply ge ...
Trunk Lid Latch Switch Inspection
1. Disconnect the negative battery cable..
2. Remove the trunk lid trim..
3. Remove the trunk lid latch and lock actuator..
4. Press the latch in using a flathead screwdriver to inspect the latch lever
condition.
5. Verify that the continuity is as indicated in the table.
I ...