1. Disconnect the brake fluid level sensor connector from the master cylinder.
2. Inspect for continuity according to fluid level between the brake fluid level sensor terminals.

If not as indicated in the table, replace the reserve tank.

Brake Switch InspectionFront Seat Cover Removal/Installation [Vehicles Without Power Seat System]
WARNING:
Handling a front seat (with built-in side air bag) improperly can accidentally
operate (deploy) the air bag, which may seriously injure you. Read the service
warnings before handling a front seat (with built-in side air bag)..
CAUTION:
After removing a front seat ...
HomeLink Wireless Control
System*
NOTE
HomeLink and HomeLink house are
registered trademarks of Johnson
Controls.
The HomeLink system replaces up to
3 hand-held transmitters with a single
built-in component in the auto-dimming
mirror. Pressing the HomeLink button on
the auto-dimming mirror activates garage
doors, gates and ...
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 ...