See also:

Other bulbs
Other bulbs may be difficult to replace. We recommend that you have the bulbs replaced by your SUBARU dealer if necessary. ...

For AT models
This light flashes if the vehicle is driven with tires of different diameters fitted on its wheels or with the air pressure excessively low in any of its tires. ...

Rear seats
Rear seats Seatbelts provide maximum restraint when the occupant sits well back and upright in the seat. Do not put cushions or any other materials between occupants and seatbacks or seat cushion ...