It is NOT the rear entry
It is NOT the rear entry light that is draining the battery. Even with the light off an open rear hatch draws from 2 to 4 amps of current that runs down the battery. Subaru says this is normal and so far has not adequately addressed owners concerns. Many owners leave their hatch open at dog shows or camping and end up with dead batteries as a result. A more capacity battery helps but does not correct or solve the problem. The constant 2 to 4 amp draw when the hatch, or any other door or hood is open is the problem. There is a Facebook site dedicated to this issue also.