Had a loan forrester for a week while mines gone in for some bits, have to saying im really liking it. it's a 2.0 so doesn't have the power obviously, but driver really nice.
Seriously got me thinking about get one as a daily.
switch looks likley to be for rear fog light (not required in japan so they are fitted when imported) but short of pressing it and see what happens no way to be 100% sure, second one is a flare, take it out the car because its illegal in the uk. Just leave it somewhere safe at home.
newer cars do tend to drain the batterys quicker with all the gubbins on them as they say. if its going to sit for periods could look at getting a ctek battery conditioner, there only about £50 and they keep the battery topped up.
Pop down to your local county batterys, get them to give it a once over for a drain, make sure its charging properly and that the battery isn't duff.
If that all comes back as ok then prob as stated and just not getting enough milage to charge.