the rust is pretty normal for a toronto car i guess...
repairable, but I sold my 540 in great shape for 7k...
so 4k for that seems too much.
my interior was as good or better and it had a rebuilt tranny and full AC redo.
If I remember right, my headlight switch could be left on and no lights would remain when you pulled the key (unless u were set in parking lamp mode, not headlight.)
Could be a daytime running light option, I say: IT IS NORMAL!!
But the car is overpriced unless the maintenance is perfectttttt (based solely on the appearance of the car, I doubt it is!)
Keep us updated, good luck. (you should have taken mine

)