[Will 335]

So the car starts just fine when cold and when left alone for over an hour. However, it won't start, for example, if I drive to a store and stay for a bit then drive to another store and stay for about half an hour. No crank but all lights and electronics work. I have to leave it there for over an hour for it to barely crank. Can't really figure out why. Also, sometimes on cold start all the ABS and transmission lights will come on. I turn it off then on and they go away and the car runs just fine. Very odd to me. My guess (and hope) is that I just need a new battery but I've heard it could be IBS or my starter. Thanks for looking.