A lot of the '08's had that problem and many got new batteries along with the 2.0 transmission upgrade. I think the ones with the comfort package and/or the alarm get the new, heavier duty, battery. But, I'm not really sure of the criteria to qualify for the replacement. (Mine got a new battery even though I'd never had a problem with the old one. )I would think that a call to any dealer could get you that info and, with your VIN, they could tell you if yours qualifies and/or has had the upgrade already.