I purchased a 2012 Audi diesel when I was living in Texas and now I am back living in Iowa. I got a new battery three months ago, and I am having trouble getting it started, and the only reason I can sort is due to the cold. Oddly enough, this morning when it was 23 degrees, she fired right up. But now, no such luck. Any tips on having a diesel in a colder area? I thought that diesel cars were over this issue, but perhaps I am wrong.