I have no idea how old my starter or alternator is, and I'm wondering which would lead to starting troubles. I replaced the battery just recently, and experienced no starting issues for the week following. But now it seems the K5 has trouble starting (slowly turns as if the battery is weak), especially later in the day. It's not overly warm, so I heat shouldn't be an issue, but maybe a weakened starter is more sensitive. Can anybody shed light on the issue before I go out and replace both my alternator and starter?