If I may jump in here, many cars have a fuse that protects the battery from a shorted alternator. I have looked up the fuse box diagram for the under-hood power distribution center, and there are several fuses that could potentially have something to do with this. I do not have the time right now to really narrow it down, so take a look at fuses 1, 2, 3, 5, 7, and 49. If they are blown and protect the alternator, they will keep the alternator from actually charging the battery. Then the battery has to run the car all by itself, and eventually goes bad doing so. The diagram is attached below.
Images (Click to enlarge)
Sunday, December 24th, 2017 AT 9:53 AM