Hi! I have an '08 with about 150,000 miles on it. Last year battery would die constantly, after 3 new ones and a good alternator I stopped engaging the car alarm and would lock the car doors as soon as I got out to make sure the dome lights went off and that seemed to do the trick. Also this past year my lights for the dash and radio will get very dim while driving, I'll hear a click and then they'll be back to normal. Just a few days ago I was on the highway when all of the dash warning lights came on, speedometer dropped to 0 and said to check the charging system, went off after a few minutes, came back on a few minutes later for about 5 minutes then went away, I turned off my radio and heater and tried to dim the car lights but they seemed not to dim at all. Went to start the car the next day, had to manually open with the key, nothing in car worked and car would not turn over and did not have the "click" when trying to turn over (didn't have time to try and jump it yet). Does this seem more electrical or like the alternator? Don't went to spend a fortune to have it "fixed"