Last week my 12v battery failed and I needed a jump start. Well, I had no problem for a week. Now my maintence needed light is on, and just tonight the transmission jumped violently when changing from park to reverse, then again from reverse to drive. When driving there was no noticeble problem. Could the low/dead 12v battery be the cause of the "transmission" problem. And also, is the maintence light on simply because of the 60,000 mile scheduled update? Thanks for help, and if you have any questions regarding clarity let me know.