I am driving a 2003 VW Jetta Wagon GLS automatic which I bought new. The 26,000 miles on it are almost all driving the stop-and-go hills-and-dales of San Francisco. During the past two years it’s started an erratic behavior: as it accelerates from 2nd into 3rd, the car sometimes kicks/lurches. But only occasionally. The dealer was unable to reproduce this kick. Their diagnostics say the transmission is behaving normally but tests noted the battery load charge results are not quite right. Acknowledging that they don’t know what the problem actually is, they recommend replacing both components. A $970+ repair – and then recheck for this fault. Anybody got experience or advice to offer on this one? How bad/dangerous is this situation?