Van came in not running from flat battery replaced battery and van ran fine. Came back the next day with same problem so removed alt and had it serviced also had the starter checked at the same time. Changed positive batt connection as it was rotten van is still discharging while running with the dims/headlights on. changed batt again just in case plugged in diagnostics no fault codes. Battery warning light goes out when started but still nothing anyone came across a problem like this before.