new to BMW 323i, and first time joining group. had service engine soon light, come on and car was running not well at idle . went to autozone and borrowed code reader, error was #3 cylinder missing, changed plugs, seems to be running much better but light is still on, on oth er cars I have had the service engine soon light could be cleared but I hav e not read anything about that in owners manual. does light reset automatically (maybe after some # of starts) ? does anybody have a e-copy of service manual?