Probably KWS and other problem

Hello, I’m new here in this forum and since the proud owner of an Omega B 2.0 16V Caravan EZ 08/99. I bought the naturally used one. Timing belts were changed / oil change and TÜV/HU new. When I had the first time parked and wanted to start again after 3 min, he hit the MKL a little bit and made out the engine with caution. Since I could not stop there I started the engine again after a short time and ran without problems. Now is nat normal before I start the engine constantly the MKL. After the start you go out immediately and are not really problems to recognize. The typical stand gas problems it has only very rarely and it has not gone out yet. Does only very rarely happen that the speed goes times under 500. I will still get to the clean up .. Now the MKL lights up regularly before the start. Does this mean that only one error is saved or is the error still present? Can you keep this in mind? I don’t have a manual there. Which lamps should all light up before the start after the self-check has run through. E.g. the oil lamp lights before the start. after the start it goes out. Is this normal? Does anyone possibly have a manual in digital form or does anyone come from near Rostock? Many thanks for your answers in advance. Are there certain more questions aso .. of course have read out the error 0335 and also used the search function. Unfortunately did not answer my questions.