| which codes are you speaking of? which lights? my 1988 325iC has more freaking warning blinking lights than I need. and that's on the overhead panel. there are the other dash mounted indicators as well...not to mention the actual analog gauges that might tell something...I don't know..what I do know is that a Motronics 1.1 will shut the check engine light off by itself once you clear the problem....it absolutely will.....I have seen it twice myself....I have never seen nor heard of any other engine management system that is so honest....this damn this WILL reset itself if you fix the problem and run the engine for a couple minutes to its (the controller) satisfaction....it will do that...good luck | 
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