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99 540 check engine light on again after service m (archive)
[ Follow Ups ] [ 5-series (E39) Message Board ] [ Msg. Board FAQ ]
Posted by BMW5 on September 03, 2000 at 15:49:30:

After bringing in my 540 for the "check engine light" that they first thought went on because of not securing the gas cap, and instead they had to UPDATE DME, its back on again. What is wrong. I know that people had problems like this and it was the cat. converters. When I take it back, what should i suggest. What did updating DME do? thanks in advance.

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