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  1. E39 (1997 - 2003)
    I have a 2000 528i and noticed that if you hold the trip reset switch while the car is in the 2nd ingnition position - I can choose from about 21 test sequences. Most seem to do nothing while others allow me to select a sub test (2.1, 2.2, 2.3, etc.). Is there a listing to what these test are...
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