The Diagnostic Module (DM) may only give you a partial picture of the problem. You will need to look at pin 8 and pin 14 as well by making your own diagnostic device. Search for this thread below...

E320 16 PIN DTC Charts

Then post your results....For starters, report the DM flash codes first....

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200 75 W115 (Mom's)
190e 90 2.6 W201
E320 95 Wagon W124
72 BMW 3.0 CSI