Hi Eric,

THe MB isn't my primary transportation, however I drive it for trips longer than twenty or so miles and trips out of the area to visit friends in southern Oregon. The beer store is less than a mile away. Grocery getting is an eleven mile turnaround.

RIght after I posted a response, and knew the location of the module I disconnected it. The drain disappeared.

The module is available OE, remanned and used. OE from the Fatherland $1500, re-manufactured, exchange from ProgRama $195, and finally, eBay (where else?),prices ranging from $60 to $159.

I found a module at BMW All Parts for $60 plus shipping. If the used one doesn't work, I'll send it in for repair. Not cheap but not the end of the world.

I hope this information along with your contribution helps another owner experiencing the same problem.

Tony