A little dissapointed really, I thought I had narrowed it down to one specific sensor. Tested the all the sensors at the module with a Diode Multimeter:
Left Rear - approx 2 one way OL the other (great)
Right Rear - .124 one way and .134 the other (wtf!)
Left Front - OL and OL (Dead sensor? )
Right Front - OL and OL (Huh?, 2 dead sensors?)
Initially I though 'great'; as 5 series models supposedly with ASC (not DSC) only have two sensors (Right front and Rear Left) I could be on a winner eg the Right front is faulty, so I checked it at the wheel, still OL and OL - then I thought Ill just check to ensure that there are only 2 sensors on the car, I had a look at the Left front . . . theres a sensor there!!? I find it hard to believe that 2 sensors went @ axactly the same time. I checked both front sensors at the wheel and the module with OL both ways . . . what gives? Are they both faulty, but only 2 out of the 4 are actually required for my car? I dont get it.
I have an indy that will be looking @ it in a weeks time.
Do all cars with ASC and DSC have 4 sensors, but the cars with ASC use only 2 out of the 4?