The price of a new unit is around $3500 ............ Sooo I thought nothing to lose here if I just pull it apart and have a nose around.
The late model 07 has a small abs unit nothing really technical like the previous models.
I had read on the net where the general concensus was the pump brushes stick therefore the pump doesn't work hence the light on the dash.
As a non repairable part I took the pump off very easily , getting it back on is another story, the motor is a small permenant magnet dc motor.
two clips and pull the armature and brushes come out together a quick spray of electrical cleaner check the bearings , the drive shaft is an off set which sits in a roller bearing which as it turns pushes two rods back and forth.
reasembled tapped down the motor retainers and reinstalled .. woohoo no dash light abs all good.
For a non repairable part I think if BMW had fitted 4 screws to hold the motor down a LOT of grief could have been averted. The small problem of sticky brushes can be fixed in a couple of hours. All of this can be done with the tools you have at home.
No I do not fix other peoples bikes.
Now if only my ute's dash light were that easy to fix
Only took you 2x months 
.......................AHEM.... Buy you a drink that is 
