I have a 2009 with the ABS warning light on. Slammed on the brakes and the ABS is definately not kicking in. The 911GS says that the ABS pump is defective. I looked up the pump on the BMW website and it's over $2K. Could it just be an electrical problem. I'm about 4 hours away from the nearest "stealer" although I plan on getting there in the next couple of weeks. Is it just one pump for front and rear brakes? Any one else have any experience in the dept.