I just posted one fix for bogus warning lights (replaced tach), but I still have one more issue. My 2006 R53 has a constant ABS warning light on the tach, and a tire pressure and ASC warning light on the speedo cluster. I have traced wiring/grounds, replaced all 4 wheel speed sensors and checked fuses. No luck. At one point those warning lights would come on and clear, but with the tach causing all the warning lights to flash intermittently, I don't know what was real and what was related to that fault. The warning lights stay on all the time now. I have reset the ECU, disconnected the battery and reset codes with a code reader - no change.

I have had DTC codes P1612, P1613 and P1607 previously - no codes active or pending now. I checked the cabling and connector on the ABS pump and did not see anything obvious. Does anyone know where the controller is for the ABS/ASC system? I found the box in the attachment dangling above the fuse box, but no identification that I can find. Any help would be greatly appreciated. Thanks.

Tom

ABS/ASC Controller?