I just completed a radiator replacement on a 2009 R3 (Series II.) Everything seems good except my DSC and ABS lights are on. Also, the ABS is not functioning. I sometimes see the DSC light on after a battery disconnect, however, a restart, or drive and restart usually solves it.

Does anyone know if there is a connector that gets separated for the DSC and ABS when doing the radiator replacement? I am wondering if I missed reconnecting a connector, but am not sure where to look. I recall two connectors on each side of the plastic undertray (are there more than that and did I miss one?) Also, there were four connectors that I recall on the fan shroud. Two for the fans, and two big grey connectors near the top. I believe I put those all back.

Any insight is appreciated.

 

Resolved. I checked the OBDII reader and it displayed a code indicating an open circuit on an ABS sensor. I removed the left front fender liner to look at the connectors attached to the undertray side pieced (fun stuff.) No love.

I removed the right side, and voila! The connector attached to the undertray side piece was not seated. When I plugged it in fully, both the DSC and ABS lights went out.