Disabling the Daytime Running Lights (DRL) on an '06-09
Please note that these instructions were originally posted on Club4G.org by "Shapdog." We have recreated the post here for the purpose of preservation. The original thread is posted here: http://club4g.org/board/electronics/658-how-disable-day-time-running-lights-drl.html
Pop out the ECU (Red).
Remove or bend the this connector so it does not establish a connection when you pop the ecu back in place. (I bent it so I could always bend it back to normal position). Follow the patter on the bottom of the ecu to make sure you bend the right connector.
I did this a few months ago. The DRL's are finally disabled. No thrown codes.. the only thing that also gets disabled I observed is when I unlock the car.. the turning signals dont flash. Not that important nonetheless
*For others who have done this... Let me know if when you unlock the car this happens... I'm curious if this is it or its from something else.