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General Discussion / Re: 2021 450i UXV
« on: July 27, 2024, 11:15:11 PM »
Ignition switch tested fine. I have one relay that I can't figure out. It is a 3 pronged D421 small looking relay. Can someone tell me what this controls? Also, when you turn on ignition switch, it sends power to the fuel pump for one second and then power drops off.