solution:
Connected a jumper cable from ground to the engine, and the car fired up.
After some inspection, I discovered two ground cables mounted on the passenger side inner fender that looked corroded. I wire brushed the connector plate and the cable terminals, reconnected and the engine fired. I disconnected everything to test my theory, and no start. Reconnected and the engine fired up
I'd like to know what both ground cables feed. One cable I identified on realoem.com as part # 12-42-7-574-962 "interference suppression band" What does the other cable feed?
I've read issues about the ground cable to the starter motor, but I'm without ability to lift the vehicle at this time but will pursue.
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E92 M3 Manual
R8 V10 Manual / Audi Q5
Ducati Streetfighter 1098 / BMW R NineT Racer
Ducati Monster 796 / Ducati Bronco 1964
Railside Performance
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