545i Randomly Not Starting - no crank, no start
08-06-2010, 02:45 PM
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Join Date: Apr 2010
Location: Las Vegas, NV
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My Ride: Present--'04 545i- Premium, Sport and Comfort Seat Packages; Aux Input Cable, Staggered RFT Tires, 65K miles as of 04/10, 6-Speed Manual, Active Headlights, L7 Audio, Auto Sunshades
Past--(FIRST CAR EVER OWNED)--1981 318i Euro Specs
I had the exact same problem as you. Random starts and no starts. I understand your frustration!!!! My problem was the IBM module. Basically the main brain for the vehicle was bad. It would not send a fault code either. I would consider that as a factor, not that the other things are not wrong, you could have two problems. Another thought, is to check the signal strength the key is sending out. If you have two keys, you may want to switch out and see if that solves your problem first.
Good luck
Good luck
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