Terminator,
Thanks for your reply.

I can only answer a couple of your questions
Battery: Had the battery discharge on me last year but that was due the DICE silverline pro not shutting down. Took the battery to Battery Plus and they tested and said the battery was good.
Plugs and coils are originals I believe and never replaced.
Fuel delivery system - No idea on how to check the state.

Also, I don't thing my X has the auto-crank feature.

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06 X5 3.0i