I am now leaning towards starter motor brushes. I got a lift to work today and before leaving tried to start it. Same deal, ignition lights, no crank. I then got the wheel nut spanner out of the back and used it like a hammer and gave the starter a couple of hits on the side. I then, tried starting the x5 and she bursts into life. Got it home and will pull the starter out tomorrow as I now have 4 days off.

Will keep you posted.

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2004 E53 diesel.
Titan silver on black
Sports package