after 15mins mine sleeps, and the draw is down to 50mA , but got it down to this after pulling out fuses until i hit upon a culprit that was causing a higher drain it was rear dc socket in the boot......also when i did some research many said the problem i had on my 3.0D was a faulty started motor draining too much amps on starting and eventually draining the battery , not sure at all if this is the case (although amp drain test showed it is high) , temps have jumped up and since that time and the time i removed the fuses that now disabled the draining dc socket in the rear, i don't have this slow crank issue anymore

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E53 X5 3.0d SUV prod.date 11/2004 eng.variant M57N Europe Right hand drive N