[aksk]

first of all you need to give us more info about the car and DTC. 
what sensor did you change camshaft? crankshaft?

yeah right
the crankshaft sensor
also the faults are exactly
(dde error program)
and crankshaft sensor faulty
so i change the dde and program her
and i replace the crankshaft sensor with a new one
also everything else running pretty good
injector and etc!!!

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base on info that's provides now, it sounds like CPS sensor ( easiest way to test, get big bottle of water (1GL/5 Liters) Once your X5 got hot pure water on back of engine where sensor is located at, if your car starts, go ahead and replace it.) Similar to EVERY mercedes, Also to double check during cracking of an engine check if your RPM gauge is moving or not

cps my friend ?
u mean crankshaft sensor ?
if u mean crankshaft sensor then its fine
i ve tested him