passat tdi b6 ecu/module replacement

vw754

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2006 passat..........if i get some donor parts to replace the ecu(which ive been told is no good)

if i get the exact same part number ecu from a donor car............and i also replace clocks/module/key

will the car start or will component protection not allow it?

at the moment im getting no ignition on the car,when i put the key in nothing happens at all.........unless i disconnect the battery........re-connect it..........mileage and clock etc show on the instrument cluster but after a few seconds disappear only thing that stays on is a 'yellow steering wheel'
engine blocked by immobilizer is displayed when checked via vcds.
ive had key (brand new) matched to the module behind the glove box.....but still a no go.
 
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