Your vehicle has EWS 3.3. The current new EWS module BMW offers is EWS 4.3, which is downwards compatible.

If the vehicle is cranking EWS has recognised the key. If the sync between EWS and DME is lost it won't allow fuel injection. So check with your diagnostics if it has a feature to re-sync EWS-DME. There should be a code on DME for EWS manipulation but for some reason it doesn't always show up.

__________________
E39 530dA -02 M-Sport Messing metallic
E53 X5 3.0dA -06 Sport Stratus grey
E70 X5 40d -12 M-Sport Space grey