The following sequence of neutralization of modules needs to be followed! First you neutralize all of the modules you are changing except the SMART SYSTEM, and then neutralize the SMART SYSTEM with a new procedure. (or in the case of mechanical key cars - the Immobilizer). If the vehicle is left with neutralized smart system, but the rest of the modules are not neutralized, this might cause a problem for the vehicle.
Another very important thing is that the state of the module you are working with can be checked by viewing the live data values or from the process of neutralization.
When working in a donor car you have to know the pin code of the donor. If you od not know it, you can read it using the key programming function.
If workinfg on bench (HK010) you do not need the pin, but there are risks for the unit.
If the key comes from the same car you can re-program it and reuse it.