When starting this special function the following dialog is displayed:
For EDC16/MED9/ME7 and Simos engine control units the customer can press directly “Read” and the old CS/PIN are displayed. If engine control unit is virgin, this is also automatically detected.
So after the successful read of the existing data, they are filled automatically in the field below.
For EDC17/MED17 the old CS/PIN should be put manually as displayed on the following dialog:
Please pay attention that the 7th byte of the CS is not required here.
Pressing the “Read button” will read the power class, existing PIN/CS, also VIN and immobilizer number.
Also after successful reading the fields for the CS/PIN, ID and Immo-number become active and customer may specify the values that he want. Please pay attention that the “power class” for the engine control unit is displayed. This is very important value which is stored inside the engine control flash and cannot be changed. This value should be the same for the engine control unit and the immobilizer, this means if the old (broken) engine control unit is from one power class, and the new one is from other, the car will not start, even if the adaptation procedure was completed. The meaning of the power class value is to prevent putting one engine control unit from e.g. 3.0TDI to car with 2.0TDI.