Using the adapter you can read the immo date in locked BCMs which gives you the opportunity to “make up” the key but:
- in the case of A4, A5, Q5 no working key is required – you “make” the key without additional data
- in the case of A6, A7, A8 a working key is required, or in the absence of a working key it is required to have “synchronization data”
Synchronization data can be calculated with VVDI 2 but only if the car is equipped with Bosch controllers (MED17 or EDC17). It is not possible to calculate the data in case the engine controller is SIMOS. We recommend then to buy the key at the ASO and add it with VVDI 2/ PLUS PAD based on the immo date read.
Translated with DeepL.com (free version)