Has anyone here ever managed to work out what data the key fob is sending to the vehicle and more importantly how its encrypted.
I have managed to work out the data string is a 77 bit binary code, this data can be converted into 6 * 2 digit hex numbers ie: 4D,46,F3,1B,BF,9C
From these 6 * 2 digit numbers the Vehicle manages to identify the key code and the key identity number, button pressed, and the next rolling code that will be sent. The most commonly used key encoding system is Keeyloq, but all the published data on Keeloq stated that Keeyloq encryption sends the first few bytes containing the Key code and key id are sent un encrypted.
Any ideas welcome