Tachosoft Mileage Calculator 231

likely contained the known algorithm for a specific set of car models (e.g., early 2000s VW, Audi, BMW, Ford). The user would:

It knows that for a 2018 Ford Focus, the mileage is stored not in one place, but in three redundant locations (addresses 0x1A0 , 0x2F0 , and 0x3C0 ). If those values disagree, the car may display an error or a tamper dot. tachosoft mileage calculator 231