In those cases you will have to visit the Ford dealer and they will be able to correct the mileage for you, for a fee. If this is something Km/H related, the dealership can also adjust that (tire revs/mile). With an ELM based device there are no parameters with you can adjust in the ECU. All it allows you to do is see what is going on. This is HOmZ6K. 5 276 465 513 45 220 903 149

ford focus mk2 mileage display not working