Someone knows how much can be asked at the Bluetooth interface Elm327 is an interface for Obdii, I just acquired it online and already use it to scan a corolla 96 A Honda Civic 06 and other American version but I would like to know if it can be used for ABS brakes, airbags, program keys and diesel trucks. I do not know that I could give the device so much and I have not found information about its potential I have only been able to download some software but only make diagnosis, live data and registration sheets such as repair history. Does anyone know what these scanner are limited?