subject: The Nature of OBD II Scan Tool [print this page] Other features that will be good for an OBD II scan tool are having its own power source, laptop compatible and upgradeable online. The benefit of having its own power source is for you to be able to read the results even away from the car. Many lower-end scan tools rely only on a vehicle's power source. Some even do not store the data when not connected to the car. For being laptop compatible it can provide more information when used in series with a laptop while diagnosing the car with the help of Audi Repair manuals. The information will show on the LCD monitor and pinpoint the problem. Now, there are those compatible with a laptop but not upgradeable online. Vehicle manufacturers come out with new models each year and sometimes revise existing models. Upgrading the scan tool is most helpful especially if you frequently change cars to newer models.
