Quote Originally Posted by Ioannis View Post
Can one use the OBD-II to, say, lock or unclock the doors, or open - close the windows or control other electric devices?

Ioannis
I recently helped another forum member create such a project, use the search above.

Quote Originally Posted by Ioannis
This kind of info's are well kept secrets and are different for each type of car. I will try to find that guy that had the alarm systems. Are interested in a specific car to look?
It’s not really, if you have a copy of the standard its in there. If you're creative you could hook up the Elm device to the car and start capturing codes.

BTW if you email Elm they will tell you that they don't support this type of interaction. That being said I've seen it done and it works, you really have to educate yourself on how the standard works and the different settings in the Elm chip.