Hey, I picked up a plug-and-play ODB tool from AliExpress that has some pins you can configure before plugging it in. It adds extra functions like auto-locking the doors when shifting to D, among other things. The ODB needs to stay plugged in for these features to work. I don’t think it affects the car in any other way, but I’m unsure. Will this void my car warranty?
No, it won’t void your warranty. The only way it could is if it somehow damaged the OBD port, modules, or ECU. But that’s not likely. Even if it did, it would be hard for them to prove it was your fault unless you tell them.