The best way to ask me questions is through ebay's "contact seller". Thank You
1) I don't know what part actually burns out inside the computer. It might not even be a part you can source.
2) My device will not add any type of pre-mature failure to the door actuators.
3) Unfortunately, Toyota doesn't have a recall out on this.

You can find my device on Ebay by entering item number 280735700457 into the ebay search. You'll see I've sold over 100 units and have 100% feed back with all positive comments.