So I couldn't take the little object on my climate control display and ordered one off of ebay. My question is.... Do these things have to be programmed or anything when installed? Or are they plug and play? I know that the older 4runners had problems so maybe someone could chime in their experience. I'd love to let toyota handle this for me, but its 2k out of warranty and they want $1200 to replace it. What a ripoff