I recently took my car to the dealer to have the camera checked out. Apparently there is a recall on the backup sensors so they will be replacing them again as I've already had them replaced under warranty. The mechanic says the head unit is not working correctly so it needs to be replaced. Does anyone know where i can get a reasonably priced replacement head unit? I would even get an aftermarket one. I remember seeing an aftermarket one that exactly fits in the factory spot. Has anyone purchased an aftermarket one? Does it need to be programmed to work with steering wheel controls or backup camera?