 AC and backup camera problems continue to be an intermittent problem since we bought this car in 2016. Everytime we bring the car to multiple dealerships, we get the same answer, whether it is under warranty or not, that they cannot find and problems or codes. The dealership doesn't perform any investigation past checking codes or replicating the problem. Mazda policy seems to be set so that if neither of these two conditions are met then the customer must be lying about the problem. Mazda never once questioned the reliability of their diagnostic system to detect electrical problems.