I have an automatic pro and is connected to the OBDII port on my sons car. Recently we had to replace the alternator on his 2007 Acura RDX. 3 weeks later the replaced alternator went bad and fortunately I was able to get another one installed under warranty at the mechanic garage. Does anyone have issues with automatic pro messing up alternators? I am now afraid to plug in the automatic pro wondering if it will mess up the alternator again and my son will be stranded somewhere where he cannot drive the vehicle.