Don't autoscan all systems on your Cdi while driving. I was surprised the Maxidas scanner I have would do this on my car. I was pulling out of my driveway when the Sbc scan came up. My brakes totally went out , dash turned red and I couldn't stop for a second. I was just moving the car to a different spot and was ready for this to happen. I was shocked it would perform a scan that would take out the brakes while driving. Bad software programming there. It should say -- put car in park ... Turn off engine -- something. I warned you. And really never scan your car while driving unless the manual says too.