Has anyone ever stalled, started up again and hit the brakes during the test? More than once I've hit the brakes right after starting and after moving a bit and had the pedal lose pressure, get hard after pushing down more and a bumping grinding noise happen for a second. Seeing this post makes me think I caught the self test I just want to make sure I'm not the only one with this possible problem.

 

If you hit the brake pedal when the test happens, you'll feel it vibrating like crazy. Kinda freaked me out the first time I felt it.