we have a problem with our 2007 sante fe started last week. when my wife is driving along the esc light begins flickereing and the vehicle come to a complete stop grabbin the brakes one side then the other untill it comes to a complete stop this can happen at any speed.it brakes on it's own you have no control over the vehicle except hold the steerwheel tight and it goes in a straight direction.last night she was doing 50 mph down a straight road. any answers?????