 Majority of the time i go over a speed bump, sewer, and even pot holes there is a loud disturbing girding noise took it to the dealership and "observed normal  operation" still to this day i have continued with this argument and nothing. Just today i drove over small bumps and had my foot on the brakes and still kept going.. Very UNRELIABLE! Worked for this car for 3 Years to get this. An accident is waiting to happen before they help.