Since the ability to turn the lane departure warning off or on comes under the heading of 'Auto Pilot', I figured that this function only happens while driving with the autopilot engaged. Not so in my car. If the warning is turned on and I am NOT in auto pilot, I still get the wheel vibration when changing lanes, usually when I am going 40+ mph. Is this normal for it to work this way? If I go to my settings under autopilot and turn off the warning, the vibration goes away.