Steering System Noise Definitions: Clunk
WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
A heavy or dull, short-duration, low-frequency sound that can be temperature sensitive. Clunk can occur when accelerating or decelerating abruptly. Also described as a thunk. Clunk can also occur when cornering over a bump.