What causes the clicking sound when turning the steering wheel to full lock?

[DanielaAnn]

When turning the steering wheel to full lock, the clicking sound is caused by slight contact between the wheel balancing weights and the steering linkage during the turn. The steering wheel is the round control device used to direct vehicles such as cars, ships, and airplanes. Its function is to convert the force applied by the driver on the wheel's edge into torque, which is then transmitted to the steering column. It mainly consists of a frame, foam padding, and mounting clips or screw holes corresponding to the driver's airbag (DAB). Typically, the steering wheel connects to the steering column via splines, transforming the driver's applied force into torque for the steering column. Using a larger diameter steering wheel reduces the hand force required from the driver when turning.