A customer notices increasing effort to steer their car. What could be a potential cause?

Increasing effort to steer a car is often indicative of issues related to the steering mechanism, specifically those that inhibit smooth motion. A seized steering column U-joint can lead to significant steering difficulties. The U-joint is critical in allowing the steering column to articulate and transfer steering input from the driver to the steering gear. If this joint seizes, it will create a binding condition, making it harder for the driver to turn the steering wheel.

This mechanical failure translates to the driver feeling increased resistance or effort when trying to steer the vehicle, which would directly cause the symptoms the customer has noted. Addressing a seized U-joint involves either lubrication or replacement to restore normal steering function.