What Causes the Steering Wheel to Suddenly Become Heavier?

[McCarmen]

Here are the reasons why the steering wheel may suddenly become heavier: 1. Vehicle abnormality or malfunction: Check the steering wheel settings, as it could be due to a vehicle abnormality or malfunction. For example, the power steering pump might be damaged, the pump may lack oil, the belt could have issues, or there might be problems with the power steering motor and its module. 2. Electronic power steering self-adjustment function: Most new cars now come with electronic power steering, which allows for adjusting the steering wheel force. This setting option is usually found in the vehicle settings or personal preferences on the central console. Mechanical power steering and electronic power steering differ; electronic power steering often has a self-adjustment function that increases the steering wheel force at high speeds to prevent misoperation caused by overly light steering. Mechanical power steering is relatively heavier, especially at low speeds. 3. Insufficient power steering fluid: Power steering fluid is a medium oil used in the car's power steering pump, serving to transmit steering force and provide cushioning. The power steering fluid needs to be replaced regularly, and leaks should be checked. When the power steering fluid is insufficient, the steering will feel heavy and sluggish.

[MacRose]

I've been driving for over twenty years and have encountered the issue of the steering wheel suddenly becoming heavy several times. The most common cause is a problem with the power steering system, such as insufficient hydraulic fluid or a faulty oil pump. Low hydraulic fluid could be due to a leak, and a loose belt can also reduce power assistance, making it feel like turning a stone. For cars with electronic power steering, a malfunctioning sensor or control unit can also cause this. Like the last time I drove my friend's new car, the steering wheel felt as heavy as if it was locked on the highway, and it turned out to be a sensor misreporting. Don’t force it to avoid damaging the steering mechanism and incurring costly repairs. It's advisable to stop and check if any warning lights are on the dashboard—safety first, don’t mess around like I did the first time.