Why Did the Steering Wheel Suddenly Become Lighter?
2 Answers
The reasons for the steering wheel becoming lighter are: 1. The thermal stability of the circuit controlling the electronic power steering system has deteriorated, requiring inspection and repair at a service center; 2. The steering wheel has been used for a long time, and the lubrication performance of the parts has deteriorated, causing them to accumulate and make the steering system components lighter; 3. High tire pressure in the car tires reduces resistance, which can also make the steering feel lighter; 4. If the brake pads are sticking, this can also cause the steering wheel to feel lighter. The steering wheel is the wheel-shaped device used to control the direction of cars, ships, and airplanes. Its function is to convert the force applied by the driver to the edge of the steering wheel into torque, which is then transmitted to the steering shaft. The steering wheel is mainly composed of a skeleton, foam, and the corresponding installation clips or screw holes for the driver's airbag (DAB).
A few days ago, I was driving out when suddenly the steering wheel felt light as a feather, like driving a toy car. As a veteran driver with decades of experience, I knew this was often no small issue. The most common cause is a problem with the power steering system. Many cars now use electric power steering, and if the controller or motor fails, the steering can feel unnaturally light. Low tire pressure can also cause this, especially in winter when temperatures drop quickly, leading to insufficient tire pressure and a floating steering sensation. Additionally, wear or looseness in the suspension system, such as a damaged steering knuckle or shock absorber, can also make the steering feel lighter. The key concern is the significant safety risk—loss of steering control can be deadly, and an accident during a turn could be disastrous. In my case, after stopping to check, I found a loose connector in the power steering system. After repairs, everything returned to normal. But I advise drivers to pull over safely and immediately check tire pressure or visit a professional shop for diagnosis if this happens—don’t take chances. Regular inspections of these components during daily driving can prevent many headaches.
