What Causes Heavy Steering Wheel When Driving?
2 Answers
The reasons for a heavy steering wheel are as follows: 1. Dirty power steering fluid can cause the steering wheel to become increasingly heavy, and a lack of power steering fluid can also make the steering wheel feel heavier. If the issue is with the power steering fluid, it should be promptly added or replaced; 2. If there is a fault in the electric power steering system, check whether the fuse is blown, or if there is an open circuit or a short to ground in the wiring; 3. When the electric power steering is repeatedly turned at a standstill or at low speeds, the steering wheel places a significant load on the power system, which can easily cause the steering gear to enter high-temperature protection mode, resulting in heavy steering. It will return to normal after cooling down, which is a normal phenomenon.
I've been driving for many years, and a heavy steering wheel is indeed frustrating. The most common cause is low tire pressure, which significantly increases rolling resistance and makes the steering gear harder to turn. Another reason is a malfunction in the power steering system. In older models, hydraulic power steering may lack oil or have a damaged pump, losing assistance and making the steering stiff. In newer models with electric power steering, if the motor burns out or sensors fail, the assistance disappears as well. Imbalanced front wheel alignment, such as toe misalignment, can also force the wheels off track, increasing the burden. Worn components like aging steering gears or lack of lubrication increase resistance. Last time, after driving on a bumpy mountain road, the steering became so heavy it made my arms sore—during repairs, it was found that the ball joint was loose. For safety, avoid forcing turns when the steering is heavy, as it can lead to loss of control, especially in rain or snow. It's recommended to check and refill tire pressure monthly, inspect power steering fluid and wiring regularly to prevent failures, which can extend your car's lifespan.
