What Causes the Electric Power Steering Wheel to Become Heavier?
2 Answers
An electric power steering wheel becoming heavier could be caused by contaminated power steering fluid, insufficient tire pressure, among other factors. Below are the reasons for a heavier steering wheel: 1. If it is hydraulic power steering, a common cause is contaminated power steering fluid. This can lead to the steering wheel becoming progressively heavier, 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. Check whether the fuse is blown or if there are any open or short circuits in the wiring. 3. If it is electric power steering, repeatedly turning the steering wheel while stationary or at low speeds places a significant load on the power steering system, which can cause the steering gear to overheat and enter a protective mode, resulting in heavier steering. It will return to normal after cooling down, which is a normal phenomenon. 4. If the electric power steering feels heavy, it is recommended to check whether the plane bearing above the shock absorber is functioning properly. Additionally, significant deviations in alignment data can also cause the steering wheel to become heavier. 5. Insufficient tire pressure can also make the driver feel that the steering wheel is noticeably heavier. Simply refilling the tires to the standard pressure will restore normal operation.
I've experienced the steering wheel becoming heavier, which is usually caused by insufficient tire pressure. Nowadays, cars with electronic power steering have tire pressure monitoring systems, so you can first check if there's any warning on the dashboard. Additionally, low winter temperatures can increase the viscosity of the power steering fluid, making steering naturally more strenuous. If the steering is light when parked but becomes heavy once on the road, it's likely an issue with the camber or toe angle of the front suspension. The electric power steering module could also malfunction, especially after the car has been through water, as the connectors are prone to oxidation leading to poor contact. Lack of lubrication in the steering universal joint can also cause stiffness. It's advisable to test the steering feel by turning the wheel while stationary before driving. If there's noticeably increased resistance, it's best to have it checked at a repair shop.
