What Causes Heavy Electronic Power Steering?
2 Answers
There are several possible causes, including insufficient power steering fluid in the vehicle; damage to the vehicle's power steering pump; or damage to the vehicle's steering gear. Below is relevant information: 1. Solution: Once the power steering system becomes heavy, it needs to be inspected and repaired promptly. Otherwise, it will affect the vehicle's driving, and loss of steering control can lead to dangerous situations. 2. Electro-Hydraulic Power Steering System: The structure of the electro-hydraulic power steering system mainly includes components such as the power steering gear, steering force sensor, vehicle speed sensor, steering control light, engine sensor, and other related parts. The principle of electro-hydraulic power steering is basically the same as that of mechanical hydraulic power steering, with the difference being that the oil pump is driven by an electric motor, and the steering assistance force can be adjusted.
I often encounter the issue of the electric power steering wheel becoming heavier, and I believe it's mainly related to battery problems. Nowadays, cars are equipped with electric power steering, and when the battery is low, the system will limit the power assistance, making the steering wheel feel heavier. Last time I checked, it was due to low voltage caused by an aging battery, and replacing the new battery fixed the issue. Additionally, if the steering angle sensor malfunctions, it can also cause this problem by sending incorrect data and disabling the power assistance system. Aging wiring with poor contact is another reason, especially prone to short circuits during rainy days. If the steering suddenly becomes heavier in winter, remember to check the tire pressure, as it being too low can indirectly affect the steering. If you notice the steering becoming stiff while driving, stop and check immediately—don't push through, safety comes first. When facing this issue, I recommend going to a repair shop for testing as soon as possible. Delaying might damage the motor module, making repairs more expensive.
