What Causes the Electric Power Steering Wheel to Become Heavy?
2 Answers
The reasons for the electric power steering wheel becoming heavy are as follows: 1. Decreased lubrication effect of bearings: If the fit between the rolling bearings and sliding bearings connected to the steering system is too tight, it can lead to reduced lubrication effect of the bearings, causing a sticking phenomenon, which manifests as a heavy steering wheel; 2. Pump pressure not meeting standard values: When the pump pressure of the power steering pump does not meet standard values, the steering wheel will feel heavy during use. Check the flow control valve; during driving, leaks in the flow control valve or safety valve can be repaired by grinding. Then, check if the spring of the safety valve has failed; 3. Low hydraulic pressure of the steering gear: When the hydraulic pressure of the steering gear is low, the steering wheel will also feel heavy. If the steering wheel becomes heavy due to the hydraulic pressure of the steering gear, it is necessary to promptly visit a repair shop for maintenance; 4. Air in the steering system: When there is air mixed in the car's steering system, not only will the steering feel heavy, but there will also be noise during the steering process. It needs to be addressed promptly to avoid unnecessary losses later; 5. Dirty oil filter: Long-term lack of maintenance or untimely replacement of the return oil filter in the oil reservoir can easily cause blockage, leading to poor circulation of the power steering oil and making the steering wheel heavy.
The electronic power steering wheel becoming heavier is usually due to a malfunction in the system components. I am familiar with how electronic power steering works: it relies on a motor and sensors to reduce steering effort. Common causes include sensor failure leading to signal interruption, or a malfunction in the power assist motor itself. There could also be poor electrical contact or unstable battery voltage affecting power supply. I usually recommend regular checks of the vehicle's electrical system and not ignoring minor issues, otherwise steering will become increasingly difficult, affecting driving safety. Generally, replacing faulty components can restore ease of steering.
