In general, the impact of the failure of the electric power steering rack on the vehicle's controllability after the loss of power assistance is more direct and serious, and it is usually more dangerous. Therefore, car owners need to attach great importance to the maintenance and inspection of the electric power steering rack.

In the first few generations of Buick LaCrosse models, Buick chose the hydraulic power steering system. With the continuous advancement of automobile technology, the electric power steering system has gradually become mainstream, and Buick LaCrosse has also followed this trend.

For novices, one of the most important challenges is the lack of practical operating experience. Replacing the power steering rack and pinion is a delicate job, and any operational error can cause the entire system to operate abnormally.

When the power steering pump fails, the driver usually feels that the steering wheel becomes heavier, but there is no obvious jamming feeling. When the power steering rack fails, the driver may feel a change in the resistance to steering wheel turning, especially jamming at certain angles.

The ECU is the control center of the entire electric power steering system. If the ECU is suspected to be faulty, the fault code can be read through the vehicle diagnostic system. Modern cars are usually equipped with an on-board diagnostic system (OBD-II) that can help technicians quickly identify problems in the ECU.

The size of the leak is a key factor in determining the rate of leakage. If the leak is large, such as a completely broken seal or cracked high-pressure pipe, the power steering fluid may leak a large amount in a short period of time. In this case, the driver will quickly notice that the steering has become unusually heavy and the vehicle's power steering function is almost ineffective.

The electric power steering gear does not need to use steering oil. The electric power steering gear is completely powered by electronic components and electric motors, and no longer relies on hydraulic pumps and hydraulic pipelines, so it does not require hydraulic oil for lubrication or power.

For leaks at the hose or accessories, replacing the damaged hose or accessories is the best way to stop the leak. Aging or damage to the hose is one of the main causes of power steering pump leakage, so it is very important to check the condition of the hose regularly and replace it in time.

Abnormal The driver will feel that the steering wheel becomes unusually heavy, especially at low speeds or when parking. This situation not only makes driving more difficult, but also increases the danger of driving, especially in emergency situations.

Hydraulic power steering system is one of the earliest technologies to replace traditional rack and pinion steering systems. The system greatly reduces the force required by the driver to turn the steering wheel through the pressure provided by the hydraulic pump, thereby improving the comfort of control.