When water enters the power steering system, it will have an adverse effect on various components of the system. This is because the hydraulic oil in the power steering system not only needs to play a lubricating role, but also needs to maintain the hydraulic pressure of the system and provide power assistance.

When the electric power steering system fails, the driver may immediately feel that the steering wheel becomes very heavy, especially when driving at low speed or parking. This phenomenon is particularly obvious.

Long-term use of leak-stoppers may cause seals to swell or harden, further compromising the system's seal. While leak-stoppers may appear effective in the short term, over time, seal degradation will lead to larger leaks and even more expensive repairs.

The power steering pump is an important component in the power steering system of a car. Its main function is to provide power assistance through the hydraulic system, allowing the driver to turn the steering wheel more easily. In other words, the power steering pump is responsible for converting the mechanical energy of the engine into hydraulic energy, thereby reducing the force required for steering.

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.