The most common way to drive the power steering pump is through the engine's belt system. Traditional hydraulic power steering pumps are usually driven by the engine's belt. The engine belt is connected to the crankshaft of the engine. As the engine runs, the belt drives the shaft of the power steering pump to rotate, so that the pump works.

The manual steering system relies entirely on mechanical transmission, and there is no power steering device in the system. The steering force is directly applied by the driver and transmitted to the wheels, so there is no need for a power steering pump.

The biggest advantage of the hydraulic steering system is that it significantly reduces the driver's steering load. In a mechanical steering system, the driver needs to apply a large force to turn the steering wheel, especially when driving at low speed or parking, this force requirement will be more obvious.

In summary, the most efficient steering system should be the electric power steering system (EPS). This is because it performs well in energy efficiency, response speed and driving experience.

Whether it is a hydraulic power steering system or an electric power steering system, wear of mechanical parts is inevitable. This type of wear usually starts to show up around 100,000 miles, but it also depends on driving habits and road conditions.

The rack and pinion is one of the most expensive parts in the power steering system. The cost of replacing this part can be as high as $1,000 or more, especially for high-end models. The high cost is mainly due to the high price of the part itself and the complicated installation process.

Mercedes-Benz offers electric power steering in many of its models. For example, Mercedes-Benz's C-Class, E-Class and S-Class models have all adopted electric power steering technology.

When the electric power steering system fails, the vehicle may experience the following situations: steering becomes difficult, steering response is delayed, the vehicle cannot maintain a straight line, the driver warning system is activated, and emergency control capabilities are reduced.

Many car owners may find that power steering fluid leaks are particularly noticeable when the vehicle is stopped. This phenomenon can usually be attributed to several reasons: pressure release from the hydraulic system, material shrinkage due to temperature changes, gravity, and leakage of residual liquid.

As a luxury car, the replacement cost of the power steering pump of Buick LaCrosse is relatively high. The total cost is usually between $300 and $800.