Parts for your 2018 Subaru Legacy-Power steering pump

Power Steering Pump on the 2018 Subaru Legacy: What You Need to Know

The 2018 Subaru Legacy is a well-regarded midsize sedan known for its reliability, safety features, and smooth driving experience. When it comes to steering, this vehicle does indeed utilise power assistance, but the way it achieves this may surprise some. Unlike older models that relied predominantly on hydraulic power steering systems driven by a power steering pump, the 2018 Subaru Legacy is equipped with an electric power steering system, meaning it does not use a traditional power steering pump.

Why is there no power steering pump on the 2018 Subaru Legacy? It's largely due to advancements in automotive technology aimed at improving fuel efficiency and reducing maintenance hassles. Traditional hydraulic power steering systems rely on a belt-driven pump that circulates hydraulic fluid to assist the driver in turning the wheels. While effective, these systems add mechanical drag on the engine, impacting fuel economy, and involve components like fluid reservoirs and pumps that require upkeep.

The 2018 Subaru Legacy, however, uses an Electric Power Steering (EPS) system. In this setup, an electric motor provides steering assistance based on inputs from sensors that detect the steering wheel's torque and position. The electric motor is powered by the vehicle's electrical system rather than a hydraulic pump. This design eliminates the need for hydraulic fluid and a power steering pump altogether. The benefits of EPS include lower energy consumption since the electric motor only draws power when steering assistance is needed, improved precision in steering, and reduced maintenance demands.

While you won't find a power steering pump to service or replace in the traditional sense on a 2018 Subaru Legacy, there are still important reasons to pay attention to the EPS system maintenance. Proper functioning of the electric power steering components is crucial for a smooth and safe driving experience. This includes keeping the steering rack and column in good condition, ensuring the sensors and motor are operating correctly, and keeping the vehicle's battery and electrical system in top shape.

For owners used to servicing hydraulic power steering systems, the transition to EPS might seem like less work, but a different kind of care is necessary. If the EPS system shows signs of malfunction, such as unusual steering effort, warning lights on the dashboard, or unusual noises when turning, it's a good idea to have the system diagnosed by a Subaru specialist. Unlike hydraulic systems where leaks and fluid levels are common trouble spots, EPS issues often relate to electrical faults or sensor problems. In these cases, specialised diagnostic tools are needed to pinpoint the problem.

Because the 2018 Subaru Legacy utilises EPS, servicing routines focus more on electronic system checks rather than traditional power steering fluid replacements or pump inspections. Regular vehicle servicing should include checks of the steering's responsiveness and any dashboard warnings related to the EPS system. Battery health is also a key factor since the performance of the electric motor assisting the steering depends on a stable and adequate power supply.

Even with the absence of a traditional power steering pump, the steering system's overall health remains a vital part of vehicle maintenance. Worn suspension components or steering linkages can impact steering feel and performance, so these should also be checked regularly. Ensuring the tyres are correctly inflated and aligned contributes to easy and safe steering as well.

For any replacement parts related to the electric power steering system in the 2018 Subaru Legacy, it is best to use genuine Subaru components or high-quality aftermarket options that meet Subaru specifications. Since the EPS system relies heavily on electronic sensors and motors, replacement parts need to be compatible with the vehicle's onboard computer system to avoid issues and maintain performance.

To sum it up, the 2018 Subaru Legacy represents a modern approach to steering assistance by eliminating the traditional power steering pump in favour of an electric power steering system. This shift offers improved fuel efficiency, reduced maintenance, and precise steering control. For owners, this means fewer worries about leaks or pump failures but a greater focus on electrical system health and regular diagnostic checks. In the end, paying attention to your Legacy's steering system keeps every journey smooth, safe and enjoyable.