Parts for your 2015 Lexus Is-Power steering pump

Power Steering Pump for the 2015 Lexus IS - What You Need to Know

The 2015 Lexus IS is a sleek, sporty sedan that comes equipped with modern features designed to provide a smooth and enjoyable driving experience. When it comes to the steering system, the 2015 Lexus IS does rely on power steering, but not in the traditional way that uses a power steering pump. Instead, this model is fitted with an electric power steering system, often referred to as EPS (Electric Power Steering).

Unlike older vehicles that used hydraulic power steering systems, which required a power steering pump driven by the engine, the 2015 Lexus IS utilises an electric motor to assist steering. This means you won't find a conventional power steering pump under the bonnet of this car.

So why does the 2015 Lexus IS skip the power steering pump? It mainly comes down to efficiency, reliability, and eco-friendliness. Hydraulic power steering systems rely on a pump that circulates fluid to provide steering assistance. This pump is usually powered by a belt connected to the engine, which means it is always running when the engine is on, consuming power and impacting fuel economy.

Electric power steering, on the other hand, uses an electric motor to deliver assistance only when needed. This system draws power from the vehicle's electrical system, which can be controlled more precisely and reduces unnecessary energy consumption, contributing to better fuel efficiency. Additionally, eliminating the hydraulic pump, hoses, and fluid cuts down on maintenance needs and potential leaks.

Many modern cars, including the 2015 Lexus IS, have adopted electric power steering to meet stricter emission standards and to offer drivers a more precise and responsive steering feel. Plus, EPS systems can easily be integrated with driver assistance features like lane keeping assist and parking sensors, adding to safety and convenience.

Now, even though the 2015 Lexus IS does not have a traditional power steering pump, it is still important to maintain the overall steering system to ensure smooth operation. Here are some tips and points to keep in mind if you own this vehicle:

• Check the steering feel. Electric power steering systems are usually very reliable but if you notice any unusual noises, stiffness, or intermittent assist loss, it might indicate an issue with the EPS motor or control module.
• Keep an eye on the battery and electrical system. Since the EPS relies on electrical power, a weak battery or alternator can impact how well the power steering assists you.
• Look after your tyres and wheel alignment. Since electric power steering directly controls the steering torque, maintaining correct tyre pressure and regular wheel alignments are essential to avoid unnecessary strain on the system.
• During servicing, have your technician scan the vehicle's computer system for any error codes related to the steering system. This can help catch any potential faults early.

For traditional hydraulic power steering pumps, maintenance usually involves checking the power steering fluid level and condition, changing the fluid according to manufacturer schedules, and inspecting the pump for leaks or noise. However, since the 2015 Lexus IS does not use a hydraulic system, there is no power steering fluid to worry about, and no belt-driven pump to inspect or replace.

The shift to electric power steering means that replacement or repairs often involve parts like the EPS motor, sensors, or the steering column control module, rather than a pump. Repairs can sometimes be more costly but tend to occur less frequently given the simpler mechanical setup compared to hydraulic systems.

If ever a replacement or major repair is needed on the EPS of a 2015 Lexus IS, it's best to consult an experienced Lexus mechanic or authorised dealer. They will have the specialised diagnostic tools and parts to properly assess and fix electric steering issues.

In a nutshell, the 2015 Lexus IS moves away from the old-style power steering pump in favour of a modern, electric system. This change is a big win for fuel efficiency, lower maintenance costs, and improved driving comfort. While the traditional power steering pump might be a common topic in car maintenance, owners of the 2015 Lexus IS can relax knowing that they don't have to regularly check or replace a power steering pump, making life a little easier under the bonnet.