Can You Retrofit a Variable Steering Assist System in an Older Lexus LS for Improved Handling?

As a car enthusiast or a proud owner of a Lexus LS, you might have asked yourselves whether it’s possible to retrofit a variable steering assist system in older models for improved handling. This question is indeed relevant, considering the advancements in vehicle systems that have taken place over the years. The introduction of electric power steering systems and other safety features have transformed the car industry, and more specifically, the driving experience.

In this piece, we delve into the subject, discussing the possibility and implications of retrofitting a variable steering assist system in an older Lexus LS. We will take you through the process, addressing the seismic changes in vehicle control systems over time, and how these modifications might impact the performance of your car.

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Understanding the Variable Steering Assist System

Before we delve into the retrofitting process, it’s crucial to understand what a variable steering assist system is and how it functions. According to data from various car manufacturers, including Toyota, the parent company of Lexus, a variable steering assist system is designed to adapt the steering input according to the vehicle’s speed, providing a more precise control.

The system uses electric power to aid the driver in turning the car. When driving at lower speeds, the steering assist system amplifies the steering input, making it easier to manoeuvre the vehicle in tight spaces like parking lots. Conversely, at higher speeds, the system minimally assists the steering effort, ensuring the vehicle remains stable and stays on course.

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A good number of modern Lexus models come equipped with this system, enhancing the car’s handling and overall performance. This intelligent feature is a part of the raft of electric systems that have revolutionised the way vehicles are driven.

Retrofitting a Variable Steering Assist System in Older Lexus Models

While Lexus includes variable steering assist systems in their newer models, older ones, such as the Lexus LS, do not have this feature. However, it’s not impossible to retrofit a variable steering assist system into an older Lexus LS.

This process would involve installing an electric power steering pump, a steering angle sensor, and a control unit. The steering angle sensor measures the amount of steering input, while the control unit interprets this data and determines the necessary level of steering assist. The electric power steering pump then provides the required assist, making steering easier or harder depending on the driving conditions.

One crucial factor to consider is the compatibility of your car with the retrofitting process. Not all older models may be compatible with modern electric systems. Therefore, it’s essential to consult with a professional before undertaking the retrofitting process.

Improved Handling with a Variable Steering Assist System

After retrofitting a variable steering assist system in an older Lexus LS, you will notice a significant improvement in handling performance. With the system, steering at low speeds will become effortless as the system provides more assistance, reducing the effort required to turn the wheel.

At higher speeds, the system provides less assist, enabling the car to maintain stability and remain on course, enhancing safety. The improvement in handling can make your drive time more comfortable and enjoyable.

Possible Challenges in Retrofitting a Variable Steering Assist System

Despite the numerous benefits, retrofitting a variable steering assist system in an older Lexus LS does present some challenges. Firstly, the process can be quite complex and time-consuming. It requires a certain level of expertise and knowledge of the car’s systems.

Secondly, it can be costly. The parts required for the retrofitting process are not cheap and you would also need to consider the labour costs involved. Lastly, there is the issue of compatibility as not all older Lexus models can accommodate the system.


While it’s indeed possible to retrofit a variable steering assist system in an older Lexus LS, it’s essential to weigh the challenges and benefits before deciding to proceed with the process. Consulting with an expert can help you make an informed decision. Regardless of the choice you make, remember that any modifications to your car should aim to improve your driving experience and maintain, if not enhance, your vehicle’s safety and performance.

Examination of Member Posts and Likes Received about Retrofitting a Variable Steering Assist System

Recent activities on car enthusiast forums have shown an increase in member posts and likes received about retrofitting a variable steering assist system in an older Lexus LS. Many owners have been posting about their experiences and the benefits they have noticed after retrofitting the system.

For instance, some members have cited a significant improvement in their driving range and fuel economy. With the variable steering assist system, they reported that their Lexus LS was able to maintain a steady course at high speeds more efficiently, thus reducing fuel consumption. Such posts have received likes from other members, indicating agreement or shared experiences.

In addition to the improved driving range, other members have posted about how retrofitting the system has led to an improved overall handling of their vehicle. These posts often detail how the steering has become smoother, especially when manoeuvring at low speeds in tight spaces. Posts like these have received many likes, indicating the shared interest and positive reception of retrofitting a variable steering assist system.

However, not all the posts and received likes are positive. Some members have shared their experiences about the challenges they faced during the retrofitting process. Common issues include the high costs involved, the complex nature of the retrofitting process, and compatibility issues with their older Lexus LS models.


As we have explored in this article, retrofitting a variable steering assist system in an older Lexus LS can significantly improve handling and driving range, as evidenced by many member posts and received likes on various forums. However, it is not a straightforward process and can present challenges such as high costs and compatibility issues.

To ensure you make an informed decision, it’s advisable to consult with a professional, such as a Lexus dealer, who can guide you through the process and assess the compatibility of your vehicle with the system. Don’t forget to check your owner manual for any specific requirements or warnings regarding modifications to your vehicle.

As a rule of thumb, always remember that the primary purpose of any vehicle modification should be to enhance your driving experience and safety. Whether you decide to retrofit a variable steering assist system or opt for other modifications, the end goal should be to provide you with a more enjoyable, safe, and efficient driving experience.

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