Modern vehicles are equipped with dashboard warning lights designed to keep you informed about potential issues—one of which is the power steering warning light. This light, often represented by a steering wheel icon or the letters “EPS” (Electric Power Steering), indicates that there is an issue with your steering system.
If your power steering light turns on unexpectedly, it doesn’t always mean immediate danger, but it’s a sign that your car should be inspected promptly. Power steering problems can compromise your ability to steer safely and smoothly, especially at lower speeds or during emergency maneuvers.
What the Power Steering Light Indicates
The function of the power steering light depends on the type of steering system your car uses. Most modern vehicles are equipped with electric power steering (EPS), while older models may use hydraulic systems powered by engine-driven pumps.
When the light turns on, your vehicle’s onboard computer has detected a fault. In EPS-equipped cars, this usually involves sensors, wiring, or the electric motor that provides steering assistance. In hydraulic systems, it may point to low fluid levels, pump failure, or worn belts.
Some vehicles may still drive normally with the light on, while others become difficult to steer. Either way, you should have the system checked to avoid worsening the issue.
Common Causes in Electric Power Steering Systems
Electric power steering systems have fewer mechanical parts than hydraulic ones, but they rely heavily on electronics. When the power steering light activates in these systems, it’s often due to one of the following:
- A malfunctioning torque or angle sensor.
- A problem with the electric power steering control module.
- Loose or corroded wiring connections.
- A failing steering motor.
These systems are designed to shut off power assist if something goes wrong, preventing damage. This may leave you with very stiff steering, especially at low speeds. Restarting the car sometimes resets the light temporarily, but this doesn’t resolve the underlying issue.
Hydraulic Power Steering Issues
In vehicles with hydraulic steering, fluid plays a vital role in assisting movement. If the power steering fluid is low, you may notice the light along with other symptoms like squealing noises or increased steering effort.
Worn or slipping belts that drive the power steering pump can also cause the system to operate poorly. In more severe cases, a faulty pump may be to blame. Since the engine drives the pump, performance may vary depending on RPM and load.
Unlike EPS, hydraulic systems require regular maintenance such as fluid checks and replacement to ensure smooth operation.
Steering Feels Heavy or Unresponsive
If the light is on and steering becomes noticeably harder, especially at low speeds or while parking, it’s a strong indication that power assist has been reduced or lost entirely. This can make your car harder to control, particularly in tight spaces or during quick turns.
Heavy steering can also point to a mechanical issue with the steering rack or linkage, though these typically won’t trigger the warning light unless sensors detect a related fault.
Paying attention to how your car responds to steering input can help a technician diagnose the problem more efficiently.
Can You Drive With the Power Steering Light On
Technically, yes—but it’s not recommended for long. A car without power steering assist is much harder to handle, increasing the risk of accidents, especially in urban or emergency driving situations.
If the light turns on while driving and you notice a change in steering feel, slow down and try to safely reach a service location. If steering becomes extremely stiff or unresponsive, pull over and avoid continuing to drive. The issue might be as simple as a loose connection or low fluid, but it could also indicate a system failure that affects your safety.
The Importance of Diagnostic Testing
Diagnosing the exact cause of a power steering warning requires professional tools. Technicians can connect a scan tool to your vehicle’s computer system to retrieve error codes related to the steering system. These codes help pinpoint the source of the problem, whether it's electrical, mechanical, or fluid-related.
A full inspection may include checking steering fluid levels, testing sensor outputs, inspecting wiring, and evaluating the steering motor’s performance.
Addressing the issue early prevents more significant problems down the line, such as total steering loss or damage to other components in the steering assembly.
Let Portland Automotive in Portland, CT, Keep You in Control
At Portland Automotive in Portland, CT, we understand the importance of safe and responsive steering in maintaining your confidence on the road. If your power steering light has come on, our expert technicians can quickly diagnose the issue and provide repairs to restore full steering function.
From checking sensors and electrical connections to servicing hydraulic components, we handle all types of power steering systems with precision and care. Don’t ignore the warning signs—schedule a diagnostic visit today and drive with peace of mind knowing your vehicle is in expert hands.