What causes the EPS light to illuminate during startup?

[Theresa]

When the EPS light illuminates during startup, it indicates a system malfunction that has caused the system to shut down, resulting in the loss of power steering assistance. To ensure a more reliable solution, it is best to visit a professional repair shop or a 4S store for further inspection. Possible causes of EPS failure: Steering gear failure; Damage to the flow control valve or weak spring in the power steering pump; Leakage or insufficient power steering fluid; Steering column seizure, typically manifested as an inability to steer properly while driving; Loose or aged torque sensor pins; EPS control module failure. Symptoms of EPS failure: Steering becomes heavy; Unusual noises occur during steering; The steering wheel vibrates; The speed at which the steering wheel returns to center becomes relatively slower.

[CharlotteLynn]

When the EPS light comes on at startup, I think it's the electric power steering system giving an alarm, and there could be several possible causes. The most common one is a sensor issue, such as a malfunction in the steering angle sensor or torque sensor. When the system detects an abnormality, it lights up the warning. Another possibility is insufficient battery power or unstable voltage, leading to inadequate power supply during vehicle startup, causing the EPS self-check to fail. Sometimes, it can also be caused by internal control module errors or poor wiring connections triggering false alarms. I remember once my car had the same issue, and after inspection, it turned out to be due to an aging battery with low voltage. From a safety perspective, when the EPS light is on, the power steering assistance may weaken, making driving difficult. It's best to stop immediately and check the battery condition. Regular maintenance of the battery and wiring can prevent such issues. Don't wait for small problems to escalate before fixing them, as it could compromise driving safety.

[OJaxson]

I found that when the EPS light comes on during startup, it usually indicates a problem with the electric power steering system. Possible causes include unresponsive sensors, battery power supply failure, or control unit malfunction. Damaged sensors such as the steering position sensor can trigger the warning; corroded battery terminals or low voltage can affect system operation; and abnormal control modules are also common culprits. Once the light is on, I believe the power steering assistance may fail, making driving more strenuous, especially during turns or at low speeds. Don't ignore this signal—find a safe place to stop as soon as possible and try restarting the vehicle to see if the light goes off. If it stays on, it's best to go directly to a professional repair shop to scan for fault codes with a diagnostic tool. For daily vehicle use, I recommend maintaining battery health and regularly cleaning the terminals to prevent contact issues, just in case.

[OAngelo]

When the EPS light comes on during startup, I believe the causes are mostly sensor failure, battery issues, or control module malfunction. The system's startup self-check triggers the light if there are abnormalities, such as a sensor not responding, insufficient battery voltage causing power interruption, or internal module errors. I find it best to start with simple checks: first, use a multimeter to measure if the battery voltage is normal (preferably at least 12 volts). If that's not the issue, check for loose sensor connections. Until the problem is resolved, drive carefully as power assistance may disappear, making steering heavier and quite dangerous. Address the issue promptly without delay.