What does the exclamation mark on the car steering wheel indicate as a warning light?
3 Answers
The appearance of an exclamation mark on the steering wheel indicates the Electric Power Steering (EPS) warning light, which typically disappears immediately after the engine starts. Electric Power Steering (EPS) is a power steering system that directly relies on an electric motor to provide auxiliary torque. Compared to the traditional Hydraulic Power Steering (HPS) system, EPS offers numerous advantages. The EPS system mainly consists of components such as a torque sensor, vehicle speed sensor, electric motor, reduction mechanism, and Electronic Control Unit (ECU). The Electric Power Steering system has evolved from the traditional mechanical steering system. It utilizes the power generated by an electric motor to assist the driver in steering operations. The system primarily comprises three major components: signal sensing devices (including torque sensor, steering angle sensor, and vehicle speed sensor), steering assist mechanism (electric motor, clutch, and reduction transmission mechanism), and electronic control device. The electric motor operates only when assistance is required. When the driver manipulates the steering wheel, the torque and angle sensors generate corresponding voltage signals based on the input torque and steering angle. The vehicle speed sensor detects the speed signal, and the control unit issues commands to control the motor's operation based on the voltage and speed signals, thereby producing the necessary steering assistance.
When I saw that exclamation mark light up next to the steering wheel, I immediately realized there was an issue with the electric power steering. This thing is called the EPS warning light, and when it comes on, it indicates a problem with the steering system—it could be a sensor detecting abnormal signals, a short circuit in the control module, or the motor not running smoothly. You'll notice the steering becomes unusually heavy while driving, sometimes requiring both hands to turn the wheel, which is extremely dangerous and can lead to loss of control during turns. It's best not to risk continuing to drive; instead, head to a repair shop or dealership right away to scan for trouble codes. They can determine whether it's a faulty sensor or corroded wiring, and replacing the part usually fixes it. Regular maintenance checks on power steering fluid and battery voltage can also help prevent such issues. In short, never ignore this warning light—it's critical to driving safety.
Last time my old car had this issue, a red light with an exclamation mark appeared near the steering wheel, and the steering became stiff and uncomfortable to operate. After searching online, I learned it was a power steering system malfunction, commonly caused by unstable voltage or aging sensors. I tried restarting the engine, but the light didn't go off, so I had to take it to the shop for inspection. They found poor contact in the power supply wiring. The technician replaced a wire, and it was fixed. If you notice this light, first try turning off and restarting the engine. If the problem persists, contact a professional immediately—don't delay, especially when driving at night, as heavier steering increases the risk of accidents.
