What does a steering wheel with an exclamation mark warning light indicate?

[McBrianna]

A steering wheel with an exclamation mark signifies the Electric Power Steering (EPS) indicator light, which typically disappears immediately after engine startup. The Electric Power Steering system (EPS) is a power-assisted steering system that directly relies on an electric motor to provide auxiliary torque. Compared to traditional Hydraulic Power Steering systems (HPS), EPS offers numerous advantages. The EPS system primarily 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 evolved from traditional mechanical steering systems. It utilizes power generated by an electric motor to assist drivers in steering operations. The system mainly comprises three major components: signal sensing devices (including torque sensors, steering angle sensors, and vehicle speed sensors), steering assist mechanisms (electric motor, clutch, and reduction transmission mechanism), and electronic control devices. 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 speed signals, and the control unit issues commands to control the motor's operation based on these voltage and speed signals, thereby generating the necessary steering assistance.

[DelMackenzie]

I've seen the steering wheel with an exclamation mark light up while driving, which is typically a warning for the electric power steering system malfunction. I've heard it indicates an issue with the steering system, possibly due to a fault in the electronic control unit, damaged steering torque sensor, or loose wiring connections. You may notice the steering wheel feels unusually heavy, especially during low-speed parking maneuvers. It's essential to safely pull over and turn off the engine immediately for inspection. If possible, contact a repair shop to use diagnostic tools to read the error codes and identify the specific fault. Regular maintenance checks on battery condition and steering component connections can help prevent such issues. Cold weather or prolonged vehicle inactivity may trigger temporary warnings—sometimes restarting the car can clear the alert, but if the light remains on, avoid driving to prevent further system damage or accident risks.

[LeBlakely]

I noticed the steering wheel exclamation mark icon on the dashboard is illuminated, indicating an issue with the electric power steering system. At this point, the steering wheel may become stiff and difficult to turn. I recommend immediately slowing down and finding a safe place to stop, then checking if the steering functions normally. Possible causes include sensor failure, control module issues, or power supply interruption. Try turning off the engine, waiting a few minutes, and restarting to see if the warning clears. If that doesn't work, it's best to call a tow truck and have the vehicle taken to a professional repair shop rather than forcing it to drive. During regular driving, pay attention to any unusual noises when turning, and during routine maintenance, regularly check the steering fluid level and electrical connections to reduce the likelihood of such failures occurring.