What does the steering wheel warning light with an exclamation mark mean?
2 Answers
Steering wheel warning light with an exclamation mark refers to the electric power steering system fault indicator. When this warning light is on, it means the vehicle's power steering has failed, and you need to use more force to turn the steering wheel. Normally, when the ignition switch is turned from OFF to ACC, the electric power steering system warning light will briefly illuminate. If no issues are detected after the self-check, it will turn off. The reasons for the electric power steering system fault indicator to light up include: 1. Road conditions or excessive tire resistance causing the motor to operate under high load for a long time; 2. High ambient temperature leading to poor motor cooling; 3. Dust or mud covering the steering motor, resulting in insufficient heat dissipation.
When you see the yellow steering wheel icon with an exclamation mark light up, I suggest being immediately alert. This thing is called the power steering warning light, and it lighting up definitely means trouble. I've encountered it several times, most commonly due to power steering issues: for cars with electric power steering, it could be a sensor, control module, or motor failure; for cars with hydraulic power steering, you need to check if the power steering pump is leaking or if the belt is loose. The scariest is when it lights up red, indicating the steering system might completely fail, and the steering wheel could even lock up. Once when I was driving and the yellow light came on, the steering wheel felt as heavy as lifting bricks, and I barely made it to the repair shop where they found the torque sensor was broken. A reminder to everyone: don't push your luck, steering wheel problems can be life-threatening in an instant.