What does it mean when the VGRS light is on?
2 Answers
VGRS light on indicates a malfunction in the Variable Gear Ratio Steering system. The Variable Gear Ratio Steering system adjusts the steering gear ratio based on the vehicle's speed and steering angle to enhance stability. When the vehicle is stationary, moving at low speeds, or making sharp turns, this system provides a smaller steering gear ratio. Conversely, when the vehicle is at high speeds or making slight turns, it offers a larger steering gear ratio. There are primarily two types of Variable Gear Ratio Steering systems: one operates through a special rack mechanism with a relatively simple working principle, while the other is more complex, utilizing a planetary gear structure and electronic systems.
I've worked in the auto shop for nearly a decade and frequently deal with steering system issues. When the VGRS warning light comes on, you must take it seriously—it's the alert for the Variable Gear Ratio Steering system, indicating steering control malfunction. Simply put, the electronic device has detected abnormalities like lost sensor signals, circuit shorts, or motor failure. You'll notice the steering wheel becomes unusually heavy and less responsive when turning, severely affecting handling. In such cases, don't hesitate—immediately find a safe spot to pull over and try restarting the engine. If the light remains on, head straight to the dealership. They'll need diagnostic tools to read the trouble codes, which could indicate loose connectors or a faulty ECU. Ignoring this is extremely risky; I've seen cases where the steering wheel locked up—it's downright dangerous. Regular maintenance checks on steering components can help prevent such issues.
