[Solved] Why Is My VSC Light and Check Engine Light On? How To Turn Off?

I know you think most of the time, "Why is my VSC light and check engine light on?" Sometimes you may be scared when those warning lights suddenly appear on your dashboard. But don't worry, you are not alone in facing this issue.

In this article, we are going to know the actual reasons behind turning on these lights and practical steps to resolve the problem. So, read the article completely to understand all of these.

What is VSC Light?

The full form of VSC is Vehicle Stability Control. It is basically a system that helps to maintain stability and prevent skidding in your vehicle. When this light is on, it typically indicates that the system has been disabled or there is a malfunction.

So turning off the VSC light can be done by identifying and resolving some issues. For example, checking and adjusting tire pressure, ensuring the gas cap is securely fastened, or addressing any other issues that may be affecting the system.

Remember, it's important to address the root cause of the VSC light being on to ensure your safety and the proper functioning of your vehicle.

But you must be wondering what causes the VSC light to come on. Let's discuss this in detail.

Causes for Turning on VSC Light

As I said above, the VSC light can come on due to a variety of reasons, indicating issues with the vehicle's stability control system or related components.

Here are the Some common causes:

Loose Gas Cap: A loose or faulty gas cap can trigger the check engine light, which can, in turn, illuminate the VSC light.

Faulty Wheel Speed Sensors: These sensors are responsible for detecting wheel speed and are crucial for the proper functioning of the stability control system. If a sensor is faulty or dirty, it can trigger the VSC light.

Faulty Steering Angle Sensor: This sensor monitors the steering wheel position and helps the stability control system determine the correct course of action. A faulty sensor can trigger the VSC light.

Malfunctioning ABS System: The Anti-lock Braking System (ABS) works in conjunction with the stability control system. If there is an issue with the ABS, it can trigger the VSC light.

Low Brake Fluid: Low brake fluid can indicate a leak or worn brake components, which can affect the performance of the stability control system and trigger the VSC light.

Other Mechanical or Electrical Issues: Various other issues, such as a faulty brake light switch, damaged wiring, or a malfunctioning control module, can also trigger the VSC light.

Learn Why is the Check Engine Light On?

The check engine light is also known as the malfunction indicator lamp (MIL). It is part of the vehicle's onboard diagnostics system. It illuminates when the system detects a problem with the engine, emissions, or transmission. The light can indicate a wide range of issues, from a loose gas cap to a more serious engine problem.

When the check engine light is on, it's important to fix the issue behind check engine light immediately. Ignoring the check engine light can lead to more serious and costly repairs down the line.

How To Turn Off VSC Light?

Turning off the VSC light involves addressing the underlying issue that caused it to illuminate. Here are some steps you can take,

Check the Gas Cap: The gas cap plays a crucial role in maintaining the pressure in the fuel system and preventing fuel evaporation.

A loose or faulty gas cap can lead to a drop in pressure in the fuel tank, triggering the check engine light and, in some cases, the VSC light.

To check the gas cap, ensure it is securely fastened by turning it until you hear a clicking sound. If the gas cap is damaged or missing, it should be replaced to prevent further issues.

Check Tire Pressure: Proper tire pressure is essential for safe driving and optimal performance of the vehicle's stability control system. Incorrect tire pressure can lead to uneven tire wear, reduced fuel efficiency, and impaired handling.

To check the tire pressure, use a tire pressure gauge to measure the pressure in each tire, including the spare tire.

Compare the measured pressure to the recommended pressure specified in the owner's manual or on the sticker located inside the driver's door jamb. Inflate the tires to the correct pressure as needed.

Inspect Wheel Speed Sensors: The wheel speed sensors are located near each wheel and are responsible for detecting the speed of each wheel. These sensors provide crucial information to the vehicle's stability control system, helping it to detect and prevent skidding.

Over time, the sensors can become dirty or covered in debris, which can interfere with their ability to function properly. Inspect the sensors for any dirt, debris, or damage.

If necessary, clean the sensors using a soft brush or cloth. If a sensor is damaged, it may need to be replaced to restore proper functionality.

Address Other Issues: If the VSC light continues to illuminate after checking the gas cap, tire pressure, and wheel speed sensors, there may be other issues affecting the stability control system.

Common issues include a faulty steering angle sensor, ABS system, or other mechanical or electrical issues.

I recommend you to consult a qualified mechanic or technician to diagnose and repair these issues.

Reset the System: If all else fails, you can try resetting the vehicle's onboard computer system to see if it turns off the VSC light.

To do this, find out the vehicle's battery and disconnect the negative terminal using a wrench or socket.

Leave the battery disconnected for at least 15-30 minutes to allow the computer system to reset.

Reconnect the battery and start the vehicle. This may reset the system and turn off the VSC light.

However, keep in mind that resetting the computer system may also reset other settings in the vehicle, such as the radio presets or clock, so you may need to reconfigure them after reconnecting the battery.

Final Words

So, understanding the VSC light and check engine light is crucial for maintaining your vehicle's safety and performance. The VSC light indicates issues with the stability control system, while the check engine light signifies problems with the engine, emissions, or transmission.

By following the steps given above, you can address the underlying issues causing these lights to illuminate and ensure your vehicle is in optimal condition.

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