Why Your Traction Control System Warning Light Is On, and What to Do
If you’ve noticed the traction control system warning light come on in your car, you might be wondering what it means and how to deal with it. In this article, we’ll explain the reasons behind the traction control system light appearing on your dashboard and what actions you need to take.
What is Traction Control System?
The Traction Control System is an essential safety feature in your vehicle that helps maintain traction on slippery surfaces, such as wet, icy, or muddy roads. The system works by detecting wheel spin and adjusting the engine power or braking pressure to ensure the tires maintain good contact with the road. It works alongside your anti-lock braking system to help keep the vehicle stable in challenging conditions.
Why is the Traction Control System Warning Light On?
While it’s normal for the warning light to come on when the system is actively in use, such as in slippery conditions, there are several other reasons it may illuminate unexpectedly. Here are some common causes:
- Your Vehicle Has Temporarily Lost Traction: When driving in rain, snow, or mud, your car may experience a loss of traction, which can trigger the warning light. This is normal behavior, indicating that the system is working to regain traction. The light may stay on for a short period or flash while the system operates.
- Solution: This is a regular occurrence. The system is functioning well. Check your vehicle’s owner manual to become familiar with how the system works.
- Defective Wheel Speed Sensor or Sensor Wiring: The traction control system relies on wheel speed sensors to detect wheel spin. If these sensors are dirty, damaged, or corroded, the system may fail to operate, causing the warning light to appear. This issue is often related to the anti-lock braking system, as both systems share these sensors.
- Solution: If you notice the warning light staying on or flashing without a valid reason, it could be due to a faulty sensor. A mechanic can diagnose and replace the defective sensors using specialized tools.
- Failure of the Traction Control System Computer: The computer controlling your traction control system interprets data from the wheel sensors and activates the system. If this computer malfunctions due to corrosion, damage, or a wiring issue, the system can fail, causing the warning light to appear. Additionally, a malfunctioning computer may affect the anti-lock braking system.
- Solution: A diagnostic scan is necessary to identify any failures within the traction control system computer. Repairing or replacing the faulty computer should restore the system to full functionality.
Can You Drive With the Traction Control System Warning Light On?
If the warning light comes on but no other warning lights appear, don't panic. You can safely pull over, turn off your car, and restart it. If the light goes off after restarting, it may have been a temporary glitch.
However, if the light stays on or reappears after restarting, it’s a sign that the system needs attention. It’s important to drive cautiously and avoid sudden acceleration or hard braking that could cause wheel slippage.
If both the traction control system light and the anti-lock braking system light come on, it’s important to address the issue immediately, as both systems are critical for safe driving. Avoid hard braking or acceleration and seek professional help from a trusted mechanic at MyMechanic for a diagnostic test.
What to Do If Both Traction Control System and Anti-Lock Braking System Lights Come On?
If both the traction control system and anti-lock braking system lights illuminate, along with the main brake warning light, your braking system is compromised. It’s best to avoid driving the vehicle and have it towed to a MyMechanic service center for a thorough inspection. This is critical to prevent the risk of brake failure.
Should You Turn Off Your Traction Control System?
Some vehicles allow you to temporarily turn off the traction control system. While this may be necessary in certain situations, such as getting unstuck from mud or snow, you should only turn it off when absolutely needed.
- When Starting in Snow: If you're driving in snowy conditions, turning off the system can allow your wheels to spin slightly to gain initial traction.
- When Stuck in Mud or Snow: Disabling the system can help your wheels spin to generate more grip, which can help free your car from deep snow or mud.
- When Using Tire Chains: In certain conditions with icy roads, turning off the system can help your vehicle move more freely when tire chains are used.
Conclusion
The traction control system warning light is an important indicator that your vehicle’s traction control system may be having issues. If you notice this light staying on without apparent causes, or if it comes on alongside other warning lights, it’s crucial to get the system checked by a professional mechanic.
At MyMechanic, we specialize in diagnosing and repairing traction control systems, ensuring your vehicle remains safe and functional, especially in Malaysia’s challenging driving conditions. Reach out to us for a thorough inspection if you’re experiencing any issues with your traction control system.
