Why does TRC automatically turn off?
2 Answers
TRC may automatically turn off due to accidental operation of the TRC switch button or system malfunctions. Here are specific details about the automotive TRC system: 1. Function of the TRC system: The TRC system, or Traction Control System, effectively maintains driving force and prevents wheel spin when starting or accelerating on slippery roads, thereby enhancing driving safety to some extent. 2. Impact of turning off the TRC system: Turning off the TRC system does not affect driving, but the engine will not reduce power output when wheel slip occurs, leading to wheel spin on slippery surfaces. As an auxiliary driving system, TRC helps improve driving stability, so it is generally recommended not to turn it off under normal driving conditions. However, if the vehicle is stuck in mud, sludge, or snow, the driver can turn off the TRC system to increase the engine power output to the wheels and help the vehicle escape from being stuck.
I've experienced this before. Last time when I was driving my friend's car, I suddenly noticed the TRC light on the dashboard was lit. Actually, the most common cause is accidentally hitting the ESP button with your elbow - the design near the steering wheel makes it really prone to accidental activation. If you notice the TRC yellow light flashing on the dashboard during turns, it's most likely the system actively intervening. Once when I was driving on mountain roads and experienced tire slip, I could clearly feel the brake pedal automatically pulsing. However, if the yellow light stays on constantly, you should take it seriously - it could be wheel speed sensors covered in mud or loose connectors, especially important to check tire wear during rain or snow. If the sensors fail, the entire traction control system will shut down, leading to longer braking distances on slippery surfaces. It's best to find time to visit a shop and read the trouble codes.
