What does it mean when the Highlander displays 'TRC off'?
2 Answers
When the Highlander displays 'TRC off', it means the Traction Control System is turned off. The function of this system is to ensure the vehicle obtains appropriate traction under various driving conditions. TRC is simply Toyota's proprietary name for the Traction Control System. Similarly, Mercedes-Benz calls it ASR, BMW refers to it as DTC, and Cadillac labels it TCS. The Highlander is a vehicle produced by Toyota, representing a large-size SUV in the Toyota family, equipped with high-standard safety features typical of its class. In terms of body dimensions, the Highlander measures 4795mm in length, 1910mm in width, 1760mm in height, with a wheelbase of 2790mm.
TRC stands for Toyota Highlander's Traction Control System. When it shows as off, it means the system has been deactivated. This is likely because you manually turned it off by pressing a button in the car, or there might be a minor system malfunction. TRC helps prevent wheel slippage and is particularly useful in rainy, snowy conditions, or during rapid acceleration. When turned off, a warning light on the dashboard will alert you to the risk. If you manually turned it off, such as during off-roading to make it easier to get unstuck, that's generally fine, but try to turn it back on afterward. If it's a malfunction, possible causes include dirty wheel speed sensors, loose wiring, or a blown fuse. I'd recommend first trying to restart the car. If that doesn't work, take it to a professional shop to read the fault codes and check it out. Don't ignore safety concerns, especially on slippery roads where the system provides added security.