How To Fix Trac Off and Check Engine Light in Toyota Corolla

Looking for information about “trac off” and “Check engine light” in Toyota Corolla? You have come to the right place. This article will tell you what to do if you face some problem with these features.

What are Trac Off and Check Engine Light warnings?

Out of the numerous car models in the Toyota lineup, Toyota Corolla 2013 is a very popular model with Trac and Check engine light on traits. On slippery roads/surfaces, Trac off works with the VSC system to provide stability and control to the driver. Vehicle Stability Control (VSC) stops the car from skidding, whereas Traction Control (TC) is responsible for preventing tires from rotating on slippery roads.

Some Toyota models have a control switch to turn the TC off if the car is stuck in mud or snow, but there is no such switch to turn the VSC system off.

If you find the check engine light is on, your car might be overheating or have low oil pressure.

Why would you want to turn the Trac or VSC off in Toyota Corolla?

When the car is stuck in swamp, snow, or mud, the best option for you is to turn the Trac off because when Trac is on the engine offers less power to the tires so you can control the vehicle easily on slippery ground. But to get out of snow/mud, your wheels will need power; hence turning Trac off will be the best solution.

How To Disable the Trac and VSC in Toyota Corolla 2013

On the left side of the vehicle, directly under the vent, you will find a button/switch. Press the switch once, and a yellow light will turn on, indicating that traction is off, but if you press and hold that button for about 3 to 4 seconds, another yellow light will turn on the dashboard's right side, which tells that VSC is also disabled. When the lights are ON, the TC is disabled, and when the lights are OFF, it means the TC is working.

Fixing the Trac Off and Check Engine Light Toyota Corolla Problem

  • To fix the Trac Off and Check Engine Light problem, you will need to perform a zero-point calibration (without auto-scanner) on your Toyota corolla 2013 by following these steps.
  • The car must be on a level surface.
  • Wait for 5 minutes after disconnecting the positive and negative terminal of the battery.
  • Reconnect the terminals after 5 minutes. The next step is to locate the Onboard Diagnostic connection port (OBD), which is usually present under the dashboard. From the repair manual of your vehicle, find the Charlie George (CG) and Tom San (TS) connection terminal on OBD.
  • Get two small paper clips and straighten them to form wires. Now put one clip/wire in the CG port and the other clip in the TS terminal. Make sure the other ends of these two clips are not touching anything.
  • The steering must be centered, and the front wheels should be lined up straight.
  • Insert the key and turn it ON without starting the engine.
  • Use the shift lever or parking brake to ground the car.
  • Keep the car completely still and clap (connect and disconnect) the free ends of both wires together quickly for about six times in 8 seconds. ABS and VSC lights will flash and stop simultaneously (might be different for your vehicle), indicating that calibration data is now cleared.
  • Turn the key off. The car can now be recalibrated.
  • Turn the key to the ON position, do not start the engine. Press the two paper clips together; this will make the ABS and VSC light flash faster than before (can be different), indicating that calibration is complete.
  • Turn the key off and remove the clips from OBD.
  • Turn the engine on. The warning message should have been cleared now.
  • Run the car straight at 25mph or higher for 10 seconds.
  • This is how a zero-point calibration is done to fix the Trac Off and Check Engine warnings in your Toyota Corolla.