Symptoms
- Light labeled 'TCS OFF' or similar stays lit
- Pressing the traction control button doesn't seem to change anything
- May follow driving in deep snow or mud where it was manually turned off
Likely causes
- CommonTraction control manually turned off and not turned back onThe easiest explanation; the button may need a firmer or longer press.
- CommonStuck or faulty traction control buttonButtons can wear out or get stuck, especially with dirt or spilled liquid.
- PossibleSystem disabled itself due to a faultSome vehicles turn off traction control automatically when a sensor fails.
- Less commonSoftware glitch requiring a restartTurning the car off and on can sometimes clear this.
What to do
- Press and hold the traction control button firmly for a couple of seconds to toggle it back on.
- Turn the car off completely, wait a moment, and restart it to see if the light clears.
- Check if the button feels stuck, sticky, or doesn't click like other buttons on the dash.
- If the button seems fine but the light stays on, have the code read for an underlying fault.
- Address any wheel speed sensor or module issue found in the scan.
- Have a mechanic replace the button switch if it's mechanically stuck or unresponsive.
Tools and parts
Traction control switchSearch: “traction control button switch for your car make and model”
When to call a pro
See a mechanic if the light stays on after restarting the car and the button isn't visibly stuck, since a hidden fault may be disabling the system.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.