Fort Wayne, IN
reply to Gordo74
Re: [Help] 2001 Ford Focus ZTS Traction Light Comes On My guess is the wheel speed sensor at one or more of the wheels is bad. I can't speak specifically for your vehicle, but on many vehicles their is a gear on or in the hub that passes nearby a magnetic sensor. If the teeth have become rusty or contaminated, then the wheel speed can't be accurately detected. To prevent the system always trying to correct a problem that doesn't exist and causing additional wear or other issues, it shuts down the TCS.