Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Circuit/System Description
The Traction Control indicator is controlled by the instrument cluster via serial data messages from the electronic brake control module (EBCM). When the traction control system (TCS) is active for 0.5 seconds, the EBCM commands the instrument cluster to flash the traction control indicator.
The electronic brake control module (EBCM) sends a serial data message to the instrument panel cluster (IPC) to illuminate the TCS indicator when the EBCM has disabled the TCS system (TCS) due to a DTC. The TCS indicator will also turn ON during the instrument cluster bulb check. When the ignition switch is turned to ON, the TCS indicator will turn ON for approximately 3 seconds and then turn OFF.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.