what is the purpose of the advance trac system
- Active-TRAC (A-TRAC) is the system for off-road 4WD vehicles. This system consists of independent four wheel brake control system and engine torque control system. This system applies the brake to any spinning wheel, and sends torque to the other wheels with grip. Q: What does the service AdvanceTracÂ® warning mean in the message center? Enter your car for a more accurate estimate. AvanceTrac is the electronic stability control (ESC) system used in Ford vehicles. It may also be referred to as âtraction controlâ or âvehicle dynamic controlâ is other vehicle models. This system monitors the steering stability of the vehicle and engages when skidding has been detected, or the loss of traction.