The traction control system regulates spinning of the driven wheels and thus stabilises the car all the time it is being accelerated. The TCS and the associated electronic differential lock (EDS, XDS) are included in the scope of the electronic stabilisation programme (ESP). The TCS receives the essential input via the wheel speed sensors of the antilock braking system which register a sudden increase in wheel revolutions. By means of the motor control unit, the traction control system automatically lowers the power output. The worse the grip of the road, or the stronger the torque of an engine, the more important good traction is - and indeed over the entire speed range. So the TCS provides driving and tracking stability and thus above all safety and comfort. Moreover, unnecessary tyre wear is avoided. The TCS function can be disabled by means of the appropriate switch.