SEAT Ateca SUV 1.5 TSI EVO (150ps) Xperience DSG

Under emergency braking conditions or slippery road surfaces, the anti-lock brake system (ABS) prevents the wheels from locking and maintains the car's steerability. Locked wheels can no longer transmit cornering forces, the car does not respond to steering commands. To prevent this from happening, the ABS control unit monitors the rotational speed of all wheels of the car by means of wheel speed sensors. If one of them threatens to lock, a solenoid valve in the control unit of the ABS reduces brake pressure for the respective wheel until it runs freely again, then the pressure is again increased up to the locking limit. The car remains stable and steerability is maintained. In modern ABS systems such as those employed in all SEAT models, this process takes place several times a second. The driver perceives the action of the ABS as a slight vibration of the brake pedal. In the ABS control range, despite maximum deceleration, the car can be steered easily to avoid obstacles and prevent a collision.

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.