At least 40% of all fatal road crashes are the result of skidding. Studies show that ESC could reduce skidding crashes by up to 80%.
ESC works by using a number of intelligent sensors that detect loss of control. 25 times per second ESC checks the driver's steering intention against the actual vehicle direction. When these are not in sync, and the car is starting to slide out of control, ESC intervenes. It reduces engine power in order to restore the vehicle's stability. If this intervention is insufficient, it additionally applies braking power to individual wheels. The resulting turning movement of the vehicle counteracts the skidding movement. Within physical limits, the car thus remains safely on track.
Is ESC different from the Antilock Braking System (ABS) and the Traction Control?
ESC incorporates all the components of ABS and Traction Control, with the additional benefits of stability control. By preventing the wheels from locking-up, ABS keeps the vehicle steerable when you need to brake strongly. Traction Control prevents the wheels from slipping when you are accelerating and ensures optimal traction. While ABS and Traction Control work in the driving (longitudinal) direction, ESC helps you to cope with sideways (lateral) movements which lead to skidding.
Are there different names for ESC?
Yes. ESC is available under different names: it can be called ESP® (Electronic Stability Program), DSC (Dynamic Stability Control), VSA (Vehicle Stability Assist) or VSC (Vehicle Stability Control) for example.
Do I need to activate ESC when starting the engine?
No. ESC is always on and enabled once you start the engine. Some manufacturers equip their vehicles with an ESC switch. When pressing this switch you normally deactivate Traction Control. You will notice this by a warning lamp appearing in your dashboard. The deactivation of Traction Control is sometimes useful when you find yourself in a driving situation where you want the wheels to slip e.g. snow.
Can I have ESC retrofitted in my car?
No. ESC cannot be retrofitted. Therefore make sure you make the right decision from the start when buying your next car. Choose one with ESC on board.
Do I have to change my driving behavior when I drive a car with ESC?
No. ESC supports the driving in critical skidding situations. It does not require any change in driving styles. You should always drive attentively and carefully.
ESC is mainly available as standard equipment in the premium and medium car segment. In small cars it is mostly offered as an option or not available at all. Next time you are buying a car think about ESC. Ask your dealer for a model that is ESC equipped.
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