It’s a function of ESP system and controls the vehicle drive and cuts in automatically every time one or both driving wheels slip.
In slipping conditions, two different control systems are activated:
❒ if the slipping involves both the driving wheels, the ASR function intervenes
reducing the power transmitted by the engine;
❒ if the slipping involves only one driving wheel, the ASR system cuts in automatically
braking the wheel that is slipping.
The action of the ASR is particularly helpful in the following circumstances:
❒ slipping of the inner wheel due to the effect of dynamic load changes or excessive
acceleration;
❒ too much power transmitted to the wheels also in relation to the conditions of
the road surface;
❒ acceleration on slippery, snowy or frozen surfaces;
❒ in the case of loss of grip on a wet surface (aquaplaning).
See also:
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