sax player

Hello all. Havnt had the car for a week (d2 es td5) and have had an accident. Going down a single track road only about 20 mph, vehicle approaching hit the brakes, one wheel locks up because mud / ice on the verge, ABS comes on and the car doesnt stop in time. If it had not come on there was plenty of stopping distance My question is can we adjust the sensitivity off the ABS. shaun