Yes, i-ACTIV AWD is fully automatic and uses 27 sensors including speed, steering angle, accelerator position, brake pressure, windscreen-wiper activation, outside temperature & gradient of the road to anticipate when driving all four wheels is needed.
On a flat dry road, torgue split is typically 99:1 (front:rear), rising to 95:5 or more for cornering stability, whereas a snowy hill start may be a 60:40 split to start, then 50:50 as slip is detected.