A control unit of an at least temporarily four wheel-driven motor vehicle
is provided. The control unit is arranged such that a displacement path
for an actuator that actuates a transmission clutch is assigned to a
setpoint clutch torque via a characteristic curve, and when at least one
defined operating condition is present, ensures stable operation of the
wheels. The control unit specifies a displacement path which according to
the characteristic curve results in a not completely locked state of the
transmission clutch, and subsequently computes the actual clutch torque
from only the drive slip on the front axle, the drive slip on the rear
axle, and the total drive torque.