1. A method for controlling and regulating an adjusting device of a motor vehicle having an anti-jamming protection, the adjusting device being driven by a motorized drive, comprising: substantially continuously detecting input variables of the adjusting device; calculating a maximum permissible jamming force of the adjusting device as a function of the input variables; comparing a total force of the adjusting device to the maximum permissible jamming force; and if the total force exceeds the maximum permissible jamming force, switching off the motorized drive or regulating the motorized drive of the adjusting device; wherein the calculating of the maximum permissible jamming force of the adjusting device comprises: determining an individual force component as a function of corresponding input variables, each individual force component contributing to increasing or reducing the maximum possible jamming force of the adjusting device; and computing the maximum permissible jamming force of the adjusting device by a summation of the individual force components by entering each individual force component into a summation member with a positive sign or a negative sign depending on whether the individual force component assists or counteracts, respectively, the adjusting movement of the adjusting device.