ASSISTANCE SYSTEM, PORTABLE WIRELESS TERMINAL, CONTROL METHOD FOR ASSISTANCE SYSTEM, CONTROL METHOD FOR PORTABLE WIRELESS TERMINAL, AND PROGRAM

The present invention obtains an assistance system capable of assisting with function setting of a straddle-type vehicle by a rider, a portable wireless terminal used for such an assistance system, a control method for such an assistance system, a control method for such a portable wireless terminal, and a program run on such a portable wireless terminal. In an assistance system (), an acquisition section () of a portable wireless terminal () wirelessly acquires information on the function setting operated on an input device () of a straddle-type vehicle (), and an input section () of the portable wireless terminal () provides a guidance corresponding to the information on the function setting operated on the input device () of the straddle-type vehicle () when accepting the operation of the function setting by the rider.