Hari ibintu bibiri mu gasanduku k'imodoka gatanga umwuka, kimwe ni ikigega cy'umwuka gishyushye, ikindi ni icyuma gikonjesha, amazi ari mu kigega cy'amazi cy'imodoka arashyushye, amazi yinjira mu kigega cy'umwuka gishyushye, umuyaga uhuhwa n'umufana ni wo mwuka ushyushye, kandi iyo ufunguye icyuma gikonjesha, ikigega cy'umwuka gishyushye kizahagarika amazi, icyuma gikonjesha cyatangiye gukora, icyuma gikonjesha cya compressor kiri mu kigega cy'umwuka, gisohoka mu mwuka ukonje karemano.
Agasanduku k'ibyuka ry'imodoka ni moteri y'imodoka n'igikoresho cya radiateri ifata umwuka ushyushye. Akamaro k'agasanduku k'ibyuka ry'imodoka ifata umwuka ushyushye ni uguhindura icyuma gikonjesha kikava ku mazi kikajya kuri gaze (ni ukuvuga ibyuka), kikanyunyuza ubushyuhe bwinshi hirya no hino, hanyuma ubushyuhe buke n'umuvuduko muke bikinjiza muri compressor, hanyuma inzira y'igikorwa ikagera ku ntego y'ubushyuhe buke. Mu mpeshyi kugira ngo habeho ahantu heza ho gutwara imodoka ku bagenzi, kugabanya umunaniro w'umushoferi, kunoza umutekano wo gutwara imodoka.
