車はコースをはずれた。

car; automobile; vehicle; wheel

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

course (route, trail, course of study, course of action, plan, option); full course meal (multiple dishes served in sequence); prix fixe meal

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

to be disconnected; to get out of place; to be off; to be out (e.g. of gear)