Drain plug for coolant is at the lower left corner of the radiator, facing backward toward the engine. The area is almost inaccessible to ordinary tools due to the cross-car beam immediately behind it, air conditioning piping nearby and the lip of the radiator retainer structure that is part of the front assembly (known in the industry as a grille opening reinforcement, or GOR). The plug is a small plastic insert with a flat tab. Be wary of this! The plugs often seize and the tab can be broken off far too easily. Some shade-tree mechanics avoid messing with the drain plugs at all, preferring to remove the lower radiator hose instead.