US Patent 10059161 Capacitive monitoring of vehicle hitches

Method and apparatus are disclosed for capacitive monitoring of vehicle hitches. An example vehicle includes a hitch that includes a body, a hitch ball, and a sleeve that electrically insulates the hitch ball from the body. The example vehicle also includes a hitch module including a capacitive switch electrically coupled to the hitch ball. The hitch module is to wirelessly emit an alert that a trailer has decoupled from the hitch responsive to the capacitive switch detecting, via the hitch ball, a predetermined increase in capacitance.