ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,209,651, issued on Jan. 28, was assigned to FCA US LLC (Auburn Hills, Mich.).
"Transmission fluid change using internal pump" was invented by William R Mayhew (Ann Arbor, Mich.) and Steven Christ (Ann Arbor, Mich.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of draining transmission fluid through a drain hole of a transmission having an electrically driven auxiliary oil pump therein is provided. The method includes enabling, at a service computer, an oil drain service. The auxiliary oil pump is commanded on such that transmission fluid is pumped throughout the transmission and out of the drain hole. A determination is made whether the transmi...