2012 Toyota Prius Owners Manual - Page 398

1-4. Adjustable components (seats, mirrors, steering wheel) STEP 2 B Holding tab "A" and "B" together, insert both tabs all the way into the cover on the roof. 1 Before driving A STEP 3 A B With tab "B" inserted all the way into the cover, move tab "A" slightly back toward the cover's inlet, so that it blocks the inlet. 87