Some menus will either require you to be on the seat or off of it to appear. It is possible there is a bad seat switch. Sometimes the cables rub on metal parts inside the seats causing the cable to get cut. If the seat isnt depressed hydraulic functions will not work and if normally will set off an alarm and the screen should display "seat" to indicate there is no one on the seat. That is the best way to test the seat switch in my opinion.
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