2000 GMC Yukon XL "turn park aid 2006 ford" Questions

...aid sensors. Some times the sensors get corroded, and this can lead to a shut off on the system. On my 2007 Ford F-150, it starts working when I undo my seatbelt. I didn't figure the logic behind it, ...

turn the rear parkassist ON or OFF. how Active Park Assist works: The driver activates the system by pressing an instrument panelbutton, which activates the ultrasonic sensors to measure and identifya