My van started giving me the "Rear Park Aid Disabled, Trailer Attached" code a few weeks ago. It would come and go. Then today the right blinker started flashing fast. Dealership cannot get me in for another week. Anybody figure out what is going on?
For what it's worth. My 2017 transit 150 left side blinking fast, bulbs all work....was an issue in the trailer hook ups. Mine has a 7 pin and 4 pin. If you look on the 7 pin it gives you a diagram. i.e. left blinker. Right blinker etc. On mine the yellow wire runs the left lights...blinker, break. Those wires jump over to the 4 pin internally to operate left, right, parking lamps (pl) the issue was in that internally. Picked up a whole new trailer plug-in receptacle and fixed the issue. Hope this helps.
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