Trailer not registered as connected
Have a 2015 F350 towing a fifth wheel When I used to connect cord to the truck the dash would display "trailer connected" and engage brakes Now that alert is not displayed and brakes do not enga...
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When I was test towing a Jayco 4113, it displayed the brakes were not connected, lights and all worked. When I returned the tech said it was because there was not a battery on board. Not sure what you are towing, but maybe check your trailer battery connection if it's a Jayco.
