Trailer isn't recognized by my F-150, no turn signals or brake lights on trailer eith
08-12-2018, 08:48 PM
#2
Senior Member
7 pin connector or 4 pin? If 4 pin it won't automatically be recognized but the lights should still work, only 7 pin gets auto recognized. Check power at the plug and check fuses for trailer.
08-12-2018, 09:13 PM
#3
Senior Member
Fuse and relay in bag in glove box?
08-13-2018, 09:04 AM
#4
Senior Member
08-13-2018, 09:13 AM
#5
Senior Member
The first place I would look for a trailer light problem is a bad/broken ground on the trailer frame or at the plug. It would also keep the truck from recognizing your trailer.
08-13-2018, 10:34 AM
#6
Senior Member
Had that issue on my 2009 a couple months ago while towing a trailer home. First time I had towed with the truck, not sure how long it had been for the previous owner but I think the contacts just needed cleaned. Took some electronic contact cleaner and sprayed both the truck and trailer plug then plugged and unplugged it about a dozen times. After that it worked fine for 1,600 miles.