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Trailer isn't recognized by my F-150, no turn signals or brake lights on trailer eith

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Trailer isn't recognized by my F-150, no turn signals or brake lights on trailer eith

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Old 08-12-2018, 08:25 PM
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Default Trailer isn't recognized by my F-150, no turn signals or brake lights on trailer eith

2012 f-150 xlt
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Old 08-12-2018, 08:48 PM
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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.
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Old 08-12-2018, 09:13 PM
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Fuse and relay in bag in glove box?
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Old 08-13-2018, 09:04 AM
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Originally Posted by jdunk54nl View Post
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.
What he said.
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Old 08-13-2018, 09:13 AM
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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.
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Old 08-13-2018, 10:34 AM
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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.
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