Beep / Tone when turning trailer

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Mar 10, 2014 | 04:08 PM

rstazick

Thread Starter

5th Wheeling

Joined: Jun 2007

Posts: 30

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From: East Lyme

Beep / Tone when turning trailer

06 F-250 Lariat:
Bought a new tag along 2 horse trailer and when towing it home, turning sharp, had a beep / tone happen. It happened in mid turn, only lasted a couple of seconds. This has happened 3 times now, doesn't matter left or right. Nothing seems to be affected.
I have towed 2 different goose neck trailers and at least half a dozen other tag along trailers with no beeping. It sounds like a seat belt alarm tone.
I was thinking the built in brake controller may have lost connection momentarily. Any thoughts?

Thanks

Mar 11, 2014 | 07:46 AM

senix

Super Moderator

Joined: Aug 2008

Posts: 37,384

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From: Frederick, MD

Gave this some thought. I think a loose connection at the back of the truck might be the issue. The plug might be loosing contact.

I think the TBC is beeping because it is sensing a wiring fault for the trailer.

Check the pins at both plugs and make sure they are clean. Put a little grease on them as well.

Mar 11, 2014 | 08:19 AM

RV_Tech

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Joined: Jan 2010

Posts: 10,060

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From: Bristol, TN.

Given the problem is only with this one trailer, I would start with the trailer. The seven pin cord on the horse trailer isn't so long it is catching on the fender in turns is it? I had to rewire one where that was the problem. It finally tore the seven pin cord off the trailer completely off.

Steve

Mar 11, 2014 | 08:38 AM

Schlava

Mountain Pass

Joined: Aug 2006

Posts: 142

Likes: 13

This sounds dumb but does your truck have a back sensors? When the new trailer is hooked up to your truck is the box closer to the bumper? Maybe when you turn sharply the box is closer than other trailers and the sensors are setting off the alarm?

Mar 11, 2014 | 08:52 AM

RV_Tech

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Joined: Jan 2010

Posts: 10,060

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From: Bristol, TN.

Quote:

Originally Posted by Schlava

Interesting thought and certainly something I didn't think of!

Steve

Mar 11, 2014 | 02:10 PM

jdadamsjr

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Joined: Oct 2002

Posts: 11,314

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my first question is are you backing up and the plug is loose ?

OR - you have an issue with the truck 'sensing' it is in reverse and no trailer connected - i.e. a wiring harness issue....