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  #1  
Old 07-14-2019, 03:15 PM
alanpollenz alanpollenz is offline
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Join Date: Sep 2017
Boat: 2016 X23
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2016 X23 Trailer Brakes Locking Up in Reverse

I have a 2016 X23 trailer with a 7 pin connector. When I back up the brakes lock up and I have to insert the lockout pin to get the trailer to back up. I am using a 2018 Ford Expedition with the heavy duty towing package.

Troubleshooting so far. I had the dealer replace the pigtail, which was chaffed and corroded, and the dealer says the trailer is fine. The 7 pin connector on the Expedition tested fine with a 7 pin tester. When I picked the trailer up after the dealer repaired it, it did reverse, but I only backed up a few feet on level ground, so it is possible the tongue didn't compress far enough to activate the brakes.

When I hooked the Expedition to the trailer for an Avalon pontoon, it backed up normally, and when I hooked the X23 trailer to a 2018 Ford F-350, the trailer backed up fine.

It appears as though it is only my X23 trailer on my 2018 Expedition that has a problem. Any ideas?

Thanks.
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  #2  
Old 07-14-2019, 08:03 PM
bcd bcd is offline
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Do your trailer reverse lights turn on?

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  #3  
Old 07-15-2019, 06:27 AM
OHpage21 OHpage21 is offline
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Do you have proximity sensors turned on? My lockout doesn’t work if that system is turned on for some reason.


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  #4  
Old 07-15-2019, 07:14 AM
alanpollenz alanpollenz is offline
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Quote:
Originally Posted by bcd View Post
Do your trailer reverse lights turn on?

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Yes, all lights, turn signals, etc function properly. Thanks.
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  #5  
Old 07-15-2019, 07:15 AM
alanpollenz alanpollenz is offline
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Quote:
Originally Posted by OHpage21 View Post
Do you have proximity sensors turned on? My lockout doesn’t work if that system is turned on for some reason.


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Yes, but when the trailer is hooked up they are automatically disabled. I'm taking it in to the dealer when I can get an appointment. I'll ask them.
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  #6  
Old 07-15-2019, 08:38 AM
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Miss Rita Miss Rita is offline
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The lockout solenoid on the actuator isn’t getting power, or it’s not working. Make sure the blue wire on the trailer end is hot when the vehicle is in reverse. A second person should be able to hear the solenoid clicking. It’s an easy plug and play fix.

Another thought: I once had a perplexing trailer light problem that was due to a defective flat five to round seven adapter. It’s worth checking out.

Last edited by Miss Rita; 07-15-2019 at 08:56 AM.
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  #7  
Old 07-15-2019, 08:25 PM
alanpollenz alanpollenz is offline
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Join Date: Sep 2017
Boat: 2016 X23
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Quote:
Originally Posted by Miss Rita View Post
The lockout solenoid on the actuator isn’t getting power, or it’s not working. Make sure the blue wire on the trailer end is hot when the vehicle is in reverse. A second person should be able to hear the solenoid clicking. It’s an easy plug and play fix.

Another thought: I once had a perplexing trailer light problem that was due to a defective flat five to round seven adapter. It’s worth checking out.
Thanks. I am taking the truck to the Ford dealer, along with the trailer, tomorrow afternoon. There is no adapter. Both the trailer and truck are round 7 pin.

Alan
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  #8  
Old 07-15-2019, 09:14 PM
dh009 dh009 is offline
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I once had a trailer pigtail short that blew the reverse fuse on my F150 resulting in full brake lockup when trying to reverse. Replacing the fuse and fixing the pigtail short resolved the issue.
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  #9  
Old 07-16-2019, 12:50 AM
jgraham37128 jgraham37128 is offline
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You have a short. It’s blowing the fuse..... check fuse
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  #10  
Old 07-16-2019, 08:51 AM
bcd bcd is offline
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If your trailer reverse lights are on when you have the trailer plugged in and the truck in reverse, then the truck is correctly sending the power out.

If your trailer reverse lights are not on then that is your problem, the solenoid isn't getting power either.

I had the pins on the trailer plug wear or bend and weren't making good contact. My reverse lights weren't coming on and my trailer brakes were locked. I bent the pins in a little on the connector, and that fixed it for me.

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