Hello! I have a 2008 F250 crewcab, 5.4, 2wd, 3.73, with Tow Command. I basically love the TC, seems much better than the aftermarket brake controllers I've had in the past... BUT...

Every so often since I've owned it (bought it new), especially after going over a bump it seems, the Tow Command will beep and say "Trailer Disconnected". A minute or so later everything returns to normal. This happens with two different trailers, so I think it is the truck and not the trailers. I have checked over everything, and it all seems okay - connections, good wires, etc.

I just haven't bothered much about it, because I always forget about it until it happens again. On a camping forum, another guy had the same problem and his dealer "re-wired" the truck connection and he says everything is fine now. I have asked for more info, haven't got it yet.

Anyone else run into this? What did you do?

Thanks!

 

The plug on the trailer to the truck is tight right? no play at all?

 

Mine does the same thing to. All my wires are snug and nothings loose.

 

Check and clean the connectors. Check the ground points both in the truck and trailer.

 

The tow command is a finicky system, and too high of resistance and it will tell you you have a problem, whereas the aftermarket controllers just keep supplying voltage. I've had issues with mine due to corrosion in the plug. The last time I ended up replacing the whole plug to get the TBC to like the trailer again.

 

I had the same problem with my truck. It ended up being the connector on the trailer. When it was plugged into the truck it felt tight but the flat spade terminals on the truck were not being held tight in the trailer plug. When i went over bumps i would lose the connection. All I did to fix it was take a needlnose and sqeeze the trailers female terminals together to make them tighter on the trucks spade terminal.Haven't had a problem since.

 

I will look into that. I tow a lot, and switch trailers all the time, so the connectors get well used.

If just one or two connectors are loose, would that cause the TC to say disconnection?

 

I'm not sure, all i know is that i haven't had the problem since. Hope it helps you out!

 

Could be... I've noticed both taillights flash on my truck when plugging the trailer in, so I know the truck's computer is checking at least the taillights, brake, and ground connections, maybe the parking lights, but I doubt it's checking the reverse or charge connections.

 

When this happens are you pulling a trailer with brakes or using the small flat plug? If you're using the flat 4 pin connector then the trailer is probably grounding through the hitch and looses connection when you hit a bump. Most 4 pin connectors have a short ground wire, but few people actually ground it to the trailer frame.

 

Both my trailers that I pull are grounded to the trailer frame, but thanks for reminding me I will double check that.