Check Trailer Warning Comes On When No Trailer Is Hitched

KCTractors · Feb 3, 2014

Have a '05 F-250 with the "Tow Command" system and the "Check Trailer" warning comes on when there no trailer hooked on. A guy following me said that the brake lights come at the same time that happens. Called the local Ford Dealer and they said to bring it in. That would be like giving them a open checkbook. It does not do it all the time, but it seems to be getting worse. Any idea's? It only has 33,500 miles on it.

Steve@Advance · Feb 3, 2014

I would start by opening up the trailer plug receptacles, look for corroded connections, loose wires, etc. that could be causing a "cross over" connection between the terminals.

Also follow the wiring harness from the receptacle forward, check it for damage, crushed, cut, burned, etc.

Anonymous-0 · Feb 4, 2014

Ours does the same thing. Didn't know bout the brake lights. It is now in the dealers shop and was told it will be until the end of March. Part backordered. Something with the urea system. They will not let it out the door nor pay me for my lost usage. Think I'll turn it over to the war department.

KCTractors · Feb 4, 2014

Replaced the plug and checked all the wiring in the back already, didn't make difference!The wires were clean, bright and tight.

massey333 · Feb 4, 2014

Don't know what the problem is or was,but some of the 05s did have problems and some didn't.The ones I know of were fixed in half hr.to an hour.

T in NE · Feb 4, 2014

Is the switch on the brake pedal out of adjustment?

The pedal on my old Dodge moves just enough to light up the LED on my brake controller.

Oldiron29 · Feb 5, 2014

KC, if you Google it you will find it is a common problem with the ford tow command.
There is a sensor that has bad seals from the weather and it willneed to be repaced.
I had it on 07 f-350 oldiron29

showcrop · Feb 5, 2014

(quoted from post at 04:50:31 02/05/14) KC, if you Google it you will find it is a common problem with the ford tow command.
There is a sensor that has bad seals from the weather and it willneed to be repaced.
I had it on 07 f-350 oldiron29

Old Iron, I have not had those problems yet with the trailer brake controller on my '06 350, but I would like to head them off If the problem is coming. I have googled tow command and have not been able to find anything about a seal. Can you give more specific Info please?

KCTractors · Feb 5, 2014

OldIron29, Do you know where it is and the part#. Thanks

Oldiron29 · Feb 5, 2014

sensor was on the master brake cyl. on fire wall.
Google it lots of info on web about it. I do not have part #. oldiron29

showcrop · Feb 5, 2014

(quoted from post at 08:33:25 02/05/14) sensor was on the master brake cyl. on fire wall.
Google it lots of info on web about it. I do not have part #. oldiron29

Old Iron What is "it" to google?

Oldiron29 · Feb 5, 2014

Google ford f-350 TBC Fault or code

Brian Jasper co. Ia · Feb 5, 2014

Without knowing the DTC(S) stored, first thing I'd recommend is thoroughly clean the socket on the truck. Moisture in the socket can cause cross feeding and confuse the TBC module. Use compressed air (wear your safety glasses) to clean any moisture out. If you can find out what codes are present, it might be an easy repair.

OnDaRoad · Feb 6, 2014

Read this:

@ http://forums.woodalls.com/Index.cfm/fuseaction/thread/tid/27255892/srt/pa/pging/1/page/1.cfm

OnDaRoad · Feb 6, 2014

Click on the link ...
2005 Tow Command Troubleshoot

Check Trailer Warning Comes On When No Trailer Is Hitched

KCTractors

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Anonymous-0

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KCTractors

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T in NE

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showcrop

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