Ford Super Duty (1999-2016) :: 2008 F250 - Trailer Disconnected Message - Controller Starts Flashing
May 18, 2014
My 08, when I connect my 7-pin trailer up, bouncing down the road that message and tone CONSTANTLY going off....drives me nuts! I have went thru the wire harness 2x now, cleaned all the contacts, etc. Any other thing short of a 12 gauge? When it does pop on, the controller starts flashing...I've reached down a few times and manually hit the brakes and it still hits em so whatever it is, I feel its very minor or whatever....just don't know where to go now! All contacts have been cleaned good as well.
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I have (2) 2014 f250's both have given the trailer disconnected message randomly from the day they were new. Dealer says everything is with in specification. I just live with it now but something must be wrong with the design. Only does it when no trailer is connected an might be worse when it rains. Might have to hit the ok button every 10 minutes so on bad days.
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Where I can find a good used or a good deal on a new factory trailer brake controller to fit a 2006 F250 Diesel Truck?
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I tow a 5th wheel with my 2014 F-250 that has an factory TBC. I just installed Electric over Hydraulic disc brakes on my 5th wheel and was trying to see if there was a setting I needed to change on the TBC to tell it that is now E/H versus E. In the Information section of the dashboard display it talks about the controller actuating electric drum brakes but the manual talks about it being able to do electric AND E/H. What I need to do here...if anything?
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I've got an intermittent Trailer Wiring Error message that started appearing with a trailer connected on my '11 F250.
Brakes and lights work OK on the trailer, I thought I had read on the board here that there was a TSB for this, but I cannot find it.
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Driving the truck today I noticed mssg from info on dash " problem with trailer wiring". I wasn't hauling anything. the message went away on my next stop when a truck was turned off. On my next stop, I was pulling into a parking space truck stalled and I saw another message saying something like " please pull over safely and stop a truck." Luckily I was already parked. the truck would not start or even turn over. after about an hour truck started but brake symbol was on the dash.
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I've just bought a new 2016 SD xlt. The only extra I wanted that is missing is the factory trailer brake controller. The dealer told me it had to be programmed. I was expecting plug and play and planned to do it myself till they told me that. Is this true?
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Have recently been getting a "TBC Fault" message and the Beep, as the message goes on and off(annoying) looked around think its the Controler itself,,If I move the slider, and Jiggle it,,the message Blinks on and off as I move the Slider,,,Looking for the method of removing it from the Cubby Hole,,,Gave it a tug,,,and wiggle did not move must have a Clip or Tab to release it.
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I just traded in my trusty, never had a single issue 2008 Ford F150 with 53k miles for a 2008 Ford F350 with 112k miles. I figured the extra miles were okay, because it is a diesel. I purchased the truck to pull a 31’ 12k lbs when loaded toyhauler, and I have a 14K weight distribution hitch.
Just in case this makes a difference, here is some background information. I have a 2008 Ford F350 XLT 6.4L CrewCab Long Bed. Before purchasing it, I had Ford do a performance and safety inspection. Everything came back clear, so I bought it. The day after purchasing it, I changed all the fluids for peace of mind, ie. rear diff, transfer case, transmission, motor oil & filter, fuel filter, and radiator fluid.
Here is the problem. Occasionally, the 4x4 Low light will start blinking/flashing. Sometimes it will only flash once or twice and go off, other times it will flash for 15-20 seconds and then go off. There is no pattern to when it happens other than it seems to do it mostly when slowing down or breaking. It is very sporadic. I don’t drive very far for work, so I can go an entire week without seeing the light come on, but if I hit the highway for 30-45 minutes, the light will eventually turn on.
When it flashes, occasionally, I get an RPM increase…almost like it’s trying to engage natural or shift into 4x4 low at highway speeds…which causes me concerns. I took it to Ford and after 50 miles of driving it around, they could not get the 4x4 low light to come on. They said they pulled codes but there were none to pull. They reflashed the PCM and charged me $99 to not fix my problem.
I can shift into 4x4 high and 4x4 low (with the window rolled down, I can hear the shifting from 2wd to 4wd high and then to 4wd low and back to 2wd), so I don’t think it is a blown fuse or the control module. I removed and cleaned the wire connectors to the shift motor on the transfer case, and that didn’t fix it. I was thinking about replacing the rear diff abs speed sensor in hopes that will fix it. I think that maybe it’s a wiring issue, which I wouldn’t even know where to start.
I was getting 14 mpg before the reflash and after, I am now getting 8 mpg. Does this seem right? Or is there a learning period after a reflash before my mpg gets back to normal.
Also, the automatic 4x4 drive doesn't work. I don't think its holding a vaccum. I don't think it is related to the 4x4 low light coming on when I am doing normal driving. I can use the lockers to get 4x4 to work correctly. Infact, Ford is the one that told me the auto doesn't work.
Edit: I also noticed that if I flip ON any of the upfitter switches (ie AUX 1, AUX 2, AUX 3, AUX 4) the 4x4 low light will flash constantly until turned off. I currently don't use any of the switches for anything.
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We bought a 2012 f550 chassis and had a utility bed outfited. As far as I know the truck does not have a tow package (major F-up). They did install a receiver and electric in the rear. The 7 way pin in the rear does have the appropriate wires (including blue). I can not find the harness in the cab under the dash. I have looked near the radio where I have found the harness on our other trucks. I specifically looked for the red white and blue wire under there. Where is this harness? Is the harness still in the cab even without the tow package? This will be for the old school plug in controller, not the ford intergrated contoller.
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2012 F250 Lariat with 18k on the clock. FOr the past two months I've had a temporary side job on weekends and had to haul some trailers. I noticed my trailer gain operates sporadically and if I try and adjust it she tells me there's no trailer connected. I've edited the settings and reset all the settings also. I find this particularly annoying when towing the 4,000 lb trailer but I'm also hauling single axle trailers and it hasn't registered that I'm towing once.
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Just picked up my F250 a few days ago and it's been great up until yesterday when I hopped in to start her up and nothing. It's a brand new battery and all lights worked, but the dash was dead. I attempted in vain for an hour or so to diagnose as to why this was happening and just happened to open the door with the key in the ignition and hit the door lock button....all of a sudden the truck starts beeping and the message on the dash said "to disable alarm start vehicle". I turned the key, the dash lighted up and away I went. What I may have done to cause this or has it happened to you? I'm thinking it's something with the key fob but not sure.
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Every time I touch the brakes I now get a very annoying beep and an error message that says "wiring fault on trailer." I don't have a trailer hooked up so not for sure what's going on. The error message on the console I can live with but that loud beeping is driving me crazy.
If you hit the brake and keep the pedal depressed, then you only get the initial beep and then it goes away. The problem for me is I live north of Dallas so if I'm in traffic then I'm constantly hitting the brakes. I called my dealer today so I'll wait to hear what they have to say.
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I am looking at a 2014 f250, if has all of the options I want on a truck except the brake controller. Can a brake controller be added to this vehicle ? is it already wired for and do you just remove the blank plastic and pop in ? one ?
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Setup my Reese brake controller on my 2011 today. The lights, turnsignals, and brakes work when I push the brake pedal. But when I move the lever on the controller, I get nothing. Also, on the info screen, it still says trailer disconnected. What gives?
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First, need a wiring diagram for the outputs on the back of the brake controller module? I want to check and see if there is a problem with the connection to the rheostat. I can activate the trailer brakes with the slider bar but not with the brakes.
Second, where I can get a new OEM controller that will replace my old one if I can't "Cypher it out"?
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My father-in-law has a 2008 f-250 with the 5.4. as he was driving a while back all the gauges of the dash quit. The engine still kept running without any noticeable difference but when he shut the engine off and tried to restart, it wouldn't even crank but the security light was flashing. He tried starting it again a few hours later and it started just like normal and ran fine.
He has had this problem occur several times in the last few months, but the other day it repeated the problem again and would not restart for about 5 days. He has tried charging the batteries, changing relays, checking all fuses and finding none blown, scanned it with his code reader, and checked the steering column for bare or rubbed wires.
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I 2000 f250 throughout a few years.
Anyways, I recently aquired a tekonsha voyager (for free) and went to install it, but have run into a problem with the installation.
I searched to find a wire color guide to figure out what wires are which on the under dash connector, but cannot find the answer I'm searching for.
Currently I have a red, green, blue, brown, and yellow wire on the underdash connector, while the tekonsha only has red, white, blue, and black. (I know what colors do what on the controller, but am completly lost on the under dash plug, and can't trace it back without tearing out the entire dash assembly.
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I have a 2005 Ford F-250. I have checked power to the rear harness and all is good except for the tail/running lights.
Is there a fuse for the tail lights? I have checked the manual and don't see one called out. And the relays under the hood are labeled stop lights/turn signals and those are working fine.
I will see if I can trace the brown wire from the rear harness backwards, but it may be a simple fuse.
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Any info if the "Aux" terminal on the trailer harness wiring on '01 F250s is for reverse lighting? I'd like to put some on my stock trailer. Also, is the "12v" terminal feed switch operated or hot always?
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I have a 2005 ford f250 with the factory installed brake controller and towing package,until recently all was well,I tow a fairly large travel trailer and last time I hooked the trailer to the truck I noticed the running lights on the trailer were lit, I checked to make sure that I did not have the parking lights turned on or the headlights. I did find posts about the running lights not working and was surprised to find there is a relay somewhere on the central junction fuse block that was integral to the cfb and not user serviceable. Could my problem be that this relay failed in the closed position or am I not going in the right direction in my quest to find this problem. Also looking for a diagram of where this relay is located on the central junction fuse block? I would also consider doing a work around solution rather than having to replace the entire fuse block.
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