Ford Super Duty (1999-2016) :: Trailer Brakes Quit Working?
Apr 22, 2015
This past weekend I loaded up my 3 horses on my trailer and found out going down a hill that my trailer brakes aren't coming on and tracked this down to a problem with the truck. Need to troubleshoot this before taking it to a dealer to check wiring problems for shorts somewhere.
What doesn't work: trailer brakes not getting any power to the brakes. When I first pulled out the truck had error message popping up saying Trailer wiring fault and once in a while that would disappear then come back on and once or twice went to Trailer disconnected. My friends hooked up my trailer to their truck and the brakes worked on the trailer.
What's working: turn signals and brake lights coming on in the trailer.
What we checked so far: fuses, sprayed truck plug with wd40 on the pins. The brake pedal not activating the brakes and tried just the slider bar on the ford integrated brake control box.
Background: brakes were working fine back in October. December hauled them a short distance and didn't notice any braking problem but road was mainly flat and when coming down a small grade they seemed fine but I was going slow also. Back in January, I took the truck to a Firestone to get general maintenance work done on it including truck brakes checked for wear and tear and they had to replace the truck battery.
Where does the truck ground wire go to in the truck to ground it out? All that I can find is that it has to go to some pure metal, no painted surface but can't find anywhere on where to check this out on the truck to see if it is still making contact. Could the guys at Firestone have not hooked something back up or knocked it. The last thing that I would like to look at before getting the wires all tested. I have a 2008 F250, gas
View 2 Replies
Advertisement
Was moving a boat on a trailer with surge brakes and found I could not back it up. Found that I had no power on the center pin on the round 7 seven trailer connector.
When backing this type of trailer the back up light power opens a solenoid that keeps the brakes from working in reverse. Don't know how long its been like this because this is the first time I moved this trailer. The question is where is the fuse and or relay for this. The back up lights on the truck do work.
2007 F350 6.0 ....
View 11 Replies
Not working at plug.
I see there is right turn/stop relay.
Does this relay ever go bad?
All other trailer lights work.
View 8 Replies
My air conditioning on my 02 is having a issue, when you first start it and run the ac all is well and it cools perfect but then after a while it will quit working all together no more cold air, shut it off for a bit then it starts working again and repeats the process, charge is fine, been doing this all summer, it verys on how long it will work somethings for 5 minutes other times 40 minutes give or take, any thoughts?
View 2 Replies
Troubleshooting a problem with friend's 2000 F250. His power windows aren't working and are causing problems with his door locks and interior lights. When he tries to use his drivers side power window, his power door locks quit working. If he puts the switch to raise, the interior lights flash. From what I've read, it sounds like the GEM to me, we've inspected the wiring and it all looks good. I pulled it out today and it looks good inside, no sign of water leaks on it. If it is the gem, how much do they cost and do they require programming?
View 5 Replies
2004 ford f 350 super duty, 6.0 Liters international diesel, 4door, 4x4, long bed, dual rear wheels. Over 200,000 mileage. I have no power to the trucks brake lights and no power to the tow plugs trailer brake lights, which is the center left and the center right tow plug blade style contacts, while using a 12 volt test light! All fuses are showing good and I replaced the brake switch at the brake pedal, and I also replaced the towing plug with the short wire and connector at rear of truck which is under the rear bumper and the frame mounted tow hitch bar
- Are there any relays that control the truck brake lights and the trailer brake lights ?
- If yes where are the brake relays exactly?
- Have I missed or not done something else to correct the problem?
View 3 Replies
On occasion I'll have the reverse sensors quit working. I'll drop the shifter in reverse and the 'OFF' light on the button will illuminate. I took the sensors out and blew them clean with compressed air, dielectric geased the connectors and reinstalled the plugs. Let's see if that does the trick.
As mentioned, it's occasional and nothing in particular will trigger the fault....it's very random. Something tells I haven't seen the end of this problem, but tracking an intermittent fault is tough.
View 9 Replies
I took my truck in for Maryland State inspection on Monday and got my truck back and the radio no longer works. I checked the fuse on both the back of the radio and the main fuse box and both fuses are still intact. I'm not really sure where to go from here. Any recommendations?
View 2 Replies
Occasionally while driving my 2005 F250 the speedometer will quit working & the abs light will come on. The transmission will also start to shift weird. If I pull over, shut the truck off & restart it everything is fine again. I can go weeks at a time before it happens again, but yesterday it happened twice. The transmission doesn't seem to shift real fast, but I think that is a separate issue. My first instinct is that the rear VSS is starting to go out, but I am not sure if these symptoms are common.
View 1 Replies
I can not hear the radio in my 2011 F350 XLT. I don't know what radio options there were for the XLT but mine has a Sync USB port, Bluetooth, steering wheel controls, CD player but it does not have a big display or touchscreen or anything like that.
When I try to adjust the volume with either the steering wheel or the radio dial, the indicator shows the volume is at half but the volume will not go up or down. I can hear nothing. All other buttons appear to work.
Have Inaccidentally gotten into some more that doesn't allow it to play any sound or adjust volume or is something just flat out wrong?
View 4 Replies
I have a 1999 f250 crew cab. About 6 months ago my drivers side window quit working in the up position(lucky me) and last week I got around to fixing it . I just ordered a new window motor instead of the whole regulator and installed it and it worked perfect for 4 days and today it suddenly quit again. What would cause a window motor to go out again so quick? Everything else seems to be fine and there is power to it so I'm assuming it's the motor.
View 2 Replies
My overhead display quit working earlier this week. The truck has 120k miles. Is this display on it's own fuse? I only used it for the outside temperature readout but I would really like to get it working again.
View 3 Replies
I have a 7.3l 02 f450. The wipers won't work on any low speeds and only on the fastest will they work. And if you switch it from the fastest to any other speeds, the wipers stop right where they are.
View 1 Replies
Funny thing - had the truck in the body shop for several weeks and when it went in, everything worked. Got it back, and some of the radio buttons don't work. These are rocker style buttons, and when I push the AM (left side) that works. Press FM, and it won't go to FM. Press the right side of the tuning button, and it won't go up the dial. Press the left side, and it will go down. Same for cd. Left side of button goes backward through the tracks, but right side won't advance. Bass/treble button: Press bass (left side) and that works. Press treble (right side), and nothing.
View 2 Replies
2005 6.0 F350 dually, speedometer quit working and the ABS light came on. I replaced the speedo sensor in the diff, but to no avail. Hear a lot about the cluster, however nothing with the ABS light on.
View 3 Replies
2004 F250. Just got about 6 inches of snow. I use this truck to plow my private road. A few other residences on the road rely on my plowing.
I usually use 4WD Low and gear 2 on automatic transmission to plow. Hub manually locked. But today, when I shifted to 2, and pressed on the gas pedal. The truck was not engaging to drive, as if it were in park or neutral. And when I tried to shift to park, there is grinding noise and wouldn't allow me. I had to turn off the engine to be able to shift to park.
When I manually freed the hub and used 2WD High and gear D, I was able to drive the truck without problem.
Later, I tried using 4WD Low and gear D, and was able to drive a little distance before the truck no longer drives, and pressing on the gas is as if the truck was in park or neutral.
Previous to this earlier, I was driving down the private road to see how much snow we got. Without the plow on, I might have gone up to 10 or 15 mph, and still using 4WD Low and gear 2, maybe for 1/2 mile. Could I have damaged something by driving too fast in that setting?
View 9 Replies
So my cruise quit working AND my air bag light came on... NO codes and my other steering buttons and horn work?? everything I read points to the spiral cable since the AB light is on. But the horn works?? I don't see how the pressure switch or the brake and clutch switch would make the ab light come on...
View 2 Replies
I have a 2002 F250, 5.4 extended cab 4x4. Factory lights. I have no turn signals. They were working just fine and without turning off the truck, all 4 corners quit working at the same time, as far as I know. The indicator lights on the instrument cluster don't work. I have checked/replaced all fuses. Replaced the switch lever and the blinker relay behind the dash. The hazards do work and always have. It might be coincidence but I believe the back-up lights quit working at the same time.
View 2 Replies
A quick trip from Tulsa to Dallas and back over the weekend...1st time the 2011 F350 diesel dually has been on the highway in a few months. Going down Friday night the speed control worked fine but on the trip home Saturday, the speed control will turn on....yellow light on dash is on. Press SET, the speed control light turns green, but it will not maintain the speed... just like it is not on at all. Did not take time to stop and shut off the engine to try to reboot, and I may go out now and it will work just fine... But, hat might be going on?
View 1 Replies
The water pump on my 2015 350 (6.2L) failed this morning and the dealer says it needs to be replaced. What might have caused it?
View 6 Replies
Trying to replace sliding glass motor, quit working and had to cut the cable to shut it due to the rain. It appears I need to remove the seat belts & covers next.
View 4 Replies
