Ford Super Duty (1999-2016) :: F250 - Horn Won't Shut Off?
Apr 21, 2015
Okay so I have an e99 f250 7.3 the problem all started went I hit a puddle the other day. My horn started going crazy and wouldn't shut off so I had to pull the fuse and relay. After that I found another problem, all my dash lights,headlights and running lights will not turn off unless I pull the battery terminals, it does not matter which way the headlight switch is it can be on or off and they stay on. I did find it though if I pull the negative terminals and put them back on the lights stay off if I turn the switch on and try to turn the lights back off with the switch they stay stuck on again untill I pull the terminals what could be the problem I've looked at every fuse and can't find the probelm.
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I have a 2001 F250 V10, 150,000 miles, gas, very basic truck (no power windows, no cruise, no security system, no power locks, etc). In it's previous life, it was an IDOT highway truck I purchased at auction in 2005. Used primarily to pull horse trailer, less than 2000 miles per year. Stored under cover when not in use. Windshield leaks very little, but generally not used when raining.
Last week, 9pm, horn starts blaring solid tone. I go out and unlock door, open door, it stops. I start truck, still fine, turn truck off. Lock door, close door, starts blaring again. I reopen door, leave unlocked, close door, then get intermittent beeps. I reopen door, disconnect battery because it's late, I was going out of town, and felt bad for my neighbors. Just got back in town, too afraid to reconnect battery and not be home in case it starts going off again. I had last used the truck about 36 hours before the horn started going off, weather about 70 degrees overnight.
I've read other threads, but can't find one that fits (I have no cruise, kept out of rain, not freezing cold, not diesel).
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The other day I was checking out my parking aids (they kept saying something was behind me when there was nothing there) and the horn just started blowing by itself, constant on until I disconnected the batteries. Been a few days and just got back to working on it, checked the horn switch in the airbag and it is functioning fine. Hooked the batteries back up, no horn, but after a couple of minutes I start getting little honks out of it, then locked on again. Where I should go from here? Truck was parked, switch off, engine off today when I hooked the batteries up. Never started it or turned the key on.
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Horn isn't working found fuse blown. Replaced fuse and horn stays on. Swapped relays still stays on. With fuse out pressing left side of horn cover on steering wheel I can feel/hear relay click. Pressing right side not so much. What and where to check? Is there a way to disconnect the horn buttons on the steering wheel?
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I have a 2001 f250 5.4 triton. My cb antenna hole leaked water in cab, soaked my fuse block. Horn goes on and off, radio turns on without key in ignition, truck only starts when key is on and I bridge solenoid, and number 4 coil is not firing. I have let truck dry out, fixed the leak. Everything is bad to normal except starting issue and coil issue.
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I bought this truck used and it is my first F-250. I took it to the shop last week and they found a few things and a cracked radiator was one. They replaced the radiator with a new one. I heard the sound before the new radiator and I still hear it now. The coolant level is not dropping and the engine is not over heating (also no fluid on the ground). Is this a normal cool down sound?
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I have a 2006 F-250 Super Duty (6 liter diesel). The high beams stay on unless I pull the fuse (fuse 30). It doesn't matter what position the headlight switch is in. It is like the high beam flash on the multi-function switch is stuck. It feels fine, but high beams stay on regardless of position, even with the truck off. The low beams (if in low beam when the truck is shut off) do go out as do the running lights after 15 or so seconds (normal) it's just the high beams. Also the high beam indicator light is on all the time (until I pull the fuse) and the fog lights will not come on until I pull the fuse. Should I replace the multifunction switch or look elsewhere?
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I'm in having emission problems with my 2010 F250 lariat 6.4 diesel truck my DPF filter keeps getting clogged up engine just shut off on me then I sent it to get cleaned professionally got it installed drive it for 20 miles and my pick up shut off on me and left me stranded and I can't seem to pass inspection...
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We currently have a 2011 F250. During the day time, when you turn on the headlights all the way (not just on "auto"), the dash lights and clock shut off. Originally, I thought that they were just dimmed to the point where you couldn't see them, but the brightness is already turned all the way up on the dash lights. If I turn the brightness up any higher, the dome lights turn on, but the dash and clock remain off. If you return the headlights back to the "off" or "auto" position, the clock and dash return to their normal brightness.
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Ok truck shut down wouldn't start back. Put fuel filter o. Frame cranks but won't start. Was told has high pressure oil leak in engine?
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I have a 2002 f250 SD v10 4x4. I had a ground wire break fixed that know noon of my instruments work. Dash lights up but nothing moves. Pulse my parking lights stay on when the truck is shut off or when I turn lights on then off. I have to disconnect the battery to get hem to shut off.
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While driving up hill at 60mph the truck lost power. Rpm jumped up as to change gears as it hit 55mph. Still losing power until it shut off. I tried to restart and just got a click from the solenoid. No engine codes whatsoever. Battery had 12.1 volts but when turning the key to start in getting 8 volts. Had it towed home. Today I swapped batteries with my other truck and same click noise from solenoid. All lights, radio, ect still work. Where should I start? Alternator, fuses...?? 2008 f250 5.4 ...
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03 f 250 super duty, my battery light came on and when I accelerate my dash gauges shut down and radio turns off, if I idle or stay under twenty MPH, everything works fine. Battery and alternator test good, lights never dim, any thoughts
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So I'll be driving down the road and the gauges will randomly start jumping around then the truck will just shut off, this just started a couple days ago, it seems to be gaining in frequency, when i try and restart the engine all my warning lights flash on and nothing happens, try again and it starts back up, now the last time it happened all of the above happened but it was followed by a fast clicking noise from under the steering column, it has to be a electrical issue as i have full tanks and motor is in tip top shape. Also no codes pop up with my code reader.
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I have 2002 F250SD, The horn just starts blowing by itself. Bump the horn switch and it stops for a couple of weeks. I've looked at the wires to the fuse box and no wires shorting out the horn wire. I read some very old posts but nothing conclusive was ever decided on, just a lot of guessing. The horn switch has always been sensitive.
Somebody said the air bag is warming up in the sun and expanding causing the horn to blow. Somebody said the horn relay, but in 55 years of working on trucks, I have never had a horn relay act like that. I'm told the horn relay is built in the back of the fuse box and it all has to be replaced. Some say the clock switch. I don't know what that is or where it is. I guess inside the steering wheel. Is it hard to replace?
Where do I go from here....
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In my new to me 99 F250 SD ,Started today off with switch sticking in drivers door causing dome light to be on when doors closed... oiled the crap out of the door mechanism and it started working. Later in the night I look out side notice the radio lights on with no key. Can't figure it out so pulled the face off and figure I'll look at it tomorrow and go to bed.
1:30 am the horns blaring! I open drivers door and horn stops, close it and it goes off I ended up pulling the batt cable so I could go back in the house. I did search for info with no sure real causes. Seems like it has happened to others as well.. BTW it did start raining before the radio stayed on. Thinking water in the dash or fuse panel. But it doesn't explain door switch problems I had earlier. Maybe 2 separate problems. This will be fun! Not!
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Sitting in the house, heard a horn blowing and ran outside to find my F350's horn was blowing. When I pushed on the horn button on the steering wheel it quit. Couple of hours later, it started blowing again. Pushed the horn button to make it stop and removed the fuse so it would not start blowing again. Did a forum search, but didn't have any luck. Short in steering wheel?
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My brothers truck has unusual problem of when parked the horn randomly comes on and stays on? Why?
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Been searching but can't find a clue. I replaced my steering gear box. Went fine, but after starting back up. My alarm goes off, my cruise or horn doesn't work and my air bag is giving a code 32.
Is there a ground wire or something I could of missed when installing the gear box?
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F250 today at 61300 miles going down the interstate today my vehicle made a strange new noise that sounds like an old timey car horn. The sound started at about 75mph and comes and goes depending on what appears to be air turbulance and other vehicles nearby or goes away as the speed comes back down to lower numbers. Also when the sound is present you can "feel" it in the side handle on the A post. Really weird. Doors were closed all around.
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I have a 2001 F-250 SD XLT with the ABS light on, cruise control doesnt work and the horn only works with the key out. The codes for the ABS is no signal input from the left and right front wheel sensors. No problem there. Also my speedo stops or jumps when I press the horn button while driving down the road. When I quit pressing the horn button the speedo works fine. So after looking over the posts on cruise control, etc. Does the rear speed sensor have anything to do with the cruise, horn not working? All fuses are good so I am thinking the cruise control switch on the master cylinder or a short in the steering wheel column or my ignition switch. What do you all think?
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