Ford Super Duty (1999-2016) :: 2003 F250 - Lost Function Of Brake Lights / Turn Signals And Hazard Flashers
Feb 7, 2016
Recently, I lost function of brake lights, turn signals, and hazard flashers. All happened at the same time. Some threads discuss flasher relays, short steering column wiring (position of steering wheel), and fuse failures.
I checked #18 fuse and a few others. All had continuity. I assumed my bulbs were all good. My hazard push-pull switch did not feel right. There didn't seem to be engagement. At this point, there was a good chance that the multi-function column switch had failed so I decided to try replacing it. I'm happy to report that this switch was the cause of all the light function failures and now, all is well again.
Removal is done by prying the key lock switch cover off,, removing three 1" Philips head screws that attach the lower column shield to the upper shield. At that point the upper shield can be completely removed. The lower shield was not totally removed because the tilt lever was left on. The switch is attached to the column with two 3/4" Torx 20 fasteners. The upper is easily accessible and the lower fastener can be removed by pulling the lower column shield down so access can be achieved. The two wiring harnesses have a conventional harness lock to depress and the connectors pull outward from the switch. Installation is the reverse of removal, noting the dowel locator and small plastic dowel on the lower shield.
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I have a 2006 F250 Superduty 4x4 that the brake lights hazards and turn signals have stopped working in the rear.. The middle cab brake light does not work either.. The running lights do work as well as the turn signal and all lights in the front.. I also checked the trailer plugs and both work for running brake and signal lights.. I have checked all fuses under the hood as well under the dash with a test light and i have nothing blown.. I have replaced the Brake switch as well as the flasher module under the dash and picked up a new multifunction switch (Turn signal/hazard) and that didn't work either.. I'm stumped at this point.. I have not checked the bulbs yet but wouldn't think they would all blow at the same time.. (will do this next)..
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I was adding some more running lights today and tried to tie in to the front running/turn signal light. Next thing I know I hear a pop and now no turn signals, hazards or brake lights on my 99 F250 SD V10. My 3rd (center) brake light does work though when I press the brake, it's just the tail brake lights that dont work.
I can't find a blown fuse for the turn signals or brake lights (not really sure which fuse box it's in since the manual doesn't tell me what fuse is what)
I however did find what I'm guessing are the flashers behind the radio. What might have went wrong where before I start dumping money in to flashers and relays.
The next question is, can I jump in to the marker/turn signals and add another single LED light to them off the front? If I can which color wire does what?
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I have a 1995 Ford f250 Powerstroke and i do not have turn signals, rear running lights, brake lights or reverse lights. i checked the fuses and they seem to be good but i dont want to tear everything out to check the harness if it could be a bad ground. any insight?
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I have a f 550 that blew out starter cyl on inner fender.and starter, replaced both. Now I have no brake lights or 4 ways and no turn signals....
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I was turning left in my 01 Excursion and I think I hit the turn signal while doing so and tripped something. Now I have no turn signals and no brake lights. Headlights and tail lights work fine. I checked a couple of fuses under the hood that I believe are for turn signals, according to my manual they are fuses #20 and 22. They aren't getting any power, but the fuses themselves are fine. Is there another fuse somewhere to check? Or something else entirely?
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2005 F350 Super Duty. I have no brake lights turn signals or hazards. dealer suggested the multiswitch but changed it and still not working?
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My sons 2006 F350 brake lights and rear turn signals quit working. When the headlights are on, all the lights operate but the rear turn signals and brake lights do not nor do the emergency flashers. The front signals work but flash very rapidly. Although I'm not an auto electrician, I'm fairly mechanically inclined but the fact that the front signals work, the rear don't and all lights work as lights, just not as turn signals or brake lights.
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Every time I step on the brakes, there is a bright spark in fuse #13. My brake lights, turn signals and hazards don't work. At this point my truck isn't drivable.
According to the owner's manual in my truck, says circuit #13 is for "stop lamps, CHMSL/hazard, trailer tow stop lamp, and speed control."
I'm assuming that the hazard part covers the turn signals as well, but I know the cruise control works even when the fuse is blown. I used it last night on the way home (this was before I realized I didn't have brake lights).
So I know I have a short somewhere. The only mods I've done to the lights are aftermarket headlights, but if the fuse only gets blown when I step on the brakes, I don't see what that would have to do with it. Also, the lights have been installed and working for about a month before this started. The only thing that I did around the same time was install the gauges. I ran the power to them from #5, the customer access circuit.
Are there any other "common" areas for this to happen? I already removed the rear brake lights and it didn't work. I am quickly running out of 20A mini fuses.
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My brake lights, turn signals, and flasher are not working in my truck. Is it a fuse and what fuse? Could it be a relay?
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1999 F250 super duty. I am having a problem with the front right turn signal not working. The indicator on the dash also does not work but I can hear the relay clicking double time and the rear signal works. I have changed the bulb and fuses and went under the dash and the column to be sure a connection had not come loose. I have looked through the forums to try and find an answer with no luck. What to try next?
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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.
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only have clearance lights at plug no output for brake and turn signals
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2000 V10 F250 - daughter is using my truck and called to tell me the turn signals weren't working. She called me shortly after and said she adjusted the tilt and hazard lights came on and now she can't turn them off. I had her pull the hazard fuse to stop them. She then noticed the brake light weren't working. I don't know if the brake lights were because she pulled the fuse or she just noticed they weren't working.
A week or two ago, she said she parked the truck, turned it off and took the keys. When she came back out, the truck had rolled across the street. Periodically, over the years, I would go to start the truck and nothing happened. I would shift the gear selector in and out of drive. Then the truck started.
Finally, since I've owned the truck, the when I activated the left turn signal, the selector frequently wouldn't stay "locked" till I turned. So, are these related? Do I have multiple issues going on in the steering column. Where to start looking when she gets the truck home?
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I have a 2006 F350, it keeps blowing fuses for the brake/turn signals. The puzzling​ part is it only does this when the truck is running.
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I'm having problems with my front marker lights. The turn signals work but when I turn on the parking lights or headlights they don't work. They only work with the turn signals. And I can't get the front side marker lights to come on. I've tried everything...
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I was using a 2004 Heritage F150 and when I connected a trailer to it something got fried. I lost both my turn signals and brake lights. The trailer worked fine on my friends truck so I don't think the issue was there but with the 4-pin round connector that was on the truck.
I found two 10A fuses blown under the hood and replaced them but that didn't work. They were in slots 19 and 20 and are listed as the camper/trailer adapter fuses. The running lights still work. The interior turn signal arrows don't even light up or anything when the turn signal is activated.
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I have an 03 F250, 5.4, 4x4, with aprox. 130k miles. I recently had my exhaust manifolds replaced because 1 literally cracked in half. Ever since the replacement, I'm getting worse gas mileage! Im only getting aprox. 250 miles to a tank when before it was well over 325 (highway)...
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2013 F250 XL with factory towing package.
My camper and boat trailer do not have turning signal or brake lights when plugged into the round seven pin trailer connector. I have tried both the connector in the bed and under the bumper. I've also connected the trailers to other trucks and the lights work fine so I know the problem is in my truck.
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My neighbors 02 250 6.8l the turn signal/hazard relay is clicking with key off, sounds exactly like a turn signal when truck is off and switches are not engaged. Here's the weird thing, if you hit the brakes the relay stops clicking, if you engage the turn signal or the hazards the lights on the dash are in time with the relay as it should be, but when the turn signal switch or hazards are turned off the relay keeps clicking except when you hit the brakes. Also the turn signal will work with ignition off, if you pull the relay out the turn signals and hazards are inoperable but the brake lights still work. I swapped in a new relay and same thing...
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I have an 04 F250 with no brake lights. However the third brake light works. I've also noticed that my trailer brake lights don't work either. I do have all my turn signals and running lights. Another issue that could be connected is I have one out of four hazard lights. When I push in the hazards my front passenger blinker works but none of the others. Could this all be due to a relay switch?
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