Ford Super Duty (1999-2016) :: 2001 F250 - Interior Lights Not Working
May 14, 2016
Just got a 2001 F-250 Super Duty (crew cab, long bed, 4x4, 7.3L turbo diesel) and have been going through and fixing a lot of little issues. The one that now has me stumped is the interior lighting circuit (which is also the bed light). Here's what I've got so far:
Map/reading lights work, but dome lights do not (neither automatically nor when turning them on via the dimmer switch). Verified all fuses in the PDC as well as the interior fuse panel (behind the driver side knee panel). The interior lighting relay was missing, so I purchased and installed it.
Relay #1 (interior lighting), fuse #4, and fuse #14 are all good - when I pull the fuse with the door open, the relay clicks (and clicks again upon reinstalling the fuse). With the doors closed, the relay clicks when activating the interior lights via the dimmer switch.
The LT GRN/YEL wire is hot, and all related accessories work (map lights, engine bay light, etc).
The BLK/LT BLU wire is not receiving power from the relay from what I can tell.
Before I start trying to pull out the fuse panel to start checking connectivity, anything else to check? The ground at the rear driver corner of the cab is good, and a visual check of the harness running down the driver side of the cab has no visible signs of damage.
Also, given that the relay is audibly actuating the way it should, I'm guessing that the GEM can be ruled out as a possible cause? My next step will be to get a pinout diagram for the relay and crimp a quick jumper to see whether or not it's simply a defective relay... But I doubt it's the case.
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I have a 2012 F250 and am having a problem where the interior lights wont come on with the dash switch or when the doors are opened. I have confirmed that it is not a bad fuse, also the lights will come on when the switch on the individual lights is manually pushed, but not automatically like they are supposed to. I dont see it being a door switch issue because the door chime comes on and the stereo goes off when the doors are opened after turning the ignition switch off. I've read that the dealerships will switch out the BCM. I thought maybe the dimmer switch next to the headlight switch but there is no power to it whatsoever, which also I can't dim the instrument panel lights. What did you do to resolve?
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I have an 2001 F250 SD with 7.3 Diesel. Headlight switch failed and I replaced it. But now I have no high beams and my dash lights that light the dash up don't work. Gauges, fog light, low beams all work fine. Fuses checked. Multi function switch checked. What to do next?
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I have a 2006 F250 6.0L Crew Cab 4x4 that started acting up. It started two days ago when I noticed my windshield wipers were only working at one speed. Then today my wife took the truck to work and she said the radio stopped working on her way to work. Then she gets in this afternoon and the ABS light is on, the A/C isn't working, the windows are super slow and the interior lights are flickering. She isn't home yet so I haven't checked the fuse block. Where would you start looking?
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Two nights ago I got into the truck at night and realized the interior lights don't come on. I tried the rocker switch it will only dim the dash gauges now. It did work before guessing its a bad rocker switch. I can turn them on manually front and back....
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The rear tail lights on my truck have been out for a while now. I wasn't doing much driving at night so it wasn't much of a bother but the new job is getting me home a little later and having to drive with my hazards on is getting old fast.
My radio wasn't working either and I disconnected it a while back hoping maybe it had something to do with my lights shorting out but no luck. It remains disconnected. Just in the past few days my front running lights have went out as well.
I've tested all fuses multiple times (and replaced a couple of them) and checked and replaced bulbs. My brake lights, headlights, dash lights and hazards all work fine. I have the trailer light hook up on the rear bumper and disconnected it at the wiring harness as well hoping it was the problem but it wasn't.
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2012 f250, fog lights stopped working and tried fixing yesterday. I'm getting 12.8v at the plug but as soon as you plug the light in it goes to 0. Ran a new ground from frame and the hot from plug and still nothing. High beams off, truck running and switch pulled out. Bulb is fine, hooked it straight to battery and it comes on. I though it was a faulty ground but by running a separate ground and still nothing. I'm at a lose.
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I have a 2005 F250 that the brake lights are not working when brakes are applied. The rear blinkers and flashers are working. what could be my problem.
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I have a 2001 F250 with 7.3.... We swapped the auto for a zf6 manual.... We left the auto's shift position sensor tied to the frame and left in neutral. I did install a pcm from a manual transmission pickup. Also have the clutch position switch hooked up. I have an Edge Evolution CTS2 reprogrammer, and on the display the gear indication always shows P. I suspect that is why my cruise doesn't work. For interests sake, I tried manually adjusting the shift position sensor through all gears, and the reverse lights come on when in reverse but the Edge's display always shows P. My question is with a manual transmission, how does the pcm know that it is in gear? The only sensor that I am aware of is the reverse sensor on the zf6.
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2004 f250, brake lights except 3rd brake light do not work. flashers also do not work. turn signals work on both sides. when you turn on the flashers only the right indicator on the dash lights. checked all fuses for brake lights and am at a loss. On a float trip this weekend with my toy hauler and need brake lights to get home.
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I've just bought 2001 f-250 crew cab and when I push the cruise control on the steering wheel it does nothing. Maybe a fuse or does my year have one of those master cylinder switches?
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2000 F-250 Super Duty
I was replacing my headlights, which required me to splice in their lights to my parking lights, and I seem to have shutdown ALL my parking lights. I did a test after twisting my wires together and everything worked fine. Then I soldered and heat shrunk them and somewhere during that process I lost all the parking lights.
I checked the 8th fuse as per the manual (for Parking Lamps) with a multimeter and it checked out just fine.
Figured it was the time to ask the experts on here where I should go from here. Are there some other fuses I could be missing, or maybe some else I could do?
Solved: Bad fuse in the #8 slot in the Power Distribution Box (under the hood, near Cab, driver's side)...
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Iv been chasing an electrical issue with my park lights staying on. Even with the #8 fuse out and the GEM unplugged the lights stay on.
They are being powered by the #4 fuse circuit that power mirrors, glove box light and under hood light are on. With that fuse pulled the park lights go off.
Now I have to figure out how the 2 circuits are connected.
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Thought I'd ask a quick question here...
Is the lens on OEM fog lights removeable? Mine is fogged up and discolored, so was wondering if the unit comes apart where I can clean & reseal ?
Or just buy a new set ?
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I have a 2001 f250 v10 lariat ext cab. i was going to get wood the other day down a muddy road. My radio went out and all my running lights. i replaced the fuse radio and now the switch. Still nothing. Could it be a bad ground? i ran a jumper wire on my old switch and they worked then just stopped again. if it is a bad ground where would it be located.
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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.
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2001 F-250 7.3. The auto lock hubs are not working on the truck lock hubs in and all works fine. First thought is the vacuum system has a leak or something of the sort. Had truck at the shop they are telling me the GEM module controls the vacuum to engage the auto hubs and the signal is not coming from the GEM and it need to be replaced. It was the GEM causing the problem.
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I have a 2001 f-250 that has dome lights that work on occasion. Mostly don't work. The inside dash dimmer won't turn them on. And they will sometimes work with the rear doors opening. Not the front(4 doors). The cargo light comes on all the time. So I don't know where to start chasing.
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My drivers window will not work at all but when I push the button I get a clicking in the fuse box. The other 3 windows partially work but will only go up or down in small increments. I have tried holding the button and slamming the door and this allows the other 3 windows to work. I thought it was the switch so I replaced it and that was not the problem. Fuse and relay seem to be fine. If it was just the driver window I would think it was the lift motor but with the other 3 windows on the fritz I have no clue.
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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?
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I have a 2001 F250, 5.4, 4X4. My ignition key stuck in the start position and when I pulled it back to the run position, everything seemed ok. As I started down the road, my speedometer stopped working and my overdrive light was flashing. Also my turn signals had stopped working and my A/C clutch didn't engage. Figured I burnt a fuse. I looked in both the under dash and power distribution box and all seemed well. I checked the fuse for the turn signals/flasher and it was fine. The flashers worked. Thought I might have fried something so I replaced the ignition lock and switch. Also my service engine light came on throwing a code for the vehicle speed sensor.
Looking for solutions on this forum and the internet, I learned that the turn signal switch could have gone bad and the VSS sensor is on the top of the rear dif and an easy fix. Well replaced the sensor but nothing changed. So I went back to the fuse box. Examined every fuse, big and small and I found a 10a with a small space. This was #24 under the dash. From the manual, "#24, 10A, A/C clutch, Blend Door Actuator, Trailer Tow Battery Charge Relay Coil, Four Wheel Anti-Lock Brake System (4WABS), Turn Signal." Replaced it and everything went back to normal. Turn signals work, A/C clutch works, no flashing overdrive light and speedometer works. All from a 10A fuse. If you have any of these symptoms examine all the fuses carefully. There's a 20A fuse for turn/hazard lamps and this other one buried that's only 10A.
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