Three problems related to brake light have been reported for the 2004 Ford F-150. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Ford F-150 based on all problems reported for the 2004 F-150.
I own a 2004 Ford F-150. In 2012 I had my e-brake light start flashing at me. I brought it into the mechanic and had them look it over, they said they couldn't find anything wrong other then the wiring under the dash was probably bad, so I brought it to a brake specialist and they said the same thing, nothing wrong with cylinder or brakes, that it was the wiring under the dash. I'm truely not safe using my e-brake as I'm not sure if it is working or not. My interior lights started coming on also when I would turn on my headlights, everyone knows you shouldn't have the interior lights on while driving at night anyway. I have read several articles where other Ford F-150 owners are having the same problems. I think this needs to be looked into and a recall should go out.
The 2004 f150 SC has a few problems: first was the water leaking from the third brake light in which I had to apply silicone around the rubber seal of the light. . . Never leaked again. Second issue was far more frustrating, when traveling around 40 to 50 mph when deciding to accelerate quickly the truck would act as if it was being starved of fuel. The best way to describe it was by depressing the accelerator and releasing it very quickly. I took it to the wonderful Ford dealership, sarcastic, and they told me nothing was wrong, and shop manager told me it was because of cold air intake. . . Finally ,after calling Ford customer service and complaining the dealership decided it was my throttle body. . . Naturally all my problems were gone. Now, less than a year later the problem arose again and I will post the outcome once known. The third incidence was the front bucket seats, started noticing shredded foam under the front part of the seats, not knowing what it could be I assumed it was excess foam around the seat straps located under each seat, to my surprise a hole appeared on the driver's seat on the front left corner facing the door and again I went to the wonderful dealership and I showed them there was a piece of metal with a sharp barb that was slowly shredding the foam and was the culprit in creating the hole and the shredded foam. Caution!!!!!! if your truck has this problem be careful!!! I was getting out of the truck and the metal barb caught my pants and tore a huge hole and gave me a pretty deep cut on the inner thigh. None the less the dealership didn't do anything about it. I finally convinced them to replace the seat with me paying for the replacement cost. . . But, before I could get the work done the wonderful dealership went out of business and I haven't hit-up the new owners.
A chatter/ vibration in the rear- clutches in the rear were replaced. Check engine light came on- replaced the fuel vapor management system. Brake light on roof leaking- light was replaced. Roof of truck rusting- nothing done.