Hi guys, I’m new to this forum but I’ve found some good info while lurking in the past haha. I’ve got an 03 Navigator with the 5.4 and I’ve had the battery light and check charging system warning for the past 4 years I’ve owned the car. I replaced the battery today for an unrelated reason, but I’ve had the alternator tested in the past and they said it’s fine. I have no issues with battery drain or anything, just that the light turns on a few seconds after start and never turns off. It’s like it doesn’t mean anything.
A while back I took her in to a shop for a different issue and I asked them to check out the light. I faintly recall them mentioning a technical service bulletin about a wiring harness, but that’s all I remember. I’ve also read some things about the system being controlled by the PCM and that the light won’t go away unless it’s a motorcraft alternator. I’m not sure if mine is, but is it really that simple? I’ve been ignoring the light this long and I guess I could live with it, but it would be nice to have it gone. Any info would be greatly appreciated.
A while back I took her in to a shop for a different issue and I asked them to check out the light. I faintly recall them mentioning a technical service bulletin about a wiring harness, but that’s all I remember. I’ve also read some things about the system being controlled by the PCM and that the light won’t go away unless it’s a motorcraft alternator. I’m not sure if mine is, but is it really that simple? I’ve been ignoring the light this long and I guess I could live with it, but it would be nice to have it gone. Any info would be greatly appreciated.
