My 02 3.9L LS just started having lighting issues. The left rear turn signal isn't working and the right rear tail lights are not working. Bulbs seem ok. Also, the interior light wouldn't come on. Some preliminary reading had me thinking the rear electronic module is the culprit, so I took it out and inspected for obvious issues, but nothing was apparent. I disconnected the battery and let it sit for 30 minutes or so. When I put it back together, everything was working. Got up this morning and again the left rear turn signal is not working and right rear tail lights are not working. Is this most likely the rear electronic module? Or could the FEM be the issue? I wonder about the FEM because of the interior lights, or are they controlled by the REM? I have been looking online at REMs and have found a few that are the same part number as mine. YW4T-13B520-AB. If the REM is the issue, will a used module with the same part number have to be programmed? Is the dealer the only one that has the ability to program it, or are there local repair shops that can do it? Will dealers still work on an 02 model? Years ago (maybe 04 or so), I had the local dealer tell me they wouldn't work on anything older than 10 years old, not sure if that applies, or if it was because it was 90 model F150 I wanted them to look at.
Thanks,
Rosewood
Thanks,
Rosewood