I know the stock tongue jack on the new trailers is junk, but I can't justify replacing something "just because," especially when it still works fine. Except for the LED light on the front.
I noticed on our last trip that the light wasn't working, so I finally got around to looking at it. The cover on the top of the jack is only held on by four screws, so taking that off allows access to the innards of the jack. I checked out the connections for the light, and there was power up to the switch, but nothing past that. That tells me that the problem is with the switch. No power to the light itself, even with the switch on.
The switch is held in place by two clips molded into the cover itself, so opening those exposes the inside of the switch -- just a simple rocker-type switch with a metal piece inside that is either open or closed. I looked at the metal piece and where it makes contact to close the circuit had corroded preventing the metal piece from making contact. I cleaned the corrosion off, put some dielectric grease on it, and put it back together. I turned the light on and it was nice and bright.
Sorry, no photos, and I'm not going to take it apart again just to get some.
But I do find it disturbing that we've only had our trailer since early May and this has happened. I guess I should start looking for some way to cover the jack. On a happier note, I don't have to get the dealer involved for a warranty repair.