Danny, BUMMER!!! I feel your pain! Lionel cab forward 6-11463 is out of the 2014 Signature catalog 7 years old. You didn't mention if it was NIB or used when you purchased it. Not that it matters all that much when it comes to Lionel warranty. Even if it's NIB it's probably out of warranty, unfortunately, unless you can convince Lionel support otherwise. If it's NIB, DO try Lionel first and see if you can convince them to take it in as warranty.
A note: Xmas is closing in and it's a very busy time of year for Lionel support. People are getting their Xmas train sets out and the model railroad gremlins have been busy the past year messing with model locomotives in their boxes. It's the only explanation for putting away a perfectly working train set and it not working a year later. ;-)
