The CANBUS system has to have the option turned on via a starscan/starmobile type device from the factory, maybe they just overlooked yours during the build. Can you turn your front foglights on with your high beams on ? UK builds are supposed to be able to do that as well and it's disabled in North America so the fogs are only on with the low beams.
2013 JKU Rubicon - Commando and 71 Jeep CJ5 (pretty much stock)
Teraflex 2.5" spring lift, Teraflex monster front and rear trackbars, G2 wheel adapters, Goodyear Wrangler MTR Kevlar 35 x 12.5 x 17, Superchips Flashcal, Warn Zeon 10, Smittybilt XRC bumpers front and rear with tire carrier, Metal Cloak Overland Fenders, Uniden Bearcat 980, Homemade side rails. 50" and 20" light bars and brackets.