The OP's 2014 unit is probably not under warranty anymore. Cedar Creek is more than likely going to send the whole light. I had a light issue and they wanted me to send them pictures of the whole unit.....it took a few tries on their part before they finally sent me the correct unit. There are several different puck style light fixtures.
2019 Cedar Creek 34RL2 w/disc brakes
2017 GMC 3500 D/A, DRW, 40Gal Aux Tank
Retired Dept of Navy: Navy/USMC Flt Test Engineer