Since it's new and still under warranty I'd take it to the dealer to have them take a look. Hopefully it's just something in the gauge panel, perhaps a loose wire.
If my case the connection for the whole panel was erratic, sometimes working sometimes not, so I removed the cover and checked the connections.
Hopefully your problem isn't with the sensors on the tank.
2007 Shamrock F19 hybrid - 2010 (22 nights), 2011 (24 nights), 2012 (11 nights)
2013 Surveyor Select 235RKS - 2012 (6 nights), 2013 (32 nights), 2014 (26 nights), 2015 (37 nights), 2016 (14 nights)