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Check the TV input settings. If you have RCA plugs then make sure they are plugged into the right inputs. Some TV's have both A/V ( yellow,red, white) and progressive scan. Yours need to be in the A/V and the input on the TV has to be the same.
Outside display may be a warranty item for the dealer.
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.