The RCTIP (Recommended Cold* Tire Inflation Pressure) for those LT285/65R18 Load Range D KO3 tires on your 2019 LC200 is 42psi F/R.
Don't forget to re-initialize your Tire Pressure Warning System.
*FYI, according to Toyota:
Tire Pressure vs. Tire Temperature
Tire temperature is dependent on “cold” tire pressure, driving distance and speed, ambient temperature and road surface temperature. As the temperature of the tire changes, air in the tire expands and contracts, changing the tire’s air pressure. The cold tire pressure for all Toyota models will vary and will need to be adjusted accordingly.
“Cold” tire pressure, as shown on the tire pressure label on our vehicles, is generally considered to be the pressure in a tire that has not been driven in the past 4 hours and has been parked outdoors.
HTH