2005 Toyota Land Cruiser - Fuel when empty

How much petrol is left in my Land cruiser vx limited when gauge lights Empty

Fill the tank. Not e the gallons (or liters) required. Subtract this number from the tank capacity, this will give you the number you are looking for.
However, this can be risky since the fuel in the tank cools the fuel pump. Why risk it? Fill at a 1/4 tank.