There is a plastic drain valve on one of the bottom corner's of the radiator (facing engine) open valve and properly catch & dispose of coolant that comes out. You may need to use pliers to loosen drain valve. Tighten by hand.
What do you wish to do, drain the coolant or remove trapped air from the system? To drain coolant, there usually is a drain valve located at the base of one of the radiator tanks, there is one tank on each side of the radiator. If it is not there or broken, just remove the lower radiator hose, ENGINE COLD ONLY.
Open the drain out valve at the bottom of the radiator to allow the coolant to run out. Replace the valve and add the fresh coolant.
To change coolant on a Toyota Corolla, place a bucket under the radiator. Open the radiator drain valve and remove the radiator cap. When all antifreeze drains out, close the drain valve. Then refill with fresh antifreeze and replace the radiator cap.
Don't know off hand but you could always pull the lower radiator hose and drain it that way.
There should be a drain valve on the radiator on the bottom passengers side If not just undo the bottom radiator hose.
Assuming you mean "coolant" not water, if there isn't a drain valve on the radiator, remove the lower radiator hose and use a large/wide drain pan to collect the coolant.
Doesnt have one, you have to remove the bottom hose to drain coolant.
It is a plastic valve on bottom of radiator, either on driver or passenger end of radiator, if you can not locate or handle breaks you may remove lower radiator hose to drain coolant.
there is a petcock on the bottom of the radiator, passenger side. it is tricky to get to, but it can be done.
Remove the lower radiator hose.
If it's a 5.4 you have to loosen the petcock on the radiator. There is also a drain valve on each side of the engine that you have to loosen to drain the system. Without this, you'll only get about half of the coolant out with the radiator only.