Changing coolant

[madman]

First take off the splash guard under the drive side.

As picture, white plastic screw at the bottom of the rad. It can be unscrew by hand. Soon its unscrew the coolant should come out. Make sure you have some sort of bucket to catch the old coolants.

Now open the rad cap at the top, anti-clockwise. so the coolant should rush out like the tap.

After all drained out, i use a water hose and run it though the rad, to clean out all the dirty and rust. Then fill with water bleed the sysetm and drive it for a bit to let the road vibrations move any corrosion and blockages. After this you can reflush it with clean water till everything is clear.

Drain the overflow bottle of the old coolant

now put in the new coolant, should get the RED stuff coolant from toyota, as it is what is recommended.

Now screw back in the white plastic screw tight. than pull the coolant into the top of the rad.

Start the engine, wait about 10mins till the fan comes on, let all the air out the rad, fill it up if needed to. When all the air is out.

Than you can put the rad cap back on.

Job done

Thanks to chinaone for the information.