The following is for a k10/k11 micra NOT the current model. I will state what you do different for the current model later.
Get hold of 2/3 litres of Nissan approved coolant, its not too expensive...
the easiest way is to take out the engine, but that would be to easy so firstly you have to take off the left hand side tyre(passenger side).disconnect the tracking "leg", dat bits da easy part....
You can pull the airbag fuse, disconnect sir yellow wire at steering column that goes to the clockspring, or disconnect the battery neg cable. The last is foolproof but will clear out anything with a...