Thanks for the reply's.
Looking at what is listed on ebay, the replacement "nissan 28596 9f97 cont unit-keyless box" differs from what's in the car.
If they looked the same I might of given it a go.
What's the location of the NATS unit, on a 1999 Micra K11.
I stripped out the glove box and the heater assembly but I only found the nissan 28596 9f97 cont unit-keyless box.
I have got the flashing EML light.