Steering rack replaced and drivers airbag light flashes. Why is this? Mechanic spent hours trying to fix it!

I have just bought a Japanese import in Auckland, NZ and Having trouble trying to find out how to change the language from Japanese to English and also adjust the time stated on the touch screen. Is t… 

The car started cutting while still driving n switched off and I changed plug snow it's refuse to start it just be on. Fan don't run too n temperature gauge light blue

Green and red temperature gauge coming on

Every time the windshield fogs, some horizontal lines can be seen, as if the glass had some tape marks or something like that. I've cleaned it many times, even with Windex, but the lines keep appearin…