have a look at the original mirror. last one I had in front of me had the key pickup inside it. removng the OEM mirror removed that and the car doesn't start. happy to be proven wrong.
for those that still have the shits over this. I am working on utilising the touchscreen setup in this car to control a nav system. stay tuned.
(thanks to a certain person in sydney for the pieces as well!!!)
motor is roughly $500 a corner. make sure you get the right PN. there are 3 differnet ones. chassis number will help and nissan can look it up for you.