M8 has your RKE got a red button on it? If it does, you need to go to the deler and ask them to fit the New Zeland RKE unti to the left frount door. As for the right frount controll pannle not working, get them to check the right frount door lock mechanism, and replace if worne. Be warned that the above repair will cost you well over $1000. Another fix is to pull the biggest amperage fuse, of the fuse box under the bonnit, out for about ten second's. this get's you the same result as disconecting the battery.
Hope that this helped you