I have a 2011 kizashi and in the past week my key fob hasn't been consistently working. I haven't been able to use the lock/unlock buttons for a while but have been able to keep the fob in my pocket and unlock the door from pressing the button on the handle. However, now that will not work at all so I figured the battery must be dead.
So, I got my spare key fob and that ALSO doesn't work. I find it hard to believe that the battery on the second one is also dead, especially since I have hardly used it.
If so, see page 2-13 of the link above which has a diagram of the remote for visual / battery access reference.
In part it states:
1) Insert a flat blade screwdriver covered
with a soft cloth in the slot of the remote
controller and pry it open.
(1) Lithium disc type battery:
CR2032 or equivalent
2) Replace the battery (1) so its + terminal
faces the bottom of the case as shown
in the illustration.
3) Close the remote controller firmly.
4) Make sure the door locks can be operated
with the remote controller.
5) Dispose of the used battery properly
according to applicable rules or regulations.
Do not dispose of lithium batteries
with ordinary household trash.
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